Jeddah KAIA Airport Atkins Report.pdf

Saudi Binladin Group King Abdulaziz International Airport Development Packages 421 and 422 Mechanical, Electrical, Plumbing and Fire Protection for Facilities. Model Basis of Design Report 421-422 -A000-DF-G-RPT-00020-D

March 2012

KAIA Package 421 and 422 – MEP Basis of MEP Basis of Design Report

2

Notice This document and its contents have been prepared and are intended solely for Saudi Binladin Group’s information and use in relation to the MEP design of Packages 421 and 422 of the new King Abdulaziz International Airport Development. Atkins assumes no responsibility to any other party in respect of or arising out of or in connection with this document and/or its contents.

Document History

JOB NUMBER: Purpose Revision Description

DOCUMENT REF: 421-422-A000-DF-G-RPT-00020 421-422-A000-DF-G-RPT-00020-D -D Originated

D

Fourth Richard Smith/ Submission Paul Martin

C

Third Richard Smith/ Submission Paul Martin

B

Second Richard Smith/ Submission Paul Martin

A

First Submission

Paul Martin

421-422-A000-DF-G-RPT-00020-D

Checked

Mike Pyle Mike Pyle Mike Pyle Mike Pyle

Reviewed

Authorised

Date

Lee Hall

Stuart Downey

06 Mar 12

David Crowder

Richard Schunter

21 Jan 12

David Crowder

Richard Schunter

20 Nov 2011

Richard Smith

Richard Schunter

19 Sept 2011


Overview This report has the following objectives: •

To communicate and amplify the basis of the MEP contract requirements and design criteria for the building facilities defined under packages 421 and 422 of the project;

•

To summarize the scope of works, define defi ne the relevant design standards and codes of practice to be followed and confirm the design criteria;

•

To be the template for all facility Design Criteria 70% submissions

421-422-A000-DF-G-RPT-00020-D

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4

Table of contents Chapter

Page

1. 1.1.

Introduction Scope

2. 2.1. 2.2. 2.3. 2.4.

Codes and Standards Codes and Standards Units Specified Standards Adopted Standards

13 15 15 15 16

3. 3.1. 3.2. 3.3. 3.4.

Design Software Mechanical Design Plumbing Systems Design Fire Protection Systems Design Electrical Systems Design

19 21 21 21 22

4. 4.1.

General Design Parameters General Design Parameters

23 25

5. 5.1. 5.2. 5.3. 5.4. 5.5.

Mechanical Systems General Basis of Design – External Design Temperatures Basis of Design – Heat Rejection Basis of Design – Internal Conditions General Areas Basis of Design – Internal Conditions Laboratories/ Special Equipment Rooms Basis of Design – Internal Conditions Computer and Communication Rooms Basis of Design – All Rooms Not Covered by MEP Basis of Design 6.4 to 6.6 inclusive Basis of Design – Emergency Chilled Water, Room Temperature Cooling Load Computation Chilled Water Basis of Design – Chilled Water Networks In Facilities (1) Fresh Air Ventilation Dedicated Exhaust Air Systems Dedicated Supply and Exhaust Air Systems Refrigerant Ventilation Management Kitchen Ventilation Car-park Ventilation Cold Smoke/Gas Removal Battery Room Ventilation Road Tunnels and Underpasses Ventilation Air Conditioning / Comfort Cooling Basis of Design – Cooling and Ventilation Fire and Motorised Fire & Smoke Dampers Special Systems – Central Vacuum Cleaning Systems - PTB Stairwell Pressurisation Systems Aircraft Systems - Pre-Conditioned Air

27 29 29 29 29

5.6. 5.6.1. 5.7. 5.8. 5.9. 5.10. 5.11. 5.12. 5.13. 5.14. 5.15. 5.16. 5.17. 5.18. 5.19. 5.20. 5.21. 5.22. 5.23. 5.24. 5.25.

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30 30 30 31 31 33 34 35 35 35 35 36 36 37 37 37 38 39 41 41 41 42


5.26. 5.27. 5.28. 5.29. 5.30. 6. 6.1. 6.2. 6.3. 6.4. 6.5. 6.6. 6.7. 6.8. 6.9. 6.10. 6.11. 6.12. 6.13. 6.14. 6.15. 6.16. 6.17. 6.18. 6.19. 6.20. 7. 7.1. 7.2. 7.3. 7.4. 7.5. 7.6. 7.7. 7.8. 7.9. 7.10. 7.11. 7.12.

8. 8.1. 8.2. 8.3. 8.4. 8.5. 8.6. 8.7. 8.8.

Seismic Restraint of Mechanical, Plant, Equipment and Systems Acoustic and Vibration – Mechanical Systems Diesel Oil Systems Air-Conditioning Condensate Ventilation of Hazardous Areas

5

43 45 46 47 48

Plumbing and Drainage Systems General Potable Water Supply Grey Water Hot Water Supply Legionnaire’s Disease Prevention Sanitary and Waste Drainage Vacuum Plumbing Systems Rain/Storm Water Drainage Decorative Pools and Fountains Compressed Air System Basis of Design – Sanitaryware and Fitting Load Values Assigned to Fixtures Basis of Design – Water Distribution System Design Criteria Required Capacity at Fixture Supply Pipe Outlets Basis of Design – Gravity Drainage Fixture Units Basis of Design – Sump Pumps Aircraft Systems - Potable and Blue Water Aircraft Systems – Vacuum Waste Seismic Support of Plumbing, Plant, Equipment and Systems Irrigation Liquefied Petroleum Gas Acoustic and Vibration – Plumbing Systems

50 52 52 53 55 56 57 57 58 58 59

Fire Protection General Code and Standards Water Supply Sprinkler Systems Standpipe and Hose Systems Portable Fire Extinguishers Foam Systems. Wet Fire Suppression System Control and Instrumentation Wet Fire Suppression System Pressure Regimes Dry Chemical System. Clean Agent System. Seismic Support of Fire Suppression, Plant, Equipment and Systems

64 66 66 67 67 67 68 68 69 69 70 70

Electrical Systems General Definitions, Abbreviations and Acronyms Codes and Standards - MV Supply Basis of Design – Standards Basis of Design – Substations Basis of Design – Local LV Generators Basis of Design – LV Distribution. Basis of Design – UPS

72 74 74 74 75 75 79 80 81

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59 59 60 60 61 61 62 62 62 63

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8.9. 8.10. 8.11. 8.12. 8.13. 8.14. 8.15. 8.16. 8.17. 8.18. 8.19. 8.20. 8.21. 8.22. 8.23. 8.24. 8.25.

Basis of Design – Lighting Installation Basis of Design – Lighting Levels Emergency Lighting Systems Road Tunnel Lighting Control Voltages Control System Power Supply (125 V DC POWER SUPPLY) Lighting Management System (LMS) Raceways and Conduits Disturbance and Interference Protection Ratings Basis of Design – Seismic Restraints Identification and Labelling Mounting Heights Tenanted Areas – Electrical Systems Basis of Design – Aircraft Services Audio Frequency Induction loop System (AFILS) Grounding and Lightning Protection

6

84 85 87 88 89 89 89 91 92 93 94 95 96 97 97 100 100

9. 9.1. 9.2. 9.3.

LEED Compliance General Electrical Mechanical

102 104 104 104

10.

Structural, Electrical, Mechanical (SEM) Opening Requirements Ventilation Ductwork Chilled Water Condensate Refrigerant Floor Drains Drainage and Fire Service Drainage and Fire Service Electrical

105 107 107 108 108 108 109 109 110

10.1. 10.2. 10.3. 10.4. 10.5. 10.6. 10.7. 10.8.

421-422-A000-DF-G-RPT-00020-D


Appendices Note:- The original design criteria appendices have been transferred to f acility design reports

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1.

Introduction

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9

Introduction 1.1.

Scope

Atkins have been appointed by Saudi Bin Laden Group (SBG) to carry out the detailed design of the MEP services for Packages 421 and 422 of the King Abdulaziz International Airport (KAIA) project. The facilities covered are identified in the table below in terms of their respective Facility Code references under the contract and the Atkins design delivery centre by geographic location. The purpose of this document is to establish general project wide criteria and basis of design for the facilities Mechanical, Electrical, Plumbing and Fire Systems. The systems covered in this report include; • • • • • • • • • • • • • • • • •

Air conditioning & ventilation systems BMS control, monitoring and automation system Chilled water systems Smoke extract systems Electrical power supply Normal & emergency lighting (internal) Normal & emergency lighting (external) Earthing and lightning protection Hot & cold water supply systems Rain ,surface and foul drainage systems Fire suppression systems Special aircraft systems Central vacuum cleaning system Water Feature hydraulics and water treatment systems Seismically qualified supports and restraints for MEP equipment Support structures for hydronic piping and ductwork Diesel oil systems

Fire alarm system design is within the scope of Special Airport S ystems (SAS) and is described in a separate document. This report is based on the requirements stipulated in the contract documentation and in particular Special Specification (Part-D1), tender (Part-D1), tender addendum and tender questions and answers, all relevant design reports included in the 421 and 422 Exhibit H1 - Technical. This document covers common MEP basis of design criteria for building facilities and in Appendix 1, facility specific design criteria is provided. This Basis of Design (BoD) document forms part of a family of BoD’s covering the design of the MEP systems. Other MEP related BoD’s are listed in the table below.

BoD Title

Document Number

Design Delivery Centre

MEP Systems in Facilities

421-422-A000-DF-G-RPT-00020

Dubai UAE

Kitchens and Laundries

421/422-A000-DF-X-DSG-0003-A 421/422-A000-DF-X-DSG-0003 -A

Humble Arnold

Front of house lighting


MBLD & LAPD

Vertical & horizontal conveying

421-422-A000-DF-M-RPT00024-A

Barker Mohandas

Building cleaning systems


Lerch Bates

Baggage handling systems


BNP

421-422-A000-DF-G-RPT-00020-D


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BoD Title

Document Number

Design Delivery Centre

Façade Lighting


Light Cibles

Landside Utilities

422-C200-DF-G-RPT-0001-A

Atkins UK

Fuel farm process

422-A000-DF-X-DSG-0002-A

Atkins Sharjah UAE

I2BS

421-DCS-M-GRP-0003

Atkins-Comms, UK

422-A000-DF-X-DSG-0003-A

Atkins Bahrain

Special Airport Systems

421-A000-00-Y-RPT-0001 to 0057 inclusive and 422-A000-00-Y-RPT0001 to 0006 inclusive

Atkins – SAS Team, UK

Fire Alarm and Detection Systems

421-A000-00-Y-RPT-0031

Atkins – UK and Dubai

SCADA

To be issued

Atkins Bahrain and UK

BMS*

421/422-DCS-GRP-G-0001-00

Atkins UAE

APM Tunnel Ventilation

421/422-DCS-GRP-G-0001-00 421/422-DCS-GRP-G-0001-00

Atkins

Site Wide Seismic Restraints Design Report

421-422-000-002-A000-DF-M-RPT0001

Atkins UK

422-C220-DF-C-RPT-001.

Atkins UK

Load centre power and process

2)

1)

Utilities, Grey Water Network Landscape Irrigation

1)

1)

422-C220-DF-L-RPT-001.

Atkins UK

1) Design report that includes includes the basis basis of design. 2) Water treatment, water quality, make up water and blow down disposal are addressed in this document Each of the above systems has a particular BoD detailing their specific requirements. The facilities covered are identified in the table below in terms of their respective Facility Code references under the contract and the Atkins Atk ins design delivery centre by geographic location.

Facility Code Reference

Facility Description

Atkins Design Delivery Centre

C110

Load Centre A

Bahrain

C120

Load Centre B

Bahrain

C130

Load Centre C

Bahrain

C140

Load Centre CN (Airport City)

Bahrain

J100

Mosque

UAE

J150

Fire and Rescue Center

UAE

J250

Tree Nursery

Bahrain

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Facility Code Reference

11

Atkins Design Delivery Centre

Facility Description

Sharjah, UAE

J400

Fuel Farm

B100

Radio Sites Relocation + Dismantling

UAE

B360

Saudi Airlines MCC (interim)

UAE

B160

Temporary GSE Facility (interim)

UAE

H110 and H120

Data Centres

Bahrain

F100

Passenger Terminal Building

UK

F102

Pedestrian Bridges from Viaduct

UAE

F160

First and Business Class Parking

UAE

F200

Curbside Viaduct

UAE

F170

VIP and CIP Parking

UAE

F300

Transportation Centre

UAE

F400

Multi-Storey Car Park

UAE

F500

Railway Station

UAE

F155

APM Maintenance Depot

UAE

G100

Air Traffic Control Complex

USA

J600

Crisis Management Center

USA

G300

Meteorological Observation Building

USA

G200

West Support Tower

USA

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2.

Codes and Standards

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15

Codes and Standards 2.1.

Codes and Standards

As detailed in contract documents documents J-10-421-PF-0 and J-10-422-PF-0 Exhibit D-Special specifications, specifications, PartD1 , clause 2.5.2 Codes and Standards, the following codes, specifications, regulations, and industry standards, where applicable, shall cover design, material, and construction of the MEP systems.

2.2.

Units

The Metric SI system will be used throughout the project unless otherwise stated.

2.3.

Specified Standards

The following codes and standards are as specified in contract document No. J-10-421-PF-0 Exhibit DSpecial specifications, Part-D1 , clause 2.5.2.+ 2.6.2. The same standards are referenced in contract document No J-10-422-PF-0 Exhibit D-Special specifications, Part-D1 , clause 2.5.2.+ 2.6.2.

Reference General Civil Defence Administration Kingdom of Saudi Arabia Kingdom of Saudi Arabia Saudi Arabian Standards Organization (SASO) Kingdom of Saudi Arabia

Publication Title

Safety Guidelines

The Saudi Building Code Relevant Standards Airport “Basis of Design” and “Standard Specifications”

ASPE

American Society Society of Plumbing Plumbing Engineers

IPC

International Plumbing Code

IMC

International Mechanical Code

NFPA

National Fire Protection Association

NPC

National Plumbing Code Handbook

ASHRAE

American Society of Heating, Refrigeration and Air conditioning Engineers

ANSI

ANSI American National Standard Institute

ASTM

American Society for Testing and Materials

ASME

American Society of Mechanical Engineers

AMCA

Air Movement and Control Association

ARI

Air-conditioning and Refrigeration Institute

AWS

American Welding Society

421-422-A000-DF-G-RPT-00020-D


Reference

Publication Title

UL

Underwriters Laboratories

SMACNA

Sheet Metal and Air Conditioning Contractors National Association

FM

Factory Mutual

HI

Hydraulic Institute

AWWA

American Water Works Association

ICAO

International Civil Aviation Organization

ISA

International Society of Automation

EN

European Norm

IEE

Institute of Electrical Engineers

CIE

International Commission on Illumination

CIBSE

Chartered Institute of Building Services Engineers

ASME

The American Society of Mechanical Engineers

IEC

International Electrotechnical Commission

BSI

IEE Requirement for Electrical Installations British Standard institution

TIA 942

Telecommunications Infrastructure Standard for Data Centres

2.4.

16

Adopted Standards

The following codes and standards are an amplified list of the standards defined in 2.3, above and have been adopted by Atkins and are listed below. These codes and standards amplify and support those mentioned in the contract documents. In the event of a contradiction between the standards listed below and those given in the contract the t he contract documents shall take precedence.

Publication Reference

Publication Title

SBC

Saudi Building Code, Section 401, Electrical

SBC

Saudi Building Code, Section 501, Mechanical

SBC

Saudi Building Code, Section 601, Energy Conservation

SBC

Saudi Building Code, Section 701, Sanitary

SBC

Saudi Building Code, Section 801, Fire Protection

421-422-A000-DF-G-RPT-00020-D



Publication Title

ASHRAE

Handbook H - 2008 - HVAC Systems and Equipment

ASHRAE

Handbook F - 2009 - Fundamentals

ASHRAE

Handbook R - 2010 - Refrigeration

ASHRAE

Handbook A - 2011 - Applications

ASHRAE

SF-98-14-3 -- Seismic Codes, HVAC Pipe Systems, and Practical Solutions

LEED-NC v 2.2 with errata 1, 2 & 3

Leadership in Energy and Environmental Design

IFC

International Fire Code

IBC

International Building Code

IFGC

International Fuel Gas Code Code

IPC

International Plumbing Code

NEMA

National Electrical Manufacturer’s Association

IEEE

Institute of Electrical and Electronics Engineers

IESNA

Illuminating Engineering Society of North America

TIA/EIA

Telecommunication Industry Association / Electronic Industries Alliance

ICAA

International Civil Airports Association,

NFPA 10

Standard for Portable Fire Extinguishers

NFPA 11

Standard for Low, Medium and high-expansion foam

NFPA 13

Standard for the Installation of Sprinkler Systems

NFPA 14

Standard for the installation of Standpipe, Private Hydrant and Hose Systems

NFPA 15

Standard for Water Spray Fixed Systems for Fire Protection

NFPA 16

Standard for the Installation of Foam-Water Sprinkler and Foam –Water Spray Systems

NFPA 20

Standard for the Installation of Stationary Pumps for Fire Protection

NFPA 24

Standard for the Installation of Private Fire Service Mains and Their Appurtenances

NFPA 30

Flammable and Combustible Liquids Code

NFPA 54

Storage and Handling of Liquefied Petroleum Gas

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NFPA 70

18

Publication Title

National Electrical Code (MV Design only)

NFPA 72

National Fire Alarm and Signalling Code

NFPA 90A

Standard for the Installation of Air-Conditioning and Ventilating

NFPA 91

Standard for Exhaust Systems for Air Conveying of Vapors, Gases, Mists, and Non-combustible Particulate Solids

NFPA 92

Standard for Smoke Management Systems

NFPA 92A

Standard for Smoke-Control Systems Utilizing Barriers and Pressure Differences

NFPA 92B

Standard for Smoke Management Systems in Malls, Atria, and Large Spaces

NFPA 96M

Standard for Ventilation Control and Fire Protection of Commercial Cooking Operations

NFPA 101A

Guide on Alternative Approaches to Life Safety

NFPA 101B

Code for Means of Egress for Buildings and Structures

NFPA 110

Standard for Emergency and Standby Power Systems

NFPA 130

Standard for Fixed Guideway Transit Systems

NFPA 170

Standard for Fire Safety and Emergency Symbols

NFPA 497

Recommended Practice for the Classification of F lammable Liquids, Gases, or Vapors and of Hazardous ( Classified ) Locations for Electrical Installations in Chemical Process Areas

NFPA 502

Standard for Road Tunnels, Bridges, and Other Limited Access Highways

NFPA 2001

Standard on Clean Agent Fire Extinguishing Systems

As noted in SC-7 of Contract Document Exhibit B t he latest version of the standards and codes (at the start of design (08 Jan 2011)) are applicable.

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3.

Design Software

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Design Software 3.1.

Mechanical Design

The following software will be used for the design of m echanical services;

Appendix A Calculation Type

Appendix B Applicable Software/Ca Software/Calculation lculation Methodology

Heat gain calculations and energy modelling to ASHRAE 90.1

Carrier E2-11 HAP v4.5

Duct system pressure loss

Excel spreadsheet (procedure as per ASHRAE)

Pipework system pressure loss

Excel spreadsheet (procedure as per ASHRAE)

Attenuator calculations

Trane TAP and Excel spreadsheet (procedure as per ASHRAE)

CFD internal environmental modelling

Star CCM+ (Adapco)

3.2.

Plumbing Systems Design

The following software shall be used for the design of plumbing systems;

Appendix C Calculation Type

Appendix D Applicable Software/Calcu Software/Calculation lation Methodology

Pipework system pressure loss

Excel spreadsheet (procedure as per IPC)

Drainage systems

Excel spreadsheet (procedure as per IPC)

3.3.

Fire Protection Systems Design

The following software shall be used for the design of fire protection systems;

Appendix E Calculation Type

Appendix F Applicable Software/Ca Software/Calculation lculation Methodology

Sprinkler system design

HASS

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3.4.

22

Electrical Systems Design

The following software shall be used for the design of electrical systems;

Calculation Type

Applicable Software/Calcula Software/Calculation tion Methodology

Lighting calculations – back of house areas

Dialux / Relux

Lighting calculations – Front of house areas

Dialux / Relux/AGi32

Lighting calculations - External

Dialux

High mast lighting ; BS5489

‘Visual’

Tunnel Lighting

LITESTAR 10

Cable size calculations

AMTECH (to BS 7671, IEE 17 with Amendment 1) code requirements)

Earthing calculations

Excel spreadsheet (procedure as per IEE + BS7430)

Generator Sizing

Caterpillar software + 30%

Short Circuit calculations LV


Volt Drop


UPS sizing calculation

Excel Spreadsheet (Connected load + spare 30% (load schedule))

ECBS Sizing calculation

Excel Spreadsheet (Connected load + spare 30% (load schedule))

th

th

th

PFC Sizing Calculation / Magnetizing KVAr of the fixed step of the capacitor Electrical load calculations and equipment sizing (Transformer sizing)

421-422-A000-DF-G-RPT-00020-D

Spreadsheet (kW {tan (cos-1 (pf1)) – tan (cos-1 (pf2))}) Excel spreadsheet. Excel spreadsheet


4.

General Design Parameters

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25

General Design Parameters 4.1.

General Design Parameters

The following weather data shall be used for the design of the building services;

Parameter

Value

Latitude

21º 30’ N

Longitude

39º 12’ E

Altitude

2 to 6m above mean sea level

GACA KAIA Basis for Design 2.2

Mean annual rainfall

63.2mm

Maximum 100 year 24 hour rainfall

109.5mm

BLP Report S23-REP-04, Issue 2 dated 30 Nov 2010, Appendix 1, issued under DAR letter 1) DAR/SBG421/0140 BLP Report S23-REP-04, Issue 2 dated 30 Nov 2010, Issued under DAR letter DAR/SBG421/0140

Max design rainfall

100 year IDF curve

DAR/SOL (see 6.8)

49ºC

KAIA Basis for Design 2.3

44.4 ºC

Exhibit D Special Specification D2

29.4 ºC


11ºC


Absolute maximum ambient (external) temperature Design maximum dry bulb temperature Design maximum wet bulb temperature Absolute minimum ambient temperature Relative Humidity Relative Humidity average monthly maximum Relative Humidity average monthly minimum Relative Humidity average monthly mean

100% max 3% min 100% except February which is 90%

Data Source

GACA KAIA Basis for Design 2.3 GACA KAIA Basis for Design Table 1

4% to 10%

GACA KAIA Basis for Design Table 1

50% to 67%

GACA KAIA Basis for Design Table 1

Maximum wind speed

93kph


Max wind pressure at ground level on flat surface

48kg/m²


Daily average wind speed

5.9m/s

ASHRAE Fundamentals

Prevailing wind direction

North


Seismic Zone

2A


Weather Phenomena Occurrence

Table 2

GACA KAIA Basis for Design

421-422-A000-DF-G-RPT-00020-D


Parameter

Value

26

Data Source

Building Weight for cooling Various, but mainly lightweight ATKINS load calculations Electrical tariff for LEED/ASHRAE 90.1 Flat, local rates ATKINS calculations 1) Summated from appendix appendix 1. This report is of very poor reprographic quality, however, however, value is in line with other sources and is only for information as this parameter is not used by design calculations.

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5.

Mechanical Systems

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5.1.

29

General

Refer to contract documents No. J-10-421-PF-0 Exhibit D-Special Specifications, Part-D1, clause 2.5. Mechanical Requirements and J-10-422-PF-0 Exhibit D-Special Specifications, Part-D1, clause 2.5. Mechanical Requirements. The following contains extracts from the above referenced document and additional design data sourced by Atkins. This section should be read in conjunction with specific building criteria in Appendix A and general parameters in section 5.1. In the event of a discrepancy, this section supersedes 5.1 and Appendix A supersedes this section.

5.2.

Basis of Design – External Design Temperatures

Parameter

Value

Data Source

Dry bulb design temperature

44.4ºC (1)

Exhibit D

Wet bulb design temperature

29.4ºC (1)

Exhibit D

Winter dry bulb

11.1 ºC

Exhibit D

Weather year used by the cooling and heating load and energy model

As Carrier HAP weather data

ATKINS

(1) These values are in excess of the non coincident 0.4% peaks quoted in the appendix of ASHRAE F14 and will lead to increased plant sizes.

5.3.

Basis of Design – Heat Rejection

Parameter

Value

Data Source

Wet bulb design temperature

29.8ºC

ASHRAE Fundamentals

Dry bulb design temperature (all condensing units to operate, albeit at reduced capacity at a maximum temp of 55 ºC)

44.4ºC

Exhibit D

5.4.

Basis of Design – Internal Conditions General Areas

Parameter

Value

Data Source


21ºC ±1ºC

Exhibit D (1)

Relative Humidity

55% RH (peak)

Exhibit D

Internal noise level

Refer to Appendix A room data sheets

ASHRAE Applications A47 Table 42

(1) Exhibit D omits to provide the tolerance, but this is required.

421-422-A000-DF-G-RPT-00020-D


5.5.

30

Basis of Design – Internal Conditions Laboratories/ Special Equipment Rooms

Parameter

Value

Data Source


21ºC ± 1ºC

Exhibit D

Relative Humidity

50% ± 5% RH

Exhibit D




5.6.

Basis of Design – Internal Conditions Computer and Communication Rooms

Parameter

Value

Data Source


No less than 20ºC

Exhibit D

Relative Humidity

No less than 50% RH

Exhibit D

Maximum dry bulb design temperature

25 ºC

Exhibit H

Maximum Relative Humidity

60%

Exhibit H




Data Hall design condition

20°C to 25°C 40% to 55% RH Max dew point poi nt 21.0°C 21.0°C Max rate of change: 5°C per hour

TIA-942

5.6.1.

Basis of Design – All Rooms Not Covered by MEP Basis of Design 6.4 to 6.6 inclusive

Parameter

Value

Data Source


As noted in design condition tables and scheduled in Appendix A

Exhibit H

Relative Humidity

As noted in design condition tables and scheduled in Appendix A

Exhibit H




APM tunnel maximum design dry bulb temperature

33°C +2K

Exhibit D (1)

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31

(1) Exhibit D states 35°C and does not set a tolerance. The tolerance has been added so that designers can assess and identify the air-movement regimes in this non temperature critical space. This tunnel space will be provided with mechanical cooling to achieve the design temperature

5.7.

Basis of Design – Emergency Chilled Water, Room Temperature

In the event of a general power failure, the Load Centre generators will operate and a reduced capacity of chilled water will be generated. Buildings or parts of buildings that are not eligible to receive emergency chilled water will have a close down sequence where all motorised control valves stroke to the closed position. Buildings eligible for emergency chilled water will have air temperature set points adjusted to 27°C.(Source: ATKINS). The regime for achieving this w ill vary according to the type t ype of plant to be controlled and the criticality of continuing to provide cooling in such a circumstance. A strict adherence to a lower air supply rate together with the rescheduling of the space temperature may be applicable. A detailed assessment of how to use the available load load to each facility will need to be made. A loading schedule and control regime will be put in place.

Parameter

Value

Data Source

Emergency room temperature and basis of emergency load computation

27°C

Exhibit D, 2.5.3.5

Building facilities that will receive emergency chilled water

Tables 4, 5 and 6

Exhibit H CP08-C100-SD-M-RPT0100-B, page 12

5.8.

Cooling Load Computation

Introduction

This section sets out the methodology for the presentation of cooling load calculations. Individual building cooling loads are fundamental to correctly sizing plant equipment and site utility provisions. By adopting a common approach, the quality of design information can be better assured so as to: Ensure buildings are provided with sufficient cooling and ventilation to meet the internal environmental requirements as set out in the basis of design. Provide value in the selection of size and duty of mechanical mechanical plant and site wide cooling infrastructure, with secondary benefit to supporting electrical and water services.

•

•

The submission of information is to be provided in six stages. Each building team will submit information for every stage with increasing level of detail for progressive stages. This approach has been adopted so that the calculations carried out for a particular stage can be used to validate the loads derived in future stages and allow other members of the project teams to progress with their work packages. The stages are summarised as follows: Stage 1. Overview 1. Overview loads, to be derived from the designer's initial assessment of the building, based on its intended usage and information provided to date from the previous documentation (Exhibits D&H). Only total building loads are required at this stage. Stage 2. Sample 2. Sample calculations, to be derived by calculation of typical building areas. The calculations shall be sufficiently detailed to assess the major contributing factors to the loads and then be multiplied to derive an overall building load. Stage 3. Full 3. Full building loads, to be derived from a complete assessment of the building, as calculated using approved software and submitted according to the procedure defined in this document. These final loads shall be used for the basis of plant selection and submitted in full to the client. Stages 4 & 5. As 5. As Stage 4, but capturing all facilities that have lagged behind schedule (e.g. Rail Station) and other final information such as confirmed process loads. 421-422-A000-DF-G-RPT-00020-D


32

Stage 6.Annual 6.Annual load assessment, to be derived using Hourly Analysis software (in accordance with ASHRAE 90.1) and submitted according to the procedure defined within this document. The purpose shall be to illustrate typical annual energy consumption and provide evidence in support of the building LEED assessment credit EAC1. The format and procedure for submitting load information is defined below:. Stage 1. The stage 1 building assessment will consist of an initial summary of each building's cooling requirement as determined by each building design team's initial assessment of cooling loads. These will mainly be a repeat of the ADPI calculated loads given in exhibit H technical reports and verified by the design teams. Where additional information is available from other early assessments then this will also be included. Stage 2. The stage 2 building assessment shall provide a summary breakdown of each building's cooling load. The basis of calculation shall be to carry out detailed calculations on discrete building areas which can be scaled up to give a total for the building as a whole. Where this is not possible (due to the size and complexity of the building and level of architectural information available) a further breakdown of the stage 1 building assessment will be permitted. The intention of the stage 2 calculations will be to inform the utility infrastructure team of the likely loads from each building so that they can progress with the design of the piped site wide Chilled Water distribution network. At this and subsequent stages all loads will be broken down into the following categories: Environmental Casual Outdoor Air Fan/Pump Process Stages 3, 4 & 5 The stage 3 building assessment will contain full detailed cooling load / chilled water calculations for each building. The calculations shall be carried out using the approved software and provide a full and detailed assessment of the building loads. The overall load will be used as the basis of selection for main chiller plant within the load centres hence the figures provided must be for maximum simultaneous cooling load. The definition of which is the peak load from all buildings served by a load centre and is obtained by the summation of all the building load profiles. It is not the summation of each building’s peak load as these will occur during different times of the day and would lead to an over assessment. In terms of occupant and process loads, these shall be diversified according to the maximum allowable simultaneous occupancy / process requirement of the building (not the total of maximum allowable occupancies of each space). The environmental conditions shall also be considered in terms of their net peak effect on the building (e.g. the peak gains arising from the combined effect of both solar gain and external air temperature). No further margins or safety factors shall be included unless stated to fulfil a specific unknown quantity such as air leakage from ductwork which cannot be accurately determined until installation / commissioning. The approach to thermal modelling and load calculations can vary between engineers. The following text will act as guidelines for continuity b etween engineering teams: 1.

All calculations calculations should should be carried out using steady steady state state analysis, analysis, backed backed up by thermal models for verification where appropriate and where helpful in determining environmental load diversity.

2.

Treatment of infiltration - an allowance shall be made where background ventilation rates are insufficient to over pressurise the building. For example where an over pressurisation equivalent t o 0.7 ACH (air changes per hour) is required, but not met purely by occupant fresh air requirements, then additional air flow rates shall be included in the calculation to meet the 0.7 requirement. Equally where over pressurisation is not overtly mentioned in the contract documents, then

421-422-A000-DF-G-RPT-00020-D


33

infiltration rates shall be included (depending on facade leakage specification) and expected in the region of 0.2 to 0.3 ACH, gross of any contribution from fresh air supply. 3.

Building weights weights should should be be input input as lightweight as the majority majority of of buildings will have have very very little exposed concrete/ thermal mass.

4.

Air system system types types should should be selected selected appropriate to the ventilation strategy. In the majority of cases cases this shall be structured so that the designers may distinguish between supply air ventilation load and building load.

5.

Assumptions shall be listed for internal gains where they are in addition to the contract contract documents, documents, with reference to the appropriate ASHRAE document.

6.

The temperature profiles of unconditioned spaces (corridors, toilets, basements basements etc), which are a function of outside temperatures, shall be d etermined, on a case by case basis and documented.

7.

Solar gains gains shall take cognisance of natural natural shading shading from building building overhangs overhangs and recesses as well as the properties of the building fabric.

8.

Reporting shall be in a standardised standardised format as determined by the central project team.

Stage 6. Full building energy models will need to be provided to satisfy LEED credits and all buildings within the LEED boundary will need to be modelled according to ASHRAE 90.1 App G. For further information refer to the section in this document which covers LEED assessments. In line with the ASHRAE 90.1 protocol the computed energy consumption will not reflect the actual energy consumption, because under the protocol some loads such as process are ignored.

5.9.

Chilled Water

Load Centres shall provide chilled water for cooling purposes to all the airport 421 and 422 buildings, with the exception of remote buildings like the radio sites, lighting vaults, etc.. All secondary and tertiary pumps will have variable speed drives. As part of the chilled water utility design, differential pressure valve sets will be provided at chilled water entry points to maintain a constant differential pressure. Control to all cooling coils, etc. will be by 2-way pressure independent control valves. The chilled water system will be variable flow to reduce pumping energy and to t o ensure maximum chilled water return temperatures are achieved. The total chilled water requirement shall be based on maximum cooling load calculation for all the served buildings with 20% spare capacity. (source: Exhibit D) Loads shall be calculated utilising Carrier E2-11 HAP v4.5 software. (source: ATKINS) BMS monitored chilled water energy meters will be provided at the point of entry to core and shell areas. (source: Exhibit D, 2.5.3.5). Critical buildings are provided with local chiller(s) that back up the site-wide chilled water system to achieve the required level of resilience. Important buildings will receive emergency chilled water from the site-wide chilled water network. The proportion of chilled water load met by the emergency chilled water is as defined in 5.7, above and as detailed in the load center load schedules. When there is a power outage at the load centers the MV generators will provide power to the cooling plant so that it can generate the required amount of chilled water. Given that the generators take up to 10 minutes to take up the load and other loads will take priority over the chillers the chilled water will not be available immediately. Since rooms with high heat gains (e.g. comms rooms) will suffer fairly rapid temperature spikes, the chilled water pumps will operate in the load center within 60 seconds of the power outage to give continuity of supply and prevent high temperature trips on critically im portant equipment.

421-422-A000-DF-G-RPT-00020-D


5.10.

34

Basis of Design – Chilled Water Networks In Facilities (1)

Parameter

Value

Data Source

Temperature of water delivered to each facility

5.0ºC (2)

Exhibit D

Temperature of water returned from each facility

14.0ºC

Exhibit D

Spare capacity

20% (at inlet headers)

Atkins

Maximum temperature rise and pressure drop through pressure break heat exchanger on both hot and cold fluids.

1K 50 kPa

ATKINS (based on industry normal practice)

Method to allow the 20% spare capacity in buildings

Spare valved branches in plant rooms or building entry points.

ATKINS

Pipework specification

Steel, Sch 40

Exhibit D (interpreted by ATKINS on pressure)

Assumed fill/standing temperature

38ºC

ATKINS (derived by ATKINS from ASHRAE F14 and field experience)

Imposed static head

Refer to the pressure study in the Chilled Water Utility design report

ATKINS Utility Designer

Minimum static pressure at high point

1.0 bar (g)

ATKINS

Average pipe pressure drop

200 Pa/m (index)

ATKINS (derived from ASHRAE F09)

Max pipe pressure drop

400 Pa/m

ASHRAE F22

Max water velocity

1.2m/s ≤50mm, 3m/s >50mm

ASHRAE F22

Two port valve minimum authority

0.30

ASHRAE S46

Two port valve maximum design authority

0.50

ATKINS (derived from ASHRAE S46)

Pipe Sizing Standard

ASHRAE F22

ATKINS/ Exhibit D

Differential pressure at building point of entry

350kPa (3) (PTB) 250kPa (other buildings)

Exhibit H CP04-C255-SD-M-RPT0100-C page 15

Chilled water pump margin

5% (flow), 10% (pressure)

ATKINS

Acoustic and vibration requirements

Refer to Atkins’ acoustics reports and ASHRAE noise targets referenced in this documents

ATKINS/ASHRAE

Plate Heat Exchanger (PHEX) Locations

ATCT, data center redundant supply

ATKINS/Exhibit D

PHEX Provision

2 x 100% (facilities) 1 x 100% (generator cooling tower)

ATKINS

421-422-A000-DF-G-RPT-00020-D


Parameter

Value

PHEX Temperature Difference

1K (ATCT)

2K(Data Centers) (1) Refer to Utilities BoD for external external utility information.

35

Data Source

(4)

ATKINS

(2) Will be 4.5° 4.5°C C in load centres (3) This value may be be reduced to 250kPa 250kPa as part of of an initiative to reduce pipework pipework pressure rating. (4) Due to 7°C chilled water supply temperature due to high proportion of of sensible loads

5.11.

Fresh Air Ventilation

The ventilation rates shall be based on the recommendations of ASHRAE Standard 62.1-2007 and LEED NC v 2.2 EQ PreReq 1, whichever is the greater. In rooms that are in contact with the building envelope the supply rate shall exceed the extract rate by 5% to achieve a positive pressure within the building as required by Exhibit D. All outdoor air handling units with a duty above 1.0m3/s will be equipped with purged, enthalpy rotary wheels with a ‘total heat’ recovery efficiency target of 80%. This target is defined on the basis of an exhaust airflow rate of 90% of the supply air rate. A 25% fouling degradation in heat recovery efficiency shall be assumed for the purpose of outdoor cooling/dehumidification coil sizing. Load and energy calculation shall assume an average 10% energy fouling degradation reduction. [source: ATKINS based on industry best practice for Middle Eastern environments] In some parts of some facilities there are many natural and mechanically forced leakage paths. These include: pressurisation air leaking through the envelope, air escaping down air bridges & BHS apatures, , remote local extract systems, remote toilet extract systems, etc.. This combined with in some cases the reuse of secondary air results in a situation where there is little or no exhaust at the location of the outdoor air air handling unit. In these cases, enthalpy wheel will not be applied if the volumetric flow balance defined in ASHRAE 90.1 clause 6.5.6 is not met..

5.12.

Dedicated Exhaust Air Systems

Dedicated mechanical exhaust air ventilation systems with make up from central systems will be provided to garbage rooms, battery charging rooms, toilets lavatories and kitchens and any other areas noted as requiring such in ASHRAE 62.1-2007. Explosion proof fans will be provided to rooms such as garbage, UPS and battery charging. Anti-back flow dampers shall be provided on makeup air to potentially contaminated rooms such as those used for garbage.(source garbage.(source:: Exhibit D). Exhaust air rates will be as defined in the above standard, however, for process areas such as kitchens and laundries extract rates will be based on the equipment requirements and ventilation rates will be provided by the specialist kitchen consultant.

5.13.

Dedicated Supply and Exhaust Air Systems

The same requirements as those described for dedicated exhaust air systems but shall also be provided wit h a dedicated supply system that does not supply air to any other area. Supply and exhaust systems are required for storage rooms, technical rooms and chemical rooms. (source: Exhibit D) Refer to individual building ‘Criteria for Design’ for actual requirements. Where general unspecified store rooms are identified and located within areas containing rooms such as offices these may be supplied with air from the same system that serves the offices. The extract from the store rooms will not be recirculated.

5.14.

Refrigerant Ventilation Management

In enclosed rooms that contain refrigeration plant and equipment ventilation shall be provided to purge escaped refrigerant gas. (source: Exhibit D) 421-422-A000-DF-G-RPT-00020-D


36

Refrigerant gas leak detection will be provided and the ventilation will be designed in accordance with ASHRAE Standard 15-2007

5.15.

Kitchen Ventilation

Kitchens will be served by dedicated fresh air AHUs and extract fans. Sufficient air will also be supplied to the kitchen to provide adequate ventilation for occupants and to offset heat gains. This air will be supplied by an air handling plant with filtration, and cooling functions. No heat recovery will be provided on kitchen AHUs due to the risk of fouling. Canopies will be a design that incorporates an energy saving feature where untreated fresh air is injected into the canopy to reduce the exhaust requirement by 40% (i.e. "Capture Jet" by Halton) The untreated fresh air for injection will be supplied by a separate air handling unit that will comprise a fan and filter. In the case of small kitchens (less than 100m2) or remote canopies, consideration will be given to deploying a solution where capture jet air is provided by a local fan (part of canopy) that takes air from the kitchen. Air will be extracted from the canopy by dedicated extract fans via fire proof ductwork. The fans will be zoned so that specific canopies or sections of canopies can be activated during the night period when the kitchen is used for room service alone or just stock pots are simmering. No fire dampers will be provided within kitchen extract ductwork. Ductwork shall be accessible for manual cleaning throughout its entire length. Access doors for this purpose shall be provided at every 1.5m centres. Kitchens will be designed so that they operate at a negative pressure. Dishwasher extracts will initially be in insulated and of welded stainless steel ductwork which will be water tight and graded back to the dishwasher to avoid problems with condensation. Where there is a risk of odours recycling to sensitive areas, consideration will be given to the need to reduce fumes from the kitchen exhaust with fume scrubber which will comprise a water wash / electrostatic filter type)or canopy integrated UV scrubbers. Kitchen exhausts will be at high level where possible and jetted vertically upwards. Where this is not achievable the need to consider fume scrubbing may take on greater significance. Make up air) will be supplied by dedicated AHUs . In larger kitchens (>75m2) a chefs control panel will be provided in the chef’s office to control ventilation.

Parameter

Value

Data Source

Kitchen canopy extract rates

To be advised by the kitchen consultant

ATKINS

Minimum velocity for canopy exhaust

8 m/s

ASHRAE A31

Make up air supply temperat temperature ure

25°C 25° C

ATKINS

5.16.

Car-park Ventilation

In accordance with NFPA 88A Standards for Parking Structures 2007, A mechanical ventilation system is not required for open parking structures on this project. NFPA 88A identifies an open parking structure as:

421-422-A000-DF-G-RPT-00020-D

KAIA Package 421 and 422 – MEP Basis of MEP Basis of Design Report •

•

•

37

Each parking level shall have wall openings open to the atmosphere, atmosphere, for an area of not less than 0.4 m2 for each linear meter of its exterior perimeter Such openings shall shall be distributed over over 40 percent of the building perimeter or uniformly over over two opposing sides Interior wall lines and column lines shall be at least 20 percent percent open, with openings distributed to provide ventilation.

5.17.

Cold Smoke/Gas Removal

Priority 1 Critical buildings will be provided with dedicated smoke extract systems in room that are provided with clean agent fire suppression systems. The system will comprise an extract only system designed to clear smoke in 15 minutes. A motorised smoke and fire damper will be provided in the wall of t he room and shall be normally closed. A dedicated cold extract system will be provided and it is permissible to connect several rooms. The design will only allow for one room to be evacuated at any one time and the fan and damper will be controlled from the fire/smoke damper panel or the BMS/i2BS head end. Other buildings will use the primary ventilation system to exhaust cold smoke and here the extract grille will be located at the opposite end of the room. However, it must be ensured that air extracted by this method is not recirculated to other rooms when used in the cold smoke exhaust mode.

5.18.

Battery Room Ventilation

Battery rooms shall be mechanically ventilated to prevent the accumulation of Hydrogen gas reaching dangerous levels. The airflow required shall be based upon the emission of gas during charging or overcharging and limit the concentration of Hydrogen to 2% (ASHRAE Application Handbook). A factor of safety of 1.5 will be applied when selecting fans and sizing ductwork. Extracted air shall be removed from the room at high level via a dedicated system of fan and ductwork exhausting directly to outside. Make up air shall be via a ducted system direct from outside. Fans shall be explosion proof with operation initiated by a hydrogen detector (set point 1%) located at ceiling level in the battery charging room. No unventilated voids above ceilings in battery rooms will be provided. Fan operation shall be interlocked with the battery charger to prevent charging if the fan operation is not verified by an airflow detector located in the extract ductwork.

5.19.

Road Tunnels and Underpasses Ventilation

The ventilation for the tunnels and underpass shall be designed in accordance with NFPA 502 Standard for Road Tunnels, Bridges, and Other Limited Access Highways and will be based on the critical velocity method.

Parameter

Value

Data Source

CO under all free flowing and congested conditions CO under all standstill conditions

70 ppm, free flowing to congested traffic, 100ppm, standstill condition

PIARC 2004

100ppm

PIARC 2004

NO2

1 ppm

PIARC 2004

Visibility

Free flowing traffic 0.005/m Congested traffic 0.007/m

PIARC 2004

421-422-A000-DF-G-RPT-00020-D


Parameter

Value

38

Data Source

Standstill traffic 0.009/m Traffic Design Speed

70 km/h

Exhibit D

Percentage of Heavy Truck

20%

Table 2.02.2 of Highway Design Manual Volume 1

Oil Tanker in Tunnel

No

ATKINS

Design Fire Size

70 MW

NFPA 502 2011

Tunnel Air Velocity

8 m/s

Exhibit D

Emergency Ventilation type

Longitudinal

Exhibit D

5.20.

Air Conditioning / Comfort Cooling

All spaces will be cooled to the requirements for the particular room or space. Generally, central air handling units will be utilised to provide cooling and ventilation and will incorporate energy recovery wheels where these units are not supplied with conditioned outdoor air by an outdoor air AHU. Constant air volume (CAV) systems will be provided to public spaces and variable air volume (VAV) for grouped offices. VAV Air handling units shall be furnished with variable speed control. The use of Fan coil units will be kept to a minimum subject to room/space application. (source: Exhibit D, 2.5.3.5). All air handling units and fans shall be supplied with power via a variable speed drive (VSD). Many plant although operating at fixed speeds will operate at different fixed speeds through the operating period. This will be part of the control philosophy for each system. The VSD also allows the system to be commissioned more quickly and more accurately to the installed conditions. It provides flexibility for future changes and promotes efficient operation of the systems. Cooling and ventilation air to core and shell areas will be provided with capped ductwork with metering systems connected to the BMS. (source: Exhibit D, 2.5.3.5) In the data centres the design basis using CRAC, PAU and CDU units shall be deployed as described in Exhibit H, document CP10-19-H100-SD-RPT-0100-B. (source: ATKINS). Water pipework and valve trains shall be kept out of the rooms wherever possible. Secondary Sub-station rooms are mechanically cooled when MV and /or LV switchgear is located in the same room. This is to be achieved achieved by utilising re-circulating re-circulating air handling units units or large double skinned fan coil units which re-circulate cooled air to the room via a system of ductwork. Each individual sub-station room is served by 2 No. re-circulating air handling units both rated at 100% of the cooling load and both shall operate at once, at 50% capacity each. The units are controlled by temperature within the space. Both units are monitored by the BMS system and in the event of a fault in one of the units the BMS shall automatically switch over to the other unit to provide the full cooling load. In case of a power failure the air conditioning shall remain operational in these rooms to maintain a maximum temperature of 27°C 27°C db. The re-circulating r e-circulating air handling units cooling coils utilise the on-site chilled water system. Where transformers are located in dedicated rooms, mechanical cooling can be avoided and dissipated heat dealt with by ventilation alone using natural ‘cross flow’ or high level mechanical extract with low level air intake. This does not apply to data centers given the very high availability requirements. Comms rooms are air conditioned, by utilising ‘Computer Room Air Conditioning’ (CRAC) type units within the room to monitor and regulate the temperature and humidity. Each Comms room will have a minimum of 2 No. CRAC units both rated at 100% of the cooling load and shall both operate at once at 50% capacity each. They shall be down-flow down-flow air units, wherever possible. The units are controlled by integral temperature and humidity sensors. Both units are monitored by the BMS system and in the event of a fault in one of the units the BMS shall automatically switch over to the other unit 421-422-A000-DF-G-RPT-00020-D


39

to provide the full cooling load. In case of a power failure the air conditioning shall remain operational in these rooms to maintain a maximum temperature of 27°C db. The CRAC units cooling coils utilise the on-site chilled water system. Cooling to each facility is provided by chilled water pipe connections from the airport wide piped chilled water distribution system. At each connection there is located a differential pressure valve to ensure a constant pressure is achieved. This is designed by the utility team under package 422. Each facility designer is then responsible for the control of chilled water to each terminal unit within the facility. The terminal units might be air handling cooling coils, fan coil units or plate heat exchangers. The branch pipework will vary in length and complexity of distribution. Each terminal unit will be controlled by a 2-port motorised control valve, CV. Differential pressure valves, DPVs, are used at sub-branches within the facility to provide constant pressure control to groups of terminals within a reasonably close proximity of each other. A number of air handlers in a single plantroom may constitute a branch for a DPV. A string of fan coils, perhaps 10 number maximum, or a number within 20m of each other may constitute a branch for a DPV. This allows the chilled water system to be divided into smaller sub-circuits for the purposes of sizing the CVs associated with the terminals on that circuit and allows each sub-circuit to be commissioned independently of other sub-circuits. Each CV is to then be sized to give an authority of N=0.5 based on the resistance of the sub-circuit under the pressure control of the sub-circuit DPV. The design incorporates separate DVPs and CVs to suit the configuration described above. Procurement of valves may determine that DVPs and CVs are combined in a Pressure Independent Valve, PIV, associated with each terminal. Perhaps a combination of DPVs and CVs with some PIV would be of benefit. These valve selection scenarios would be based on the range of valves offered by manufacturers. A number of scenarios is possible to meet the strategy explained.

5.21.

Basis of Design – Cooling and Ventilation

Parameter

Value

Data Source

Minimum fresh air rate

ASHRAE Standard 62.1-2007

Exhibit D

Pressure with respect to adjacent areas

ASHRAE A7.6 Table 3

ASHRAE Applications handbook

AHU/FCU cooling output margin

10%

DAR Reply to Submittal 421-DDT-G00174 dated 11 Sept11

VAV box output margin

10%

ATKINS

VAV system diversity

Calculate on a system by system basis

ASHRAE A37.5

Diffuser terminal velocity (in occupied zone)

0.15 to 0.25 m/s

ASHRAE F20 and Standard 55

Max ductwork pressure drop

1Pa/m

ATKINS (derived from ASHRAE F21 Duct Friction Charts)

Max ductwork velocity – trunk mainIn Shaft (Supply)

NC45 NC35

17.8m/s 12.7m/s

ASHRAE Applications 2011 A48Table 8

Max ductwork velocity – trunk mainAbove Ceiling (Supply)

NC45 NC35

12.7m/s 8.9m/s


Max ductwork velocity – branch In Shaft (Supply)

NC45 NC35

14.2m/s 10.2m/s


Max ductwork velocity – branch

NC45

10.2m/s

Above Ceiling (Supply)

NC35

7.1m/s


Max ductwork velocity – trunk mainIn Shaft (Return)

NC45 NC35

17.8m/s 12.7m/s


Max ductwork velocity – trunk mainAbove Ceiling (Return)

NC45 NC35

12.7m/s 8.9m/s


421-422-A000-DF-G-RPT-00020-D


Parameter

Value


NC45

14.2m/s

In Shaft (Return)

NC35

8.9m/s


NC45

10.2m/s

Above Ceiling (Return)

NC35

7.1m/s

Max ductwork velocity – trunk mainIn Shaft (Exhaust)

NC45

17.8m/s

NC35

12.7m/s

Max ductwork velocity – trunk mainAbove Ceiling (Exhaust)

NC45

12.7m/s

NC35

8.9m/s


NC45

14.2m/s

In Shaft (Exhaust)

NC35

10.2m/s


NC45

10.2m/s

Above Ceiling (Exhaust)

NC35

7.1m/s

Maximum ductwork velocity – flexible duct (Supply)

NC45 NC35

3.2 m/s 2.5 m/s

Maximum ductwork velocity – flexible duct (Extract)

NC45

3.8 m/s

NC35

3.0 m/s

Maximum ductwork velocity –

NC45

3.8 m/s

Return Plenums

NC35

3.0 m/s

Maximum ductwork velocity – Exhaust Plenums

NC45 NC35

3.8 m/s 3.0 m/s

AHU fan volume / pressure margin

Data Source

5 % (volume) 10% (pressure) ASHRAE S28 Table 2 or

AHU filtration requirements

MERV 13 as LEED NC v2.2 EQ5, whichever is greater

Kitchen hood exhaust

NFPA 96

Duct sizes and design Maximum air velocity through cooling coils

40

ASHRAE F21 SMACNA 2.5m/s- No eliminator 3.0m/s – with eliminator

ASHRAE Applications 2011 A48Table 8 ASHRAE Applications 2011 A48Table 8 ASHRAE Applications 2011 A48Table 8 ASHRAE Applications A47.8 ASHRAE Applications A47.8 ASHRAE Applications A47.8 ASHRAE applications 2011 Table 9 ASHRAE applications 2011 Table 9 ASHRAE applications 2011 Table 9 ASHRAE applications 2011 Table 9 Exhibit H ASHRAE Applications handbook LEED Action Plan Exhibit D Exhibit D, 2.5.3.5 ASHRAE F21 and Exhibit H

Not to exceed code values for ‘main fan’ that include:

Maximum specific fan power (SFP)

<9.44 m3/s: 1.9 W per l/s (CAV) 2.7 W per l/s (VAV) >=9.44m3/s:

ASHRAE 90.1 (2010)

1.7 W per l/s (CAV) 2.4 W per l/s (VAV) Sand Trap Intake Louvre face velocity and pressure drop

1.5m/s (max) (η ≥ 80%) (1) 0.75m/s (min) (η ≥ 90%) (1) 75 Pa (max)

ATKINS (based on TROX data)

Maximum exhaust louvre face velocity and pressure drop.

2.5m/s

ASHRAE F21

Maximum anti-backflow damper

<200l/s per m2 at 500Pa

ATKINS (based on TROX low

421-422-A000-DF-G-RPT-00020-D


Parameter

Value

leakage rate

41

Data Source leakage data)

Transformer room natural ventilation

Two louvres each with 4m2 (free area) per MVA of located to provide cross flow ventilation

Atkins (from DEWA data)

Airflow rate determined from a 5.5K temperature difference. Transformer room forced ventilation

Intake louvre to be located at low level in the external wall.

Atkins (from DEWA data)

Extract air intake to be located at high level in the room

(1) Based on a particle size of 200 to 700 microns

5.22.

Fire and Motorised Fire & Smoke Dampers

Fire dampers will be provided in all fire compartment walls and barriers and shall be of the same fire rating, however, fire dampers with a rating below 2 hours will not be used. Motorised Fire and Smoke dampers shall be provided in locations as defined in NFPA 90A. Motorised Fire and Smoke damper groups will be split into zones and hard wired to a local MFSD control panel that shall annunciate damper status, annunciate an alarm if a damper is not correctly positioned and allow manual over-ride and resetting of MFSDs. Additionally, the local panel shall be interfaced with t he fire alarm system, the BMS and/or the I2BS.

5.23.

Special Systems – Central Vacuum Cleaning Systems - PTB

A Central Vacuum Cleaning System includes a powerful vacuum unit fixed in a suitable location (such as a mechanical plant room). It is connected by a run of pipework to a number of hose connection points strategically placed throughout the facility to be cleaned. To clean an area, the operator plugs a hose into a convenient connection point. When the end of the flexible hose is inserted into the socket the vacuum unit automatically switches on. Using an appropriate collection tool the operator cleans the accessible area, before moving the hose to another connection point. Entrained material is conveyed through the pipe system, where it separates from the air stream in the filter unit and is collected for future disposal The vacuum unit is sited indoors, preferably in a plant room, where it is ventilated. It is mounted on a wall at a height which allows the dust container to be removed easily. Exhibit “D” Special Specification states: The vacuum system shall be designed based on providing a vacuum outlet at an interval of 15m by means of inlet valves distributed throughout the building.

The sockets can be installed either in the walls or the fl oor.

5.24.

Stairwell Pressurisation Systems

421-422-A000-DF-G-RPT-00020-D


42

Stairwell pressurisation systems will be provided where indicated in the facility fire report. These systems will be designed in accordance with ASHRAEA52 and ASHRAE Principle of Smoke Management (Klot and Mike: 2002) with single high level injection for 3 levels and below and multiple injection for 4 levels and above. These systems will comprise run and standby fans each rated at full duty discharging untreated outdoor air into the stairwell. Multiple injection systems will deploy a vertical builder’swork shaft within the stairwell with one outlet at least every two levels . The fans will be variable speed and designed to overcome stairwell leakage so that pressure differential across closed doors do not exceed the maximum and minimum values stipulated in NFPA92A. Additionally, fans shall be selected so that protection is provided to three open doors per stairwell.

Parameter

Value/Description

Stairwell Design Pressure (doors closed)

12.5 Pa (min)

Protected open doors

Ground and 2 others

BS 5588 (not directly addressed in US codes) based on phased evacuation

Air velocity through an open door

0.75m/s

BS 5588 (not directly addressed in US codes)

5.25.

40 Pa (max)

Data Source NFPA101 – 7.2.3.9

Aircraft Systems - Pre-Conditioned Air

Pre-conditioned air will be supplied to each aircraft stand to provide a very cold pre-conditioned air (PCA) supply for aircraft cooling. PCA AHUs will be located in the bridge nodes of the PTB and these will deliver PCA to the aircraft via under apron double skin insulated ducts to pop up pits. Each PCA AHU will be provided with chilled water and ethylene glycol (GL) that will be sourced from networks in the PTB. GL chilling plants will be provided in the PTB with heat rejection to chilled water. Basis of design information is included in Exhibit D,2.5.3.6, section F and amplified below:.

Parameter

Value/Description

Data Source

Coolant

Chilled Water (primary) Ethylene Glycol (secondary)

Exhibit D

Ethylene glycol temperatures

-7°C supply -2°C return

Exhibit D

Ethylene glycol freezing point

-19.5°C

ASHRAE F31

Ethylene glycol concentration

30%w/w

ASHRAE F31

Ethylene glycol dynamic viscosity (for pipe sizing)

5.4mPa-s (13.01 ft/lb-s)

ASHRAE F31

Ethylene glycol heat capacity (for pipe sizing)

3.57 kJ/kgK (0.853 btu/lb° bt u/lb°F) F)

ASHRAE F31

Ethylene glycol density (for pipe sizing)

1,055kg/m 3 (65.85lb/ft )

ASHRAE F31

Ethylene glycol chiller condenser water temperatures (uses injection mixed chilled water)

18.3°C entering 18.3°C ent ering 23.9°C 23.9° C leaving l eaving

Exhibit D

421-422-A000-DF-G-RPT-00020-D

3


43

Parameter

Value/Description

Data Source

PCA delivery temperature

-4°C

Exhibit D

PCA aircraft cooling capability

Refer 2.5.3.6 E

Exhibit D

PCA system load diversity

80%

Exhibit D

Availability

95% at gate

Exhibit D

External PCA Ductwork Construction

Class 125, stainless steel with welded flanges, close cell insulation and plastic outer casing with waterproof closures. (see contract documents for full details)

Exhibit D

External PCA Ductwork design life

25 years

Exhibit D

External PCA Ductwork Test Pressure

1.5x working pressure

Exhibit D

External ductwork fall (for condensation drainage)

0.5 to 1.0%

Exhibit D

PCA ductwork diameters

To suit aircraft

Exhibit D

Pop up pit details

Refer 2.5.3.6 F

Exhibit D

Noise

<85dBA at 5m from any equipment

Exhibit D

Safety

IATA compliant

Exhibit D

5.26.

Seismic Restraint of Mechanical, Plant, Equipment and Systems

Seismic restraints for mechanical and electrical services The design of the seismic restraints will be based upon UBC 1997, with a site class of zone 2A, and the FEMA and SMACNA publications. •

•

•

•

• • • •

Building Seismic Safety Council, NEHRP NEHRP Recommended Recommended Provisions for Seismic Regulations for New Buildings and Other Structures, Part 1: Provisions (FEMA 368) Building Seismic Safety Council, NEHRP NEHRP Recommended Recommended Provisions for Seismic Regulations for New Buildings and Other Structures, Part 2: Commentary (FEMA 369) Building Seismic Safety Council, NEHRP NEHRP Recommended Recommended Provisions Design Examples (FEMA 451) Applied Technology Council, Reducing Risks of of Non Structural Earthquake Earthquake Damage – A Practical Guide (FEMA E-74) FEMA – Installing Seismic Seismic Restraints for Mechanical Mechanical Equipment (FEMA 412) 412) FEMA – Installing Seismic Restraints for Electrical Equipment (FEMA 413) FEMA – Installing Seismic Seismic Restraints for Duct Duct and and Pipe (FEMA 414) SMACNA Seismic Restraint Manual, Guideline for Mechanical Mechanical Systems (ANSI/SMACNA 0010012000)

Section 1632 of UBC 1997 determines determines the lateral force on equipment equipment supported by structures. Based on this lateral force the SMACNA manual defines seismic restraints that provide lateral and longitudinal support 421-422-A000-DF-G-RPT-00020-D


44

for ductwork, ductwork, pipework and and conduits. conduits. The SMACNA seismic restraints restraints are comparable comparable to those specified in FEMA E-74 which additionally includes arrangements for wall mounted pipes, pipe risers and cable trays. Seismic restraints will be addressed by the design teams in the following three categories: A – Repetitive and Linear: Linear: Repetitive support and restraint details largely associated with single or multiple service runs in both horizontal and vertical attitude. B – Unique: Unique: Support and restraint for large/heavy objects that are not covered by categories A and C C- Plant, Equipment and Apparatus Apparatus - Design of plant, equipment and apparatus by the maker so that it can withstand an earthquake Specific Design Methodologies A – Repetitive and Linear Project structural engineer determine seismic hazard level for each building zone. Seismic designer prepare a series of standard details based on FEMA 414 and an Exhibit D2 compliant ‘pre-approved’ restraint system such as that b y SBG preferred supplier Cooper B-Line. Project MEP engineers identify restraint locations and types from guidance provided by the Seismic Designer. Contractor assemble support and restraint system from ‘pre-approved’ and certified components components in accordance with maker’s instructions.

• •

•

•

B – Unique Project MEP engineers identify items requiring restraint with loads, etc.. Services requiring restraint to be clearly indicated on the 100% drawings with seismic hazard level that prevails in that part of the building. The Contractor to retain a certified seismic engineer to design restraints in accordance with FEMA approved codes and the process defined in the various sections of Exhibit D2. Obtain approval of support from an approved agency (signed and sealed)

• •

•

•

C- Plant, Equipment and Apparatus Seismic designer review review Exhibit D2 specifications and identify any shortfalls shortfalls in seismic requirements Seismic designer prepare additional seismic notes for technical schedules. Seismic designer prepare standard details to c ompliment FEMA 412 and 413 recommendations and specified Exhibit D2 seismic requirements

• • •

General Notes The seismic restraints are additional to those required for supporting the services under self weight. The sizes of the support restraints are based upon the seismic hazard level ( SHL ) which relates to the magnitude of the seismic acceleration. acceleration. The SHL is dependent dependent on the height of the service within the building. The SMACNA procedure for the design of the seismic restraint is as follows: 1. 2. 3. 4. 5. 6.

Establish location of the service within the building. Identify the SHL based on the height of the service within the building building Select an appropriate support support arrangement arrangement for the layout of the services. Determine the support member member sizes based based on the SHL and the weight of of the services. Determine spacing of the lateral and longitudinal supports based based on the route of the service and the specified spacing defined in the SMACNA guidance. Determine the size of the structural structural connection. connection.

421-422-A000-DF-G-RPT-00020-D


45

The standard restraints included in the SMACNA guidance are: • • • • • • • •

Side bracing for rectangular ducts Side bracing for rectangular ducts with rod hangers Centre bracing for rectangular ducts Floor supported ducts Bracing for round ducts Bracing for pipes and conduit Bracing pipes on trapeze Floor supported pipes

Member sizes for non standard supports can be d esigned on the basis of the SHL. The design of the seismic restraints needs to consider: •

• • •

Where services are subject subject to significant thermal thermal expansion expansion or or contraction contraction then the restraint restraint location must consider both the seismic and thermal af fects. Providing adequate flexibility in services where they span movement joints All in line equipment equipment must be braced independently of the service. Inclusion of a factor of safety of 4 on the limit load for for anchorages. anchorages.

The services need to meet the following requirements: • •

Duct construction to conform to SMACNA Pipework construction conforms to ANSI/ASME B31.9

Spring mounts supporting rotating equipment will include seismic snubbers. Seismic restraints will be provided for all free standing equipment such as electrical panels and switchgear, water tanks etc. General arrangement drawings will be provided based upon the FEMA requirements. Final calculations, sizing and detail drawings will be provided by a specialist supplier.

5.27.

Acoustic and Vibration – Mechanical Systems

Refer to Exhibit D1 clause 2.1.2.2 and 2.1.3.2 for general requirements. Refer to the Atkins acoustic reports for further details.

Parameter

Value/Description

Data Source

Grilles, diffusers and registers

Selected so that catalogue NC rating does not exceed that of the room NC target

ATKINS (based on ASHRAE F09)

AHU attenuator selection

Use Trane TAP

based on ASHRAE F09

AHU attenuator siting

Site attenuators in locations with a uniform (1 dimensional) air-flow. Place at point of exit from plant rooms to avoid noise break in. If this is not possible clad ductwork with a sound barrier mat between attenuator and the point the ductwork passes through the plantroom wall.

ASHRAEA47

VAV box

Use Trane TAP

based on ASHRAE F09

VAV attenuator siting

Site attenuator as close to the VAV box outlet as possible and clad interconnecting ductwork with acoustic

ASHRAE A47

421-422-A000-DF-G-RPT-00020-D


Parameter

Value/Description

46

Data Source

barrier mat.

Attenuator max resistance

50 Pa (AHUs) 25 Pa (VAV boxes) Deploy bullnoses and evasies, if required.

ATKINS

FCU attenuation

Select FCU with low noise output and provide inlet plenum with acoustic duct lining. Provide sound acoustic duct lining to all ductwork and if possible include one bend. Use Trane TAP to demonstrate noise target is met with FCU on medium speed.

ASHRAE A47

Diffuser, register and grille plenum boxes

Line with acoustic duct liner if room NR target is below NR40

ATKINS

Acoustic duct liner specification

Division 233113

Exhibit D2

Crosstalk attenuation

Provide where interconnecting ductwork joins private rooms together.

ASHRAE A47

Contaminated exhaust attenuation.

Fabricate attenuator from same material as the ductwork and line acoustic media with an impervious film such as melinex.

ATKINS

Duct mounted fans

Mount on anti-vibration mounts and where possible include attenuators in the sprung load. Provide ductwork flexible connections

ASHRAE A47

AHU Fans

Mount on anti-vibration mounts and provide a flexible duct connection within the AHU casing

ATKINS

Extent of resiliently mounted ductwork

To be assessed by Atkins-Acoustics on a case by case basis

ATKINS

Base mounted - Mount on inertia bases and provide flexible connections to pipework

Pumps

Pipeline mounted – Mount on antivibration mounts and provide flexible connections to pipework.

Extent of resiliently mounted pipework

5.28.

To be assessed by Atkins-Acoustics on a case by case basis

D2-Division 230548

ATKINS

Diesel Oil Systems

Diesel fuel oil is required for the electrical generations and incinerators comprising under or above ground ground bulk fuel oil storage tanks located near the serviced areas. The systems will include Daily fuel tank, fuel oil pumps, piping, control and accessories.

Parameter

Value/Description

Data Source

Fuel Type

Fuel Oil to ASTM D 975

D2 Division 231113

421-422-A000-DF-G-RPT-00020-D


47

Parameter

Value/Description

Data Source

Fuel Grade

Grade No 2-D, general purpose, high volatility

D2 Division 231113

Fuel Densit Density y

0.816-0.0876 0.816-0. 0876 g/cc at 15° 15°C C

ASTM D287

Fuel Viscosity

1.3-1.5 centisokes (mm/s) at 40°C

ASTM D613

Bulk Tank Storage

7 days at peak conditions for critical buildings 2 days at peak conditions for non critical buildings

DAR/SBG 421-422/0199

Day Tank Storage

8 hours at peak conditions

D2 Division 263213

Indoor Storage Tank Standard

UL 142 single wall

D2 Division 231113

Outdoor Storage Tank Standard

UL 142 & STI F921 double Wall

D2 Division 231113

Consumption

0.26 litres /hr/kW (Approximate value to be confirmed by manufacturer)

Manufacturer’s information (Cummings Power Generation)

Transfer Pump

Duplex Fuel Oil Transfer Pump Set

D2 Division 231113

Max pump suction

Not to exceed 34 kPa

ASHRAE Fundamentals 2009 22.19

Pipe sizing

Table 28 ‘Recommended Nominal Size for Fuel Oil Suction Lines from Tank to Pump’

ASHRAE Fundamentals 2009 22.19.

Pipework specification Outdoor

Rigid Double containment piping ASTM D 2996 or ASTM D 2997

D2 Division 231113

Pipework specification Indoor

Black Steel ASTM A 53/A 53M Schedule 40 Type E or S Grade B

D2 Division 231113

5.29.

Air-Conditioning Condensate

Air conditioning condensate will be designed using materials and physical layouts (falls, cleaning access, support, etc.) in the same manner and to the same codes as the waste pipework in Section 6 of this Basis of Design. Condensate pipework will be continuously insulated to prevent formation of condensate and nuisance dripping on and from the outside of the condensate pipes. Condensate pipe will be sized in accordance with the following table.

421-422-A000-DF-G-RPT-00020-D

KAIA Package 421 and 422 – MEP Basis of MEP Basis of Design Report ��

200

�� / 1/�"

��

10�� 10�� / �/�" �/�"

��

1�� 1�� / 1/2" 1/2"

��

�00

20�� / �/�" /�"

��

2�� / 1"

�� 1��

�2�� 2�� / 1 1/�" /�"

�00

48

�� 00 100 1000 1200 1�00

1�00

1�00

2000

2200

2�00

1� �� 100 100��

�0�� / 1 1/2" /2"

�0 �� 1��

�0�� / 2"

1�0 �� 0��

�� / 2 1/2"

�00 �� 00��

�0�� / �"

��0 �� 1,000� �

100�� / �"

��0 �� 1,�00��

1,��0 �� 2,�00��

12�� / �" �� 1% 1% �� .

Based on data provided by McQuay and validated by Atkins

5.30.

Ventilation of Hazardous Areas

5.30.1 Car Parks Refer to 5.16. 5.30.2 Battery Charging Rooms Refer to 5.18 5.30.3 Road Tunnels and Underpasses Underpasses Refer to 5.19 5.30.4 Chemical Areas All areas where hazardous chemicals are stored or used will be provided with a dedicated supply and extract 2 system that ensure a continuous background ventilation rate of 1 0 air-changes per hour or 8 l/s per m , whichever is the greater. Make up air shall be treated so that the room conditions remain within in t he limits defined in 5.6.1. Ventilation design will be developed in accordance with ASHRAE Applications A29 Additionally, local extract systems with hoods, etc will be provided to scavenge locally released gaseous emissions. Local extract systems will be developed in accordance with ASHRAE Application A30 Chemically polluted exhausts from buildings will be designed in accordance with ASHRAE Applications A44 5.30.5 Laboratories Laboratory ventilation and local extract systems (fume cupboards) will be designed in accordance with ASHRAE Applications A14 Chemically polluted exhausts from buildings will be designed in accordance with ASHRAE Applications A44 421-422-A000-DF-G-RPT-00020-D


49

All exhaust ductwork and associated fans, etc shall be fabricated from welded plastic material.

5.30.6 Liquefied Petroleum Gas (LPG) Areas Areas Storage areas will all be externally located and storage tanks will be freely ventilated and separated from each other and adjacent structures in accordance with Suadi Building Code (SBC) 801, table 36.4.3 Vapourisers, etc will be located externally and freely ventilated. External distribution equipment that requires protection from weather will be accommodated a ccommodated in lightweight ‘shelter’ structures with in accordance with NFPA 58 with i nlet and outlet vents on opposite walls at both high and low level (within 150mm of finished floor level). The vents shall be designed for general ventilation and to relieve explosion and shall comply with the requirements set out in NFPA 58. If mechanical ventilation is used in areas that accommodate LPG distribution equipment then explosion venting will be provided as NFPA 58 and the mechanical ventilation rate shall achieve a rate of at least 5 l/s 2 per m as NFPA 58. Fans and a nd associated equipment shall be hazardous hazardous classified in accordance with NFPA 70 and NFPA 497 Pipework distribution within building will be designed to comply with NFPA 58 and be located in ventilated spaces wherever possible. Where pipework is located in ceiling voids or risers or basements, it, along with it’s accessories such as valves will be double contained using a proprietary containment system. Gas detection will be provided to the void between the carrier pipe and the containment to provide early warning of a gas escape. Where LPG serves appliances such as kitchen ranges, etc, local gas detection will be provided at low level behind the appliances along with automatic isolation valves at the point of entry into the room, emergency knock offs and hard wired interface to the fire alarm system. SBC801 and NFPA 58 – LPG Gas Code will be used as the reference codes for the design of services associated with LPG areas. 5.30.7 Diesel Oil Stores Under SBC801 the grade 2-D diesel / fuel oil i s not classified as hazardous because it’s flashpoint is 52�C and exceeds 35 �C value for which special measures are required. Even with the elevated temperatures in this region the storage of this fuel is not regarded as a special hazard. There are three instances on this project where diesel oil is stored: 1. 2. 3.

In day tank of generator generator rooms – here there is ample natural and mechanical mechanical ventilation. In external external fuel tank – no ventilation ventilation measures measures required. required. In underground underground tank chambers – a background background ventilation rate equating equating to 2 air-changes air-changes per hour will be provided in these areas.

421-422-A000-DF-G-RPT-00020-D


6.

Plumbing and Drainage Systems

421-422-A000-DF-G-RPT-00020-D

50


421-422-A000-DF-G-RPT-00020-D

51


6.1.

52

General

Ref: Contract document No. J-10-421-PF-0 Exhibit D-Special specifications, Part-D1, clause 2.5.3.3 and J10-422-PF-0 Exhibit D-Special specifications, specifications, Part-D1, clause 2.5.3.3 2.5.3.3 Plumbing systems.

6.2.

Potable Water Supply

All buildings shall be supplied with potable water for its domestic water supply requirement. The water supply to the buildings shall be obtained directly from the external airport main network. Service connections will be provided with water meter, pressure reducing valve assembly and back flow prevention as required by IPC. High buildings such as the air traffic control tower wil l be provided with pressure boosting.

Parameter or Strategy

Data or Description

Source

Static pressure at inlet to each facility (at outlet of PRV)

5.0 bar(g) – minimum for PTB 4.0 bar(g) – minimum for other buildings Boosting to be provided to high circuits, if required.

ATKINS Utility team using network modelling to determine minimum pressures for several scenarios.

Design dynamic hydraulic pressure drop in internal PWS main

0.75 bar

ATKINS (using methodology in IPC Appendix E)

Maximum water velocity

2 m/s

Exhibit D

Demand assessment (sanitary fixtures)

Fixture unit method from IPC handbook (see 6.11, below)

Exhibit D

14mm/d (peak) external Water feature make up for evaporation and backwash losses

5mm/d (peak) internal 3,000mm/m2/y external

ATKINS (based on Data published by Estidama/UPC)

1,000mm/m2/y internal As required by equipment with diversity applied. Undiversified demands provided by the Kitchen and Laundry Consultant

Exhibit D

Peak temperature of potable water

42°C

ATKINS (based on ME experience and review of storage and aeration process)

Temperature of chilled potable water in the hotel and to aircraft.

20°C

ATKINS (based on ASHRAE and HSE legionella design codes)

Internal potable water pipework type and rating

CPVC

Exhibit D (Division 23)

Ablution Spray (shataf) water source

Potable water

ATKINS

Ablution Spray (shataf) location

LHS of WC when facing it and so that nozzle cannot be immersed below the water line.

ATKINS (derived from IPC and SBC)

Ablution Spray (shataf) backflow protection

Spring loaded, lever valve and located so that nozzle cannot be immersed.

ATKINS (derived from IPC and SBC)

Kitchen and Laundry demand assessment

The minimum pressures close to potable water pumping stations may be higher. If a faci lity is sited close to a station AND a higher pressure is desirable the facility plumbing designer shall contact the utility designers and agree a revised pressure on a case by case basis. This pressure shall be listed in the facility design report as an exception to this document. 421-422-A000-DF-G-RPT-00020-D


6.3.

53

Grey Water

The grey water (i.e. treated sewage effluent (TSE)) supply to the buildings shall be obtained directly from the National Water Company (NWC) Sewage Treatment plant that is located on site. Grey water shall be supplied to water closet and urinal flushing systems and irrigation systems. In the event of failure in the grey water system, potable water make up has been provided with appropriate back flow device. (source: Exhibit D). Service connection will be provided with water meter and pressure reducing valve assembly. As required by Exhibit D a cross connection between potable and grey water supplies is to be provided at building entry points. This is so that in the event of there being insufficient grey water the potable water will top up. The grey water service cross connection with the potable water will be designed in accordance with the DAR letter DAR/SBG 421-422/0243 dated 18 May 2011, Exhibit D and Saudi Building Code SBC 701 complying with the most onerous requirement for a direct connection requiring protection against over-pressure backflow. The basis of design for this cross connection is defined below. The Treated Sewage Effluent has to be chlorinated and have UV disinfection to achieve a compliance standard of <100 cfu/100ml cfu/100ml prior to its transfer to the airport. As part of our project scope, scope, additional chlorination is provided to the grey water to maintain the residual within the network (this prevents re-growth of bacteria). The potable water will also be chlorinated and so will also maintain residual chlorine. The back flow preventers are to be installed with isolation valves both upstream and downstream (V2 and V3 on schematic). These will be normally open. open. To increase security and to prevent prevent unnecessary potable potable flows to grey (which would otherwise happen whenever the potable pressure is greater that the grey water pressure), on the potable water upstream side an automatically initiated motorised butterfly valve will also installed (V1 on schematic). The back flow preventer will be installed above above ground with a type AA air gap (Plus 200mm) between the drain vent and the ground level. The exception to this will be for t he PTB where the connection will need to either be in the service tunnel or in the P TB basement. This is due to the configuration of the tunnel in this location.

421-422-A000-DF-G-RPT-00020-D


54

In the event of a grey water system failure the site SCADA/BMS will detect low pressure in the grey water network and sound an alarm. alarm. An authorised person will then decide whether whether or not to instigate potable water back up. If so, that person will push a control control button that will open open all the motorised butterfly valves (SV). In the back ground the SCADA/BMS will be monitoring the relative pressure between the grey water main and the potable water main and if there is not a sufficient differential pressure (preset and adjustable) this will prevent SV opening and an alarm will be generated. Once SV opens the potable water will flow under pressure into the grey water lateral. If the SCADA/BMS detects the grey grey water main depressurising depressurising the butterfly valve SV will close. Also if at any time the authorised person wants to close all the valves, they will be able to do this by pushing a button. When grey water pressure returns to normal SV will close and the operation will r eturn to normal. The area of the back flow preventer preventer between the two non return valves valves will drain, providing an air gap. In the heat of the day the air gap chamber will dry and heat up which will reduce any risk of the survival of any bugs that could have migrated to that area.


Data or Description

Source

Static pressure at inlet to each facility (at outlet of PRV)

4.0 bar(g) – minimum, all facilities Boosting of grey water is not required for tall buildings with low demand at high level (i.e. ATCT and WST), however, grey water will be distributed to low level outlets within reach of the pressure constraints.

ATKINS Utility team using network modelling to determine minimum pressures for several scenarios.

Design dynamic hydraulic pressure drop in the internal grey water main

0.75 bar

ATKINS (using methodology in IPC Appendix E)

Maximum water velocity

2 m/s

Exhibit D



Exhibit D

Peak temperature of grey water

45°C

ATKINS (based on ME experience and review of STP process)

Internal grey water pipework type and rating

CPVC


WC and urinal water source

Grey water (treated sewage effluent)

WC flushing method

Flush tanks (6 litre) (1) – (hotel rooms, quiet areas and single WC cubicles) Flushometer Valves (1) - (other areas)

ATKINS

Urinal flushing method

Flushometer Valves (1)

D2-Division 224000

Internal irrigation water source

Grey water (treated sewage effluent)

Exhibit D

10mm/m2/day over 2x 20 min

ATKINS –Landscape Refer to Landscape Irrigation Design Report 422-C220-DF-L-RPT-001 for further details

Internal grey water irrigation

(1) As Division 224000 224000

421-422-A000-DF-G-RPT-00020-D

Exhibit D (WCs) ATKINS (Urinals)


55

The minimum pressures close to grey water pumping stations may be higher. If a building is sited close to a station AND a higher pressure is desirable the building plumbing designer shall contact the utility designers and agree a revised pressure on a case by case basis. This pressure shall be listed in the facility design report as an exception to this document.

6.4.

Hot Water Supply

Either centralised or decentralised storage type electrical water heaters shall be utilized to supply hot water requirements in all the buildings. The system will be designed in accordance with ASHRAE A49 and the International Plumbing Code. Centralised units shall be plant room located. All kitchens shall have dedicated hot water systems.(source: Exhibit D, 2.5.3.3) Centralised systems will be used where there is a high density of outlets that require a combined storage in excess of 300 litres when calculated with a 2 hour recovery rate. Additionally, a shunt pump will be provided to circulate the hot water within the cylinder or calorifier to ensure that sections of the stored water do not continuously remain at a temperature in t he range of 20-45°C, 20-45°C, where legionella colonies could t hrive. Excessive dead legs shall be avoided and either trace heating or hot water circulation shall be adopted, as required. Outlets in areas that are accessible to the general public and all bidets shall be provided with terminal blending to avoid scalding. Hot water storage units will be insulated, direct fed and suitably rated for the maximum possible pressure, provided with pressure/temperature relief and vacuum relief all as IPC Section 504 with pressure temperature relief discharging through an air-gap. Hot water vessels shall be insulated as IPC Section 505. Hot water pipework shall be insulated in accordance with the SBC Section 601 – Energy Conservation. Ranges of faucets on counter lavatories in public restrooms are defined as being served by thermostatic blending valves in the contract documents. However, with operational issues associated with the elevated cold water temperatures and temperature lockout, this concept has been changed to the provision of hot and cold water to each faucet with a discreet mixing lever for public use.


Data or Description

Source

Make up water source

Potable cold water system

Exhibit D

Hot water storage tempera temperature ture

60°C

ASHRAE ASHRA E A49

Trace heating set-poi set-point nt

55°C

ATKINS ATKIN S

Hot water return temperat temperature ure

57°C

ATKINS ATKIN S

Minimum cold feed temperature

15°C

A TKINS ATKIN S

Hot water storage unit sizing method and recovery period

2 hours

ASHRAE A49

Method of heating water

Staged electrical resistance heaters

Exhibit D

Terminal blended water temperature

43°C

IPC AND SBC 701

Maximum water velocity in building

2 m/s

Exhibit D



Exhibit D

Kitchen and Laundry demand assessment

As required by equipment with diversity applied. Undiversified demands provided by the Kitchen and Laundry Consultant

Exhibit D

421-422-A000-DF-G-RPT-00020-D


56


Data or Description

Source

Internal hot water pipework type and rating

CPVC


Bidet water source

Potable and HWS

ATKINS

Bidet backflow protection

Air gap

ATKINS (derived from IPC)

Lavatory faucet water source

Potable and HWS

Exhibit D

Lavatory and sink faucet type

Division 224000

Exhibit D2

Countertop Lavatories Faucets in public restrooms

Automatic proximity controlled, electrical with battery back-up to provide nozzle hot and cold supply.

D2-Division 224000

6.5.

Legionnaire’s Disease Prevention

Designers shall make every measure when designing systems to ensure that the risk of harbouring and spreading legionella and pneumophila are eliminated. Guidance in ASHRAE handbooks shall be adhered to, as follows: Fundamentals: F10.6 Applications: A 48.7, A48.6, A48.7, A49.9 Systems and Engineering: S31.12/13, S40.9, Additionally and given this subject is not covered in SBC701 or the IPC, the requirements of UK Health and Safety Executive (HSE) Approved Code L8 shall apply for items not covered by the ASHRAE references listed above. Designers should note that in the Middle East it is not possible to avoid water temperatures in the range of 20 - 45°C 45°C as recommended by international codes. This is i s because of the t he very high ambient temperatures and the ground heating effect on water in buried pipelines. This risk is offset by a more stringent water treatment regime by utility companies, often involving shock dosing with chlorine and other chemicals. Given that in line with normal practice facilities will not be provided with chemical treatment the design has to be executed so that: •

Long dead legs legs where infrequently drawn water can accumulate and age are avoided; avoided;

•

Oversized pipes with very low velocities (<0.6m/s) are avoided;

•

Testing points at at remote sections of the networks are are provided provided with clear instructional signage; signage;

•

Hot water water is stored and and distributed distributed at temperatures in excess excess of 55°C;

•

Systems are designed designed and installed installed so so that that they can be completely completely drained;

•

Full instructions on on how to maintain system cleanliness are included in the Operating and Maintenance instructions

Inherent in this basis of design and the Exhibit D2 specifications are philosophies and parameters that comply with good practice with respect to legionnaires disease and they are not repeated in this section.

421-422-A000-DF-G-RPT-00020-D


6.6.

57

Sanitary and Waste Drainage

All sanitary and waste water from building plumbing fixtures shall be collected through drainage pipe work (modified single stack, to include separate vent) and discharged by gravity to manholes connected to the site sewer network. The systems will be designed in accordance with IPC Chapters 7, 8, 9 and 10. Drainage from sumps and bottom of lift shafts below external ground levels or lowest fitting to prevent surcharge shall be provided with sump pumps. Drainage from kitchens shall be connected to grease interceptors that shall have capacities as IPC Section 1003. Drainage from car parks and oily areas shall be connected to oil interceptors. Drainage from laundries shall be connected to lint interceptors. The above requirements are sourced from Exhibit D The maximum length of grease contaminated drain shall not exceed 8m before the grease is intercepted. However, longer lengths are allowed if the drain is insulated and trace heated. On large kitchens centralised grease interceptors will be favoured on environmental health grounds. (source: ATKINS) There may be a requirement for starch traps in laundry areas. This is to be investigated with the Kitchen and Laundry Consultant when the brief is finalised for these areas.

6.7.

Vacuum Plumbing Systems

Vacuum drainage systems will only be used where gravity drainage systems are not viable. Vacuum drainage systems shall be designed in accordance with BS EN 12109 (IPC not adequate) and the manufacturers’ recommendations. The systems will comprise duplex or more vacuum pumps, receiver, valves and all necessary accessories and controls. The system layout including the piping layouts, receivers, vacuum pumps and all the components shall be installed as per the manufacturers’ recommendations. The vacuum systems will collect the discharged water where it will be held in the collecting tank until it reaches a predetermined level in the tank, it will then utilise automatically forwarding pumps to discharge the wastewater into the nearest gravity drainage s ystem. The system shall be capable of receiving the wastewater from all connected appliances, transporting it to the vacuum station receiver and forwarding it to the sanitation and wastewater system. Its capacity shall be sufficient to serve the system under all conditions, low flow as well as design flow, or as specified by the system specification. The prescribed minimum vacuum level shall be maintained during normal operational conditions at every interface unit except momentarily during vacuum recovery. The system controls shall be designed, as a minimum, to maintain the system vacuum within the prescribed range and protect the equipment from flooding or running dry. The pipework shall be designed to w ithstand the expected forces, pressures and temperatures. The design shall include means of isolating lengths of vacuum drainage pipes or sub-systems to permit repair or trouble-shooting. The design shall provide for the possibility of removing one vacuum generator and, if employed, one forwarding pump for maintenance or repair, without the loss of system capacity. The vacuum station shall have stand-by power capability. 421-422-A000-DF-G-RPT-00020-D


58

The piping network should be both supported and braced. Support is necessary, to maintain the piping profile required for proper function. Bracing is necessary to resist thrusting and reaction forces occurring when slugs move within the piping. Thrusting and reaction forces occur wherever there is a change in direction within any plane of reference. Similarly, these forces can be expected to occur wherever piping intersects. Vacuum drainage piping should be supported using bi-directional braces. Expansion and contraction of pipework should be taken into consideration.

6.8.

Rain/Storm Water Drainage

All building roof drainage will be collected and piped to the storm water drainage system. No free discharges are permitted. Storm water collected by roof drainage systems shall consist of roof drains connected to vertical drain pipes to discharge rain and surface water to the site storm water utility. Rainwater drainage will include drains for flowerbeds and plantation areas. The system will be design in accordance with IPC Chapter 11 (Storm Drainage). Pipework will be designed to achieve a minimum a 0.75m/s self cleaning velocity. Oil interceptors followed by sand traps will be provided to parking and oil y areas (source: Exhibit D) These IDF curves shall be used to determine storm water flow rates:

This data is based the KAIA SE Tunnel study document produced by SOL document reference DARSBG421-422/0140 dated 05 April 2011. Roof drains will be designed using the 100-year recurrence interval rainfall using the IDF data indicated above. Roof drainage designs have to accommodate the peak 5 minute intensity of 302mm/h but flows to stormwater systems may be reduced to take account of roof and gutter retention, permeability and other flow control systems that may be introduced in to the roof drainage design. This shall be in accordance with section 1106 of the International Pl umbing code 2006.

6.9.

Decorative Pools and Fountains

Wherever required, decorative pools and fountains shall be provided with automatic filtration systems. Filtration systems shall include filter pumps, sand filters and chlorination equipments. The system will be designed in accordance with ASHRAE A 4.6 421-422-A000-DF-G-RPT-00020-D


59

Water supply for initial fill and make-up water shall be connected from the potable water distribution site utility, designed to IPC requirements complete with appropriate backflow prevention.

6.10.

Compressed Air System

The compressed air system shall be designed in accordance with ASME 31.9 for systems operating at pressure of 860 kPa (125 psig) or higher. Each compressed air system shall comprise a packaged compressed air plant having air receiver served by duplex or more air compressors complete with refrigerated type air dryer, safety devices, oil and moisture separators.


Data or Description

Source

Workshop Outlets

1.7m³/h

Special Specification (Part D1)

Laundries

Manufacturers Recommendations


Other Facilities

Manufacturers Recommendations


6.11.

Basis of Design – Sanitaryware and Fitting Load Values Assigned to Fixtures


Load Values, on Water Supply Units

Source

Lavatory Basin

1.5 cold, 1.5 hot, 2.0 total

IPC Appendix E Table E103.3(2)

Shower



Bath

3.0 cold, 3.0 hot , 4.0 total


WC Flush (Cistern)

5.0 cold


WC Flush (Valve)

10.0 cold


Kitchen Sink



Laundry/Cleaners Laundry/Cleane rs Sink



Washing Machine



Urinal

5.0 cold


Refer to IPC Appendix E Table E103.3(3) for flow rates corresponding to loading values.

6.12.

Basis of Design – Water Distribution System Design Criteria Required Capacity at Fixture Supply Pipe Outlets

Fixture Supply Outlet Serving

Flow Rate USgpm (l/s)

Flow Pressure psi (kPa)

Source

Lavatory Basin

2 (0.13)

8 (55)

IPC Table 604.3

421-422-A000-DF-G-RPT-00020-D


60

Fixture Supply Outlet Serving

Flow Rate USgpm (l/s)

Flow Pressure psi (kPa)

Source

Shower

3 (0.19)

8 (55)

IPC Table 604.3

Bath

4 (0.25)

8 (55)

IPC Table 604.3

WC Flush (Cistern)

3 (0.19)

8 (55)

IPC Table 604.3

WC Flush (Valve)

35 (2.2)

25 (172)

IPC Table 604.3


3 (0.19)

8 (55)

IPC Table 604.3

Urinal, valve

15 (0.95)

15 (103)

IPC Table 604.3

6.13.

Basis of Design – Gravity Drainage Fixture Units

Fixture Type

Drainage Fixture Unit Value as Load Factors

Source

Lavatory Basin

1

IPC Table 709.1

Shower

2

IPC Table 709.1

Bath

2

IPC Table 709.1

WC Flush (1.6 USgpm)

4

IPC Table 709.1

WC Flush (>1.6 USgpm)

6

IPC Table 709.1

Kitchen Sink

2

IPC Table 709.1


2

IPC Table 709.1

Washing Machine

3

IPC Table 709.1

Urinal

2

IPC Table 709.1

6.14.

Basis of Design – Sump Pumps

Parameter or Strategy Combined Sump pump flowrate (line pumps)

Data or Description 1 l/s per 20m2 (plant rooms) 1 l/s per 75m2 (elsewhere)

Source

ATKINS

6 l/s in tank rooms

Maximum dynamic back pressure in discharge main

30kPa one pump running

ATKINS

Minimum height of electrical control gear for flood protection

1400mm AFFL

ATKINS

421-422-A000-DF-G-RPT-00020-D


6.15.

61

Aircraft Systems - Potable and Blue Water

Comply with the requirements of Exhibit D1 – 2.5.3.6.G

Potable Water. The potable water supplied by the airport utilit y network will be fed into an interim tank with a useable volume of 30 m3. The tank is equipped with a circulation pump with UV reactor for w ater disinfection and conservation. From the potable water tank the treated water is supplied via pressure pressure booster pump system system through a pipeline network up to the pit systems on on the apron. In order to avoid avoid stagnation inside the pipe pipe network, a recirculation pipe with UV disinfection is provided. In case post-chlorination is required, required, in addition to the UV disinfection a station for for quantity-proportional dosage of a sodium hypochlorite solution is designed. The process is operated automatically. Merely in the dosing station planned for a probable chemical disinfection, in certain time intervals the dosing solution has to be prepared manually. The potable water system is controlled and visualized at the central control panel. The plant conditions for operation and alarms shall be transmitted to the I2BS. The potable water shall be chilled before it is delivered to the air crafts via an Apron mounted Pop-up.

Blue Water After vacuum sewerage evacuation, the airplane wastewater toilet tanks have to be flushed with disinfectant solution (blue water). For the subsequent use of the toilet during the flight, after each flushing - according to toilet construction and airplane type - a certain quantity of blue water is filled into the wastewater tank of the airplane toilet. The production of blue water is carried out by using a concentrate and fresh water. The concentration for the use of the blue water solution is in the range of 2 %. The blue water system consists of two chemical batching tanks which work in alternating operation. The ready for use solution is withdrawn from one tank by means of the pressure controlled delivery pumps and then pumped via the pipe network on the apron up to the t he individual pop-up pit systems. The second vessel is ready for operation or in stand by position respectively the blue water is produced in automatic operation according to the following steps: -Filling in of fresh water -Stirring unit ON -Addition of concentrate After the end of the stirring time the solution is ready for use. All work steps are controlled by monitoring time and filling level. The control of the ready to use concentration of the blue water is done by metering the conductivity. The blue water system is controlled and visualized at the central control panel. The plant conditions for operation and alarms shall be transmitted to the central building management system.

6.16.

Aircraft Systems – Vacuum Waste

The vacuum wastewater, during during evacuation of the airplane toilet tanks, is carried by means of gravity (i.e. difference of level toilet tanks in the plane up to the hose drum system in the apron pit chamber) as well as by means of the additional vacuum pressure (0.5 - 0.6 bar) in the apron pipeline system. To safeguarding the pressure in the vacuum system various metering devices shall be located on the apron as well as in the vacuum station i.e. in case of a possible pressure shortfall different safety valves open for aeration of the systems respectively due to safety criteria t he vacuum pumps are switched off.

421-422-A000-DF-G-RPT-00020-D


62

The transport of the toilet sewage is carried out from the pit chambers via a vacuum main pipeline up to the vacuum station installed inside the wet services plantroom. The vacuum station consists mainly of a vacuum wastewater tank with two discharge pumps as well as two vacuum pumps. The vacuum station is automated i.e. the switching of the discharge pumps for transporting the wastewater quantities into the local wastewater net is done via a level metering point in the vacuum tank - the vacuum pumps for the production of the necessary vacuum pressure in the system are controlled via a pressure gauge point. The strong odour exhaust air produced during this evacuation procedure is fed into an exhaust air cleaning unit. The two-step exhaust cleaning consists of a biologically active filter and a downstream activated carbon filter. The vacuum sewerage system is controlled and visualized at the central control panel. The plant conditions for operation and alarms can be transmitted to the central building management system.

6.17.

Seismic Support of Plumbing, Plant, Equipment and Systems

Refer to section 5.25 of this document.

6.18.

Irrigation

Refer to Exhibit D, 2.5.3.3 section H for the basis of design for irrigation inside buildings. Separate connection off the grey water utilities will be provided. For the systems external to buildings, refer to the landscape Irrigation Design Report 422-C220-DF-L-RPT001 and Grey Water Utilities Design Report 422-C220-DF-C-RPT-001

6.19.

Liquefied Petroleum Gas

Liquefied Petroleum Gas (LPG) will be provided to the various commercial kitchens which will be scheduled by the kitchen consultant – Humble Arnold. The systems shall be designed by a specialist gas contractor certified by Civil Defence in accordance with the requirements of NFPA 54 ‘Storage and Handling of Liquefied Petroleum Gases’ and the local Civil Defence Authority. A minimum of 2no bulk storage tanks shall be provided for 2 weeks continuous operation. Pressure regulation valve will be provided at 3no stages as follows: • • •

First stage regulation at tank manifold(s) Second stage regulation at kitchen main feeding pipe(s) Third stage regulating at equipment.

Distribution pipework external to the building will be yellow MDPE plastic . Pipework between LPG tanks and regulators/vaporisers will be welded steel w ith special corrosion protection measures. Distribution pipework within buildings wil l be seamless welded steel tubes painted yellow. Where pipes run in basements or unventilated voids a secondary containment system will be provided and a gas detection system will detect if gas has escaped from the primary carrier pipe by sensing the containment void. The system will be as made by George Fisher. For definition purposes unventilated voids will include the utility tunnels, chases, basements, ceiling voids and risers. Gas detection will be provided at low level behind all ranges with gas appliances. It will be of a type that has a perforated sensing pipe through which air is constantly circulated to ensure, that no gas pockets have built up that would not be detected by a point source detector. An automatic shut off valve will be provided to each room where gas is consumed which will close in the event of a fire alarm in the same zone, gas being detected in the room or gas being detected in the containment pipe void..

421-422-A000-DF-G-RPT-00020-D


63

An automatic shut off valve will be provided for each equipment range that will shut off in the event of a gas escape being detected at the range. Strategically placed zone valves will automatically close if a fire is detected in an area through which a gas pipe is routed or if gas has been detected in the containment void. Annunciation will be provided in a central location with means of resetting alarms and valves A fireman’s gas valve will be b e provided external the building. An earthquake shut off valve shall be provided at the point of entry to each building.


Data or Description

Source

Number of bulk storage tanks

2

Exhibit D

Storage period

2 weeks taking into account diversity and margin, but 24x7 demand.

ATKINS

Gas type

Propane

TBC

LPG storage pressure @ 55 C

19.5 bar(g)

NFPA 58

Pressure after first stage regulator (max)

140 kPa

IFGC 402.6.1

Maximum pressure drop between first stage regulator and second stage regulator

7 kPa

IFGC Table 402.4(22)

Maximum pressure after second stage regulator

34 kPa

IFGC 402.6

Maximum pressure drop between second stage regulator and third stage regulator

6.8 kPa


Pressure after third regulator

To suit appliances (nominally 2.7 kPa (11”w.g.))


Diversity factors

60% - kitchens 90% - laundries

ATKINS

Design margin

50%

ATKINS

o

6.20.

Acoustic and Vibration – Plumbing Systems

Applicable to pumps only. Refer to section 5.27.

421-422-A000-DF-G-RPT-00020-D


7.

Fire Protection

421-422-A000-DF-G-RPT-00020-D

64


421-422-A000-DF-G-RPT-00020-D

65


66

Fire Protection 7.1.

General

Ref: Contract document No. J-1X-421 and 422-PF-0 Exhibit D-Special specifications, Part-D1, clause 2.5.3.4 Fire Protection systems. Comply with applicable laws, regulations and standards regarding fire prevention as stipulated in SC-57 of Exhibit B. Obtain approval of all fire f ire protection system design documentation from the appropoaite AHJ.

7.2.

Code and Standards

The following codes and standards will be used in the design of the fire protection systems:


Publication Title

---

KAIA Fire Protection Manual (only design related sections)

NFPA 10

Standard for Portable Fire Extinguishers

NFPA 13

Standard for the Installation of Sprinkler Systems

NFPA 14

Standard for the installation of Standpipe, Private Hydrant and Hose Systems

NFPA 17

Standard for Dry Chemical Extinguishing Systems

NFPA 170

Standard for Fire Safety and Emergency Symbols

NFPA 20

Standard for the Installation of Stationary Pumps for Fire Protection

NFPA 2001

Standard on Clean Agent Fire Extinguishing Systems

NFPA 24

Standard for the Installation of Private Fire Service Mains and Their Appurtenances

NFPA 72


NFPA 780

Standard for the Installation of Lightning Protection Systems

NFPA 90A

Standard for the Installation of Air-Conditioning and Ventilating

NFPA 91

Standard for Exhaust Systems for Air Conveying of Vapors, Gases, Mists, and Non-combustible Particulate Solids

NFPA 92

Standard for Smoke Management Systems

NFPA 92A

Standard for Smoke-Control Systems Utilizing Barriers and Pressure Differences

NFPA 92B

Standard for Smoke Management Systems in Malls, Atria, and Large Spaces

NFPA 101A

Guide on Alternative Approaches to Life Safety

421-422-A000-DF-G-RPT-00020-D


NFPA 101B

Code for Means of Egress for Buildings and Structures

NFPA 110


7.3.

67

Water Supply

Fire water supply to all the buildings shall be connected to the external fire fighting distribution site wide ut ility network. The supply pipe shall be sized hydraulically to meet building fire fighting flow requirements.

7.4.

Sprinkler Systems

A fully automated sprinkler system shall be provided to all buildings according to NFPA 13 requirements. The system design shall be based on hazard classifications that are provided in the contract document CPF100-SP-F-RPT-0200 Rev B. Hazard classifications are listed in Appendix A. Sprinkler system shall be designed in accordance with Exhibit "D2" 211313 - WET-PIPE SPRINKLER SYSTEMS The minimum pressure available at each sprinkler shall be designed in such a way that the required design density is achieved or the required flow at each sprinkler is achieved based on the application of the area whichever is higher. But in any case the minimum pressure requirement stated in NFPA 13 & recommendation of the sprinkler manufacturer are met. Each sprinkler riser shall be connected with an alarm check valve & isolation valve. Each alarm check valve shall not serve a portion of floor exceeding 4831sq.m. In any case if the floor area exceeds 4831 sq. m additional alarm check valve with riser shall be provided. The zoning of the sprinkler system shall comply with the requirements of NFPA 13. Non return valves shall be installed in the breeching inlet piping to avoid back flow of water from the system. Each sprinkler riser shall be connected with a breeching inlet. Breeching inlet piping shall be connected to the downstream of the alarm check valve. The sprinkler system shall be zoned & each zone shall be provided with an isolation valve supervised electrically, flow switch (connected to the fire alarm system) test and drain valve, pressure gauge, etc to comply with NFPA 13. The outlet of the drain valve shall be connected to the nearest floor drain. Sprinkler system shall be provided to all the enclosed portion of the building except the areas where other specialised systems are used. Automatic air release valves shall be installed at the elevated level of each riser with an isolation valve and end cap. All the isolation valves shall be provided with a supervisory switch which shall be electrically supervised in the Main fire alarm panel. There shall be an individual address for each isolation valve. All controls and alarms' requirements shall be connected to the fire alarm system. BMS monitoring will be provided as described in the BMS design report.

7.5.

Standpipe and Hose Systems

Standpipe and hose systems will be provided in accordance with NFPA 14 Standard for the Installation of Standpipe, Private Hydrant and Hose Systems. Stand pipe and hose system shall be designed in accordance with Exhibit "D2" –211200 - FIRESUPPRESSION STANDPIPES 421-422-A000-DF-G-RPT-00020-D


68

A Class I/Class III standpipe system shall be provided as per NFPA 14 requirements. A Class I standpipe system shall be provided with Fire hose cabinets with approved finish shall be placed near each hose outlet which shall contain 1 no. of 65mm diameter landing valve with 65 x 40 mm diameter reducer, 4.5kg carbon dioxide type fire extinguisher and 4.5kg dry powder type fire extinguishers. A Class III standpipe system shall be provided with Fire hose cabinets with approved finish shall be placed near each hose outlet which shall contain 1 no. of 65mm diameter landing valve, 1 no. of 40mm Hose rack, 4.5kg carbon dioxide type fire extinguisher and 4. 5kg dry powder type fire extinguishers. As part of the CRS process the CM has repeatedly instructed that only Class III standpipes be deployed, therefore this will be the basis of design. Minimum pressure available at each outlet shall be 6.9 bar (100 psi) as required by NFPA 14. The installation height of the outlets shall comply with NFPA 14. Water for the wet risers shall be tapped from the main header in mechanical plant room. An approved pressure regulating device (PRV) shall be provided to limit static and residual pressures at the riser inlet t o 175 psi (12.1 bar). Fire brigade breeching inlets with check valve shall be located around the Mosque. The location of the fire brigade breeching inlet shall be in such a way that it shall be within 30.5m of fire brigade vehicular access in accordance with NFPA 14. Siamese connections are to be provided for the fi re fighting system in each buildi ng. The Fire fighting system shall be designed in such a way that the water supply from the fire brigade trucks will reach all portions of any served building. All controls’ and alarms’ requirements shall be connected to the fire alarm system BMS monitoring will be provided as defined in the BMS design report. Pressure reducing valves or other restricting devices shall be used to control the maximum pressure and maximum flow for each water outlet point.

7.6.

Portable Fire Extinguishers

Portable fire extinguishers will be provided in accordance with NFPA 10 Standards for Portable Fire Extinguishers. Extinguishers will be provided at all hazard areas such as kitchens, electrical rooms, chemical rooms, garbage rooms and generators. Extinguisher types to be provided are: • • •

Carbon Dioxide ( provide in kitchens, electrical, communication rooms) Dry Chemical ( provide in mechanical plant and garbage rooms) Foam ( provide in chemical and paint storage room)

In rooms protected by FM-200 type, ABC and CO2 fire extinguishers will be provided in accordance with NFPA requirements.

7.7.

Foam Systems.

Pre action Foam water Sprinkler System shall be provided for generator room and system shall be of Double knock type confirming to the requirements of NFPA 11, NFPA 13 & NFPA 16. Foam system shall be designed in accordance with Exhibit "D2" N 211339 - FOAM-WATER SYSTEMS Water for the foam system is drawn from the bladder type foam tank and extinguishing panel are located within the generator room. 421-422-A000-DF-G-RPT-00020-D


69

Foam concentrate shall be of 3% AFFF. Water for the foam water sprinkler system shall be drawn from the fire fighting network. Pre-action valve shall be provided with electric & pneumatic head trim assembly. Isolation valves shall be provided at downstream & upstream of the pre-action valve. Appropriate capacity Vertical mounted air compressor shall be selected for the pre-action system. Bladder type Foam tank shall be located near the pre-action valve with foam proportioner. The foam proportioner shall be suitable for proportioning 3% of foam concentrate. A foam concentrate sensing line shall be there in the foam proportioner to monitor the flow of foam concentrate & to avoid the flow of water alone into the area being protected. Downstream of the pre-action valve shall be normally filled with compressed air. Foam concentrate carrying pipe shall be of stainless steel SS 316. All fittings & valves used in foam concentrate network shall be of stainless steel SS 316 Double knock system shall be with (1) sensing of heat (bulb fuses) by the sprinkler & (2) detection of smoke / fire through detectors Bladder tank size & foam concentrate quantity shall be as referred by NFPA 11 & shall include 100% standby reserve for operation of the system. In addition to that the suitable quantity of foam concentrate shall be made available for testing & commissioning of the system All the components use for the system including but not limited to bladder tank, foam concentrate, pre action valves, isolation valves, sprinklers, foam proportioner, etc shall shall be UL listed / FM approved approved and shall be approved by local authority.

Technical particulars are defined below:


Data or Description

Source

Foam Concentration

3% AFFF

NFPA 11/16

Design Density

6.5 lpm/m .(loading bay) and 4.1 lpm/m2 ( tanks )

NFPA 11/16

Discharge Duration

10 minutes

NFPA 11/16

2

7.8.

Wet Fire Suppression System Control and Instrumentation

To comply with NFPA 13, 14, 20 and 72 including: Pressure Gauges. Gauges. A listed pressure gauge conforming to 4- 15.3.2 shall be installed in each system riser. Pressure gauges shall be installed above and below each alarm check valve where such devices are present. Waterflow Detecting Devices. Devices. The alarm apparatus for a wet pipe system shall consist of a listed alarm check valve or other listed waterflow detecting alarm device with the necessary attachments required to give an alarm. Relief Valves. Valves. A gridded wet pipe system shall be provided with a relief valve not les s than 1/4 in. (6.4 mm)

7.9.

Wet Fire Suppression System Pressure Regimes

The fire main pressure at the point of entry to the bui lding is as detailed from the fire main utilit y hydraulic model outputs in the 70% fire main utility report. 421-422-A000-DF-G-RPT-00020-D


70

The residual pressure and flow rates at discharge points are as defined in NFPA 13 and 14. Pipework will be sized hydraulically in accordance with NFPA 13 to optimise pipe sizes as far as possible.

7.10.

Dry Chemical System.

Dry chemical suppression systems shall be provided within kitchen hoods. The dry chemical fire suppression systems will be performance specified for development and certification by an AHJ approved specialist contractor in accordance with NFPA 17 and Master Format and Specification Division 212400

7.11.

Clean Agent System.

Gaseous Fire Suppression System

FM200 Gaseous fire suppression is provided for the electrical and ITC equipment rooms to comply with the requirements of NFPA 2001 FM200 Gaseous fire suppression system in accordance with Exhibit "D2" 212200 - CLEAN-AGENT FIREEXTINGUISHING SYSTEMS, except the activation sequence as explained in 2.1 C. It is difficult to ensure the air tightness (Room integrity) within the voids i. e. ceiling void, room void and raised floor. Here the design considered as total flooding and extinguishing agent shall be discharged to all zones in case of fire in any zone. The design concentration for the gas will comply with the requirements of NFPA 2001, and will comply with the requirements of the authority having jurisdiction. The discharge duration of the gas will be within 10 seconds. Design concentration for FM200 will be 7.19 %. Each system will comprise of the following primary components: • • • • • • •

• •

Gas storage bottles Distribution pipework Solenoid head Solenoid actuator Pneumatic actuator Local manual actuator Supervisory low pressure switch for each cylinder Discharge pressure switch Abort switch

• • • • • •

• • •

Auto / Manual selector switch Manual release sign Entrance warning sign Gas extinguishing panel Smoke detectors Horn Strobe Flashers Alarm Bell Main/standby selector switch

All the above equipments & system will be listed for the purpose it is used. The same will be UL listed, FM approved, NFPA compliance and approved by the authority having jurisdiction. A fire detection, actuation & alarm system will be provided for each individual gas suppression system. A minimum of 2 Nos. detectors with a combination of ionisation & optical type smoke detectors will be provided with actuation for gas release and be achieved by cross zoning of the detectors (double knock). Detector allocation is based on a maximum of 23 sq/m per detector. Heat detectors are provided in the battery room with cross zoning. There shall be a time delay of 30 seconds for the discharge of gas from the time of double knock of detectors. The following annunciations will be made available at the main alarm panel from the gas release panel: • •

Gas release panel fault Fire indication, Stage 1 & Stage 2

421-422-A000-DF-G-RPT-00020-D

KAIA Package 421 and 422 – MEP Basis of MEP Basis of Design Report • • • •

71

Gas discharge Low pressure in the gas storage cylinder AC power failure to Gas Release Panel System in Manual mode

Each room protected with a gas suppression system will be provided with a suitable Horn Strobe at each entrance of the room, controlled to activate in the event of gas discharge and to prevent personal entering the room. FM200 control panels will be located external to the rooms adjacent to the main entrance door. All ventilation system supply and/or extract ductwork to these rooms are fitted with motorized dampers to ensure air seal of the protected room in the event of gas discharge. All critical room served by gas suppression system is provided with a suitable extract ventilation system for gas clearance (purging) after discharge.

7.12.

Seismic Support of Fire Suppression, Plant, Equipment and Systems

Support, brace and provide flexible couplings for all fire suppression, plant, equipment and systems in accordance with the requirements of NFPA 13, 14 and 20. Refer also to section 5.26 of this document.

421-422-A000-DF-G-RPT-00020-D


8.

Electrical Systems

421-422-A000-DF-G-RPT-00020-D

72


421-422-A000-DF-G-RPT-00020-D

73


74

Electrical Systems 8.1.

General

This section of the BoD should be read in conjunction with contract documents No. J-10-421-PF-0 and J-10422-PF-0, Exhibit D-Special specifications, Part-D1, Section 2.6 and the associated sections in Part D2.

8.2.

Definitions, Abbreviations and Acronyms

The following definitions and acronyms and abbreviations apply to this section

Acronym /Abbreviation

Definition

SEC

Saudi Electricity Company

EMT

Electrical metallic tubing.

IMC

Intermediate metal conduit.

RMC

Rigid metal conduit.

RNC

Rigid non-metallic conduit.

GRC

Galvanized rigid steel conduit.

Trough or Ventilated Cable Tray: Ladder Cable Tray:

A fabricated structure consisting of integral or separate longitudinal rails and a bottom having openings sufficient for the passage of air and using 75 Percent or less of the plan area of the surface to support cables. A fabricated structure consisting of two longitudinal side rails connected by individual transverse members (rungs).

Basket Cable Tray:

A fabricated structure consisting of wire mesh bottom and side rails.

Transformer K-Factor

This measures the transformer's ability to withstand the heating effects of nonsinusoidal harmonic currents produced by electronic equipment.

IBC

International Building Code.

OSHPD:

Office of State-wide Health Planning and Development for the State of California

UBC

Uniform Building Code.

ICC-ES:

ICC-Evaluation Service.

8.3.

Codes and Standards - MV Supply

The following codes and standards shall be used when designing the MV cable connections to SEC Substations.

Publication Reference Saudi Arabian Distribution Code Saudi Arabian Grid code SEC standards and specifications

Publication Title The Saudi Arabian Distribution Code The Saudi Arabian Grid Code As applicable to MV cable design for connection to SEC primary substations

421-422-A000-DF-G-RPT-00020-D


8.4.

75

Basis of Design – Standards

The Electrical works shall be designed in accordance with the following codes and standards:-


Publication Title

BS 7671

Requirements for Electrical installations 17 with Amendment 1

NFPA 72


NFPA 110


NFPA 780(delete) BS EN 62305

Standard for the Installation of Lightning Protection Systems(delete) Protection against lightning Part 1: General principles

NFPA 780

Standard for the Installation of Lightning Protection Systems

NEMA

National Electrical Manufacturers Association.

ANSI

American National Standards Institute.

IEEE

Institute of Electrical and Electronics Engineers.

ATSM

American Society for Testing and Materials.

UL

Underwriters laboratories, Inc

IEE

Institute of Electrical enginee engineers rs

BSI

British Standard institution

EN

European Norm

CIE

International Commission on Illumination

IEC

International Electrotechnical commission

CIBSE

Chartered Institute of Building Services Engineers

8.5.

th

Basis of Design – Substations

Parameter

Description

Source

MV and LV cables generally

Copper conductors cables only, aluminium conductors are not acceptable. Single core cables only (specified in 2 mm CSA), Multicore cables will not be acceptable. This applies to main, sub-main and final circuit cables.

Exhibit D

MV cables

IEC 60502 15/4.16 kV Single core XLPE/ MDPE water block jacket

Exhibit D2 - Part 2

MV cables and terminations

Cable joints are to be as D2-260513 MEDIUM-VOLTAGE CABLES Part

Exhibit D2-260513

421-422-A000-DF-G-RPT-00020-D


Parameter

Description

76

Source

2.2.C and 3.3.B IEC60502 & BS6387 LV Cables

600/1000V Single core 6181 2 XLPE/LSZH Metric Cables (mm )

Exhibit D1 - 2.6.3.5

Standards: Electrical Installation generally

BS 7671 IEE 17 with Amendments 1

Exhibit D1 - 2.6.2

MV Power Supply Type

13.8 kV , 60 Hz, 3 x 1 core + E ( Earth in separate conduit)

Exhibit D2 - Part2

MV Power Factor Correction System

Automatic/manual controlled. Double star configuration at 13.8kV and in Delta configuration at 4.16kV

Exhibit D1 - 2.6.3.17

MV cable connection

Radial circuit(s) from load centre to secondary substation. Tee-off connection or Loop-in, loop-out ( whichever is more appropriate) from one MV CB to next in same secondary substation

Exhibit D

LV Power supply Type – generally

400/230 Volts, 60 Hz, TN-S 3-phase 4 wire, solidly earthed.


LV supply supply – receptacles small power

230 Volts, 60 Hz.


Substation switchgear

Integrated metal clad substation as per 2.6.3.3 – designed for 100% redundancy.


th

Electrical substation(s) in fire rated room. Electrical Substation

Outdoor unit substations

The agreed “rules of segregation’ are being used for the determination of the substation room orientation. See appendix... Outdoor unit substations maybe provided for outdoor applications only (e.g. for the Landside Roads). Designed to IEC Standards


Exhibit D1 – 2.6.3.3

30% - transformers, LV MDBs, switchboards and LV sub main cables. Spare capacity

30% spare breakers are to be provided in the distribution levels starting from Panel boards, switchboards, MCCs, MDB, etc


MV selection

2 x interlocked dual primary motorized circuit breakers (connected to normal and alternative radial feeders), outgoing tee-off circuit breaker to transformer.


LV selection

2 x transformers normally on line, feeding two separate sections of MDBs, interconnected via normally open tie CB. If one transformer fails,

Exhibit D /Atkins

421-422-A000-DF-G-RPT-00020-D


Parameter

Description

77

Source

its feeder ACB opens and the tie ACB closes. (controlled by integral PLC in LV MDB and interface to SCADA)

Transformer type

Transformer configuration in substation

Transformer ratings

Transformer K-Factor

MV Switchgear

Cast coil/encapsulated coil type, insulation insulati on class cl ass B 150° 150°C C (80° (8 0°C temperature rise). ). Indoor type, low loss, Class F winding insulation. Basic Protection provided by provision of barriers or placing out of reach. Designed to IEC 60076 Each transformer is to be connected to two separate feeders through circuit breaker to provide a normal and an alternate source. Upon failure of the normal source, the transformer is to be switched to the alternate source. Each transformer is to be fed from lines/feeders via tapping (Tsection) as per the contract requirements. including 30% spare capacity. Standard MV/LV transformer sizes to be used are 500, 1000, 1500, & 2000 kVA only, naturally ventilated. Forced cooling will not be considered unless directed by CM.

Minimum 13. K-Factor for dry type LV transformers Metal enclosed switchgear with withdrawable Arc resistant Vacuum circuit breakers type 2B Integral Interlocked Earthing Switch. Integrated Control Section Dedicated Closing battery system Top or bottom Entry cables MV surge Arrester Designed to IEEE C37. Metalclad floor standing cubicle type main switchboards, fitted with withdrawable ACBs or motorised MCCBs to IEC 60947

Exhibit D1 - 2.6.3.3 Exhibit D2 - 261200 Atkins


Exhibit D1 – 2.6.3.3 Letter DAR/SBG 421422/0477; and Exhibit D2 – 261200, 2.2/Q/3 Tender Q&A – 283 and 285 shall be in accordance with ANSI/IEEE C57.110 & UL 1561.

Exhibit D2 - 261300

Form 4b (type 6).

LV Switchgear (MDB)

Front and rear accessible. Rear connected cable chambers. Side connected cable chambers where split board is required to meet spatial constraints. Copper busbars,

421-422-A000-DF-G-RPT-00020-D

Exhibit D1 – 2.6.3.3 Exhibit D2 - 262413


Parameter

Description

78

Source

Fully sized neutral, half sized earth. Internal PLC for process control. Integral Control voltage supply and battery charger, remote batteries. Transient Voltage surge suppression units to BS6651. Ingress protection of IP31 (indoor type) Control section with dedicated field wiring terminal blocks separated from power wiring. Electronic Trip units (Harmonic measurement type) on outgoing circuit breakers 400A and above Thermo-Magnetic trip units units on outgoing circuit breakers below 400A MDBs shall contain filters as necessary to prevent any harmonics produced “down-stream” from traveling “upstream” within the IEC recommendations as per Contract requirements, Extension of structure and busbars is to be possible at either end of switchboard for form 3 and form 4 type switchboards.

LV Switchgear incomers

Diversity Factors for electrical loads

MV Surge arrestors

421-422-A000-DF-G-RPT-00020-D

Switchboards: Circuit Breaker SMDB’s: Circuit Breaker MCC: Circuit breaker Final Panelboards: MCCB (non-auto)

In accordance with BS7671 IEE wiring regulations. UPS and Life Safety Loads to be undiversified MV surge arresters are to be provided for typical MV incomers, MV cables, MV motors and MV transformers feeders.

Exhibit D2 – 262413Exhibit D2 – 262413 Exhibit D2 – 262419 Exhibit D2 – 262416

Atkins

Exhibit D2 – 261300 / 2.6/G


8.6.

79

Basis of Design – Local LV Generators

Parameter

Emergency power Supply – diesel generators

Description Provided to buildings as specified. Provided to buildings as specified. Upon failure of both A and B 13.8 kV incoming lines, the central emergency generators will start and energise the 13.8 kV feeders from the central generators. Load shedding will be provided to ensure that only essential loads are connected to the central generators. At the same time, the SCADA will open 13.8 kV CB’s for feeders to buildings with local LV generators.

Source

Exhibit D – Appendix 1

In the case of building with local LV Generators, the local LV generators will start and provide power to the essential LV services in the associated building via automatic changeover transfer switch arrangement. Fuel tanks

Bulk fuel tank type

Day Tank Type

8 hour day tank 7 day bulk tank(s); 2 days bulk tank for support facilities B Above Ground double skin or bunded single skin, where possible. Install at a height to provide gravity feed to the day tank, where possible. Below ground storage tank subject to agreement with SBG. Double skinned and built into generator skid, where possible. Otherwise single skinned and bunded.

Exhibit D and DAR response to RFI

ATKINS

ATKINS

Air intake / air exhaust

Front and back of generator room respectively. It is acceptable to use turning vanes or equivalent to turn air through 90°where louvers are not opposite each other.


Load banks

250 A receptacles, with isolator for connection of load banks. Quantity as required to allow full load testing on generator ( example 3 No. for 500 kVA generator)


Parallel operation to grid

Not required

SEC regulations (Distribution code)

Minimum size

As required by load calculations.

Essential loads connected to generator

As per list in exhibit D. The load priorities in relation to available power sources: This information will be contained within the SCADA report 421-422-C100-FD-E-RPT00001-A


Noise attenuation

85dB at 3m from generator room wall

Exhibit D

421-422-A000-DF-G-RPT-00020-D


Vibration isolation to adjacent floor slabs

8.7.

0.04 mm total amplitude through the frequency range down to 63Hz

80

ATKINS (TBA)

Basis of Design – LV Distribution.

Parameter

Description

Electrical installation generally

BS 7671 IEE 17 with Amendments 1

Exhibit D1 - 2.6.2

Underground conduits and ducts

Fully encased in CONCRETE throughout their entire length – due to high water table.

Exhibit D and Post Tender Clarifications ( Q 34)

Circuit breakers

800A and above – with-drawable ACB’s ( 3 or 4 pole type)


Meters

Multifunction meters on all main incoming feeders linked to SCADA; Analogue voltmeters, ammeters and indication lights on each incoming phase.


Emergency Central battery System

Modular design with all modules encapsulated plug-in type

Exhibit D1 - 2.6.3.8 / D2 263323

LV Cables

XLPE Single core only – specified in mm2

Exhibit D2 - Part 2

LV Final circuits

Minimum CSA; Lighting 2.5 mm2, Power 4 mm2

Letter DAR/SBG 421422/0477

LV Power factor correction.

PFC required to achieve 0.95

Exhibit D ( 2.6.3.6)

Sub-distribution board

Max number of outgoing ways shall be 14 ( SMDB’s)


Final panel boards

Totally enclosed, dead front type,IP31 for indoor, IP55 for outdoor. IEC 60529

Exhibit D2-262416

MCC’s

Source th

Metalclad free standing, sectionalized type, modular, compartmented, Form 4b (type 6) to IEC 60439, fully withdrawable. Front accessible. Copper busbars,

Exhibit D2-262419

Ingress protection of IP42 (indoor type). IP65 for outdoor / Wet areas ( eg. Pump rooms ) Voltage drop

Maximum Voltage drop shall not exceed 5% from point of supply to end circuit.

Exhibit D

Spare Capacity -30%

Generators, transformers, MDB, MCCs sub-circuit DB’s, panel boards, sub-main cables – generally throughout distribution system.

Exhibit D

Transient Voltage Surge Suppression

TVSS devices are to be provided in compliance with Section 264313

Tender - Q& A 282

421-422-A000-DF-G-RPT-00020-D


8.8.

81

Basis of Design – UPS

Parameter

Description

Source

UPS units

Required for ICT systems, s ystems, computers, life safety loads, All I2BS components. . Adequate line stabilisers/ regulators (static electronic type, complying with relevant IEC Standards) shall be provided in the by-pass connection line of the UPS units.


SAS/ICT loads

All SAS/ICT loads are dual fed via UPS


Type ( not data centre)

Three-phase, on-line, doubleconversion, static-type.


Configuration

Dual/ fully redundant and hot standst andby. (System is to be externally redundant which implies 2 complete UPS units with 2 sets of batteries operating in parallel.


Battery autonomy

60 minutes full load, 4 hours for radio sites


Maintenance bypass.

Manually operated (EMBS) to ensure removal of UPS without disturbing the UPS load.


Single point of failure elimination

Applicable to data centres and where explicitly called for in Exhibit D


Battery type

Premium Valve-Regulated, Leadcalcium Batteries

Exhibit D2 - 263353

UPS-Battery room ventilation

421-422-A000-DF-G-RPT-00020-D

In addition to the A/C system; UPSbatteries charging rooms and the like shall be provided with dedicated exhaust system by means of explosion proof fans. Make up air shall be directly supplied by means of fresh air duct to these spaces.

Exhibit D1 section 2.5.3.5


UPS scheme layout

421-422-A000-DF-G-RPT-00020-D

82


8.9

83

Basis of Design – General Power Outlets

Parameter

Description

Source

Type

British standard type 3 pin 230 volts BS 1363

Exhibit D – 2.6.3.10

Duplex outlets

Adequate number in office areas, control / operations rooms. ( Typically 1 X double outlet per workstation and similar

Exhibit D / Atkins

ICT outlets

Outlets fro ICT as shown on drawings. All unswitched. For Comms rooms rack supply, see below sketch

ICT requirement

Single outlets

Corridors, public areas and technical rooms. Spacing along corridors shall be 15m maximum between outlets.

Exhibit D

Special Purpose Transformers ( for 120 Volt outlets – example in hotel suites where travellers plugs may be required)

Dry type transformer – 400/230 volts to 208/120 Volts.

Exhibit D1 – 2.6.3.10

Special purpose outlets

Outlets for fixed equipment, workshops and special equipment where required

Exhibit D1 – 2.6.3.10

400/230volts 3 phase, phase, 4 wire: Lighting (230V); and Motors larger than 3/4hp (400V). Voltage – equipment, appliance and fittings criteria

Motors larger than 500 hp (4.16kV) 400/230 Volts 3 phase, 4 wire: Small power (230V receptacles, small appliances, incandescent lighting, and small exhaust fans).


Motors up to 3/4 HP will be single phase 230 volts unless otherwise required specifically” RCDs

Ground Fault Circuit interrupters as per BS 7671

Exhibit D1 – 2.6.3.10

RCDs Location:

Exterior, Electric Water Cooler (EWC), Break Room (counter area outlets and next to sinks), sink s), Janitors Closet, Locker Rooms, Garage, Restrooms, Kitchens (counter area outlets and next to sinks.), Water features, Elevator pits, Escalators, Moving Walks, Chair Lifts, and electric signs.

IEC / Atkins

Technical rooms

Dedicated outlets connected to UPS supply dedicated to DDC panels for connection to BMS.

Exhibit D – 2.6.3.10

Wiring

Routed in rigid steel conduits for exposed locations subject to mechanical damage.

Exhibit D

421-422-A000-DF-G-RPT-00020-D


8.9.

84

Basis of Design – Lighting Installation

Parameter

Description

Source

Lamp Type

T5 fluorescent lamps, equipped with electronic ballasts, will be used in the control rooms, offices, and other functional/technical spaces (mechanical, electrical rooms, toilets, corridors)

Exhibit D2-265100 and addendum 1

Standards

Comply with CIBSE

Exhibit D1 – 2.6.3.11

LMS

Luminaires 421-422-A000-DF-G-RPT-00020-D

A State of the Art Lighting Management System (LMS) is to be provided including lighting controls, dimming, energy saving methods and techniques and the exploitation of natural light, etc. Standard products Comply with CIBSE and BS 4533 (BS EN 60598)

Exhibit D and addendum 1

Exhibit D1 - 2.6.3.11


85

Parameter

Description

Source

External luminaires

Full cut-off type. Comply with BS 5489, CIE 115and MOT standards.

Exhibit D1 - 2.6.3.11

Lighting Levels - internal

Refer to basis of design – Lighting Levels

CIBSE

The illumination levels shall conform to BS 5489, CIE 115 and MOT MOT (Ministry of transportation) requirements for exterior areas & road ways but at a higher uniformity of 0.4 minimum

Lighting Levels -exterior areas & road ways

All General Area - 0.8 0. 8 Car Park and workshop workshop - 0.7 External Area (exposed) - 0.6

Maintenance Factor

Ceiling -70% Wall – 50% Floor - 20%

Reflectance Factor

Working Plane

Atkins

Corridor and general circulation area: at finished floor level.

Atkins

Offices etc: 750mm from finished level.

Atkins

Communication Rooms: 1000mm from finished floor level

8.10.

Atkins

Atkins

maximum 500mm from the wall/boundary

Boundary Zone

Exhibit D1 - 2.6.3.11

Exhibit D2-270400

Basis of Design – Lighting Levels

Parameter

Normal Horizontal Illuminance (lux)

Working Plane Height Metres

ECBS Horizontal Illuminance (lux)

Source

INTERNAL AREAS Ablution room

150

0

10

CIBSE

Airfield lighting vaults

300

0

100

CIBSE

Baggage handling

400

0

10

CIBSE

Break room

150

0.75

10

CIBSE

Circulation area

200

0

10

CIBSE

Detention room

300

0.75

10

CIBSE

Doctors/nurses office

500

0.75

10

CIBSE

421-422-A000-DF-G-RPT-00020-D


Parameter



86


Source

CIBSE

Fire safety & alarm rooms (?)

800

0.75

10

Goods Inwards

300

0.75

10

Interview room

300

0.75

10

Janitors room

100

0

10

CIBSE

Commercial Kitchen

750

0.75

10

CIBSE

Residential type kitchens

400

0.75

10

Locker room

100

0

10

Maintenance access areas exterior

10

0

10

Maintenance access areas interior

50

0

10

Medical centre waiting area

300

0.75

10

Meeting room

300

0.75

10

Office

500

0.75

10

Office reception

300

0.75

10

Plant room

300

0

10

Prayer room

100

0

10

Reprography

500

0.75

10

Shower room

100

0

10

CIBSE

Smoking room

100

0

10

CIBSE

Staff canteen

300

0.75

10

CIBSE

Store room

150

0.75

100

CIBSE

Toilet

200

0

10

CIBSE

Refuse Area/Room

100

0

10

CIBSE

Electrical Room

300

0.5

100

Exhibit D2-263323

Substation

300

0.5

100

Exhibit D2-263323

Comms Room

500

1.0

100

CIBSE

Control Room

500

1.0

100

CIBSE

Car Parking

75

0

10

CIBSE

EXTERNAL AREAS

421-422-A000-DF-G-RPT-00020-D

CIBSE CIBSE

CIBSE CIBSE CIBSE CIBSE CIBSE CIBSE CIBSE CIBSE CIBSE CIBSE



Parameter


87


Source

BS 5489

Car Parking

20

0

Junctions to arterial roads (1, 3, 4, 9 )

30

0

Expressway & interchange

20

0

Junctions Roads

20

0

Junctions to Arterial Roads(2)

20

0

Aircraft stands

50

0

D1-2.6.12

With

BS 5489 BS 5489

Collector

BS 5489

BS 5489

CCTV perimeter fencing

10

0

Air Force manual. TM5-811-1/AFJMAN 32-1080

Perimeter fencing

4

0

Air Force manual. TM5-811-1/AFJMAN 32-1080

STREET LIGHTING

Average Luminance over the evaluated roadway

Collector Roads

1 Cd m2

0.4

0.7

BS 5489

Arterial Road 2

1 Cd m2

0.4

0.7

BS 5489

.Arterial Roads 1,3,4 & 9

1.5 Cd m 2

0.4

0.7

BS 5489

Passenger Access Roads

1.5 Cd m 2

0.4

0.7

BS 5489

8.11.

overall uniformity over the entire roadway

longitudinal uniformity of each driving lane

Emergency Lighting Systems

Parameter

Emergency Lighting Systems (self contained)

421-422-A000-DF-G-RPT-00020-D

Description Internal Type: Self-contained, modular, batteryinverter unit, factory mounted within lighting fixture body and compatible with ballast. Battery: Sealed, maintenance-free, nickel-cadmium type.

Source

Exhibit D2 –Part D2 – 263323 - 2.2


88

Parameter

Description

Source

Emergency Lighting System (Central Battery Systems)

Central battery inverters with the following features: Output distribution section. Emergency-only circuits.

Exhibit D2 - 263323

Remote monitoring provisions. As BS EN 50171

Demarcation – CBS / Self Contained.

CBS units are generally available in ratings above 800 watts. Emergency load load < 1000 VA, use self contained system. Emergency load => 1000VA 1000VA use CBS

Atkins

Standards

Comply with DIN VDE 0108 and NFPA 101.

Exhibit D2 - 263323

Input 230 Volt single phase or 400/230 Volt 3 phase . 230 Volt DC single phase output to distribution board / load. AC output to Airfield lighting and PTB only

Configuration

Exhibit D2 - 263323

CBS -Battery autonomy

Capable of sustaining full-capacity output of inverter unit for minimum of 90 minutes.

Exhibit D2 - 263323

Battery type

Maintenance free, sealed, leak-proof lead acid, gas recombination type

Exhibit D2 – 263323 –clause 2.9

Safety Luminaires

Where hazards are encountered by the occupants of the facility; facilit y; provide minimum lighting level to 10 Lux

Exhibit D2 – 263323 – 2.11D

Exit signs

Comply with EN 60598

Exhibit D2 - 263323

Apron floodlighting system installations

Emergency Lighting (Halogen lamps)

Exhibit D1 2.6.3.12

Interface to I2BS CBS Battery Battery Room Ventilation Ventilation

8.12.

The ECBS Contractor shall provide a interface to the BMS Identical to that for UPS battery room ventilation.

Exhibit D2 - 263323 Exhibit D1 section 2.5.3.5

Road Tunnel Lighting

Parameter

Description

Traffic Design Speed

70 km/h

Exhibit D - 265600

Stopping Sight Distance

110 m

Highway Design Manual

Maintenance Factor

0.7

ATKINS

Base Lighting

Fluorescent Lighting

BS 5489

Reinforcement Lighting Entrance Zone Luminance

High Pressure Sodium (SON) 1/10 to 1/15 of Ambient Luminance

ATKINS BS 5489

421-422-A000-DF-G-RPT-00020-D

Source


Level Minimum Luminance Level on Road Night Time Illuminance Level

8.13.

89

50 Lux

BS 5489

Not more than two times of adjacent road

BS 5489

Control Voltages

The following control voltages are applicable to MEP services for this project.

Parameter

Description

Source

LV Circuit breakers / Switchgear

Control voltage shall be 120 Volts DC

Tender – Q/A 78

MV Circuit breaker / switchgear

Control voltage shall be 125 Volts DC

Tender – Q/A 78

LV switchgear accessories

Accessory Control Power Voltage: Integrally mounted, self-powered; 230-V AC

Exhibit D – part 2

8.14. Control System Power Supply (125 V DC POWER POWER SUPPLY) Parameter

Lead Calcium in sealed clear plastic or glass containers. Battery sizing calculation shall be done by the medium voltage switchgear manufacturer

Battery Type

Charger

Battery Rack Battery Rack restraints DC Power Supply Battery Room Ventilation ( Where applicable )

8.15.

Description

Static-type silicon rectifier equipped with automatic regulation and provision for manual and automatic adjustment of charging rate. Two-step rack with electrical connections between battery cells and between rows of cells Rate battery rack, cell supports, and anchorage for seismic requirements. Identical to that for UPS battery room ventilation.

Source

Exhibit D2- section 261300, clause 2.7 Also (Tender – Q/A - 78)

Exhibit D2- section 261300, clause 2.7 Exhibit D2- section 261300, clause 2.7 Exhibit D2- section 261300, clause 2.7 Exhibit D1 section 2.5.3.5

Lighting Management System (LMS)

Refer to LMS design report ATK002-421-A000-DF-E-RPT-0001 for full information.

Parameter LMS General

421-422-A000-DF-G-RPT-00020-D

Description State of the Art system

Source Tender Addendum 1


Parameter LMS Scope / extent

LMS functionality [see matrix below and lighting management system design report for full details for full details]

I2BS interface

Utilities Tunnel

421-422-A000-DF-G-RPT-00020-D

90

Description Provided in every building a BACnet, LonWorks, OPC or Modbus interface to the NIU. a) Soft, intelligent intelligent switching switching b) Vacancy detection c) Daylight linking with and without dimming d) Scene dimming e) A-V intelligent intelligent interaction f) Burn hour monitoring g) Zonal power power and energy monitoring a) Lighting relay status for each individual relay. b) Lighting load (kW) for each each zone. c) Lighting consumption (kWh) for each zone. d) Zone lighting levels e) Status (healthy/fault) of LCS components Energy Saving Switching Scheme

Source D2 255000

Industry best practice and inferred from Exhibit D

D2 255000

Exhibit D


91

Input data for the above matrix has been provided by Vision

8.16.

Raceways and Conduits

Parameter Cables in return air plenums Main and Sub-main cables (Indoor)

Description LSZH cables are to be routed on cable trays / ladderack. All Low voltage distribution and sub-distribution Cables (specified in mm2) shall be XLPE (90°C) (90°C) insulated insul ated single core copper co pper conductors fixed to cable trays / cable ladder

421-422-A000-DF-G-RPT-00020-D

Source


Interpreted from Exhibit D – 2.6.3.5


Parameter

92

Description

Source

Final Sub-circuit cables for lighting and small power

Insulated copper conductor (PVC 85 deg C) drawn in conduits/cable trays as per the specification.

Exhibit D1 -2.6.3.5

Exposed installations subject to mechanical damage.

All wiring/cables are to be routed in rigid steel conduits

Exhibit D1 – 2.6.3.10

Cable installation generally

Conceal cables in finished walls, ceilings, and floors, unless otherwise required.

Exhibit D 2 – 260519, Clause 3.3

Raceway application outdoors

Underground Conduit: Rigid heavy gauge PVC conduit concrete encased.

Exhibit D 2, 260533, Clause 3.3

Exposed, Not Subject to Physical Physical Damage: EMT .

Raceway applications – indoor

Exposed and Subject to Severe Physical Damage: IMC. Raceway locations include the following: a. Loading dock. b. Corridors used for traffic of mechanized carts, forklifts, and pallet-handling units. c. Mechanical rooms.

Exhibit D 2, 260533, Clause 3.3

Damp or Wet Locations: GRC. Raceway applications – Internal concealed wiring

Concealed in Ceilings Partitions: EMT.

Cable tray installation

Comply with recommendations in NEMA VE 2.

Cable tray type Cable tray grounding

Underground Duct type

and

Interior

Walls

and

Exhibit D2, 260533, Clause 3.3 Exhibit D2 - 260536 clause 3.1

Cable tray system design must comply with NEC Article 392, NEMA VE1. Ground cable trays according to manufacturer's written instructions. RNC; NEMA TC2, Type EPC-40-PVC rated for 90 C conductors for both in underground and above ground applications , UL 651 with matching fittings b y the same manufacturer as the conduit, complying with NEMA TC 3 and UL 514B.

Tender Q&A - 404 Exhibit D2 260536, Clause 3.3

Tender Q&A - 120

Underground Duct accessories

a) Duct Separators: Factory Fabricated rigid PVC interlocking spacers. b) Warning tape. c) Concrete Warning planks (red) 600x300x75mm.

Tender Q&A - 120

Underground conduit applications

a) Ducts for MV, LV and ELV Cables: Cables: RNC, NEMA Type EPC-40 –PVC, in concrete encased duct bank. b) Underground ducts crossing paved paths, driveways, roadways, and railroads: RNC, NEMA Type EPC-40 –PVC, encased in reinforced concrete

Tender Q&A - 120

8.17. Disturbance and Interference Parameter Lightning Protection 421-422-A000-DF-G-RPT-00020-D

Description Comply with IEC/BS EN 62305

Source Exhibit D1 – 2.6.3.13


Parameter

93

Description

Source

Surge Protection devices

Comply with IEC 61643

Exhibit D1 – 2.6.3.13

Separation from EMI Sources:

Comply with BICSI TDMM and TIA/EIA569-A recommendations.

Exhibit D2 : CONTROLVOLTAGE ELECTRICAL POWER CABLES 260523

EMI Filters (within Luminaires)

EMI – Luminaires

EMI – induced voltages

EMI-Screening

EMI – Cable screens EMI/RFI Filtering (MCC’s) EMI Emissions (UPS) Transient Frequency Performance (generators)_ Transient Voltage Performance ( generators)

Harmonic content of output waveform ( generators)

Standards ( general)

8.18.

Factory installed to suppress conducted electromagnetic interference as required by MIL-STD-461E. Fabricate lighting fixtures with one filter on each ballast as required. Ballasts for Low ElectromagneticE lectromagneticInterference Environments: Comply with 47 CFR 18, Ch. 1, Subpart C, for limitations on electromagnetic and radio-frequency interference for consumer equipment. Provide adequate grounding on all equipment to prevent the build-up of electromagnetic voltage potentials. Provide screening of panels, enclosures, devices, or components that emit interferences. All monitoring and control and Communication cables shall shall be screened with one end grounded. CE marked; certify compliance with IEC 61800-3 for Category C2. Comply with FCC Rules and Regulations and with 47 CFR 15 for Class A equipment. Less than 5 percent variation for 50 percent step-load increase or decrease. ( frequency recovery within 5 seconds) Not more than 10 percent variation for 50 percent step load increase or decrease (voltage recovery within 0.5 secs) At no load, harmonic content measured line to line or line to neutral shall not exceed 5 percent total and 3 percent for single harmonics. I2BS and all individual electrical equipment, devices and components shall comply with the requirements of the applicable UL/NEMA/IEEE/ANSI standards regarding general emissions.

Exhibit D2 - INTERIOR LIGHTING - 265100

Exhibit D

Exhibit D2 - (I2BS) 255000 Exhibit D2 - (I2BS) 255000 Exhibit D2 - (I2BS) 255000 Exhibit D2 – 262419; 2.7 Exhibit D2 – 263353; CLAUSE 2.2 Exhibit D2 - ENGINE GENERATORS - 263213 Exhibit D2 - ENGINE GENERATORS - 263213

Exhibit D2 - ENGINE GENERATORS - 263213

Exhibit D 2 (I2BS) 255000

Protection Ratings

Parameter IP –Ingress Protection Ratings – Components generally IP –Ingress Protection Ratings – Interior enclosures 421-422-A000-DF-G-RPT-00020-D

Description All components shall be IP 2X finger protected such that live components cannot be accidentally touched. Interior enclosures shall be a minimum of IP 31 unless specifically noted otherwise within Exhibit D.

Source Exhibit D2 – Division 25 – I2BS section. Exhibit D


Parameter IP –Ingress Protection Ratings – Outdoor enclosures

Fungus proofing

General (for exterior Luminaires)

8.19.

94

Description Exterior enclosures shall be weather proof IP 55 unless specifically noted otherwise within Exhibit D. Permanent fungicidal treatment for switchgear interiors, transformer coils and cores, cores, overcurrent protective devices, instruments and instrument transformers and fungus inserts for cable ties etc. Select Luminaires that do not:Fail in materials or workmanship; corrode; fade, stain, perforate, erode, or chalk due to effects of weather or solar radiation within specified warranty period.

Source

Exhibit D

Tender Q&A -225, and Exhibit D2 Division 26 generally.

Exhibit D2 – Division 26 – Exterior Luminaires – clause 1.11

Basis of Design – Seismic Restraints

Parameter Seismic Standards.

Switchboards

Typical equipment to be retrained shall include the following;

Mounting and Anchorage of Surface-Mounted Electrical Equipment and Components:

Description Comply with seismic force force based on on the 1997 Uniform Building Code zone 2A Fabricate and test switchboards according to IEEE 344 to withstand seismic forces defined in Division 26 Section "Vibration and Seismic Controls for Electrical Systems." - Battery Racks, UPS & ECB’s. - Generators. - Cable Trays. - Unit substations. - Distribution boards, Panelboards & MCCs. - Conveying systems...etc. Anchor and fasten electrical items and their supports to building structural elements by the following methods described in HANGERS AND SUPPORTS FOR ELECTRICAL SYSTEMS

Source Exhibit D1

Exhibit D

Exhibit D

Exhibit D2– 260529- clause 3.2. See also section 6.25.

.

Strength of support system

Steel Slotted Support Systems: Raceway and Cable Supports:

421-422-A000-DF-G-RPT-00020-D

Adequate in tension, shear, and pullout force to resist maximum loads with a minimum structural safety factor of five times the applied force Comply with MFMA-4, factoryfabricated components for field assembly. As described in NECA 1 and NECA 101.

Exhibit D 2 – 260529 -1.4

Exhibit D 2 – 260529 -2.1 Exhibit D 2 – 260529 -2.1


95

Parameter

Description

Source

Multiple Raceways or Cables:

Install trapeze-type supports fabricated with steel slotted or other support system, sized so capacity can be increased by at least 30 percent in future without exceeding specified design load limits Secure raceways and cables to these supports with two-bolt conduit clamps.

Exhibit D 2 – 260529 -3.1

Comply with seismic requirements defined in 6.24 and note the following Contract Document requirements. Refer also to the site-wide MEP seismic restraint report

8.20.

Identification and Labelling

Parameter

Description

Source

The following shall be provided with identification in accordance with Exhibit D2:Identification for raceways. Identification of power and control cables. Identification for conductors. Underground-line warning tape. Exhibit D2 - 260553 Warning labels and signs. Instruction signs. Equipment identification labels. Miscellaneous identification products. Colour coding for different voltage levels Comply with ANSI A13.1 for minimum size of letters for Exhibit D2 – 260553 legend, colour and requirements of Exhibit D 2 – Clause 2.2 • • •

Identification generally:

• • • • • •

Power Raceway Identification Materials Power And Control Cable Identification Materials

Equipment Identification Labels:

Locations of Underground Lines:

Warning Tape: Buried Concrete Warning planks

Comply with ANSI A13.1 for minimum size of letters for Exhibit D2 – 260553 legend, colour and and requirements of Exhibit D2 clause – Clause 2.2 2.2 On each unit of equipment, install unique designation label that is consistent with wiring diagrams, Exhibit D2 – 260553 schedules, and the Operation and Maintenance – Clause 2.2 Manual. Specific requirements as per exhibit D2 - 260553. Identify with underground-line warning tape for power, lighting, communication, and control wiring and optical fibre cable. Exhibit D2 – 260553 Use multiple tapes where width of multiple lines – Clause 2.2 installed in a common trench or concrete envelope exceeds 16 inches (400 mm) overall. Bury warning tape approximately 12 inches (300 mm) Exhibit D2 -– above all concrete-encased ducts and duct banks. 260543 – clause 3.4 Not applicable (only conduits/raceways)

421-422-A000-DF-G-RPT-00020-D

required

for

direct

buried

Exhibit D2 – 260543 60543 -3.4 -H9


8.21.

96

Mounting Heights

Parameter

Description

Source

Mounting heights generally

Comply with ADA Regulations 2010( Americans with Disabilities Act)

ADA - Refer note below)

Light switch plates – Plant / Technical areas

1200m to underside edge from finished floor level.

Specification D2

Light switch plates – Public / Office areas


ADA Regulations

Fused spur units / Disconnect switches


Specification D2

Handriers

1500 mm to centre of back box to finished floor level. Spur 300 mm from ceiling height height to centre of box.

Specification D2

General wall mounted Socket outlets / receptacles – Plant / Technical areas

Generally 300m to underside edgefrom finished floor level.

Specification D2

General wall mounted Socket outlets / receptacles – Public / Office areas

Generally 400m to underside (bottom edge of p late) from finished floor level.

ADA Regulations

Above counters / worktops

Generally 200mm above worktop or counter.

Atkins / ADA Regulations

Note 1: ADA – extract with respect to mounting heights The 2010 version of the ADA states the following: Forward Approach If access is by a forward approach and the controls can be accessed with a forward reach, the outlet or switch must be at least 15 inches above floor level. If the user does not need to reach over any obstruction or if the depth of the obstruction is no more than 20 inches, the maximum height is 48 inches above floor level. Should an obstruction have a depth of more than 20 inches but less than 25 inches, the maximum height is 44 inches above floor level. Parallel Approach A parallel approach is one that requires the occupant of the wheelchair to reach to his side to access the switch or outlet. The controls must be at least nine inches above floor level and no more than 54 inches above floor level. If the user must reach across an obstruction, which can be no more than 24 inches deep and 34 inches high, the maximum height of the control is 46 inches. Exceptions ADA guidelines provide for exceptions to the height requirements if the controls are not intended for normal use or if special equipment requires a different configuration. Outlets that do not receive regular, frequent use, such as those dedicated to wall clocks, are exempt from the guidelines. Receptacles for appliances such as refrigerators or kitchen ranges are al so exempt.

421-422-A000-DF-G-RPT-00020-D


8.22.

97

Tenanted Areas – Electrical Systems

The shell and core areas (Tenanted areas) shall be provided with the following basic services with capped connections and metering systems as applicable.

Parameter

Description

Power supply to tenanted areas

Power supply for fresh air supply and exhaust systems.

Emergency Lighting

Basic Fire detection and alarm systems

Connection / Interface to BMS

Interface to I2BS

Basis Lighting

Basic General power outlets Emergency (generator) power.

Metering facilities

8.23.

Via an appropriate local isolator based on Watt per sq metre. This should be located in the nearest location in the back of house areas. From a local distribution panel/board to be provided by the tenant, if required. Basic temporary self contained emergency luminaries to be provided within the project. This will be fed from the adjacent Landlord’s distribution board. The temporary installation will be replaced by the prospective tenant at a later date. Minimum temporary fire alarm provision to be provided. This will be replaced when the fit-out works are provided by the prospective tenant at a later date. The permanent installation should be connected to a local fire alarm interface unit in the back of house areas which links to the house system. A junction box/ terminal box with relays to provided by the tenants for connection to the BMS house system ( Details to be defined ) A junction box/ terminal box with relays to provided by the tenants for connection to i2BS house system ( Details to be defined ) Basic temporary lighting utilising batten luminaries to be provided within the project. This will be fed from the adjacent Landlord’s distribution board. The temporary installation will be replaced by the prospective tenant at a later date. By the tenants Not provided (note: only a single normal supply to be provided). Local sub meter to be provided by the tenant. It should have facility to connect to the remote BMS house system for remote monitoring

Basis of Design – Aircraft Services

421-422-A000-DF-G-RPT-00020-D

Source

Atkins

Atkins

Atkins

Atkins

Atkins

Atkins

Atkins

Atkins Atkins

Atkins


98

400Hz Supplies All aircrafts will require 400 Hz power supply during the time parked at the gates. Low voltage power supply of 60 Hz is converted to 400 Hz via solid state converters located in the technical plantroom within each node building. 400Hz power cables connect via duct and manhole system from the converter to a pop up pits buried within apron located strategically localised to the aircrafts. Rating for each converter is 90 k VA. 2 Units for a non code F Node - 4 units for code F Node)

Socket for mobile GPU: 3 phase 60Hz 125A

Passenger boarding bridges Roof top equipment:40kVA per set Retrievers: 30 kVA Aircraft stands type of aircraft

421-422-A000-DF-G-RPT-00020-D


99

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421-422-A000-DF-G-RPT-00020-D

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8.24.

100

Audio Frequency Induction loop System (AFILS)

In order to provide high quality intelligible sound for the hard of hearing, audio frequency induction loop systems (AFILS) will be provided at the locations and areas as follows: -

Area

Description

VIP Departures First Class Car Park

Counter type system capable of one to one conversations at dedicated Customs, Immigration and Security desks Counter type system capable of one to one conversations at the Parking Control Kiosks

The systems provided will comply with IEC 60118-4:2006 – Induction Loop Systems for Hearing Aid Purposes.

8.25.

Grounding and Lightning Protection

The system shall be designed and installed to provide a safe and effective earthing system in accordance th with BS 7430, IEE 17 edition including Amendments 1 and applicable local regulations and to meet with the following requirements. •

•

•

•

•

Provide sufficiently sufficiently low impedance impedance path, path, which shall ensure ensure the satisfactory operation operation of protective devices under fault conditions. Retain system voltages within reasonable limits under fault fault conditions (such as lightning, switching surges or inadvertent contact with higher voltage systems), and ensure that insulation breakdown voltages are not exceeded. Limit the voltage voltage to earth on conductive conductive materials which enclose electrical electrical conductors or equipment. Ensure the operation of the primary protective devices devices when a fault occurs occurs between the high and low voltage windings of a transformer Provide an alternative path for induced current and and thereby minimize the electrical “noise” “noise” in cables.

The overall resistance of the grounding grounding system to the mass of earth shall be less than than 5.0 ohms. Clean earths shall have an earth impedance of less than 1 ohm. The LV grounding system is comprised of earth mats / rods, riser conductors; earth terminals located in plant rooms and are interconnected using copper conductors and bonding conductors from earth terminals to all electrical equipment, metallic enclosures, steel cable containment, structural steel members and steel reinforcement of the building. Grounding system for SAS-ICT shall provide a clean earth via single point of earthing as shown on drawings. Grounding system for medium voltage power supply system is comprised of earth mats / rods and shall be separated from low voltage power supply grounding within the building structure. Any interconnection will be external to the building. The earthing design including depth, size and quantity of ground shall be based on a provisional figure of 500 Ohms.m for load / DATA centres and 200 Ohms.m for all other buildings. The actual soil resistivity test results and re-calculation will be provided by the specialist sub-contractor to determine the required number of earth rods to achieve the required resistance to earth. The MEP installation contractor shall install any required number of earth rods to achieve the required resistance to earth. 421-422-A000-DF-G-RPT-00020-D


101

The Lightning Protection system is designed to IEC/Bs EN 62305 and to meet with the following requirements. The lightning protection system can include the following: •

•

•

•

•

Roof mounted air terminals and/or metallic tape network.. External down down conductors conductors along along building column structures structures and bonding bonding connection connection to building structure reinforcement at selected points and/or steel columns bonded to metallic roof framework act as down conductors. Bonding connections connections between down down conductors conductors and building re-bars at upper upper and lower level of the building when the re-bars are used as down conductors. Lightning ground pits consisting consisting of ground electrodes and pit covers. Disconnecting facility at lower portion of the down conductor conductor or lightning protection protection ground pits themselves for necessary periodic testing of ground el ectrodes.

•

Perimeter conductor electrically linking all lightning lightning protection ground pits together.

•

Any cross bonding conductor that may be be required required by pylon pylon installation installation contractor. contractor.

The entire lightning system earth resistance shall not exceed 10 ohms. The lightning protection system (LPS) earth pits shall be distinctively identified from grounding system earth pits while maintaining a suitable clearance allowed by the code. All LPS earth pits shall be lined by a copper ground ring conductor directly buried at a minimum depth of 600mm. The metallic enclosures of mechanical equipment and steel cable containment at roof top are cross bonded to the lightning protection system to avoid side flashing during a lightning discharge.

421-422-A000-DF-G-RPT-00020-D


9.

LEED Compliance

421-422-A000-DF-G-RPT-00020-D

102


421-422-A000-DF-G-RPT-00020-D

103


104

LEED Compliance 9.1.

General

Refer to the Atkins LEED Action Plan (Ref: 421/422-A000-DF-G-RPT-0012-A) and LEED Coordination Matrix (Ref: 421/422-A000-DF-G-RPT-0013-A).

9.2.

Electrical

In particular, the electrical design shall comply with the following references: • • • •

• • • • • • • •

ASHRAE 90.1 – not not exceeding exceeding lighting power density density for internal space space lighting and light sources; LEED Manual – reductions in lighting power density density for external lighting and light sources; sources; IES/LEED Manual – limiting upwards facing light sources; LEED Manual Manual – Limit light pollution pollution from building and light spill form site boundary boundary (site Dialux model required); ASHRAE 90.1 – limit circuit voltage drop; ASHRAE 90.1 – Adequate external lighting controls; ASHRAE 90.1 – Zoning/Switching for internal lighting; ASHRAE 90.1 – Automatic lighting shut-off in buildings larger than 5000ft2; ASHRAE 90.1 – Provisions for tandem wiring of lamps; ASHRAE 90.1 – Exit signage watt/face limits; LEED Manual/IPMVP – sub metering (if pursuing pursuing this credit); credit); and Commissioning of lighting control systems.

9.3. •

•

• • • • • • • • • • • • • • • • • • • •

Mechanical

ASHRAE 90.1 – Building Building envelope minimum performance, performance, but superceded superceded by architectural architectural design design that has to equal or exceed the ASHRAE performance. LEED – the annual annual energy of the building shall shall be 17.5% 17.5% less than the benchmark building building when modelled under ASHRAE 90.1 2004 Section 11 ASHRAE 90.1 - Provision Provision of economizers where indicated in table 6.5.1 ASHRAE 90.1 90.1 – Minumum equipment efficiencies shall be be achieved achieved and certified. ASHRAE 90.1 90.1 and and LEED LEED EQc6.2 – Controllability Controllability of systems for thermal comfort. comfort. ASHRAE 90.1 – General control of systems. ASHRAE 90.1 – Ventilation controls for high occupancy areas ASHRAE 90.1 – Building services insultation. ASHRAE 90.1 – Ductwork airtightness ASHRAE 90.1 – O&M manuals ASHRAE 90.1 – System balancing ASHRAE 90.1 – Limitation of water temperature to public faucets ASHRAE 90.1 – Swimming pool heating and covers ASHRAE 90.1 – Minimum motor efficiency LEED WEc1.1 and 1.2 – water for irrigation LEED WEc2 – reduce water sed for sewage conveyance LEED WEc3.2 and 3.2 – reduce potable water used used for taps taps EAp3 and EAc4 – Fundamental and Enhanced Refrigerant Management LEED EQp1 and ASHRAE 62.1 62.1 – comply comply with minimum minimum ventilation requirements LEED EQc1 – Outdoor air monitoring LEED EQc5 - Indoor pollutant control LEED EQc7.1 – Thermal comfort design

421-422-A000-DF-G-RPT-00020-D


10. Structural, Electrical, Mechanical (SEM) Opening Requirements

421-422-A000-DF-G-RPT-00020-D

105


421-422-A000-DF-G-RPT-00020-D

106


107

SEM Opening Requirements The dimensions of these opening are minimum sizes required from an MEP standpoint. All openings will have to be accepted and designed by the structural engineers, where applicable.

10.1.

Ventilation Ductwork

Description

Width of Wall/Floor Opening (mm)

Height of Wall/Length of Floor Opening (mm)

Fire Damper (FD)

Damper Width + 25mm on left & right side

Damper Height +25mm on top & bottom side

Fire & Smoke Damper

Damper Width

Damper Height

G.I. air duct with and without insulation

Duct Width + 50 mm on left & right side

Duct Height + 50 mm on top & bottom side

Fire Rated Air Duct

Internal Air Duct Width + 150 mm on left & right side

Internal Air Duct Height + 150 mm on top & bottom side

Grille/Louver at wall

Neck size of grille/louver + 25mm on left & right side

Neck size of grille/louver + 25mm top & bottom side

10.2.

Remarks

Approved dampers are mounted on either side of wall.

Chilled Water

A pair of supply and return pipes complete with insulation

Description



Remarks

25mm dia.

350mm

200mm

Block work wall-Post drilled 200mm hole

32mm dia.

350mm

200mm

Block work wall-Post drilled 200mm hole

40mm dia.

400mm

200mm

50mm dia.

500mm

200mm

65mm dia.

600mm

250mm

80mm dia.

600mm

250mm

100mm dia.

700mm

300mm

150mm dia.

800mm

350mm

200mm dia.

900mm

400mm

250mm dia.

1100mm

500mm

300mm dia.

1250mm

550mm

350mm dia.

1450mm

650mm

400mm dia.

1450mm

650mm

421-422-A000-DF-G-RPT-00020-D


450mm dia.

1600mm

700mm

500mm dia.

1700mm

750mm

10.3.

108

Condensate

Single pipe complete with insulation

Description



25mm dia.

200mm

200mm

32mm dia.

200mm

200mm

40mm dia.

200mm

200mm

50mm dia.

200mm

200mm

10.4.

Remarks

Refrigerant

A pair of liquid and gas pipes complete with insulation

Description



All sizes.

300mm

150mm

10.5.

Remarks

Floor Drains

Floor drain, Roof drain or Vertical grating

Description



50mm Drain

200mm

200mm

80mm Drain

200mm

200mm

100mm Drain

250mm

250mm drain

150mm Drain

350mm

350mm

200mm Drain

400mm

400mm

80mm VG

250mm

250mm + (100 Depth)

100mm VG

250mm

250mm + (100 Depth)

150mm VG

350mm

350mm + (100 Depth)

200mm VG

350mm

350mm + (100 Depth)

250mm VG

350mm

350mm + (100 Depth)

421-422-A000-DF-G-RPT-00020-D

Remarks


10.6.

109

Drainage and Fire Service

Single pipe

Description


20mm dia


80mm dia sleeve opening

25mm dia.

100mm

100mm

32mm dia.

100mm

100mm

40mm dia.

100mm

100mm

50mm dia.

150mm

150mm

65mm dia.

150mm

150mm

80mm dia.

150mm

150mm

100mm dia.

200mm

200mm

150mm dia.

250mm

250mm

200mm dia

300mm

300mm

250mm dia

400mm

400mm

300mm dia

450mm

450mm

350mm dia

550mm

550mm

400mm dia

550mm

550mm

450mm dia

600mm

600mm

10.7.

Remarks

Drainage and Fire Service

Single pipe

Description


20mm dia


80mm dia sleeve opening

25mm dia.

100mm

100mm

32mm dia.

100mm

100mm

40mm dia.

100mm

100mm

50mm dia.

150mm

150mm

65mm dia.

150mm

150mm

80mm dia.

150mm

150mm

421-422-A000-DF-G-RPT-00020-D

Remarks


10.8.

110

Electrical

Description



Cable Tray

50 mm bet’ Tray & 100mm from edge

250mm per layer (MIN)

Cable Ladder

50 mm bet’ Ladder & 100mm from edge

300mm per layer (MIN)

Cable Trunking

50 mm bet’ Trunking & 100mm from edge

Trunking + 100mm (MIN)

Remarks


421-422-A000-DF-G-RPT-00020-D

111

© Atkins Ltd except where stated otherwise.

Jeddah KAIA Airport Atkins Report.pdf

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