115321977 Syabas Guidelines Draft Final 080620071

DRAFT FINAL SYABAS GUIDELINES ON PLANNING AND DESIGN FOR WATER SUPPLY SYSTEM

SYABAS GUIDELINES ON PLANNING AND DESIGN FOR WATER SUPPLY SYSTEM

3.4.2

Table of Contents

FOREWORD ABBREVIATIONS 3.4.3

1.0

2.0

3.0

b.

Pipe Laying Requirements

c.

Valves and Utilities

Reservoirs and Tanks a.

Storage Capacity

b.

Hydraulic Requirements

c.

Boundary Setback

d.

Materials and Measures

e.

Pipeworks Inside Reservoirs and Tanks

f.

Control Valves

g.

Pipe Strainers

h.

Miscellaneous

Pumping Stations

GENERAL

a.

General

1.1

Scope

b.

Pump Plinths

1.2

Definitions

1.3

Standards and Specifications

1.4

Interpretation of Guidelines

3.4.4

Geotechnical Considerations a.

Reservoir, Tank and Pumping Station Buffer Zones for Slopes

b.

Slope Stability Analysis

c.

Drainage Provisions

d.

Slope Surface Protection

e.

Reservoir, Tank and Pumping Station Foundation

PLANNING FOR WATER SUPPLY

3.6

Materials

2.1

General

3.7

Checklist

2.2

Development Proposals 2.2.1

General

2.2.2

Reservoirs and Tanks

2.2.3

Site Dimensions for Reservoirs and Tanks

4.0

INTERNAL PLUMBING SYSTEM 4.1

Plans

4.2

Technical Requirements 4.2.1

General

EXTERNAL WATER SUPPLY SYSTEM

4.2.2

Pipes and Valves

3.1

Application for Source of Water Supply

4.2.3

Water Tanks within Consumer Premises

3.2

Concept Design Submissions

a.

Capacity

3.3

Detailed Design Submissions

b.

Pipeworks and Materials

c.

Safety and Security

3.4

3.3.1

Civil Works

3.3.2

Mechanical and Electrical Works

3.3.3

Geotechnical Works

Design Guidelines 3.4.1

Water Pipes a.


SEPAKAT SETIA PERUNDING (SDN) BHD. (14142-M) Consulting Engineers

4.3

4.2.4

Pumping Systems

4.2.5

Hot Water Systems

4.2.6

Swimming Pools

Water Conservation 4.3.1

General

i


4.3.2

4.4

5.0

6.0

Water Conservation Measures

7.0

Checklist

MECHANICAL SYSTEM 7.1

General

7.2


METERING

7.2.1

First Stage (Design Stage before Tender Award)

7.2.2

Second Stage (After Tender Award during Approval Stage of Equipment)

5.1

General

7.3

Planned Water Quantity and Number of Pump Units

5.2

Locations of Meters

7.4

Pumpsets

5.3

Sizes of Meters

7.4.1

Duties and Selection

5.4

Automatic Meter Reading System (AMR)

7.4.2

Horizontal Split Casing Pumps

5.5

Meter stands

7.4.3

End Suction Pumps

7.4.4

Pump Casing, Rotating Element, Driving Coupling, Gland Sealing and Other Pump

5.5.1

General

5.5.2

Markings for Meter stands

Accessories

7.5

Pressure Gauges

7.6

Suction and Delivery Pipes

ELECTRICAL SYSTEM

7.7

Pipeworks

6.1

Standards, Code of Practice, Rules and Regulations

7.8

Valves

6.2


7.8.1

Sluice Valves

6.3

Power Supply Requirements

7.8.2

Butterfly Valves

6.4

HT Installations

7.8.3

Non-slam Type Check Valves and Surge Calculation

6.5

LV Installations

7.8.4

Altitude Valves

6.6

Essential Power Supply

6.7

Motor Starter Panels

6.8

Electric Motors

6.9

Internal Lighting and Power

6.10

External Lighting Installations

6.11

Lighting and Surge Protection Systems

6.12

Earthing Systems

6.13

Electrical Spare Parts

6.14

Electrical As-Built Fitted Drawings

6.15

Testing and Commissioning

6.16

Variable Speed Drive (VSD) Pumping System

6.17

Checklist


8.0

7.9

Surge Suppression Systems

7.10

Mechanical Handling Equipment

7.11

Mechanical Spare Parts

7.12

Variable Speed Drive (VSD) Pumping System

7.13

Checklist

SCADA/ TELEMETRY SYSTEM 8.1

General

8.2

Hardware Requirements 8.2.1

General

8.2.2

Outstations

8.2.3

Remote Terminal Units

8.2.4

GPRS/ GSM Modem

8.2.5

Video Cameras

ii


8.3

Communication Systems

8.4

Operation Requirements on SCADA System

FOREWORD

8.4.1

Introduction

8.4.2

Suction Reservoirs and Suction Tanks

Syarikat Bekalan Air Selangor Sdn. Bhd. (SYABAS) is responsible for the water supply services in the

8.4.3

Pumping stations

State of Selangor and the Federal Territories of Kuala Lumpur and Putrajaya. Qualified consulting

8.4.4


engineers, planners and architects or other agents of the Developers are required to submit their design

8.4.5 Telemetry Systems for Gravity Fed Reservoirs and Tanks

proposals for water supply works to SYABAS in order to ensure that the water supply systems meet the

8.5

Spare Parts

planning, design, operation and maintenance requirements of SYABAS.

8.6

Checklist

This document is a statement of general policies and design standards expected of new water supply works for external water supply system as well as internal plumbing system in the State of Selangor and

9.0

CAPITAL COST CONTRIBUTION (SKP) 9.1

Definitions

9.2

Charge Rates

9.3

Exemption from Capital Cost Contribution

9.4

Effective Date

the Federal Territories of Kuala Lumpur and Putrajaya. The document has been adapted and revised from the document “GARIS PANDUAN PENGEMUKAAN – Sistem Bekalan Air Di Negeri Selangor, Wilayah Persekutuan Kuala Lumpur dan Putrajaya”, which was previously published by Perbadanan Urus Air Selangor Berhad (PUAS). The standards and parameters set out in this document may be subject to revision. Nothing herein shall be construed as relieving the responsibilities of any person or entity responsible for the design, execution

10.0

SERVICE CHARGES

and completion of the works. The consulting engineers, planners and architects shall be expected to

10.1

Charges for Connection to Public Mains

exercise professional judgement and sound engineering practices in developing the design proposals.

10.2

Charges for Disconnection and Reconnection

10.3

Charges for Meter Tests

10.4

Charges for Swimming Bath Tests

10.5

Charges for Licenses to Carry Out Work

10.6

Charges for Pressure Test on Mains

10.7

Agency Fees

10.8

Charges for New Installation without Tapping or Tee-Connection

10.9

Supervision Charges for Connection

APPENDICES A

Standard Forms

B

Standard Drawings

C

Design Checklists SEPAKAT SETIA PERUNDING (SDN) BHD. (14142-M) Consulting Engineers

iii


ABBREVIATIONS NAMES ANSI ASME BOMBA BSI DCA DOE DOSH EN IEC IEEE IES ISO JKAS JKR MASMA MWA PUAS SIRIM ST SYABAS TM TNB

-

American National Standards Institute American Society of Mechanical Engineers Jabatan Bomba dan Penyelamat (Fire and Rescue Department) British Standards Institution Department of Civil Aviation Department of Environment Department of Occupancy Safety and Health of Malaysia European Committee of Standardization International Electrotechnical Commission Institute of Electrical and Electronics Engineers Illuminating Engineering Society International Organization for Standardization Jabatan Kawalselia Air Selangor Jabatan Kerja Raya Manual Saliran Mesra Alam Malaysia Malaysian Water Association Perbadanan Urus Air Selangor Berhad Standards and Industrial Research Institution of Malaysia Energy Commission (Suruhanjaya Tenaga) Syarikat Bekalan Air Selangor Sdn. Bhd. Telekom Malaysia Berhad Tenaga Nasional Berhad

Acrylonitrile Butadiene Styrene Air Circuit Breaker Automatic Meter Reading Average Recurrence Interval Automation Computer Aided Design British Standard Bottom Water Level

CD CEMEP-EU

-

CT DB Dia. DMZ

-

TERMS ABS ACB AMR ARI AutoCAD BS BWL

Compact Disc European Committee of Manufacturers of Electrical Machines and Power Electronics and European Commission Current Transformer Distribution Board Diameter District Meter Zone


DOL Elev. ELR etc FRP FS fsd G.I. GPRS GRP GSM HDPE HGL HL HSL HT HWC ID IDMT IP LED LPU LV M&E MCB MCCB MMI MS NPSH NRW O&M ODL p.a PC PE PID PKNS PLC PN (16) POB PP-R PT PTFE PVC

-

Direct On-line Elevation Earth Leakage Relay et cetera Fibre Reinforced Polyester Factor of Safety Full-scale Deflection Galvanised Iron General Packet Radio Service Glass Reinforced Plastic Global System for Mobile Communications High Density Polyethylene Hydraulic Grade Line Head Loss Highest Supply Level High Tension Hazen-William Coefficient Internal Diameter Inverse Definite Minimum Time Ingress Protection Light Emitting Diode Lightning Protection Unit Low Voltage Mechanical and Electrical Miniature Circuit breaker Moulded Case Circuit Breaker Man-Machine Interface Malaysian Standards Net Positive Suction Head Non Revenue Water Operation and Maintenance Ordnance Datum Level Per annum Personal Computer Polyethylene Proportional, Integral, Derivative Perbadanan Kemajuan Negeri Selangor Programmable Logic Controller Pressure Number of 16 bars Polyolefine Blend Polypropylene Random Copolymer Power Transformer Polyetrafluoroethylene Polyvinyl Chloride

iv


RBE RC RCD RL RTU SCADA Sdn. Bhd. SKP SMS SPT SWA SWG TEFC TWL uPVC v:h VSD WC WTP XLPE

-

Report-by-exception Reinforced Concrete Residual Current Device Reduced level Remote Terminal Unit Supervisory Control and Data Acquisition Sendirian Berhad Sumbangan Kos Pembangunan (Capital Cost Contribution Short Message Service Standard Penetration Test Steel Wire Armoured Standard Wire Gauge Totally Enclosed, Fan Cooled Top Water Level Unplasticised Polyvinyl Chloride Vertical Height : Horizontal Length Variable Speed Drive Water Closet Water Treatment Plant Crosslinked Polyethylene

UNITS % A d deg. C deg. F ft2 ha hr kA kg km kW l/d l/s lcd m m/s m3 m3/hr m3/month

-

Percent Ampere Day degree Celsius degree Fahrenheit Square Foot Hectare Hour Kilo Ampere Kilogram Kilometre Kilowatt Litre per day Litre per second Litre per capita per day Metre Metre per second Cubic Metre Cubic Metre per hour Cubic Metre per month


mg/l Ml Mld, Ml/d mm mm2 Mohm No. rpm V Var W Yr

-

Milligram per litre Million Litres Million Litres per day Millimetre Square Millimetre Mega Ohm Number Revolution per minute Volt Volt-ampere reactive Watt Year

v


1.0

GENERAL

d.

Consumer A person who is supplied with water from the pubic main or a person who is

1.1

SCOPE

otherwise liable for the payment of charges for the supply of water and includes an occupier.

These guidelines deal with the planning and design for water supply systems in the State

e.

of Selangor and the Federal Territories of Kuala Lumpur and Putrajaya. It covers external

A plumber who is registered with JKAS to implement water plumbing works.

water supply systems as well as internal plumbing systems for individual premises. It does not cover all aspects of water supplies for fire fighting.

Licensed Plumber

f.

Meter

The guidelines are prepared to provide guidance to engineers, architects, developers,

Any appliance, equipment or device used for the purpose of measuring,

contractors and licensed plumbers, and should be of interest also to water consumers.

ascertaining, regulating or estimating the amount of water consumed, supplied or used.

1.2

DEFINITIONS

g.

Meter stand The position where a meter is installed.

For the purpose of these guidelines unless the context otherwise requires, the following definitions shall apply:a.

h.

Any building, land and any tent or structure.

Approved Standard Standard or specification or code of practice issued by Standards and Industrial

i.

Research Institution of Malaysia (SIRIM) or if such is non-existent, by the British

of the owner or occupier.

standards as approved by SYABAS. Bulk Meter

j.

public main.

more sub-meters.

Consulting Engineer A professional engineer who is registered with the Board of Engineers, Malaysia and whose registration is still valid when making any submission.


Sub-meter Any meter which measures water which has already metered since leaving the

A meter measuring water all or part of which is subsequently measured by one or

c.

Plumbing system All pipes, tanks, valves and fittings from the public main to and within the premises

Standards Institution (BSI) as amended or revised from time to time, or such other

b.

Premises

k.

Water fittings Pipes (other than the public mains), taps, cocks, valves, ferrules, meters, cisterns, baths, water closets, water heaters, telemetering system and other apparatus or appliance used in connection for the supply or use of water.

1-1


1.3

STANDARDS AND SPECIFICATIONS All materials and water fittings used in the construction of any of the works described in these guidelines shall comply with the requirements specified in the latest edition of any applicable approved standard and the specification issued by SYABAS.

In case there is any discrepancy between the approved standard and specification of SYABAS the latter should take precedence.

1.4

INTERPRETATION OF GUIDELINES Every design proposal shall meet the underlying objectives of these guidelines of:•

Reliability

•

Ease of Maintenance

•

Quality of Work

•

Energy Efficient

In this guidelines, the term “shall” is used in reference to standardized design parameters or requirements where departures from which are not normally permitted.

The term “should” is used in reference to suggested design parameters or requirements and the consulting engineer is expected to exercise sound professional judgment in deciding whether to depart from the suggested parameters. The consulting engineer would be expected to justify such departures in terms of cost and improved engineering performance.


1-2


2.0

PLANNING FOR WATER SUPPLY

2.1

GENERAL

2.2.2


The water reservoir and tank sites shall be placed at:i.

The highest ground area in the proposed development.

In the planning for the water supply for any development, the following factors shall be

ii.

Level grounds and not on slopes.

considered:-

iii.

Rectangular site area.

a.

The requirement of SYABAS.

b.

The estimated daily demand and the maximum flow rate.

c.

The location of the available supply.

d.

The quantity and pressure of the available supply.

e.

The water storage capacity if required.

f.

The pumping system if required.

g.

No temporary water supply will be granted by SYABAS. SYABAS will only provide

b.

station. c.

All slopes shall be constructed within the reservoir/ tank and pumping station reserves for ease of maintenance. Fencing shall cover all slopes with sufficient setback for drainage.

d.

All land on which waterworks are built shall be surrendered to SYABAS, who will then hand over to the State Government. The land shall include access road, main

water supply for construction purposes. h.

Dedicated access (entrance/ exit) shall be provided to reservoir/ tank and pumping

infrastructure, slopes etc.

The planning and design of water supply systems shall seek to optimize available

e.

energy/ water pressure.

Should the water pressure from the connection point to the highest development area be insufficient, one or more suction reservoir/ tank and pumping station sites shall be provided whether inside or outside the proposed development area at the

2.2

expense of the developer. The pumping head shall not exceed 75 m for each

DEVELOPMENT PROPOSALS

pumping stage. 2.2.1

f.

General

The difference between the highest and lowest Finished Platform Level within the development area shall not exceed 30 m. If it exceeds 30 m, the concept of low level and high level service reservoirs/ tanks shall be considered.

Development proposals shall comply with the following requirements:a.

g.

Proposals shall be prepared and submitted by the consulting engineers/ town

The developer shall be responsible to carry out any landscaping works and architectural design if required by the local authorities.

planners. b.

Types and numbers of development units and the total development area shall be shown clearly.

2.2.3

Site Dimensions for Reservoirs and Tanks

c.

Contour lines shall be shown clearly on the plan at 5 m intervals.

d.

Key plan and location plan shall be shown on the layout plan.

For any development, the minimum site dimensions for suction reservoir/ tank and

e.

Levels shall be based on Ordnance Datum Level (ODL).

pumping station, service reservoir/ tank and the combination of the aforementioned are

f.

Coordinates and bearings of boundary shall be stated.

shown in Table 2.1, Table 2.2 and Table 2.3 respectively.


2-1


Table 2.1 : Minimum site dimensions for suction reservoir/ tank and pumping station

Water Demand (l/d)

Site Dimensions (Minimum)

≤ 45,000

20 m x 25 m

45,001 – 227,000

20 m x 25 m

227,001 – 454,000

25 m x 30 m

454,001 – 680,000

30 m x 35 m

900,001 – 1,135,000

35 m x 40 m

1,135,001 – 2,270,000

30 m x 45 m

2,270,001 – 3,405,000

45 m x 55 m

3,405,001 – 6,810,000

Site Dimensions (Minimum) Ground Reservoir/ Tank

Elevated Reservoir/ Tank

≤ 45,000

20 m x 20 m

45,001 – 227,000

20 m x 20 m

227,001 – 454,000

25 m x 25 m

454,001 – 680,000

30 m x 30 m

680,001 – 900,000

30 m x 30 m

900,001 – 1,135,000

35 m x 35 m

1,135,001 – 2,270,000

40 m x 40 m

2,270,001 – 3,405,000

45 m x 45 m

60 m x 65 m

6,810,001 – 13,620,000

Note:

Reservoir/ Tank Capacity

25 m x 30 m

680,001 – 900,000

> 13,620,000

Table 2.2 : Minimum site dimensions for service reservoir/ tank

3,405,001 – 6,810,000

60 m x 60 m

50 m x 95 m

6,810,001 – 13,620,000

75 m x 75 m

55 m x 125 m

> 13,620,000

To be approved by SYABAS but subject to a minimum of 90 m x 90 m


75 m x 80 m To be approved by SYABAS but subject to a minimum of 90 m x 95 m

Dimensions in the above table are excluding the areas of office, storeroom, toilet and quarter. Please refer Clause 3.4.3.a for details.

Note:



2-2


Table 2.3 : Minimum site dimensions for the combination of suction reservoir/ tank, pumping station and service reservoir/ tank

Note:

Water Demand (l/d)

Site Dimensions (Minimum)

≤ 45,000

25 m x 50 m

45,001 – 227,000

25 m x 60 m

227,001 – 454,000

30 m x 65 m

454,001 – 680,000

35 m x 70 m

680,001 – 900,000

35 m x 70 m

900,001 – 1,135,000

35 m x 75 m

1,135,001 – 2,270,000

40 m x 90 m

2,270,001 – 3,405,000

45 m x 100 m

3,405,001 – 6,810,000

50 m x 115 m

6,810,001 – 13,620,000

55 m x 145 m

> 13,620,000




2-3


3.0

v.

EXTERNAL WATER SUPPLY SYSTEM

Hydraulic calculations for main pipes for peak flow condition from supply source to storage reservoir/ tank, incoming main, size and level of suction reservoir/ tank,

3.1

pumping main, size and level of storage reservoir/ tank and residual pressure in the

APPLICATION FOR SOURCE OF WATER SUPPLY

pipes for the particular supply zone. a.

vi.

The owner or developer shall apply to SYABAS through their consulting engineer together

and pipe data. Flow and pressure readings for nodes and pipes shall be indicated.

with the following:i.

General brief and schematic plan of the overall water supply system showing nodal

Appointment letter to the consulting engineer from the owner or developer, and the

c.

All plans/ drawings submitted shall be of A1 size.

consulting engineer’s registration letter with the BEM. ii.

Calculation of water demand according to SYABAS requirements as shown in Table 3.1.

iii.

Approval letter and plans from the local authority.

iv.

Three (3) sets of Key Plan and Location Plan.

v.

Three (3) sets of Site Plan, with a minimum scale of 1:500 showing the

vi. vii. b. c.

3.3

DETAILED DESIGN SUBMISSIONS a.

The detailed design shall be in accordance with the requirements of the development phases.

existing and proposed layout of reticulation mains, lot numbers, adjacent lot

b.

A copy of SYABAS Standard Specifications shall be included.

nos., house numbers and landmarks.

c.

Two (2) sets of Detailed Design Report shall be submitted by the consulting engineer.

Three (3) sets of Layout Plan complete with contour lines and proposed land

d.

Three (3) set of drawings of A1 size shall be submitted for approval.

development levels (in metre ODL).

e.

The submission shall be accompanied with one (1) no. CD containing the soft copy of all


drawings relating to the water supply system, in AutoCAD format and the calculation data. There shall cover the following:-

Application with water demand of more than 50,000 litres per day shall be made directly to the Development Department, SYABAS Headquarters.

i.

Reticulation system layout plan.

Application with water demand of less than 50,000 litres per day shall be made directly to

ii.

Symbols used shall be those as shown in the SYABAS’ Standard Drawings

the respective SYABAS District Office.

3.2

attached.

CONCEPT DESIGN SUBMISSIONS a.

For development with water demands exceeding 4.5 million litres per day and to be developed in phases or where pumping station is required, the Concept Design Report for the entire development shall be submitted to SYABAS.

b.

Two (2) sets of Concept Design Report shall consist of the following:i.

General description about the project.

ii.

Water demand table according to the type of development for the entire project.

iii.

Water demand computation table according to phase and type of development

f.

iii.

Reservoir/ tank and pumping station layout plan.

iv.

Details of reservoir/ tank and pumping station.

v.

Plan and profile of incoming main pipe.

vi.

Standard drawings.

vii.

Hydraulic calculation data for reticulation system.

Drawings, calculations and works specifications shall be endorsed by a consulting engineer appointed by the owner or developer.

including the years for each development phases. iv.

Supply zones for the development phases from service reservoirs/ tanks.


3-4


3.3.1

Civil Works

Pipe Details

Each design proposal shall consist of the following:-

Pipe No.

a.

Brief description for that particular phase.

b.

Water demand table showing the types of development, calculations of reticulation pipe

To Node

Length (m)

Dia. (mm)

HWC

HL (m)

HL/1000

Velocity (m/s)

Node Details

design for the cases of peak flow, fire flow and average flow, calculations for levels and

Node No.

size of reservoir/ tank and pumping system calculations. c.

From Node

Flow (l/s)

Elev (m.ODL)

HGL (m.ODL)

HSL (m.ODL)

Residual Pressure (m)

Detailed calculations showing that the pipes are able to withstand the expected design traffic load with a minimum of 1.0 m depth of cover, well compacted with suitable backfill materials.

d.

Calculation and sizing of scour pipe for the reservoir/ tank.

e.

Storm drainage system design calculation.

f.

Detailed layout plan showing the main reticulation pipe system, that are coloured

Where:HWC = Hazen William Coefficient HL

HGL = Hydraulic Grade Line

according to:-

g.

i.

Types and sizes of pipes.

ii.

Location, type, size and BWL/ TWL for reservoir/ tank.

iii.

Pumping station, including drainage.

HSL = Highest Supply Level

3.3.2

Detailed layout plan of reservoir/ tank showing location, side views, top and sectional

Mechanical and Electrical Works The submission of detailed design and installation for mechanical and electrical works shall be as

views, details of levels, incoming water pipe, outgoing water pipe, overflow and scour

per Clause 7.2 and 6.2 respectively. It shall be submitted to SYABAS within four (4) weeks from

pipes, valves locations, level indicator, ventilation system and ladders for reservoirs/ tank

the approval date of the detailed design of the civil works. The mechanical and electrical system

and security fencing. h.

= Head Loss

design considerations shall be as required in Chapters 6.0 and 7.0. The design and calculation

Floor plan, side and sectional views of pumping station showing the pump locations,

report shall be prepared and endorsed by consulting engineer. Approval from SYABAS shall be

arrangement of pumping system including suction pipe from suction reservoir/ tank to

obtained before any work may commence at site.

pumps, pumping mains, pipe fittings, pipe trenches, motor, switchboard surge suppression system and details of levels. i.

Detailed drawing showing the supports, foundation arrangements with base plate dimensions and the positions of all foundation bolts and pipe connection, chequered plate and all necessary information for the complete design.

j.

Structural design including the design calculations and design criteria for pumping station and reservoir/ tank endorsed by a consulting civil engineer.

k.

The hydraulic calculations for reticulation system shall include the following information:-


3.3.3

Geotechnical Works Each design proposal shall consist of the following:a.

Soil Investigation Report

b.

Geotechnical Interpretation Report

c.

Geotechnical Design Report which shall include the following:i.

Subsoil conditions of the project site.

ii.

Design soil parameters.

3-5


iii.

Selection of foundation type.

to development where the source of water is drawn directly from SYABAS

iv.

Design calculations for foundation of reservoir/ tank and pumping station

main.

including calculations for long term settlement and short term settlement. v.

•

Each node shall have a minimum residual pressure not less than 4.5 m above the highest supply level during peak flow condition. This is applicable

Detailed drawings for foundation of reservoir/ tank and pumping station.

to development where the source of water is drawn from the developer’s d.

When slopes are encountered adjacent to the reservoir/ tank or pumping station, the

storage reservoir/ tank with the hydraulic calculations based on the BWL.

followings shall be included in the Geotechnical Design Report:i.

•

above the platform level, for combined average flow and fire flow condition.

Detailed drawings for earthwork which shall show the cross sections of critical slopes and cut/ fill sections within the reservoir/ tank or pumping

•

Each node shall have a maximum residual pressure not exceeding 30 m for

station reserve and including areas 100 m beyond the site boundary.

the two flow conditions analysed. Pressure Reducing Valve shall be

ii.

Selection of slope surface protection and erosion control.

provided where the residual pressure exceeds 30 m.

iii.

Slope stability analysis except for slopes that fall under Clause 3.4.4.b.vii.

iv.

Selection of slope stabilization method, if relevant, and detailed drawings and

vi.

Fire flow requirement, location and type of hydrants shall be recommended by BOMBA.

design calculations of all slope stabilization measures. vii. e.

Each node shall have a minimum residual pressure not less than 7.5 m

Geotechnical design considerations as required in Clause 3.4.4.

Reticulation pipe size shall be subject to the hydraulic design for peak flow requirements and for pipe system with hydrant, the pipe size shall be determined by the hydraulic requirements and minimum pressure required for fire fighting and average flow condition. For pipes with hydrant, a

3.4

DESIGN GUIDELINES

minimum pipe size of 100 mm diameter shall be applied except the last 91 m before pipe end. Hydrant shall be installed at least 91 m before any pipe end.

3.4.1

Water Pipes a.

Hydraulic Requirements i.

The reticulation system shall be designed as per the following flow

b.

Pipe Laying Requirements i.

conditions:•

Peak flow

•

Combination of average and fire flow

•

Summary of both flow conditions above

All pipes shall be laid at locations which are easy for maintenance works and the cost of repair and rehabilitation works shall be considered.

ii.

Twin pipes shall be installed on both sides of road shoulder should there be more than ten (10) units of houses/ shops in a row for that particular road. The main pipe shall be subject to the hydraulic and fire fighting requirements.

iii.

The types of pipes used shall comply with Table 3.3 and 3.4.

ii.

Hazen-William Coefficient C shall be as per Table 3.2.

iv.

Pipe dead ends shall be installed with isolating valve or hydrant.

iii.

Head loss gradient shall be less than 2/1000 during peak flow condition.

v.

The pipes shall be buried in sufficient depth, well compacted with suitable

iv.

Peak factor of average flow for incoming flow to reservoir and reticulation system

backfill materials and able to withstand the expected design traffic load

shall be 1.2 and 2.5 respectively.

according to the standard pipe bedding details in the attached SYABAS

The following residual pressures shall be achieved:-

Standard Drawings.

v.

•

Each node shall have a minimum residual pressure not less than 7.5 m above the highest supply level during peak flow condition. This is applicable


vi.

Under all circumstances, water pipes shall be laid above sewers with a minimum vertical clearance of 1 m.

3-6


vii.

Hydrant pipeline shall be installed separately from the domestic pipeline in any

•

For pipe size 600 mm - 800 mm dia.

- 100 mm double orifice type

area with apartment/ condominium, factory, complex, office, commercial complex,

with double flanged isolating

institution and school, where the water demand does not exceed 2.0 million litres

valve

per day except for low-cost flats built by the Government. Water meter shall

•

For pipe size 850 mm - 1200mm dia.

be provided for both of the hydrant and domestic pipelines.

- 150 mm double orifice type with flange ended isolating valve

•

For pipe size 1300 mm dia. and above - 200 mm double orifice type with flange ended isolating

c.

valve

Valves and Utilities i.

All valves shall comply with prevailing SYABAS requirements.

ii.

All isolating/ regulating and scour valves shall be of flange ended sluice type for pipe diameter up to 400 mm and of flange ended butterfly type for pipe diameter

viii.

Sampling box with pressure gauge shall be provided as per Table 3.5.

ix.

Water usage for a NRW zone shall be limited to 1,000,000 litres per day.

x.

District Meter Zone (DMZ) chamber shall be provided as per Table 3.6 within each hydraulic zone.

450 mm and above. The in-line valves shall be installed at a maximum of xi.

every 2000 m interval of incoming main. iii.

tank of condominium, apartment and office to limit the flow rate at 20 hours per day

The size of isolating valve shall be at least the size of the pipeline. However

whenever the residual head at the inlet of the reservoir/ tank exceed 15 m.

for pipe diameter of 900 mm and above, the isolating valve can be one size

The developer shall submit the characteristic curve/ chart of the constant

smaller than the pipe size. iv.

Constant flow valve shall be installed on the incoming pipe to the suction reservoir/

flow valve to SYABAS for approval.

Scour locations and sizes shall be designed such that the pipelines can be scoured within three (3) hours.

v.

Full bore scour point shall be provided not greater than 5 km apart at low points near river/ big drain. A self cleansing velocity of greater than 0.6 m/s shall be achieved.

vi.

3.4.2


•


-

100mm flange ended

i.

The storage capacity requirements for reservoirs/ tanks shall be as per Table 3.7

•


-

150mm flange ended

ii.

The preferable volumetric ratio of suction reservoir/ tank : elevated storage

•


-

200mm flange ended

reservoir/ tank shall be 1:2. However, a proportion between 1:1 and 1:2 may be

•


-

250mm flange ended

considered.

•


-

300mm flange ended

•

For pipe size 1300 mm dia. and above

-

450mm flange ended b.

vii.

Storage Capacity

Scour valve sizes shall be as follows:-


Air valve sizes shall be as follows:•


- 50 mm double orifice type

•


- 80 mm double orifice type with flange ended isolating valve

i.

For hilly development, the concept of high, medium and low hydraulic zone shall be adopted where viable.

ii.

Design of reticulation system supplied from reservoir/ tank shall be based on the reservoir’s BWL and the minimum residual pressure shall be 4.5 m above HSL.

iii.


The following residual pressure requirements shall be satisfied:-

3-7


•

Minimum residual pressure at reservoir/ tank’s TWL shall not be less than

e.

Pipeworks Inside Reservoirs and Tanks

4.5 m, where the connection source of incoming main has no connection to i.

any other reticulation main. •

suitable anti-corrosion paint system or other materials as approved by SYABAS.

Minimum residual pressure at reservoir/ tank’s TWL shall not be less than ii.

7.5 m where the incoming main has direct connection to reticulation pipe. •

All pipes in reservoir/ tank shall be of stainless steel, ductile iron painted with All vertical pipes shall be anchored and supported with stainless steel brackets, steel bolt and nut bolted into the wall of the reservoir.

Maximum residual pressures above HSL at any case shall not exceed iii.

15 m for gravity fed reservoirs/ tanks and 5 m for pumping fed

Overflow pipes shall be at least one size larger than the inlet pipe diameter and not smaller than the outlet pipe diameter.

reservoirs/ tanks. iv.

The scour pipe shall be designed to empty the full capacity of reservoir within six (6) hours.

c.

v.

Boundary Setback

For gravity flow, the inlet pipe at the reservoir/ tank shall be of side or bottom inlet while for pumping supply, the inlet pipe shall be of top-inlet (bellmouth).

Setback from the edge of structural foundation shall be flat all-round with at least 6.0

The outlet pipe shall be of side or bottom outlet.

m for ground reservoir/ tank and pumping station structures and 9.0 m for elevated reservoir/ tank structure. Minimum distance between two (2) structures shall be 3.0 m. f.

d.

Materials and Measures

Control Valves i.

All incoming mains to the suction reservoir/ tank and gravity flow to the service reservoir/ tank shall be controlled by a mechanical control valve

i.

Reinforced concrete reservoir is preferred and suction reservoir/ tank shall be reinforced concrete. However, storage reservoir/ tank of other material

while the incoming pumping main shall be electrodes controlled. ii.

may be used, subject to the approval by SYABAS. ii.

diameter. An additional inspection manhole with a suitable size for

Storage reservoir/ tank with a capacity of more than 454,000 litres shall be of

maintenance purposes shall be constructed directly on it. Inspection

reinforced concrete. iii.

manhole shall be fitted with safety railing and covered with stainless steel

The usage of storage reservoir/ tank with a capacity of less than 454,000 litres built with other materials as approved by SYABAS are allowed until

chequered plate. iii.

year 2010. After year 2010, all the storage reservoir/ tank shall be of

chamber shall be used. Butterfly valves shall be used for isolation and by-

Reinforced concrete elevated storage reservoir/ tank shall not exceed the capacity of 4.5 million litres. Capacity of elevated storage reservoir/ tank of other materials

pass purposes. iv.

shall be subject to the approval of SYABAS. v.

The effective water depth for RC reservoir/ tank shall be not more than 5 m

For incoming main of size above 300 mm, a one way flow full bore altitude valve complete with T-pot strainer and by-pass installed in one common

reinforced concrete. iv.

Inlet control valve shall be of ball float valve type for mains size up to 300 mm

The altitude valve shall be of diaphragm or piston type for sizes of less than 450 mm diameter and of piston type for sizes of 450 mm diameter and above.

v.

for capacity of less than 4,540,000 litres and 7 m for capacity of 4,540,000

The control valves shall be fitted with sluice valves/ butterfly valves for isolation and maintenance purposes.

litres and above. The water depth for non RC reservoir/ tank shall not be

vi.

All by-pass pipes shall be of the same size of the incoming pipe.

more than 5 m.

vii.

All valve chambers shall be well drained or with dewatering system installed.


3-8


g.

Pipe Strainers i.

All incoming mains to the suction reservoirs/ tanks and gravity flow to the

3.4.3

Pumping Stations a.

General

service reservoirs/ tanks shall be fitted with pipe strainers. ii.

A pipe strainer shall be fitted after the sluice valve and installed together in a

i.

common valve chamber. The size of the valve chamber shall be constructed to suit the fittings of the sluice valve and pipe strainer. iii.

Platform levels of pumping stations and suction reservoirs/ tanks shall be designed above 100 years ARI flood level.

ii.

Pumping station shall be of reinforced concrete and bricks with reinforced concrete roof or roof tiles. Roof tiles can only be used for pumping station where the

The strainer shall be of 10 ~ 15 mesh stainless steel screen (net).

pumping capacity does not exceed 100 m3/hr. If roof truss is to be used, the truss shall be of steel type. h.

Miscellaneous i.

iii.

All pumping stations shall be equipped with toilet and sewerage system.

iv.

Pumping station with pumping capacity exceeding 50 m3/hr shall have office/ store

External stairs of reservoir/ tank shall be of reinforced concrete and shall be fenced. All stairs shall have brickwall enclosure complete with mild steel doors.

ii.

iii.

room. v.

Pumping station with pumping capacity exceeding 10 Mld shall be equipped with

Stairs inside the reservoir/ tank shall be of reinforced concrete or stainless steel

two (2) unit quarters with three (3) bedrooms. Floor area of each quarter shall

(SS304). All stairs shall be fixed with safety railing.

not be less than 65 m2.

Two (2) nos. or more ladders shall be provided for reservoir/ tank with a

vi.

Security grilles shall be provided on the inside of the pumping station window.

capacity of more than 9.1 million litres.

vii.

Heavy duty floor tiling shall be provided.

All reservoirs/ tanks shall be fitted with ‘Dial’ type level indicators. The size of

viii.

Ceramic wall tiling shall be provided up to 1.5 m height.

level indicator for ground reservoir/ tank and elevated reservoir/ tank shall

ix.

All windows shall be of steel-casement type.

not be less than 600 mm diameter and 900 mm diameter respectively. Only

x.

All suction, discharge pipes and fittings shall conform to Table 3.3. All pipes shall be laid in trenches and well anchored.

stainless steel cable (tangle-free design) shall be allowed. xi.

iv.

Perspex glass covers shall be provided on the roof of reservoir/ tank.

v.

All valve chambers shall protrude above the ground level not more than 300

space on each side of the pipe. All trenches shall be well drained and

mm.

covered with hot dipped galvanised grating or chequered plate. Trenches

vi.

Site drains and overflow drains shall be designed as per Table 3.8.

built below the drain level shall be provided with pump sump complete with

vii.

Security fence for reservoir/ tank and pumping station area shall be built as

isolator point and earth leakage relay or RCD.

viii.

The minimum width of trenches shall be the size of pipe laid plus 300 mm

per SYABAS Standard Drawings attached, and the reserve’s boundary shall

xii.

All exposed pipes and fittings shall be painted as per SYABAS requirements.

be marked with boundary stones at 6 m interval.

xiii.

Main switchboard shall be compartmentalized and located away from water

All level ground within the reservoir/ tank and pumping station compound

pipes. Minimum clear distance between the main switchboard to the wall

shall be premixed as per Table 3.9.

shall be 1.5 m.

ix.

Reservoirs/ tanks shall be painted as per SYABAS Specifications.

x.

Top water level, bottom water level and capacity of the reservoir/ tank shall be printed on the reservoir/ tank’s wall.

xiv.

Minimum clear distance between two (2) pump sets shall not be less than 1.0 m.

xv.

All pumping stations shall be provided with fire extinguishers, first aid kits and safety procedures.

xvi.

The pumping station shall be painted and marked as per SYABAS Specifications.


3-9


b.

Pump Plinths i.

3.4.4

Pumpset shall be rigidly fixed in position on its foundation and shall be free from

Geotechnical Considerations a.

Reservoir, Tank and Pumping Station Buffer Zones for Slopes

vibrations. The design of the foundation shall comply with the following criteria:•

The pumpset foundation shall be sufficiently strong for its load.

•

It shall be sufficiently strong and heavy for suppressing any vibrations.

i.

The setbacks or the distance from the toe or the crest of respective adjacent slopes to the edge of reservoir/ tank and pumping station structures shall not be less than 9 m.

ii.

ii.

A good practice is to fix the pumpsets on concrete block, in reasonably good firm

retaining structures, retention ponds, etc shall not be less 5 m.

ground. The following standard depths for pumps with various powers shall be iii.

followed:-

iii.

•

7.5 - 15.0 kW

- 200 mm to 250 mm

•

15.0 - 40.0 kW

- 250 mm to 450 mm

•

40.0 - 55.0 kW

- 450 mm to 600 mm

•

55.0 - 75.0 kW

- 600 mm to 750 mm

•

75.0 - 100.0 kW - 750 mm to 1000 mm

Berms shall be formed on slopes at every 5 m vertical interval. For rock cut in sound and strong rock such as grade I or II granite (BS 5930:1999 - Code of Practice for Site Investigations), the berm interval may be increased to 9 m. The minimum berm width is 1.8 m.

iv.

The reservoir/ tank and pumping station buffer zones for slopes are shown in Figure 3.1.

In practice, for pumps with powers above 75.0 kW, foundation plinths shall be specially designed based on the following standards:•

For electric motor driven pumps, the weight of an independent foundation shall be at least three times more than the machine kerb weight of the

b.

Slope Stability Analysis i.

•

When anti-vibration material such as rubber, spring etc; is used between the common base plate for pump and the prime mover, and the foundation,

conditions and potential external loadings shall be considered. ii.

Where any pipe of the pumping system passes through a building wall, pipe bellow or anti-vibration material shall be employed to prevent the vibration

groundwater conditions respectively. iii.

respectively. iv.

For new and existing rock slopes, the above respective FS in clause ii and iii shall be applied.

mm to 150 mm all round while the top of the plinth shall be 100 mm to 150 mm above the floor. The concrete mix for the plinths shall be Grade 25.

For natural slopes or existing manmade slopes more than 10 years old, the minimum values of the aforesaid FS may be reduced to 1.2, 1.1 and 1.0

from transmitting to the building. Apart from depth, the size of foundation plinth shall have a minimum border of 100

The required factors of safety (FS) for slope stability are 1.5, 1.2 and 1.1 for normal groundwater conditions, 10-year return period rainfall and the worst

the weight of foundation can be reduce to half of the standard weight. •

Except provided under Clause 3.4.4.b.vii below, all slopes whether on cut or fill section shall be analysed for slope stability. In the analysis, groundwater

pumpset.

iv.

The distance between the crest of a slope and any water pipes, water

v.

Geological mapping and interpretation shall be carried out to analyse the stability of rock slopes.

vi.

The modes of potential failures such as wedge, toppling and/ or plane failures shall be identified and suitable rock supports shall be provided as suggested in Table 3.10.

vii.

Slope stabilization measures shall be required when the FS is not adequate in order to achieve the FS required above.


3-10


viii.

Slope stability analysis may not be required when:•

Vetiver grass (Vetiveria zizanionides) or other grass with equivalent morphological, physiological and ecological characteristics.

Height of fill slope that does not exceed 10 m and slope gradient is ii.

gentler than 1:2 (v:h) with 1.8 m berm at every 5 m vertical interval.

techniques and quality control shall be carried out for vegetation on the

The fill is formed of well compacted suitable material having SPT N

slopes. New turf shall be watered in the dry season, turf shall not be placed

(no. of blows) > 8. •

on very hard ground before introduction of topsoil and horizontal grooving

Height of cut slope that does not exceed 10 m and slope gradient is

shall be formed before turfing.

gentler than 1:1.5 (v:h) with 1.8 m berm at every 5 m vertical interval. iii.

The cut is in ideal soils of silty to sandy nature having SPT N > 8. •

Good agricultural practices such as introduction of topsoil, correct planting

On difficult or unusual sites, which cannot support plant growth, such as hard soil, acidic soil and steep slopes, suitable slope surface protection

Rock cut slope that does not exceed 10 m high and slope gradient is

method such as special treatment using geomat or guniting or other methods

gentler than 4:1 (v:h) in sound rocks such as Grade I or II granite, free

approved by SYABAS shall be used.

from loose or unstable blocks or fragments. iv.

Rock supports effective to the mode of potential failures such as wedge, toppling and/ or plane failures as identified in Table 3.8 shall be provided.

c.

v.

Drainage Provisions

All loose rock fragments shall be scaled. Fractures rock zones susceptible to erosion or rocks susceptible to deterioration shall be protected by a suitable

i.

method such as shotcrete with proper drainage weepholes.

All slopes shall be provided with subsoil drainage such as horizontal drains:•

At the toe of the slope.

•

Where the presence of water bodies (for example, water catchment

e.

Reservoir, Tank and Pumping Station Foundation

area, sewers, drains and water mains) is above the slope. •

•

Groundwater level is uncertain or likely to be higher than the design

All reservoirs/ tanks and pumping stations should preferably be founded on competent cut

value.

ground otherwise deep foundation such as pile foundation shall be provided.

Drainage of groundwater is hindered by slope surface protection works such as shotcrete (sprayed concrete).

ii.

Berm drains and interceptor drains shall be provided on the berms and at the

3.5

MATERIALS

crest of the slope respectively. The drains shall be cast-in-situ and steel reinforced. All drains shall be designed as per Table 3.8.

a.

All materials used for water supply system shall have the approval from SYABAS. SYABAS reserves the right to inspect the materials to be used before installation. Unapproved materials/ products including the works completed using the unapproved

d.

materials shall be cleared from the site. Otherwise, the development will not be taken

Slope Surface Protection

over by SYABAS. i.

All slope surface shall be fully (closed) turfed or protected against erosion upon completion of reservoir/ tank and pumping station construction. The

b.

The types of incoming mains (without tapping) are as shown in Table 3.3.

c.

The types of reticulation pipes are as shown in Table 3.4.

grass shall be hardy, have extensive and strong root system which is effective for erosion control and perennial (long lasting) such as cow grass,


3-11


3.6

CHECKLIST

Table 3.1 : Estimation of water consumption Residential

The checklist shall be completed and endorsed by a consulting engineer and shall be attached together with the submission document. The design checklist of External Water Supply System is shown in APPENDIX C.

Daily Water Usage (l/d)

Low cost house and low cost flat

1,000 /unit

Medium low cost flat and medium cost house

1,500 /unit

Single and double storey terrace house

1,500 /unit

Apartment/ condominium

1,500 /unit

Single and double storey semi detached house

2,000 /unit

Single and double storey bungalow (Additional 450 litres per room if more than 4 bedrooms)

2,000 /unit

Commercial Single storey shop

2,000 /unit

Multiple storey shop house

1,500 /storey

Office

1,000 /100m2

Petrol station – a) With car washing bay b) Without car washing bay Market

50,000 /unit 10,000 /unit

– a) Dry stall

450 /stall

b) Wet stall

1,500 /stall

Hawker Centre

1,500 /stall

Hotel

1,500 /room

Shopping complex

1,000 /100m2 According to daily water usage (Note 1)

Industrial lots Light industrial workshop

1,500 /unit

Terrace factory

5,000 /unit

Warehouse

1,500 /unit Public and Social

Hospital Mosque/ Surau

25,000 /unit

Club House

50,000 /unit

Balai Raya

2,000 /unit

Boarding school Institution Kindergarten

Consulting Engineers

50 /person

Community Hall

Day school

SEPAKAT SETIA PERUNDING (SDN) BHD. (14142-M)

1,500 /bed

50 /student 250 /student 25,000 /ha 30 /child

3-12


Note:1.

Table 3.3 : Materials for incoming main/ main pipe (without tapping) The consulting engineer shall estimate and justify the water demand consumption,

Conditions

Incoming Main Pipe Materials

otherwise 75,000 l/d for every hectare of land shall apply. 2.

If the premises category/ usage is not stated in Table 3.1, further information shall be obtained from SYABAS.

Non-corrosive soil

- Mild Steel (for diameter ≥ 700 mm) (note 1) - Ductile Iron (note 3)

Corrosive soil/ coastal area

-

- Pumping main - Gravity main in undulating area, sloping/ hilly area

- Mild Steel (for diameter ≥ 700 mm) (note 1) - Ductile Iron (note 4)

Under roadways

- Mild Steel (for diameter ≥ 700 mm) (note 1) - Ductile Iron (note 3) - HDPE/ ABS/ GRP with RC pipe sleeve

HDPE ABS GRP Ductile Iron with thicker zinc coating (note 3) Mild Steel (for diameter ≥ 700 mm) (note 1 & 2)

Table 3.2 : Hazen-William Coefficient C for various pipe materials Type of Pipe

Hazen-William Coefficient C

Ductile Iron (cement lined)

100

Steel (cement lined)

100

HDPE/ ABS/ GRP

120

Note : 1.

Mild steel pipes with diameter of below 700 mm complete with full internal lining protection acceptable to SYABAS and with CCTV confirmation may be considered. Alternatively, flange jointed mild steel pipes are acceptable.

2.

Mild steel pipes shall not be used for corrosive soil, however it can be considered if protected with anodic/ cathodic protection.

3.

Ductile iron pipes shall be push-in jointed complete with PE wrapping.

4.

Ductile iron pipes shall be flange jointed or restraint tie bar jointed complete with PE wrapping.


5.

All plastic pipes shall be of PN 12 and above.

6.

All pipeworks shall be as per SYABAS Specifications.

3-13


Table 3.4 : Materials for reticulation pipes Conditions

Reticulation Pipe Materials

Corrosive soil, coastal area, ex-mining land, etc

-

HDPE ABS GRP Ductile Iron with thicker zinc coating Mild Steel (for diameter ≥ 700 mm) (note 1 & 2)

Fully industrial area, commercial, flats, condominium and shop houses

- Ductile Iron

Residential area and mixed developement

-

HDPE ABS GRP Ductile Iron

Table 3.5 : Sampling box No. of Connections Below 200

Not required

201 – 1,000

1

1,001 and above

Under roadways

Additional 1 no. of sampling box for every 1,000 connections

Table 3.6 : DMZ chamber requirements for each hydraulic zone No. of Connections

- Mild Steel (for diameter ≥ 700 mm) (note 1) - Ductile Iron - HDPE/ ABS/ GRP with RC pipe sleeve

No. of Sampling Box

No. of DMZ Chamber

Below 500

Not required

501 – 2,000

1

2,001 and above

Additional 1 no. of DMZ chamber for every 2,000 connections

Note : 1.

Mild steel pipes with diameter of below 700 mm complete with full internal lining protection acceptable to SYABAS and with CCTV confirmation may be considered. Alternatively, flange jointed mild steel pipes are acceptable.

2.

Mild steel pipes shall not be used for corrosive soil, however it can be considered if protected with anodic/ cathodic protection.

3.


4.



3-14


Table 3.7 : Storage capacity requirements for reservoirs/ tanks

Table 3.8 : Storm drainage system design requirements

Storage Requirement (day of total average daily water demand)

Conditions

Reservoir (external)

Tank (within consumer premises)

RESIDENTIAL, SHOPHOUSES, OFFICES, GOVERNMENT BUILDINGS AND EDUCTIONAL BUILDINGS Demand < 1 Mld

Not Required

2

Drain Type General site drainage

Design Flow 5 years ARI + check 100 years ARI 5 years ARI + check 100 years ARI

Overflow discharge drain to

or 5 years ARI + Overflow

approved discharge point

whichever is the greater

Low rise (5 storey and below) development with demand ≥ 1 Mld

1

1

Not Required

2

Not Required

2

b) Low rise with demand ≥ 1 Mld

1

1

c) Low rise with demand < 1 Mld

Not Required

2

High rise (6 storeys and above) development with demand ≥ 1 Mld Mixed development (low rise and high rise) with demand ≥ 1 Mld:a) High rise

Table 3.9 : Premix road pavement structures Thickness (mm) Pavement Structure

All developments within Putrajaya

Already Provided

2

All developments within Cyberjaya

1

2

INDUSTRIAL AREA/ FACTORY, HOSPITAL, HOTELS, RESORTS AND COMMERCIAL COMPLEXES a) Demand ≥ 1Mld

1

2

b) Demand < 1 Mld

Not Required

3

MIXED DEVELOPMENT OF RESIDENTIAL, INDUSTRIAL AND COMMERCIAL

Combination of the above principles


Trafficable Area

Non-trafficable Area

Road Base (crusher run)

250

150

Binder Course

60

60

Wearing Course

40

40

3-15


Table 3.10 : Rock Slope Stabilization Measures

√

√

√

√

√

√

√

√

√

√

√

√

√

√

√

Plane Failure

Wedge Failure √

√

√

Toppling Failure √

√

Rock or Debris Fall & General Degradation √

√

√

√

√

√

√

√

√

√

√

√

√

√

√

* Table 3.10 is extracted from “Geotechnical Manual for Slopes”, Geotechnical Engineering Office, Civil Engineering Department, The Government of the Hong Kong Special Administrative Region, 2000.


Figure 3.1 : Typical reservoir/ water tank – slopes configuration

√

√

Scaling of loose blocks

√

Netting

√

Rock trap fence/wall

√

Rock trap ditch

Short drainholes

√

Move structure/highway

Screeded (paved) surface

√

Long drainholes/ adits

Drainage ditch

√

Rockfall Control

Anchor

√

Drainage

Bolt

√

Dowel

Anchored wall

√

Strap

Buttress

Local structural "dentition"

Permeable (masonry) facing

√

Structural Support

Gunite facing

√

Local excavation

Excavation

Bench

Name (with sketch)

STABILIZATION MEASURES

Flatten Slope

POTENTIAL FAILURE TYPE

3-16


4.0

d.

INTERNAL PLUMBING SYSTEM

Only pipes, valves, tanks and other installations that have been approved by SYABAS can be used.

4.1

e.

PLANS

Pipe to kitchen sinks shall be drawn directly from the incoming pipe before it branches to a tank (not applicable for developments with central storage).

a.

f.

Consulting Engineers shall submit three (3) sets of finalized plans of A1 size including one (1) no. CD containing the soft copy of the drawings in AutoCAD format to the

to the storage/ break tank to avoid contamination in the main pipeline. g.

respective SYABAS District for approval. The plans required are as follows:i.

Site plan.

ii.

Building plans that are approved by local Authority.

iii.

Floor plan and cross section including meter location, fittings location, valves, Detailed plan of cross sections showing tank and pump room locations.

v.

Schematic diagram of pipework layout.

vi.

A copy of approved letter for external water supply system and a copy of

Water piping system for domestic water supply, air conditioning and fire fighting system shall be separated.

pipeline route, etc. iv.

All other tapping from the incoming pipe within the premise shall only be channelled

h.

Automatic flushing is not allowed.

i.

Manual flushing or flush valve shall be used for urinal.

j.

Separate pipe from storage tank shall be provided for system adopting flush valve.

k.

All saddle used shall have protective coating as per SYABAS requirement.

l.

Saddles for High Density Polyethylene (HDPE) pipe shall be of electro-fusion tapping.

m.

All bolts and nuts underground shall be of stainless steel.

approved letter for tapping point from SYABAS’ Headquarters for proposed development with demand exceeding 50,000 litres per day. 4.2.2 b.

For building of three (3) storeys and below without pumping system, two (2) sets of calculations by design chart method shall be submitted by the architect, mechanical

a.

Nominal size, type and class of pipes shall be stated in the drawings.

engineer, civil engineer or hydraulic engineer.

b.

Detailed information including catalogues of valves shall be submitted to SYABAS.

For building with pumping system or development of four (4) storeys and above,

c.

Minimum internal diameter for internal plumbing shall be 15 mm.

two (2) sets of hydraulic calculations shall be submitted and endorsed by

d.

Usage of G.I. and uPVC pipes are not allowed.

mechanical or civil engineer.

e.

Types of pipe allowed for cold-water system are shown in Table 4.1.

d.

All plans for fire fighting system shall be referred to BOMBA.

f.

For dropper pipes with pressure exceeding 30 m head, pressure reducing valve or break

e.

Fire fighting pipes shall be of red colour and domestic pipes shall be of blue colour.

c.

4.2

Pipes and Valves

TECHNICAL REQUIREMENTS

tank shall be used. g.

Connection for HDPE pipe shall be of electro-fusion and butt weld.

h.

Control valves (ball or stop cock type), shall be installed on : i.

All incoming pipes to suction tank and roof storage tank at 1.8 m above floor level.

4.2.1

General

ii.

All outgoing pipes from suction tank in an accessible position at maximum 1.8 m above floor level.

a.

All plumbers trained by SYABAS will be provided with an ID card that contains personal details and photograph to ensure that only qualified plumbers are allowed to carry out

iii.

Pipes to each toilet compartment and pipes to fittings such as sink, basin, WC and urinal.

plumbing installation works. b.

Tapping works shall only be conducted by Licensed Plumber Type 2.

c.

All pipe installation works within a building shall be carried out by a registered plumber.


4-1


4.2.3

Water Tanks within Consumer Premises a.

c.

Safety and Security i.

Capacity

The storage tank (including any tap fitted to the storage tank) and its ancillary equipment shall be kept properly locked at all time.

i. ii.

ii.

Generally, the effective capacity of storage tank (actual volume of water that can be drawn for usage) shall be as shown in Table 3.7 and Table 4.2.

the premises. Only spiral or walk up staircase shall be used and no cat ladder

Factory with future expansion plan shall allocate sufficient space for ultimate

shall be allowed. iii.

storage requirement. iii.

Top Water Level (TWL) for suction tank and roof storage tank shall be in Ordnance iv.

For low cost house/ flat, water tub of minimum 120 litres shall be provided in the

The storage tank shall be placed on flat RC slabs complete with proper drainage system. Timber and angle iron shall not be used for the support.

v.

bathroom. v.

There shall be proper access for removal and replacement of the storage tank without removing or damaging any part of the building.

Datum Level (ODL). iv.

All roof storage tanks shall be easily to access with proper staircase within

Separate water tank for food court in building shall be provided.

The base of the storage tank shall be fully supported over its whole area by a durable, rigid, flat and level platform sufficiently strong to withstand the weight of the cistern without deflection when filled with water.

b.

Pipeworks and Materials 4.2.4 i.

Water tank with capacity of less than 4,500 litres shall have overflow pipe which shall also function as a warning pipe and shall be installed at a visible location.

ii. iii.

Pumping Systems a.

Water tank with capacity of 4,500 litres and above shall have separate overflow

case where the pumping head is more than 75 m per stage, a break tank with a

and warning pipe and shall be installed at a visible location.

capacity of 11.5 m3 shall be introduced.

Overflow pipe and scour pipe shall be one size larger than the incoming pipe and

b.

Scour pipe shall be installed underneath the tank and channelled to the nearest

c.

Sampling pipe shall be provided at the water storage tank for building which

d.

provides water for food or beverage purposes. vi.

The types of tanks allowed to be used as water storage tanks in buildings are

Reinforced Concrete (RC)

•

High Density Polyethylene (HDPE)

•

Stainless Steel

•

Glass Coated Steel


Maximum pumping rate for on duty pump shall be adequate to fill the commercial or office storage tank in eight (8) hours and residential storage tank in twelve (12) hours.

e.

Suction tank shall be sized to be between 33% to 50% of daily water demand and roof storage tank shall be sized to be between 50% to 67% of daily water demand.

subject to the approval by SYABAS. The following materials are approved:•

Selector switch shall be provided at the starter panel in order for the pump to be operated manually.

floor trap, sump or drain at a visible location. v.

Pumping system operation shall have automatic control by stainless steel electrodes located within the suction tank and storage tank.

not smaller than the outlet pipe. iv.

Total pumping head shall be as per design and not more than 75 m per stage. For

f.

For cases where the number of pumps on standby is 200%, roof storage tank may be reduced to a size not less than 30% of daily water demand, and suction tank to have not less than 70% of storage capacity.

g.

For pumping design using pressurized system where the storage is 100% in ground floor storage tank, i.

The number of pumps on standby shall be 200% of duty pumps.

ii.

Pumping system shall be of variable speed drive type if applicable.

4-2


iii. h.

A standby generator shall be provided.

Alarm system shall be provided to give signal when the water level in the storage tank is

4.3

WATER CONSERVATION

4.3.1

General

lower than pump start level. i.

For buildings with rain water collection system, the size of water storage tank may be

Water shall be used efficiently and effectively at all times. Consumers are encouraged to

reduced to 75% of daily water demand. j.

adopt water conservation measures in all non-domestic and domestic premises and

For building with multi-basement lower than external road level, pumps and suction

construction sites to conserve water.

tanks shall not be located at the lowest level of the basement to avoid water contamination and damaged to pumping equipment. For building with single basement, pumps and suction tanks located at basement shall be provided with

4.3.2

Water Conservation Measures

proper drainage system to prevent flooding. a. 4.2.5

Hot Water Systems

Use of Water Saving Devices i.

Residential premises Install constant flow regulators at wash basin taps, wash basin mixers,

a.

Hot water piping system shall be separated and drawn directly from the storage tank.

shower taps and shower mixers.

Pumping system is only allowed after the water tank. ii.

b.

Control valve shall not be fixed at the heater outlet pipe for instant water heater.

c.

Safety valve, whether using vent pipe or pressure relief valve, shall be drained to the

Use low capacity dual flushing cisterns with capacity not exceeding 6 litres in

bathroom floor trap for storage type water heater.

all new premises and existing premises undergoing renovation.

d.

Toilets and washrooms in all premises

Types of pipes allowed for hot-water system are subject to approval of SYABAS. The types of pipes approved are stainless steel, copper and PP-R pipes.

iii.

Toilets and washrooms in non-residential premises •

Install self-closing delayed-action taps at all wash basins and shower points.

4.2.6

Swimming Pools

•

Install constant flow regulators at all wash basin mixers and shower mixers.

a.

Pool capacity, turnover time, rate of water cycle, rate of filtration and make-up water volume, which consists of backwash water, water displacement, and evaporation

iv.

loss shall be mentioned in the drawing. b.

Kitchens and cooking areas in non-residential areas Install constant flow regulators at all sink taps and mixers.

Detailed schematic drawing of swimming pool piping system shall be submitted to SYABAS.

c.

Technical details and catalogue for pump and filter shall be submitted to SYABAS.

d.

Swimming pool shall be designed in order to be filled within one (1) day to three (3) days.

v.

Canteens Install self-closing delayed-action taps at all wash basins and wash troughs.

vi.

Laboratories Install constant flow regulators at all wash basins and sink taps except for safety reasons.


4-3


vii.

Table 4.1: Internal Pipe Materials

Factories Adopt the following measures in factories where possible and applicable:•

Type of Pipe

Setting up water recycling system to reclaim water for reuse in the

Communication Pipe

production process and other non-potable purposes. •

Stainless Steel/ HDPE (for selected suppliers only)(Note 5)/

Flanged Mild Steel/ Ductile Iron

Polysteel

Use of non-water cooled systems such as for cooling purposes. Stainless Steel/ ABS/ PP-R/

b.

D = 100 mm dia.– 150 mm dia.

Setting up of water recovery system for boilers to recover condensate water as make-up water.

•

D < 100 mm dia.

Service Pipe

Rainwater Harvesting System

Copper/ Polybutelene/ Polysteel/ POB/ GRP

Flanged Mild Steel/ ABS/ Ductile Iron/ HDPE

Implement rainwater harvesting system which involves the collection, storage and distribution of rainwater from the roof of a premises.

Pumped Riser Pipe

4.4

Stainless Steel/ Copper/ Polysteel

Flanged Mild Steel/ Ductile Iron (Note 2)

CHECKLIST Distribution The checklist shall be completed and endorsed by consulting engineer and shall be

Pipe

Stainless Steel/ ABS/ PP-R/ Copper / Polysteel/ POB/ GRP

Flanged Mild Steel/ ABS/ Ductile Iron/ HDPE

attached together with the submission document. The design checklist of Internal Plumbing System is shown in APPENDIX C. Note:1.

Polysteel pipe shall subject to the quality of work inspections by pipe manufacturer.

2.

Ductile iron pipe for pumped riser shall be flange ended or push-in jointed complete with restraint tie bars.

3.


4.


5.

The usage of HDPE pipe as communication pipe shall be those approved by SYABAS.


4-4


Table 4.2: Internal storage tank (within consumer premises) effective capacity according to types of premise or usage

Item

Type of Premises

Effective Capacity (equivalent to 1-day average demand) litres

1

Low cost house or low cost flat

1,000 /unit

2

Medium cost flat and medium cost house

1,000 /unit

3

Single or double storey terrace house, apartment and condominium

1,500 /unit

4

Single or double storey semi-detached house and bungalow (Additional 450 litres per room if more than 4 bedrooms)

2,000 /unit

5

Single storey shop house

2,000 /unit

6

Multiple storey shop house

1,500 /floor

7

Office

1,000 /100m2

8

Shopping Complex

1,000 /100m2

9

Hotel

1,500 /room

10

Hospital

1,500 /bed

11

Day School

12

Boarding School

13

Kindergarten

14

Institution

15

Mosque/ Surau

16

Market - Dry Stall

450 /unit

17

Market - Wet Stall

1,500 /unit

18

Hawker Centre

1,500 /unit

19

Community Hall

25,000 /unit

20

Balai Raya

2,000 /unit

21

Club House

50,000 /unit

22

Petrol Station (without car washing bay)

10,000 /unit

23

Petrol Station (with car washing bay)

50,000 /unit

24

Light industrial workshop

1,500 /unit

25

Terrace factory

5,000 /unit

26

Warehouse

1,500 /unit

27

Industrial Area

50 /student 250 /student 30 /child 25,000 /hectare 50 /person

According to daily water usage

* Mutiply accordingly for any additional water storage as required under Table 3.7. SEPAKAT SETIA PERUNDING (SDN) BHD. (14142-M) Consulting Engineers

4-5


5.0

disconnect. A meter should preferably be installed in a box recessed into the wall

METERING

and shall not be at the corridor that will affects human traffic flow. Site verification 5.1

with SYABAS is necessary before meter stand installation.

GENERAL g. a.

For meters laced in shaft or boxed in chambers, sufficient natural light must be available for ease of reading. Alternatively, electrical lighting shall be provided.

In general, water supply for different premises and for different uses shall be metered. The need to have a meter and its location shall be determined by SYABAS.

b.

All supplies to fire hydrants and other fire fighting devices installed in a consumer’s premises or within its compound shall be metered.

c.

5.3

SIZES OF METERS

For multi-unit premises, water is supplied through bulk meters which measure the total volume of water measured by sub-meters fixed at the individual units. The

The size of mechanical water meter for each premises shall be determined based on the

registered consumer for the bulk meter shall be responsible to pay for the water

water flow rates and water usage as shown in Table 5.1. Table 5.2 shows the size details of

charges based on the difference between the registered consumption of the bulk

electro-magnetic water meter.

meter and all the sub-meters, including leakages. d.

Water meter locations as approved by SYABAS will be supplied and maintained by SYABAS and will remain the property of SYABAS.

5.4

AUTOMATIC METER READING SYSTEM (AMR)

e.

The consumer shall be solely responsible for the safe custody of the meter.

f.

Individual metering shall be carried out at multi-unit residential premises and

The use of AMR is encouraged as it provides enhanced security, privacy, accuracy and

subject to SYABAS approval. However, the Developer/ Management Corporation

timeliness in meter reading. This is particularly useful in the following area:-

shall sign an agreement with SYABAS to ensure that the Developer/ Management Corporation will operate and maintain the water supply systems after the bulk meter and to pay the bill difference between the bulk meter amount and the sum of the

•

High rise condominium and flats.

•

Gated community.

•

High security areas such as prison, police complexes.

individual meters amount. For developer who opts for AMR shall pay for the installation of the AMR system including the AMR meter. The proposed AMR system shall be approved by SYABAS prior to 5.2

LOCATIONS OF METERS a.

The location of a meter shall be determined by SYABAS.

b.

The meter shall be installed in such a position that it should be unobstructive and

installation.

5.5

METER STANDS

5.5.1

General

can be easily accessible for meter installation, meter reading and maintenance. c.

For multi-storey premises, meters shall be installed on the ground floor and arranged according to levels in ascending order and marked with address plates.

d.

For residential premises, all individual meters shall be installed in front but outside the

a.

fencing of premises. e. f.

This section covers information on the dimensions and various material requirements for water meter stands connected to public mains.

All bulk meters for apartment, flat, factory, condominium and school shall be placed within

b.

Material for meter stand shall be of stainless steel or polysteel.

the fenced compound area and near the guardhouse or entrance gate.

c.

For each individual meter stands for multi-unit residential premises, the meter shall

Meters shall be centrally placed at each floor or in front of the units and at locations

be arranged in correct order and marked with paint as per SYABAS requirements.

which are easy to access and read (eye level with sufficient lighting) and to SEPAKAT SETIA PERUNDING (SDN) BHD. (14142-M) Consulting Engineers

5-1


d.

Table 5.1 : Size of mechanical water meter

Mechanical meters with upward water flow direction are allowed to be placed vertically. Such meters shall be installed at 1.2 m to 1.5 m above ground.

e.

The maximum number of horizontal meters that can be stacked one over the other

Meter Size

shall be eight (8) numbers only. f.

Minimum size of meter shall be 20 mm diameter.

g.

Gap between centerline at meter stand shall be not less than 150 mm.

h.

Stop valves shall be placed before and after the meters.

i.

Integrated lockable valve such as Ballo Fix is optional.

j.

Meter stands for single and multi meters (up to 5 water meters) are shown in attached SYABAS’ Standard Drawings.

k.

Meter stands should comprise the following components:-

Maximum Flow (m3/hr)

Minimum Flow (m3/hr) Class B

Class C

Nominal Flow (m3/hr)

Range of Monthly Consumption (m3/month)

15 mm

3

-

0.015

0.0226 – 2.8

8 – 2,160

20 mm

5

-

0.025

0.0376 – 4.8

13 – 3,600

25 mm

7

-

0.035

0.0526 – 6.8

18 – 5,040

40mm

20

-

0.1

0.14 – 19.8

54 – 14,400

50mm

30

0.45

-

3.1 – 29.8

1,080 – 21,600

80 mm

80

1.2

-

8.1 – 79.8

2,880 – 57,600

i.

Stainless steel/ polysteel pipe.

ii.

Outgoing pipes of 20 mm ID.

iii.

Incoming pipes of 20 mm ID for one-meter stands.

100 mm

120

1.8

-

12.1 – 119.8

4,320 – 86,400

iv.

Incoming pipes of 25 mm ID for two-meter stands.

150 mm

300

4.5

-

30.1 – 299.8

10,800 – 216,000

v.

Incoming pipes of 50 mm ID for three to five meter stands.

vi.

Brass gate valve or ball valve (full bore) for two to five meter stands

200 mm

500

7.5

-

50.1 – 499.8

18,000 – 360,000

(optional). vii.

Non-return valves at sub-meters and individual meters for high rise building.

viii.

Brass or stainless steel fittings (e.g. nipple, coupling, elbow, jam nut, tee etc).

ix.

Submains, communication pipes and associated fittings.

x.

Saddle and ferrule for tapping from public main.

xi.

Concrete slab (600 mm x 600 mm x 50 mm thick) for all meter stand.

Note:1.

The size of meter given in the above table is the size of mechanical meter.

2.

SYABAS may change the meter size should other meter type be used.

Table 5.2 : Size of electro-magnetic water meter l.

Other jointing combinations for single and multi meter stands are shown in attached SYABAS’ Standard Drawings.

5.5.2

Markings for Meter stands

No marking for meter stand is required for single and two meter stands. For three or more meter stands, identification markings of the unit numbers shall be written with paint on

Meter Size

Maximum Flow (m3/hr)

Nominal Flow (m3/hr)

Range of Monthly Consumption (m3/month)

100 mm

282

8.7

3,130 - 203,000

150 mm

600

20

7,200 - 432,000

200 mm

1,100

35

12,600 - 792,000

both side of the meter stand itself as per SYABAS requirements.


5-2


6.0

b.

ELECTRICAL SYSTEM

The following standards shall generally be applicable to the design of the electrical systems:-

6.1

The electrical design criteria for a typical pumping station should comprise fourteen (14) main

i.

Malaysian Standards (MS) if available.

areas namely:-

ii.

Other International Standards such as IEC, IES, IEEE, where applicable.

iii.

Wiring Regulations for Electrical Installation, latest edition approved by ST.

iv.

Malaysia Standards Codes of Practice.

a.

Standards, code of practice, rules and regulations

b.

Power supply requirements

c.

HT installation

Where there is a discrepancy in the standards or requirements between two

d.

LV installation

documents or between a document and the specific requirements of the local

e.

Essential power supply

authorities having jurisdiction, the more stringent standard or requirement shall be

f.

Motor starter panel (Motor control centre)

adopted.

g.

Electrical motor

h.

Internal lighting and power

i.

Compound lighting

j.

Lightning protection system

k.

Earthing system

l.

Electrical spare parts

for approval:-

m.

Electrical as-built drawings

i.

Approval Letter from SYABAS’ Development Department.

n.

Testing and commissioning

ii.

Catalogues for switchgears, relays and meter panels.

iii.

Control circuit diagrams for pumping system.

iv.

Catalogues for Telemetry and Instrumentation Equipment.

v.

All electrical conceptual drawings including single line diagrams and layout

6.2

DETAILED DESIGN SUBMISSIONS a.

STANDARDS, CODE OF PRACTICE, RULES AND REGULATIONS

The consulting engineer shall submit the following during the detailed design stage

drawings as per items listed in Clause 6.0.b. to 6.0.k. a.

All design, works performed, materials and equipment installed shall conform to the

vi.

standards, regulations and by-laws of the authorities having jurisdiction over the

Three (3) sets of SCADA/ Telemetry System drawings as per items listed in Chapter 8.0 - SCADA/ Telemetry System.

electrical system installation. These include : b.

All electrical drawings shall be of A1 size.

c.

The submission requirements shall as per Clause 3.3.

i.

Department of Environment (DOE)

ii.

Department of Civil Aviation (DCA)

iii.

Department of Occupational Safety and Health (DOSH)

iv.

Local Government (Majlis)

v.

Energy Commission [Suruhanjaya Tenaga (ST)]

vi.

Tenaga Nasional Berhad (TNB)

vii.

Telekom Malaysia Berhad (TM)

their consulting engineer for power supply to the reservoir/ tank and pumping

viii.

Jabatan Bomba Dan Penyelamat (BOMBA)

station.

ix.

All other relevant authorities having jurisdiction in the area concerned

6.3

POWER SUPPLY REQUIREMENTS a.

b.

The owner or developer shall apply to TENAGA NASIONAL BERHAD (TNB) through

The consulting engineer shall liaise with TNB to confirm and obtain approval on the numbers, area of land required and locations of the TNB substations if required.


6-1


c.

For load more than 400 A (415 V supply), a 11 kV substation shall be provided and

c.

For Main Incoming of Supply of less than 250 A

subject to TNB’s approval. The consulting engineer shall apply on behalf of

MCCB in series with main Fuse Switch coupled with one (1) element earth fault IDMT relay

SYABAS for the best electrical tariff for SYABAS application.

and three (3) elements over current IDMT relay complete with all current transformers for protection shall be provided. IDMT shall be of electro-mechanical type. Surge Protection device complying with Zone 1 Protection as defined in IEC 61643-12 shall be

6.4

HT INSTALLATIONS a.

provided.

The 11 kV switchgear shall incorporate the Power Transformers (PT) and metering

d.

Current Transformers (CT) for TNB metering. b.

A 60A Fuse Switch and MCCB complete with shut trip coil in series with a Zero CT

The 11 kV switchgear shall be of vacuum type. The transformer shall be of copper

and Earth Leakage Relay (ELR) complete with over current used at the incomer side

winding and cast resin type for greater safety against fire hazard and lower

shall be provided.

maintenance requirement. c.

A separate TNB metering compartment shall be provided in the HT switch room.

d.

All HT motor design shall be subject to SYABAS approval.

For Main Incoming of less than 60 A only

Electric Surge Protection device complying with Zone 1

Protection as defined in IEC 61643-12 shall be provided. e.

Outgoing Breakers at Main Switchboard All outgoing breakers from the main switchboard to other parts of the electrical system (such as distribution board and motor starter panel) shall be MCCB complete with shut

6.5

LV INSTALLATIONS

trip coil of appropriate rating. The rating of MCCB shall be 25% higher than the full load current.

a.

The LV switchboard shall consist of two types:i.

Main incoming running load of 60 A and above -

f.

For CT metering scheme, central automatic power factor correction panel with step correction shall be provided at the main switchboard to maintain power factor of

Floor standing cubicle type

above 0.90 in compliance with the TNB regulations. For small installations, fixed ii.

type of capacitors shall be installed at each individual starter panel.

Main incoming running load of less than 60 A -

Either floor standing or wall mounted type

g.

Automatic harmonic current suppressors capacitors and blocking reactors of appropriate rating shall be installed in the main switchboards where harmonic

iii.

Other LV switchboards running load of 60 A and above -

iv.

Floor standing cubicle type

generating equipment such as Variable Speed Drives (VSD) is installed. h.

of XLPE insulated copper cable. For distribution of load, XLPE or PVC insulated

Other LV switchboards running load of less than 60 A -

Cable from main switchboard to distribution boards and motor starter panel shall be copper cables shall be used. XLPE insulated armoured copper cable shall be used

Wall mounted type

for underground installations. b.

For Main Incoming of 250 A and above Air Circuit Breaker (ACB) coupled with one (1) element earth fault IDMT relay and three (3) elements over current IDMT relay complete with all current transformers for protection

i.

different fire zones shall be of fire resistance type approved by BOMBA. j.

All sub-circuit and final-circuit wiring shall be in high impact uPVC conduits when concealed in false ceiling or walls and in galvanised iron (G.I.) conduits when

shall be provided. IDMT shall be of electro-mechanical type. Surge Protection device complying with Zone 1 Protection as defined in IEC 61643-12 shall be provided.

Dedicated cable to fire protection equipment if the cable route passes through

exposed or supplied to fire protection devices. k.

All cable trunkings, trays, ladders shall be hot-dipped galvanised. Identification shall be provided for electrical trunkings and cable trays.


6-2


l.

d.

The number of cabling installed in trunking/ trays/ conduits/ ladders shall be such

least 24 hours at full load.

that a space factor of 45% is not exceeded after making a provision of 25% for e.

installation of future cables. m.

The fuel tank shall have capacity to enable generator sets to continuously run for at The sizing of standby generator shall take into consideration of all duty pumps

The material and construction of the switchboards and distribution boards (DB)

running (N-1) and the starting of the last duty pump. (For example; Sizing criteria for

shall be as follows: -

3 duty pumps: 2 duty pump running + 1 duty pump starting)

i.

Main Switchboard Electro-galvanised or galvanised iron (G.I.) sheet with minimum ingress

6.7

MOTOR STARTER PANELS

protection of IP42, Form 4 segregation requirement, panel thickness shall be of at least 2 mm, beige in colour and paint thickness of at least 75 micron on

a.

average. ii.

Sub-switchboard

All motor starter panels shall be of the floor standing cubicle type except for motor having loads of less than 60 A, which can be floor standing or wall mounted type.

b.

The motor starter shall either be together with main electrical switchboard or it shall be stand alone on its own with sub-main cables being fed from the main switchboard through

Electro-galvanised or galvanised iron (G.I.) sheet with minimum ingress

circuit protective devices to its starter panel complete with earth fault relay and over

protection of IP42, panel thickness shall be of at least 2 mm, beige in colour and paint thickness of at least 75 micron on average. iii.

Distribution Board

current relay IDMT. c.

The starter panel shall have the following features:i.

incoming supply to its starter panel.

Electro-galvanised or galvanised iron (G.I.) sheet with minimum ingress protection of IP42, panel thickness shall be of at least 1.5 mm, beige in colour

ii. iii.

The contactors rating shall be 25% more than the full load motor rating.

iv.

For DOL starter contactor rating shall be 100% more than the full load motor rating.

ESSENTIAL POWER SUPPLY a. b.

v.

MCB shall be provided for its individual control circuit.

Essential power supply systems in the form of diesel standby generator set shall be

vi.

Motor heater circuit shall be complete with motor heater switch and indicator light.

provided for pumping station serving the demand capacity of more than 1.5 Mld.

vii.

Panel heater circuit shall be complete with MCB, heater switch, thermostat control and indicator light.

The essential power supply system shall be in compliance with Local Government (Majlis) and Department of Environment’s requirement on limiting noise level.

c.

All ACB/ MCCB shall be 50 kA for all incomer, starter panel and instrument panel.

and paint thickness of at least 75 micron on average.

6.6

ACB/ MCCB or combination or Isolator and Fuse Link shall be provided for main

viii.

Motor Protection Relay

Upon TNB power failure, the standby generator shall run up to full speed and the

•

0 kW - 18 kW

changeover of power to the generator set will be delayed until 9 seconds to allow

•

Above 18 kW - 93 kW – Electronic microprocessor type of

the TNB automatic changeover to alternative power source to complete. If TNB

– Thermal Overload Relay motor protection relay

power supply restoration is detected within this 9 seconds window, the changeover

•

Above 93 kW

to generator supply will be blocked. The generator set will continue to run for 10

– Electro-mechanical type of motor protection relay

minutes. If TNB power supply is found to be stable, the standby generator will be stopped.

ix.

All motor starters shall be provided with phasing relay complete with miniature circuit breaker (MCB).


6-3


x.

iii.

The entire autotransformer and rotor resistance bank complete with

kW shall be squirrel cage motor with autotransformer starter.

thermistors shall be installed at the top compartment of the switchboard and iv.

within the same vertical module of switchboard housing the motor circuit. xi.

Motor of more than 10 horsepower/ 7.5 kW and less than 150 horse power/ 110 Motor of 150 horse power/ 110 kilowatt and above shall be squirrel cage motor with variable speed drives (VSD) or slip rings motor with rotor resistance starter.

The main earth chamber shall be painted in red colour and proposed brand used shall be subject to SYABAS approval.

xii.

b.

The motor can be operated via local manual control mode, automatic control or

other electrical power consumers.

remote control mode via SCADA/ Telemetry system. xiii.

In any case, the operation/ starting of a motor shall not have any undesirable effect to

The automatic operation shall be controlled by the level of water in the suction and elevated service reservoir/ tank, floatless relay and control relays at the motor control centre and 3-CORE (copper) PVC/ SWA/ PVC under ground cable from the

6.9

INTERNAL LIGHTING AND POWER

pumping station to the service reservoir/ tank inclusive of cable marker and cable joint pillar following the cable route along the pumping mains. If the elevated

a.

board having a current operated Residual Current Device (RCD) and main switch. The

service reservoir/ tank is located outside the compound from pumping

Residual Current Device (RCD) shall be separated for lighting and power (switch

stations, a controller coupled with GSM/ GPRS (SMS) system equivalent to

socket outlet). The sensitivity of the RCD shall comply with the latest Suruhanjaya

SYABAS standards shall be provided. This shall be an independent system

Tenaga’s requirements on various applications.

from the current telemetry system. xiv.

Cable for automatic operation shall be of 2.5 mm2 or above and insulation

General lighting and power inside the pumping station shall be fed from a distribution

b.

The proposed lighting fitting and illumination level for the common area are given in Table 6.1.

shall be above 10M ohm. c.

Control of lighting for the different areas shall be achieved by the following methods

xv.

All electrode sets shall be of 13 mm diameter and stainless steel make.

xvi.

The starter shall have a protection timer incorporated in the starting sequence.

depending on areas and usage:-

xvii.

The control circuit shall be prepared by the electrical consulting engineer.

i.

Partitioned areas - Individual switch

xviii.

All indicator lights shall be of LED type.

ii.

Open areas

xix.

Power factor shall be corrected to not less than 0.90 lagging.

xx.

All capacitor bank shall be rated at 525 V and each of the capacitor shall be protected by fast reacting reactors.

xxi.

All outgoing cables to motor shall be armoured type and shall be laid in

- Switch centre

d.

Lighting circuits shall be arranged in alternating circuits.

e.

The proposed types of light fittings for the different areas are as per Table 6.2.

f.

Maintained exit lights (“KELUAR” SIGN) and self-contained emergency lights of fluorescent type with minimum three hours of battery (rechargeable) reserve shall

trench or concealed in G.I. conduits on floor slab.

be provided for all areas in accordance with the BOMBA requirements and UBBL. g. 6.8

ELECTRIC MOTORS a.

“KELUAR” sign complete with arrow sign showing the exit direction shall be provided where appropriate.

h.

Sufficient power points of suitable types and ratings shall be provided to serve the intended usage of the areas or rooms and for all equipment and plants to be

All motors shall be of the induction type as specified below:-

installed including power points for all mechanical equipment’s requirements. i.

All motors shall use High Efficiency Motor (EFF1 CEMEP-EU standard), Class 1.

ii.

Motor up to 10 horsepower/ 7.5 kW shall be of squirrel cage motor with

i.

Each equipment shall have its own power point and two (2) equipment shall not share the same power point. Additional 13A switch socket outlets shall be provided for general use in all areas.

direct-on line starter.


6-4


6.10

SCADA/ telemetry systems are protected against lightning surges complying with

EXTERNAL LIGHTING INSTALLATIONS

Zone 1 Protection as defined in IEC 61643-12. a.

h.

External compound/ street lighting shall be provided for the compound and internal

All down conductors shall be concealed within building structures.

roads within the compound of the works. The compound/ street lighting shall be mounted on 5 m high concrete poles. Wall mounted light fittings shall be used where pole mounted light fittings are not suitable. Generally, the spacing between

6.12

EARTHING SYSTEMS

the poles shall not exceed three times the mounting height of the pole. The lamps a.

for the light fittings shall be of SON/ energy saving type or equivalent. The

b.

Earthing system shall comprise several sets of earth electrodes, earth clamps,

illumination level on the ground/ road surface shall not be less than 15 lux

couplings, copper tape or bare stranded G.I. cable and concrete and precast earth

requirement.

chambers. More elaborate measures shall be proposed if earth resistance value

Area floodlighting shall be provided where necessary and SON type of floodlighting

could not be achieved. b.

shall be provided with the average of 30 lux requirement.

An equipotential earthing system shall be provided to prevent dangerous voltage

c.

Suitable path lighting with SL or PL lamps shall be provided in the walk paths.

rise between different earthing systems. This involves tying together the various

d.

All linkways and covered walkways shall be illuminated using tamper proof

earthing systems for electrical, lightning protection, telecommunication and the

luminaries with the average of 30 lux requirement.

building structure. All service metallic pipes and exposed metallic protrusions on

Control of these various lighting systems shall be by local relays, time switches and

the building shall be earthed together.

e.

c.

photocells complete with contactors. Override facilities shall also be provided.

Earth resistance for electrical earth, electronic and telecommunication (clean) earth shall be of 1 ohm or less (separately measured for each system before interconnection).

6.11

d.

LIGHTNING AND SURGE PROTECTION SYSTEMS a.

Lightning protection system shall be provided for pumping stations, service reservoir/ tank and suction reservoir/ tank.

b.

d.

6.13

ELECTRICAL SPARE PARTS

Lightning protection system for the building shall be Faraday cage type to MS-IEC 61024-1 requirements. Other lightning protection system shall be subject to

c.

Earth resistance value for lightning protection system shall not exceed 5 ohms.

a.

Developers/ Contractors are required to provide the following electrical tools and spare

SYABAS approval.

parts:-

For metal roofing, the metal structure shall be exothermically bonded with copper

i.

One (1) set of tools complete with box spanner.

tape or bare stranded G.I. cable, otherwise roof conductors shall be installed.

ii.

One (1) no. of digital insulation tester complete with test cable, LED

The system shall comprise down conductors, non-radioactive air terminals, fixing, bonding, jointing, test clamps, earth clamps, earth electrodes, concrete and precast

numerical display and keypad. iii.

earth chambers, etc. e.

display and keypad with reading for voltage (V), amperes (A), frequency (Hz),

All exposed metallic protrusions on building shall be connected to the lightning protection system.

f.

Earth resistance value for lightning protection system shall not exceed 5 ohms.

g.

Lightning surge protection devices shall be provided for all power and data lines to ensure all equipment inside computer rooms, network equipment rooms and


One (1) no. of power analyzer complete with test cable, LED numerical power factor, capacitance, resistance, inductance, power (W) and VARs.

iv.

One (1) no. of digital clamp meter complete with test cable, LED numerical display and keypad.

v.

One (1) no. of digital leakage clamp meter complete with test cable, LED numerical display and keypad.

6-5


vi.

One (1) no. of digital earth tester complete with test cable, earth rod, LED

6.15

TESTING AND COMMISSIONING

numerical display and keypad. vii. viii.

One (1) no. of digital vibration meter complete with test cable, LED numerical

Two (2) sets of the testing and commissioning records and results that are endorsed by a

display and keypad.

qualified and competent personnel shall be in accordance with all Standards, Code of

One (1) no. of digital tachometer complete with test cable, LED numerical

Practice, Rules and Regulations and forwarded to SYABAS.

display and keypad. ix.

One (1) no. of auto system controller with GSM module (for pumping station using GSM based controller only).

6.16

All proposed brands for spare parts shall be subject to SYABAS approval. b.

Pumps with variable drives should be used to achieve energy saving whenever applicable and subject to SYABAS approval. Sufficient details shall be submitted to SYABAS for

For HT installations, the following electrical spare parts shall be provided:i.

VARIABLE SPEED DRIVE (VSD) PUMPING SYSTEM

consideration. A standby generator set shall be provided to cater for load of the VSDs One (1) no. of Vacuum Circuit Breaker (VCB) of the highest rating in the

installed.

installation. ii.

One (1) no. of Air Circuit Breaker (ACB) of the highest rating in the installation.

iii.

One (1) set of contactors for all steps.

iv.

One (1) HRC fuse of the highest rating in the installation.

6.17

CHECKLIST The checklist shall be completed and endorsed by consulting engineer and shall be attached together with the submission document. The design checklist of Electrical System for Pumping Station is shown in APPENDIX C.

6.14

ELECTRICAL AS-BUILT FITTED DRAWINGS a.

All electrical drawings shall be of A1 size and endorsed by electrical consulting engineer.

b.

Three (3) sets of electrical drawings and electrical load calculations and three (3) sets of key plan shall be provided and endorsed by the electrical consulting engineer on behalf of the Developers/ Contractors where:-

c.

i.

One (1) set shall be framed and hung in the pumping station.

ii.

One (1) set shall be submitted to SYABAS Headquarters.

iii.

One (1) set shall be submitted to SYABAS District Office.

Three (3) sets of Operation and Maintenance Manual shall be provided by the electrical consulting engineer on behalf of the Developers/ Contractors where:i.

One (1) set shall be kept in the pumping station and located at a wall mounted rack.

ii.

One (1) set shall be submitted to SYABAS Headquarters.

iii.

One (1) set shall be submitted to SYABAS District Office.


6-6


Table 6.1 : Proposed lighting fitting and illumination level Maintained Average Illuminance (lux)

Area Office/ Computer Rooms

400

Store

200

M&E Plant rooms and Pumping station

250

Internal Corridors

100

Toilets

150

Table 6.2 : Proposed type of light fitting Area

Type of Light Fittings

Office/ Computer Rooms

Fluorescent light fittings with aluminium reflector (Prefably using 36 W lamps)

Store

Bare channel fluorescent light fittings

M&E Plant rooms and Pumping station

a. 5 m height and above – low bay metal halide (corrosion resistance type) b. Less than 5 m – wall mounted fluorescent light fittings complete with metal reflector

Internal Corridors

Fluorescent light fittings with aluminium reflector (Prefably using 36 W lamps)

Toilets

Compact Fluorescent Downlights


6-7


7.0

MECHANICAL SYSTEM

7.1

GENERAL

7.2.1

First Stage (Design Stage Before Tender Award) a.

Approval letter from SYABAS’ Development Department for the detailed design of civil works.

Generally in the selection of mechanical equipment, the following requirements shall be met:a.

General arrangement drawings of pumping installation.

c.

General layout drawings of surge vessel (size to be determined after surge analysis

The facilities shall perform the essential functions required, with high degree of safety and

is carried out). d.

reliability. b.

b.

Design calculation for pumping system which shall include the pump curves,

The mechanical facilities shall be determined after weighing the merits and demerits of the

system curves, pumping head calculation and sizing of suction pipe and pumping

system as a whole.

mains.

c.

Pump facilities shall be of the highest degree of efficiency.

d.

Mechanical equipment selected shall have a high degree of serviceability and suitable for

e.

Pump and prime mover details.

local use taking into consideration local capability to operate and maintain. e.

Protective and safety devices shall be interlocked such that in times of failure of one part

7.2.2

Second Stage (After Tender Award during Approval Stage of Equipment)

of the system, the system shall not operate thus preventing further damage to the rest of the system. f.

Submissions shall comprise the following items:-

Vibration and noise levels produced by the mechanical equipment in operation shall be as per DOE requirement.

g.

a.

Full details of equipment offered or proposed and copies of manufacturer’s specifications to enable the nature, quality and workmanship of the equipment offered to be assessed.

Life cycle cost of the mechanical equipment shall be considered. b.

Characteristic curves for the pump offered running individually showing the relationship between head, discharge, horsepower, efficiency, Net Positive Suction Head (NPSH)

7.2

required and the system curves.

DETAILED DESIGN SUBMISSIONS c.

Duty point and efficiency.

Submission by the consulting engineer to SYABAS for approval shall be done in

d.

The pump, type, brand and detailed construction.

two (2) stages as per Clauses 7.2.1 and 7.2.2.

e.

The prime mover.

The submission requirements shall be as per Clause 3.3. All submission shall be

f.

Pump accessories.

endorsed by the consulting engineer.

g.

Pipework and valves, materials and sizes.

c.


h.

Surge protection system complete with surge analysis calculation.

d.

All drawings shall be endorsed with the word “SUBMISSION DRAWING FOR

i.

Mechanical handling equipment.

APPROVAL”.

j.

Fire protection system and equipment.

e.

All drawings shall be approved before any work is allowed to commence.

k.

Proposed spare parts and tools to details.

f.

All fire prevention system shall be as per BOMBA requirement.

l.

Shop drawings.

a. b.


7-1


7.3

PLANNED WATER QUANTITY AND NUMBER OF PUMP UNITS

7.4

PUMPSETS

Generally, the planned water quantity and the number of pump units required shall be determined

7.4.1

Duties and Selection

according to the following criteria:a.

For treated water pumps, the capacity shall be the maximum daily delivered quantity

a.

Electric driven pumps shall operate at below 1500 rpm.

b.

The pump shall have a stable characteristic such that the pressure falls steeply and continuously from closed valve position.

and not the average daily quantity. b.

For distribution pump, planned distribution quantity shall be the basis.

c.

The number of pumps required shall be determined by the planned quantity of water and

c.

The duty point of the pump supplied shall lie within a range of 20% less to 10% more than the pump capacity of the best efficiency point for the particular impeller offered.

other criteria such as installation cost, conditions of operation and maintenance, power consumption and factor of the safety desired. d.

For economic operation, it is advisable to use a single duty pump, operate constantly near

7.4.2

Horizontal Split Casing Pumps

the point of efficiency. Larger pumps normally have better efficiency. e.

In the design of a pumping system, pumps shall not operate more than twelve (12) hours

a.

continuously in a day. This is distinct from the criteria for determining the rating of the duty

ball or roller bearings with suitable lubricating arrangements. b.

pump to produce the planned daily quantity. f.

The total pumping head shall not exceed 75 m at 2800 m3/hr for each pumping stage.

g.

Standby pumps shall be provided in accordance with the design criteria for pump sets

The pump shall be supplied with all necessary air release valves, drain valves, suction and delivery gauge mounting points.

c.

given in Table 7.1. The number of standby pumps depends on the size of duty pump, the h.

The pump shall be of axially split cast iron casings and high tensile steel shafts running on

The pump shall be supplied complete with combined base plates and approved type of flexible couplings.

locality of the installation and factor of the safety desired.

d.

The combined base plate shall be fabricated according to the manufacturer’s instruction.

In the case where water demand fluctuates widely such as the in-line booster distribution

e.

The combined base plate and stool shall be supplied complete with all necessary holding

system, it is advisable to have a combination of different size pumps or variable speed

bolts and lifting points.

pumps. i.

All pumps with power of 22.5 kW or 30.0 water horsepower and above shall be Horizontal Split Casing Pumps with pump speed of not more than 1500 rpm.

j.

7.4.3

End Suction Pumps

All pumps with power below 22.5 kW or 30.0 water horsepower shall be either

k.

Horizontal Split Casing Pumps with pump speed of not more than 1500 rpm or End

A spacer piece shall be provided and coupling to facilitate removal of impeller without dismantling

Suction Pumps with pump speed of not more than 2900 rpm approved by SYABAS.

the connecting pipeworks.

The minimum Factor of Safety (FS) in sizing of motors shall be 1.1 of the motor power.

l.

All pumps, parts and accessories shall comply with international standards, ISO, and/ or SIRIM standards and shall be manufactured and supplied from a

7.4.4

Pump Casing, Rotating Element, Driving Coupling, Gland Sealing and Other Pump Accessories

manufacturer approved by SYABAS. a.

Pump Casing i.

The pump casing shall be of volute from superior casting material or cast iron with close grain conforming BS EN 1561.


7-2


ii.

The pump casing shall withstand twice the maximum shut off pressure of the

d.

Pump Accessories

pumps. iii.

i.

The rotating element shall consist of a balance corrosion resistant high tensile steel shaft, keyed on to the impeller or impellers.

Coupling •

Drive shall be transmitted from the driving unit to the pump by matched flexible coupling unit.

b.

•

Rotating Element i. ii.

The coupling system shall be strong, robust and flexible to accommodate parallel, angular and vertical misalignment.

All impellers, neck rings, sleeves, gland, lantern ring and bushes shall be of zinc-

•

The rubber shall be able to absorb shock to reduce vibration and torsion

free bronze or stainless steel.

oscillation and shall be able to withstand ambient temperature up to 50 deg.

The rotating element shall be carried in deep grove ball bearings on split bush

C.

journal bearings in which ball thrust bearing or thrust disc and nuts are provided to ii.

restrict axial movement. iii.

Bush bearings shall be manufactured in plain leaded bronze or in bronze lined with

Bolt and Nuts •

metal normally apply to low speed, low heads pumps. iv.

All exposed bolts and nuts used in the construction for the pump shall be cadmium treated or zincified.

Diametrical clearance shall be between 0.250 mm to 0.300 mm.

•

If normal mild steel bolts and nuts are used they shall be protected from rust by chemical treatment or protective caps.

c.

iii.

Gland Sealing i.

Gland sealing shall be of silicon carbide or tungsten carbide mechanical seals

Vibration Isolation Material •

The pump sets shall be provided with vibration isolation such as rubber

unless otherwise specified.

damper between pump set and pump plinth, coupling for the suction pipe

ii.

The mechanical seals shall be manufactured to BS ISO 3069.

and expansion joints for the delivery pipes.

iii.

They shall be maintenance free and suitable for use in treated water.

iv.

The rotary and stationary seal housing shall be corrosion resistant while the

structural steel base shall be used for pumps with power smaller than

secondary seals shall be highly chemical and thermal resistant.

4 kW whereas steel springs and concrete inertia base shall be used for

All seal surfaces shall be able to withstand up to one and half times its working

pumps with power larger than 4 kW.

v.

•

pressure, temperature of 200 deg. C and velocity of 20 m/s. vi.

•

For pumps which are sited on ground, Neoprene/ rubber mount and

For pumps which are sited on suspended floor slab, steel springs and concrete inertia base shall be used.

For certain applications where mechanical seal is not available, the gland packing may be used with the approval of SYABAS.

vii.

The packing shall be non-asbestos type. It shall be organic fibre based impregnated with PTFE as lubricant.

7.5

PRESSURE GAUGES

viii.

It shall be able to prevent damage on sleeve/ shaft and leakage due to penetration.

ix.

It shall be suitable for use in centrifugal pump handling water containing debris and

a.

The gauge construction shall comply with BS EN 837-1 and ISO Certification.

sand.

b.

The gauge used shall be of liquid filled type.

c.

The entire gauge shall be calibrated either in single scale unit in METRE/WATER or dual scale unit in METRE/WATER and FEET/WATER.


7-3


d.

iii.

The dial of gauge shall not be less than 150 mm in diameter for pumping capacity of below 300 m³/hr and 250 mm in diameter for pumping capacity of above 300 m³/hr.

e.

Overload Protector (For pump discharge side) •

The range of suction pressure gauge shall generally be between 0 m to 20 m head of

from over pressure, exceeding the specified pressure range by

water and the range of delivery pressure gauge shall be between 0 m to 100 m head

sudden and excessive pressure fluctuation from surge or spike.

of water. f.

The gauge shall have a micrometer zero adjustable pointer and restrictor screw.

g.

The over pressure limit shall not be less than 1.30 x f.s.d.

h.

The accuracy shall be +/- 1% f.s.d or better according to BS EN 837-1.

i.

The gauge shall be able to withstand up to 200 deg. C of process temperature and

•

The compound gauge shall be installed when measuring suction pressure.

k.

The dial shall be of printed wetted materials and of high accuracy.

l.

Suitable gauge shall be selected such that the working pressure is at the middle of

exceeding the allowable pressure, until it comes back to normal, when system pressure becomes normal. Hence this device safeguards the pressure instrument gauge. •

The operating pressure shall not exceed 70% of the full scale dial.

n.

The gauge shall be installed with all the necessary accessories to protect the gauge as per below:i.

•

The overload protector shall be of piston type with adjustable setting range.

•

7.6

The overload protector shall be of ISO certification.

SUCTION AND DELIVERY PIPES

Snubber •

The purpose of snubber is to protect the gauge against sudden pressure change and fluctuation of pressurized fluid.

•

The snubber shall be of a large surface area snubbing element with special design for water application.

•

•

The criteria to be considered when designing suction and delivery pipe are as follows:a.

Suction pipe shall be as short as possible.

b.

Bends shall be avoided if possible.

c.

The minimum length of straight pipe before the suction intake of pump shall be at

The snubber shall be of ANSI 316 Stainless Steel housing with SS316 porous metal filter disc or needle dampener.

ii.

The material overload protector shall be of ANSI 316 Stainless Steel body with gasket.

the range. m.

For pumping pressure of above 75 m, a pressure gauge shall be installed with overload protector devices to block the surge pressure

65 deg. C of ambient temperature. j.

Overload protector shall be designed to protect pressure instrument

least 5 times the diameter of the suction pipe. d.

The snubber shall be of ISO certification.

Instrument Isolating Valve (Needle Type)

The depth between the low surface of the pipe chamber and the end of the suction pipe shall be more than one and a half (1½) times of the pipe diameter.

e.

The depth between the end of suction pipe or strainer and the bottom of pump chamber shall respectively be a minimum of 0.5 to 0.8 times the pipe diameter.

•

The instrument isolating valve for the gauge shall be of needle type,

f.

which can be used to throttle pulsation, provide precision flow control and as a stop valve. •

than one and a half (1½) times the pipe diameter. g.

The instrument isolating valve shall be able to withstand operating pressure of 280 m head of water or higher.

The distance between the suction pipe and the wall of the pump chamber shall be more The distance between the adjacent suction pipes in the case of equal pipe diameter shall be more than three (3) times the pipe diameter.

h.

For suction pipes with different diameters, the distance shall be more than three (3) times the largest diameter.

i.

When sizing the suction and delivery pipes, the velocity shall not be greater than 1.5 m/s and 2.5 m/s respectively.


7-4


7.7

PIPEWORKS a.

7.8.3

All pipes and specials shall be of mild steel conforming to MS 708 or ductile iron

Non-slam Type Check Valves and Surge Calculation a.

conforming to BS EN 545. b.

General The non-slam check valve shall conform to BS EN 593 and shall be with high operating

All mild steel pipes and specials shall be painted with one (1) layer of zinc chromate

reliability and minimum pressure losses.

and two (2) layers of gloss finish coating while ductile iron pipes and specials shall b.

be painted with two (2) layers of gloss paint. c.

All mild steel pipes shall be lined internally with concrete.

d.

All pipes shall be flange jointed, machined and drilled conforming to BS EN 1092-3.

e.

Flanged items shall be supplied complete with bolts, nuts and jointing materials.

Design and Finish i.

The non-slam type check valve shall be designed to be of short stroke, shock free closure and can be installed in any position i.e. horizontal, vertical or inclined.

ii.

The check valve shall also be designed such that the minimum cross-sectional area at the four most critical points shall be greater or equal to cross sectional area of the pipe.

7.8

VALVES

7.8.1

Sluice Valves

iii.

The check valve shall be used for automatic operation by the use of a direct spring loaded closing element.

iv.

The valve shall be with metal to metal seat and shall operate with minimum wearing parts and minimum maintenance.

a.

Sluice valve shall conform to the requirements of BS 5163 and the closing direction shall

v.

be of clockwise closing. b.

shall be flanged and drilled conforming to BS EN 1092-3.

The valve shall be fitted with hand wheels with the direction of opening and closing cast c.

marked thereon. c.

Sluice valves in pumping station shall only be used for pipe sizes of 250 mm diameter and

Surge Simulation i.

below. d.

The valve shall be designed with flow diffuser to minimize pressure losses and

A surge simulation shall be performed on the pumping system to determine the variations of pressure in the surge vessel and along the pipeline profile.

Sluice valve shall be fully designed for pressure rating of PN 16.

ii.

The surge simulation shall include the behaviour of the air volume and pressure in the surge vessel after incorporating the check valves.

7.8.2

Butterfly Valves 7.8.4 a.

Altitude Valves

All butterfly valves shall conform to the requirements of BS EN 593 and shall be used for pipe sizes above 250 mm diameter.

b.

The butterfly valve shall be fully designed for pressure rating of PN 16.

c.

For butterfly valve without motorized gear, a suitable hand wheel for headstock shall be

a.

Altitude valve controls the level of a tank. It remains open when the tank is not full and it will close when the tank reaches its maximum level.

b.

Strainer shall be installed before any altitude valve.

provided.


7-5


7.9

SURGE SUPPRESSION SYSTEMS a.

To counter water hammer, the following methods shall be used in pumping stations:i.

Pressurized surge vessel to prevent column separation and taking into account of

c.

One (1) set of Mechanical Seal.

d.

One (1) set of Impeller.

e.

One (1) set of Shaft.

f.

One (1) set of Shaft Sleeve and Lock Nut (if gland packing is used).

check valve. ii.

Surge anticipating valves which open or closed at some preset values or 7.12

mechanism which lower surge pressure in the pipeline. b.

Manufacturers are required to submit complete sets of drawings, calculations and

VARIABLE SPEED DRIVE (VSD) PUMPING SYSTEM Please refer to Clause 6.16.

etc. to DOSH for approval. c.

A set of surge suppression system, air compressor, design calculation, drawing and test certificate shall be provided together in the handing over manuals.

d.

7.13

Pumps tested at site and under controlled condition at factory shall conform to BS EN ISO 5198.

e.

CHECKLIST The checklist shall be completed and endorsed by consulting engineer and shall be

3

Witness testing is required for pumps with flow rate of larger than 760 m /hr.

attached together with the submission document. The design checklist of Mechanical System for Pumping Station is shown in APPENDIX C.

7.10

MECHANICAL HANDLING EQUIPMENT a.

Gantry crane handling equipment shall be used for load exceeding 50 kg.

b.

Monorail cranes shall be used for lighter load and when the centre line of the equipment is in line with the entry or exit.

c.

All cranes shall be suitably sized to lift 1.25 times the weight of the heaviest equipment.

d.

Electrically operated crane shall be required in large installation where individual equipment weight is more than 100 kg.

e.

All electric driven fully motorized cranes shall be tested and approved by DOSH before testing upon installation and handing over to SYABAS.

f.

Manufacturers shall endorse and provides all application for these purposes.

g.

Drawings, calculation and certificate shall be handed over to SYABAS during the first inspection for handing over.

7.11

MECHANICAL SPARE PARTS Developers are required to provide mechanical spare parts as follows:a.

One (1) set of repair kit for Altitude Control Valve.

b.

One (1) set of repair kit for Surge Anticipating Valve.


7-6


Table 7.1 : Design criteria for pump sets Pumping Rate Per Pump (m³/hr)

Number of Pump sets

Total

Maximum Pumping Hours

Minimum Efficiency (%)

Maximum Maximum Speed (rpm) Pumping Horizontal End Head Split Casing Suction (m) Pumps Pumps

Below 400

On Duty = 1 Standby = 1

2

12

75

75

1,500

2,900

400-2800


4

12

75

75

1,500

-

Above 2800


6

12

80

75

Not more than 1,000

-

Notes: a.

Duty pump is the primary pump used for continuous operation at maximum of twelve (12) hours a day.

b.

Standby pump is an extra-connected pump used to alternate or serve as duty pump in case of any duty pump fails.

c.

All pumps shall be installed to operate under positive suction head.


7-7


8.0

SCADA/ TELEMETRY SYSTEM

8.1

GENERAL

8.2.2

Outstations a.

The outstation equipment shall be provided in dust proof, industrial type fiberrein forced-polyester enclosures to IP66 for both indoor and outdoor installations.

a.

All detailed drawings for RC chambers and covers for flow and pressure transmitters shall

All outstation equipment including the GSM modem, antennae and back-up power

be submitted to SYABAS for approval prior to construction. All chambers shall not be

batteries shall be installed within the enclosure and not externally. b.

water logged. b.

The outstation equipment furnished shall be designed for installation in a dusty,

All cables (power and signal) laying, cable protective covers, cable route markers and

humid and tropical environment and shall operate satisfactorily in temperatures

cable joint pillars (for underground cable joint, if any) shall be in accordance with SYABAS

between 5 deg. C and 70 deg. C and up to 95% relative humidity assuming

requirements. All underground cables shall be of Steel Wire Armoured (SWA) type.

no condensation will occur. Each remote outstation shall be an RTU, stand alone

c.

All earthing points shall be of 1 ohm or less.

unit capable of performing data acquisition and control, independent of the

d.

All equipment and instrumentation requirements and specifications mentioned above and

master station. Each outstation shall be provided with the required number of

works carried out later shall comply with SYABAS requirements.

inputs and outputs subject to SYABAS approval.

e. f.

c.

All testing, commissioning and calibration of telemetry system shall be carried out

All inputs shall be time-tagged and transmitted to the master station. The time-tag

by authorised supplier/ SYABAS.

shall be the actual time of event and its accuracy and resolution shall be within 1

All reservoirs/ tanks shall be telemetered.

second. d.

Reservoir outstations shall communicate with the master station via a GPRS communication link. In the event of GPRS connectivity failure, the reservoir

8.2

outstations shall be able to send SMS to the Master Station and/or the respective

HARDWARE REQUIREMENTS

pump house outstation. The outstation RTUs shall come with report-by-exception 8.2.1

General a.

(RBE) feature where only data from I/O points that have experienced a change in status shall be reported back to the master station. For analogue input points,

The equipment supplied shall be of the latest available solid-state design using

the user shall be able to set the percentage of change in the measured parameter

field proven techniques and capable of giving satisfactory performance under the

that represents a change in status for reporting to the master station.

specified ambient conditions without the benefit of air-conditioning. b.

e.

The system shall be modular in concept leading to a system that is easily expanded,

Each outstation shall include standard software, transparent to the operator, to automatically start up the communication system and self-document any

modified or reconfigured. The system shall be expandable in order to cope

reconfiguration updates. The configurations stored in any RTU shall be up-loadable

with the envisaged future requirements. The addition of outstations or MMIs in

and viewed on a Pocket PC or Notebook PC.

future shall be carried out without taking the system out of service and shall not jeopardize the continuous working of the rest of the system. c.

The system shall be designed for continuous fail-safe operation with minimum amount of maintenance. Failure in any part of the system shall be localized to that part only and shall not cause damage to other parts of the system.

8.2.3

Remote Terminal Units Remote Terminal Units (RTUs) shall be provided in the outstations in accordance with the specification requirements and drawings. Each type of RTU provided for the scheme shall be from the same manufacturer to provide standardization and interchangeability of equipment. Two (2) types of RTU shall be used for different type of function.


8-1


a.

b.

Type 1 - designed for installations at remote sites without permanent AC power supply source,

b.

In the event of GPRS connectivity failure, the data must be recorded, compressed and sent back to the Master Station via SMS at 4 hour interval. Regardless of the

Type 2 - designed for installations at pump houses and any remote sites that

failure of GPRS, all critical alarms shall be sent back in real time via SMS to the

require an expandable feature such as video surveillance features, door

respective parties as specified by SYABAS.

access system and many more.

8.2.4

8.4

OPERATION REQUIREMENTS ON SCADA SYSTEM

8.4.1

Introduction

GPRS/ GSM Modem a.

A GPRS/ GSM modem shall be provided at each of the outstations for data communication. The modems shall come with dual band feature and be designed

a.

purposes via GPRS network.

for data, fax SMS and voice applications. The modems shall be compliant with GSM phase 2/2+ and allow control via AT commands. The modems shall support

b.

the SCADA Master Station (Command Centre) and shall relay back, the signal to the

temperatures up to 55 deg. C. Modem at master station shall be configured to

Motor Control Centre (MCC) to stop the pump.

send SMS to the selected authorized personnel and must be ready to receive SMS c.

pump to start. If the suction tank level is below the low level, pump shall not be

The outstations shall have a continuous GPRS link with the master station and

able to start until it reaches the pre determined level.

upload any status change data to the master station. The master station shall not have to poll the outstations for data.

Upon detection of reservoir low level, system shall check the level of suction tank and other existing pumpset protection parameters before MCC could instruct the

communicate with broadband connection at the master station. b.

Level shall be the primary parameter to start and stop the pump. High level signal generated by the level sensor at the reservoir shall be transmitted by the RTU to

MS Class B and GPRS class 8 for data transfer and be suitable to operate in

from existing metering zone sites. Modems at outstation shall be able to

Local RTU shall transmit all the required data either controlling or monitoring

d.

The software generated alarms on the reservoirs level shall be provided to alert the system remotely at SCADA and the authorized personnel for their further remedial action. At all times, pumps shall be automatically operated via SCADA

8.2.5

system at the Command Centre.

Video Cameras e. Video cameras shall be installed at selected outstation sites for video surveillance

Operations shall be able to be carried out in three (3) modes:i.

Remote/ Auto

subject to SYABAS requirements In this mode, command send by the SCADA system at Command Centre shall be able to control the start/stop of the pump(s) automatically. 8.3

COMMUNICATION SYSTEMS a.

Outstations RTU must be configured to use GPRS as a primary link to communicate with master station and must be able to switch to SMS mode in the event of GPRS connectivity failure. All outstations must be able to be controlled by master station.

ii.

Remote/ Manual In this mode, Command Centre can control and manipulate the pumps operation. Based on the monitored level, the authorized personnel shall be able to send a signal to the respective RTU which shall be able to relay the signal to start/ stop the pump(s).


8-2


iii.

f.

Local/ Manual

A 25 mm diameter full bore tapping complete with ball valve at scour pipe shall be provided before scour valve.

By selecting this mode, operator at the pump house shall be able to start/ stop the pump by pushing the start/stop button at the Motor Control Centre (MCC). However, emergency stop button provided locally adjacent to the pumps shall override the command at the MCC and SCADA MMI at

8.4.3

Pumping Stations

any time, in any mode. a.

One (1) no. magnetic flow meter with transmitter complete with two (2) nos. lightning surge arrestor shall be provided in RC chambers at the delivery pipes. The

8.4.2

flow meter shall be provided with a 25 mm dia. full bore tapping complete with ball

Suction Reservoirs and Suction Tanks

valve. All instruments shall be housed in floor mounted weatherproof metal cabinet (in a.

accordance with attached SYABAS’ Standard Drawings) complete with high quality

One (1) no. pressure transmitter complete with pressure gauge and lightning surge

stainless steel padlock. Cable used shall be of 4C 2.5 mm2 PVC armoured copper cables

arrestor shall be provided in RC chamber at the inlet pipe. The instrument shall be housed

(power and signal with 2 pairs of spare cables). An earthing system of less than 1 ohm

in floor mounted weatherproof metal cabinet (in accordance with attached SYABAS’

shall be provided.

Standard Drawings) complete with high quality stainless steel padlock. Cable used shall be of 4C 2.5 mm2 PVC armoured copper cable (power and signal). An earthing

b.

diagram, one (1) no. RTU GSM System, time switch with contactor, all lightning surge

system of less than 1 ohm shall be provided. b.

arrestors, standby power supply system, relays, alarm annunciator, digital indicator, digital

One (1) no. level instrument ultrasonic transmitter complete with lightning surge

clock, indicating lights, siren and high quality stainless steel padlock shall be provided

arrestor shall be provided at the suction reservoir/ tank. The instrument shall be housed in

(cubicle and schematic diagrams of the instrumentation/ RTU panel shall be in

floor mounted weatherproof metal cabinet (in accordance with attached SYABAS’

accordance with attached SYABAS’ Standard Drawings). An earthing system of less

Standard Drawings) complete with high quality stainless steel padlock. Cable used

than 1 ohm shall be provided.

shall be of 4C 2.5 mm2 PVC armoured copper cable (power and signal). An earthing system of less than 1 ohm shall be provided. c.

c.

arrestor shall be provided in RC chamber at the pumping main. The instrument shall

stainless steel electrodes mounted or stainless steel bracket (in accordance with

be housed in floor mounted weatherproof metal cabinet (in accordance with

attached SYABAS’ Standard Drawings), floatless relay and auxiliary relay shall be

attached SYABAS’ Standard Drawings) complete with high quality stainless steel. Cable used shall be of 4C 2.5 mm2 PVC armoured copper cable (power and signal). An earthing system of less than 1 ohm shall be provided. A display shall be

and signal) shall be used. Overflow detection will give an alarm upon detecting a

provided at instrumentation panel from this sensor to indicate the pumping

dangerous high level. An accuracy checker will compare the reading at level sensor

pressure when the pump is running. The signal will be converted to water level in

against a fixed level water point in the suction tank. Accuracy of error shall be not

the high reservoir/ tank when the pump stops.

more than 2%. Copper tape or bare stranded G.I. cable complete with concrete earthing chamber shall

d.

inside slab/ wall, etc. Earthing system of less than 1 ohm shall be provided.

Local controls, automatic controls and remote controls for motors shall be provided via SCADA system.

be used for external lightning protection system. All installation shall be concealed e.

One (1) no. pressure transmitter complete with pressure gauge and lightning surge

Overflow detection system and level instrument accuracy checker complete with

provided at overflow chamber to detect overflow. Armoured type of copper cable (power

d.

A floor standing instrumentation/ Remote Terminal Unit (RTU) panel complete with mimic

e.

The pump house outstation shall also perform pump cycling operations. After a

A 600 mm diameter stainless steel wire type of mechanical dial indicator shall be

particular pump has been on duty for a certain accumulated period, the outstation

provided. The range shall be of 0 - 15 m.

shall stop the pump and designate the next pump as the duty pump. The duty cycle


8-3


f.

period shall be user-settable via software. The change in status of the pumps shall

A 900 mm diameter stainless steel wire type of mechanical dial indicator shall be provided. The range shall be from 0 - 15 m.

be immediately reported to the master station. g.

Pumping line and scouring line shall be connected by a 25 mm diameter stainless steel pipe.

8.4.4

h.


Three (3) nos. of 25 mm diameter full bore tappings complete with ball type stop valves at pumping line, scouring pipe and one (1) no. in between shall be provided.

a.

i.

One (1) no. magnetic flow meter with transmitter complete with two (2) nos. lightning surge arrestor shall be provided in RC chambers at the outlet pipe. The flow

instruments and equipment on a Report-By-Exception (RBE) basis. This means

meter shall be provided with a 25 mm dia. full bore tapping complete with ball valve.

that the outstation shall only report back to the master station on input/output

All instruments shall be housed in floor mounted weatherproof metal cabinet (in

points that have changed in status. For analogue signals the percentage

accordance with attached SYABAS’ Standard Drawings) complete with high quality

change that represents a change in status shall be user settable.

stainless steel padlock. Cable used shall be of 4C 2.5 mm2 PVC armoured copper

b.

The reservoir outstation shall update the master station on the status of the field

j.

The Master Station in Command Centre shall be configured with high and low

cables (power and signal with 2 pairs of spare cables). An earthing system of less than 1

levels of each ground and elevated reservoir. However, the need for the additional

ohm shall be provided.

level configuration on alarms can be software generated.


k.

Alarms generated shall be able to be viewed by SYABAS Crisis Operation Centre.

arrestor shall be provided at the reservoir/ tank. The instrument shall be housed in floor

l.

If the reservoir outstation is unable to communicate with the master station, it

mounted weatherproof metal cabinet (in accordance with attached SYABAS’ Standard

shall automatically send the signal(s) to the respective pump house outstation to

Drawings) complete with high quality stainless steel padlock. Cable used shall be of

initiate automatic control functions.

2

4C 2.5 mm PVC armoured copper cable (power and signal). An earthing system of less than 1 ohm shall be provided. c.


8.4.5

Telemetry Systems for Gravity Fed Reservoirs and Tanks

stainless steel electrodes mounted or stainless steel bracket (in accordance with attached SYABAS’ Standard Drawings), floatless relay and auxiliary relay shall be

d.

One (1) no. magnetic flow meter with transmitter complete with two (2) nos. lightning


surge arrestor shall be provided in RC chambers at the outlet pipe. The flow meter shall


be installed with a 25 mm dia. full bore tapping complete with ball valve. All

dangerous high level. An accuracy checker will compare the reading at level sensor

instruments shall be housed in floor mounted weatherproof metal cabinet (in accordance

against a fixed level water point in the reservoir. Accuracy of error shall be not more

with attached SYABAS’ Standard Drawings) complete with high quality stainless steel

than 2%.

padlock. Cable used shall be of 4C 2.5 mm2 PVC armoured copper cables (power and

Copper tape or bare stranded G.I. cable complete with concrete earthing chamber shall

signal with 2 pairs of spare cables). An earthing system of less than 1 ohm shall be

be used for external lightning protection system. All installation shall be concealed inside

provided.

slab/ wall, etc. Earthing system of less than 1 ohm shall be provided. e.

a.

b.


An additional one (1) no. RTU GSM system shall be provided at the reservoir/ tank site

arrestor shall be provided. The instrument shall be housed in floor mounted weatherproof

if the reservoir/ tank location is outside the pumping station and suction reservoir/

metal cabinet (in accordance with attached SYABAS’ Standard Drawings) complete

tank compound. The panel shall be installed with high quality stainless steel

with high quality stainless steel padlock. Cable used shall be of 4C 2.5 mm2 PVC

padlock, time switch with contactor, all lightning surge arrestors, standby power

armoured copper cable (power and signal). An earthing system of less than 1 ohm shall

supply system and relays.

be provided.


8-4


c.


8.6

CHECKLIST

stainless steel electrodes mounted or stainless steel bracket (in accordance with attached SYABAS’ Standard Drawings), floatless relay and auxiliary relay shall be

The checklist shall be completed and endorsed by consulting engineer and shall be attached


together with the submission document. The design checklist of Telemetry System is shown in


APPENDIX C.

dangerous high level. An accuracy checker will compare the reading at level sensor against a fixed level water point in the reservoir/ tank. Accuracy of error shall be not more than 2%. d.

A floor standing instrumentation/ Remote Terminal Unit (RTU) panel complete with mimic diagram, one (1) no. RTU GSM System, time switch with contactor, all lightning surge arrestors, standby power supply system, relays, alarm annunciator, digital indicator, digital clock, indicating lights, siren and high quality stainless steel padlock shall be provided (cubicle and schematic diagrams of the instrumentation/ RTU panel shall be in accordance with attached SYABAS’ Standard Drawings). An earthing system of less than 1 ohm shall be provided.

e.

A 900 mm diameter stainless steel wire type of mechanical dial indicator shall be provided. The range shall be from 0 - 15 m.

f.

One (1) no. pressure transmitter complete with pressure gauge and lightning surge arrestor shall be provided at the incoming in brickwall/ concrete chamber. The instrument shall be housed in floor mounted weatherproof metal cabinet (in accordance with attached SYABAS’ Standard Drawings) complete with high quality stainless steel padlock. Cable used shall be of 4C 2.5 mm2 PVC armoured copper cable (power and signal). An earthing system of less than 1 ohm shall be provided.

8.5

SPARE PARTS The following spare parts shall be provided:a.

Ultrasonic level transmitter

: 1 unit

b.

Category 2 Lightning Protection Unit (LPU)

: 1 unit

c.

Category 3 Lightning Protection Unit (LPU)

: 4 units

d.

Lead acid rechargeable battery

: 2 units

e.

Pressure transmitter

: 1 unit

f.

RTU with built in Programme Logic Controller (PLC) + modem : 1 unit


8-5


9.0

CAPITAL COST CONTRIBUTION (SKP)

b.

Where approval for external water supply system was obtained before the date of 23rd July 2002, the developer would only have to pay the particular SKP (60% of SKP) during

9.1

the stage of meter application.

DEFINITIONS c. Pursuant to the Water Supply (Selangor) (Capital Cost Contribution) Rules 2003, Capital Cost

Plan (external and internal) processing fees will not be charged for application for water supply system made before 23rd of July 2002 .

Contribution or Sumbangan Kos Pembangunan (SKP) is the payment imposed on the developers as a contribution for the development of source works (dams, water treatment plants etc), upgrading of water distribution system and reservoir/ tank. This is an additional cost which has to be borne by developers for the construction and completion of water supply systems for their developments.

9.2

CHARGE RATES Charge rates for SKP are as shown in Table 9.1.

9.3

EXEMPTION FROM CAPITAL COST CONTRIBUTION The following types of development are exempted from payment for SKP:a.

Low cost projects which are fully funded by the State or Federal Government and the National Housing Department

9.4

b.

Place of worship

c.

Social and community buildings

d.

Community centre

e.

Community hall

f.

Village (kampung) house which cost less than RM 25,000.

EFFECTIVE DATE a.

The effective date for the charges is 23rd July 2002. All developments for which the approval for external water supply system was obtained after the date of 23rd July 2002, are subject to the mentioned charges.


9-1


Table 9.1 : Charge rates of Capital Cost Contribution (SKP) for land development in the State of Selangor, the Federal Territories of Kuala Lumpur and Putrajaya.

Types of Premises

Percentage per unit %

Maximum charge for each unit

Apartment Private Low Cost

1/8

RM

75*

Medium Cost (up to RM 150,000)

1/4

RM

300*

High Cost (> RM 150,000 and < RM 300,000)

1/4

RM

500*

Luxurious (> RM 300,000)

1/4

RM

1,500*

Residential Private Low Cost Terrace House

1/8

RM

75*

Medium Cost (up to RM 150,000)

1/4

RM

300*

High Cost (> RM 150,000 and < RM 300,000)

1/4

RM

500*

Luxurious Cost (> RM 300,000)

1/4

RM

1,500*

Semi-detached

1/4

RM

1,500*

Bungalow

1/4

RM

2,500*

Village (kampung) House (> RM 25,000)

1/4

RM

100*

Bungalow

1/4

RM

500*

Service Apartment

1/2

RM

500*

Shop House

1/2

RM

500*

Shop Office

1/2

RM

500*

Linked/ Terraced Factory

1/2

RM

500*

Factory Lot

1/2

RM

500*

Industrial Lot

1/2

RM

500*

Types of Premises

Each Building

Minimum Charge

Hotel/ Private Hospital

0.8Q

RM

1,000

Office building

0.8Q

RM

1,000

Institution/ College/ University

0.8Q

RM

1,000

Factory

0.8Q

RM

1,000

Petrol Pump Station

0.8Q

RM

1,000

Government Quarters

0.6Q

RM

1,000

School/ Clinic/ Medical centre/ District Office

0.6Q

RM

1,000

Hospital/ Government Office Complex

0.6Q

RM

1,000

Hawker Centre/ Market

0.6Q

RM

1,000

Government

- Q = Design water demand per day in gallons

Commercial

* whichever is lower Each Building

Minimum Charge

Commercial Business Complex

0.8Q

RM

1,000

Supermarket

0.8Q

RM

1,000

Shopping Complex

0.8Q

RM

1,000


9-2


10.0

SERVICE CHARGES

Type of Charges

Pursuant to the Water Supply (Selangor) (Charges) Rules 2006, the service charges are as

10.3

shown in Table 10.1. Table 10.1 : Service charges as per Water Supply (Selangor) (Charges) Rules 2006 Type of Charges 10.1

Charge

(a) For connection to main up to 15 mm diameter pipe inclusive cost of ferrule.

RM

75.00

(b) For connection to main of 16 mm up to 20 mm diameter pipe inclusive cost of ferrule.

RM

127.50

(c) For connection to main of 21 mm up to 25 mm diameter pipe inclusive cost of ferrule. (d) For connection to main of pipe exceeding 26 mm diameter.

RM

10.4 225.00

Actual cost plus 25% with a minimum of RM 300.00 10.5

10.2

CHARGES FOR METER TESTS (a) Deposit for testing 15 mm meters or smaller sizes.

RM

22.50

(b) Deposit for testing 16 mm to 20 mm meters.

RM

30.00

(c) Deposit for testing 21 mm to 50 mm meters.

RM

75.00

(d) Deposit for testing 51 mm to 80 mm meters.

RM

150.00

(e) Deposit for testing 81 mm and meter of larger size.

CHARGES FOR CONNECTION TO PUBLIC MAINS

CHARGES FOR DISCONNECTION AND RECONNECTION Charges for disconnection and reconnection on request or where the supply has been cut for default of payment of water charges or for an offence against the provisions of the Water Supply Enactment 1997:-

Charge

Actual cost plus 25% with a minimum of RM 150.00

CHARGES FOR SWIMMING BATH TESTS (a) On granting of the first certificate.

RM

300.00

(b) Renewal certificate of test.

RM

75.00

(a) Testing fee.

RM

250.00

(b) On the granting of the first licence.

RM

200.00

(c) Renewal of licence.

RM

100.00

RM

300.00

CHARGES FOR LICENCES TO CARRY OUT WORK

(a) For meter size below 25 mm (i)

Disconnection for non-payment.

RM

25.00

(ii) Reconnection on payment

RM

25.00

(iii) Disconnection on request and reconnection.

RM

25.00

(iv) Remove plug at communication pipe to restore supply.

Actual cost plus 25%

(b) For meter size above 25 mm (i)

Disconnection of 26 mm to 50 mm meter for non-payment.

RM

75.00

(ii) Reconnection of 26 mm to 50 mm meter on payment.

RM

75.00

(iii) Disconnection of 51 mm to 150 mm meter for non-payment.

RM

150.00

(iv) Reconnection of 51 mm to 150 mm meter on payment.

RM

150.00


10.6

CHARGES FOR PRESSURE TEST ON MAINS For carrying out on request a pressure test on the public main.

10.7

AGENCY FEE (a) Private Development

25% of actual cost

(b) Quasi Government including Perbadanan Kemajuan Negeri Selangor (PKNS).

15% of actual cost

10-1


Type of Charges 10.8

Charge

CHARGES FOR NEW INSTALLATION WITHOUT TAPPING OR TEE-CONNECTION (a) For meter below 13 mm in size.

RM

15.00

(b) For meter of 14 mm to 19 mm in size.

RM

30.00

(c) For meter of 20 mm to 25 mm in size.

RM

45.00

(d) For meter of 26 mm and larger in size.

10.9

Actual cost plus 25% subject to a minimum of RM 75.00

SUPERVISION CHARGES FOR CONNECTION (a) Tee-connection to 100 mm main. (b) Tee-connection to 150 mm main. (c) Tee-connection to 200 mm - 250 mm.

RM 5.00/mm diameter RM 5.00/mm diameter RM 5.00/mm diameter

(d) Tee-connection to 300 mm - 375 mm.

RM 5.00/mm diameter

(e) Tee-connection to 400 mm - 600 mm.

RM 5.00/mm diameter

(f)

RM 5.00/mm diameter

Tee-connection to main exceeding 600 mm.

`


10-2

115321977 Syabas Guidelines Draft Final 080620071

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