015-YH-1003 (Loss Prevention Requirements)

d

(4. fa.$1

b

j

i

'

ag - ru

KUWAIT OIL COMPANY (K.S.C.)

Engineering Group

Specification Number O l 5 Y H -1003 Loss Prevention Requirements

1

5 AUG 94

ISSUED AS KOC ENG GROUP SPEC

0

7 MAR 93

ISSUED FOR INVITATION TO BID

Rev

Date

Revision

BY

Chkd

Section

PE

Client

QKOC

Engineering Group SpeMcatrion

Specification Number

Rev

Date

Sheet

01 5-YH-1003

I

5-8-94

2 of 26

CONTENTS

............................................ 3 STANDARDS AND SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . 3

1.0 SCOPE 2.0

3 . 0 SERVICE CONDITIONS

.................................

5

4.0 BASIC ENGINEERING INFORMATION . . . . . . . . . . . . . . . . . . . . . . . 4.1 Hazard and Protection Summary . . . . . . . . . . . . . . . . . . . . . . . 4.2 Principles of Facility Layout . . . . . . . . . . . . . . . . . . . . . . . . . . 4.3 Hazardous Area Classification . . . . . . . . . . . . . . . . . . . . . . . . . 4.4 Fire and Gas Detection and Control Systems . . . . . . . . . . . . . . . 4.5 Firefighting Systems and Equipment . . . . . . . . . . . . . . . . . . . . 4.6 Safety Facilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.7 ESD and Remote Control Safety Equipment . . . . . . . . . . . . . . .

6 6 8 9 10 15 20 25

.........................

25

5.0

CONSTRUCTION REQUIREMENTS

6 . 0 PERFORMANCE REQUIREMENTS

. . . . . . . . . . . . . . . . . . . . . . 26

QKOC 1.O

Engineerfng Group Specificatbn


01 ~ - Y H - I O O ~

Rev

Date

Sheet

I

5-8-94

3 of 26

--

SCOPE This specification covers the loss prevention requirements for the Facility in Kuwait. The loss prevention systems shall fully comply with all relevant contractual requirements specified in the Scope of Work and Technical Specification of the Contract. The objective is to protect personnel, conserve natural resources and preserve capital investment by ensuring that the Facility will be designed and built in accordance with the requirements of established regulations, codes and standards. Correctly applied these requirements will ensure that hazards are identified and recognised measures introduced to reduce both the risks and the consequences of accidents.

2.0

STANDARDS AND SPECIFICATIONS 2.1

The loss prevention requirements shall conform, except where otherwise specified, with the current issue and amendments of the following prevailing on the effective date of the Contract: 2.1.1

International Standards API RP 500A

Classification of Locations for Electrical Installations in Petroleum Refineries

API RP 520A

Design and Installation of PressureRelieving Systems in Refineries

API RP 521

Guide for Pressure-Relieving Depressuring Systems

API RP 620

Design and Construction of Large Welded Low-Pressure Storage Tanks

API RP 650

Welded Steel Tanks for Oil Storage

API RP 2001

Fire Protection in Refineries

ASME Vlll Div I

Pressure Vessels

ASME Vlll Div 2

Pressure Vessels (Alternative Rules)

NFPA 11

Standard for Low Expansion Foam and Combined Agent Systems

and

Enginwring Gmup Specii7catbn

2.1.2

2.1.3


Rev

Date

Sheet

01 5-YH-1003

1

5-8-94

4 0 f 26

NFPA 1 2

Standard on Carbon Dioxide (CO,) Extinguishing Systems

NFPA 15

Standard for Water Spray Fixed Systems for Fire Protection

NFPA 2 0

Standard for the Installation of Centrifugal Fire Pumps

NFPA 3 0

Flammable and Combustible Liquids Code

NFPA 72E

Automatic Fire Detectors

Fire

British Standards BS 4 7 6

Fire Tests on Building Materials and Structures

BS 5 3 0 4

Code of Practice for Safety of Machinery

BS 5345

Code of Practice for Selection Installation and Maintenance of Electrical Apparatus for Use i n Potentially Explosive Atmospheres (Other T h a n Mining Applications or Explosive Processing and Manufacture)

BS 5378

Safety Signs and Colours

BS 5445

Components of Automatic Fire Detection Systems

BS 5499

Fire Safety Signs, Notices and Graphic Symbols

BS 5501

Electrical Apparatus for Explosive Atmospheres

BS 5839

Fire Detection and Alarm Systems for Buildings

BS 5908

Code of Practice for Fire Precautions in the Chemical and Allied Industries

Potentially

Company Standards STD 381 I 0 7

Hazardous Area Classification; Zonal Boundaries and Requirements for Contained Equipment

QKOC

Engineering Group Specification


Rev

Date

Sheet

01 5-YH-1003

1

5-8-94

5 of 26

STD 3 8 110711

2.1.4

The Completion of Hazard Assessments and Classification of Hazardous area

Engineering Group Specifications and Drawings 0 1 5-AH-10 0 1

Basic Design Criteria

0 15-AH- 10 0 2

International Codes and Standards

0 1 5-LH-1001

Piping Materials Classes

0 1 5-NH-1004

Passive Fireproofing Application

0 1 5-XH-1005

Shop and Field Painting

0 1 5-YB-1001

Fire and Gas Cause and Effect Charts

0 1 5-YH-1001

Fire and Gas Detection Equipment

0 1 5-YH- 10 0 2

Fire Protection and Safety Equipment

0 15-Y H- 1004

Emergency Shutdown and Depressuring System Requirements

Materials

and

Compliance with this specification shall not relieve the Contractor of its responsibility t o supply equipment suited t o meet the specified service conditions and applicable regulations. Where conflicts exist between this specification and other Drawings, standards, codes and specifications, the most stringent shall be applied. Where any aspect of the design is not covered by referenced standards, then the standard procedure and normal good engineering practice of the Contractor shall be submitted t o the Company for approval. SERVICE CONDITIONS 3.1

The Facility is at a desert location under conditions of high ambient temperatures and high humidity. The atmosphere is generally dusty and corrosive and may contain traces of hydrogen sulphide.

3.2

Equipment shall therefore be suitable in all respects for service in the conditions stated in the Engineering Group Specification entitled "Basic Design Criteria" (Number 0 1 5-AH-10 0 1 ).

QKtK 1

Engineering Gmup Spedfimion


Rev

Date

Sheet

0 1 5-YH-1003

1

5-8-94

6 of 26

BASIC ENGINEERING INFORMATION 4-0 4.1

Hazard and Protection Summarv Realization of hazards is fundamental t o assessing the loss prevention requirements. Specific problems shall each be studied t o determine an effective solution or counter measure.

I

The primary hazards present in the Facility are as follows:

4. I . 1

Fire Hazards Whenever hydrocarbon products are conveyed or processed, the hazard of fire is present. The fire protection philosophy shall generally be based upon rapid intervention by trained firefighting teams. Remotely controlled systems shall be provided for: a.

Gas turbine drivers (where installed) in the form of CO, extinguishing systems, and

b.

Crude oil tanks, in the form of water spray cooling systems. All the other elements making up the firefighting system shall rely on local manual operation. They are described in section 4.5 hereinafter.

4.1.2

Explosion Hazards The ignition of mixtures of combustible gas and air can lead t o explosions particularly where the mixture occurs in a confined area. The explosion protection philosophy is to: a.

Reduce where emissions.

b.

Reduce as far as possible the number of confined areas.

c.

Consider the effects of ventilating or blanketing confined areas which remain.

d.

Install combustible gas detectors.

1.

possible the

occurrence

Wherever gas may accumulate and

of

gas


Engineering Gmup

01 ~ - Y H - I O O ~

Spe&7cathn 2.

e.

4.1.3

Rev

1

Date

5-8-94

Sheet

7 of 26

whenever there are unprotected sources of ignition.

Plan the layout of the Facility to minimize the effects of any explosion which may still occur.

Toxic Hazard The incoming hydrocarbons may contain up to 500 ppm of hydrogen sulphide. Where this is the case, H,S concentration within the gas handling parts of the process can reach 1200 ppm, typically in the crude tank vapours. Consequently, all materials shall be selected strictly in accordance with the Project drawings entitled "Material Selection Guides." Additionally, H,S detection sensors shall be installed around the Facility and in inlets of HVAC systems to manned areas so as to provide the earliest possible detection of leakage.

4.1.4

Pyrophoric Ignition As described in API RP 2001, steps shall be taken to prevent the ignition of combustible vapours by the presence of pyrophoric iron sulphide deposits. These deposits are found in locations where hydrogen sulphide and other sulphur compounds are formed in petroleum storage and petroleum processes.

4.1.5

4.1.6

Accretions and Sludge a.

As well as the combustible gases being present in the atmosphere of a confined space, combustible and/or toxic solid accretions and sludge may also be present.

b.

Provision must be made for their safe removal by dissolving, flushing or by mechanical means.

Vehicle Impact Vehicles entering the Facility present the possibility of vehicle to vehicle, and vehicle to plant collisions. This risk shall be minimized by control of vehicle access, road layout, barriers, driver training, and speed limitation inside the Facility.

4.1.7

Radioactive Materials A limited amount of radioactive material will be introduced in the form of smoke detectors. Normally, these will not present a problem, but safe practices must be followed for their maintenance and eventual disposal. It is recommended that

-

1


Gmup

015-YH-1003

Rev 1

Date

5-8-94

Sheet

8 of 26

both these tasks be entrusted to the Approved Manufacturer, or that the Manufacturer's instructions are followed implicitly. The use of radioactive material for non-destructive testing (NDT) shall be controlled by operating procedures. 4.1.8

Lightning Strike Lightning protection shall be provided in all buildings and structures to minimise damage due to lightning strikes.

4.2.

Princi~lesof Facilitv Lavout 4.2.1

General This section covers the main features which should be considered when laying out the Facility. Careful attention to equipment location can improve the safety, accessibility and efficiency of the Facility. Due consideration shall be given to the location of process, utility, control and office areas, as well as escape routes and safety equipment, having regard to the relevant hazards. The first approach to layout shall be to grade each system according to the nature of the hazard and then categorise the systems of similar grading as follows: 1.

2. 3. 4.

5.

Systems which have the potential to emit flammables. Systems which may emit toxic gases. Systems which are a source of ignition. Systems which must be located in an unclassified area. Systems which are considered non-hazardous.

Typically, sources of flammables shall be segregated from sources of ignition and control areas shall be separated from all sources of flammable and toxic emissions. 4.2.2

Control Room a.

A pressurised control room shall be located in a control building so as to have a commanding view of the Facility. The control building location shall be towards one edge of the Facility so that it is not surrounded by process or storage areas, and can be approached by road without passing through the Facility.

QKOC


Engineering Group Spedfieathn

4.2.3

4.3

01 ~ - Y H - I O O ~

Rev

Date

Sheet

I

5-8-94

9 of 26

b.

Wherever possible, the location shall take account of prevailing winds to ensure that any gas leakage is not blown towards the control building.

c.

The building shall not be more than t w o storeys high, and shall be positioned at a minimum distance of 60 m from the nearest process or storage area. This distance shall not be reduced by any future process or building expansion.

d.

All windows in the control room, and other normally manned rooms facing the direction of the Facility shall be laminated glass having non-splinter characteristics. Window frames shall be securely attached to the building structure. Doors located on the process side of the building should open outwards.

Roads a.

The main access to the Site shall be via a controlled access road to prevent unauthorised vehicles visiting the site.

b.

Roads on the Site shall be sized and laid out with due consideration being given to the amount of traffic and the requirements of emergency vehicles.

Hazardous Area Classification

4.3.1

General a.

The objective of area classification shall be to avoid ignition of releases of flammable vapours that may occur from time to time in the operation of facilities handling hyfdrocarbons.

b.

This approach is to reduce, to an acceptable level, the probability of coincidence of a flammable atmosphere and a source of ignition.

c.

It is not the intent of area classification to guard against the ignition of major releases of flammable materials under catastrophic failure of plant, which, in properly run facilities, have a very low probability of occurrence.

d.

Area classification is the assessed division of the Facility into hazardous areas and non-hazardous areas, and the subdivision of the hazardous area into zones.

QKOC

Englnwrtng Gmup SpeMcatbn


Rev

01 5-YH-1003

1

Date

5-8-94

Sheet I O O ~ 26

e.

A hazardous area is a three-dimensional space in which a flammable atmosphere may be expected t o be present in such frequencies as t o require for example special precautions for the construction and use of electrical apparatus.

f.

All other areas are referred t o as non-hazardous in this context though they may form part of a wider restricted area within the Facility in which all work is carried out under permit control.

4.3.2 Classifications

Hazardous areas are subdivided into three zones as follows: Zone 0 That part of a hazardous area in which a flammable atmosphere is continuously present or present for long periods. Zone 1 That part of a hazardous area in which a flammable atmosphere is likely t o occur in normal operation. Zone 2 That part of a hazardous area in which a flammable atmosphere is not likely t o occur in normal operation and, if it occurs, will exist only for a short period. 4.4

Fire and Gas Detection and Control Svstems 4.4.1 General

a.

The basic principle t o be employed in most areas shall be one of manual fire and gas detection by operations personnel. Automatic fire detection shall be provided in specific areas where there is a risk of fire and early detection is required.

b.

Flammable gas detection shall also be provided in specific areas where there is a high risk of leakage and early detection is required. Where toxic hazard (H,S) exists, then H,S detection shall also be provided.

c.

Positioning and quantities of detectors shall generally be as shown on the Project drawing entitled "Fire and Gas

QKOC

Engineering Gmup SpeMeaihn


Rev

Date

Sheet

01 5-YH-1003

1

5-8-94

11 of 26

Equipment Layout." The Contractor shall develop these requirements during detail design and submit for Company approval. All forms of automatic detection shall cause an audible and visual alarm in the Control Room upon single detector operation. Automatic control actions shall only be initiated by coincident operation of t w o or more detection inputs of the same type from the same area. Depending upon the area and type of detection this may be audible alarm only, release of extinguishment or shutdown initiation. Actions shall generally be as defined on the Project drawings entitled "Cause and Effect Charts." These shall be developed by the Contractor during detail design and submitted for Company approval. 4.4.2 Gas Detection Gas at the Facility contains both heavier and lighter than air components, at all stages of the process. Heavier gases may include H2S, lighter gases are mostly hydrocarbons. Due to the flat terrain, open layout of the Facility, and prevailing winds, lighter gases are likely to move away from any leakage fairly rapidly, mixing readily with air. Heavier gases may settle in sheltered areas, between equipment, in sumps, etc. Where the product includes a significant quantity of H2S, any heavier-than-air gas cloud will contain both H2S and hydrocarbons. H,S detectors shall therefore be provided in areas, as described above, where heavier-than-air gases may accumulate. In such areas, detection of H2S will give warning of toxic hazard, and also early indication of presence of flammable hydrocarbon gas. Where H2S is not present in a significant quantity, then hydrocarbon gas detection shall be provided. Point-type hydrocarbon detectors shall be installed at locations where lighter-than-air hydrocarbon gases may accumulate. On open Site areas, beam-type

QKOC

Ehglneering Gmup SpecifiCa&rl


Rev

Date

Sheet

01 5-YH-1003

1

5-8-94

12 of 26

hydrocarbon gas detectors shall be used for detection of drifting gases. In addition, flammable and toxic (where necessary) gas detectors shall be provided at HVAC intakes t o normally manned areas. Flammable gas detectors shall also be provided at HVAC intakes t o rooms containing unprotected equipment, and both instrument and plant air compressors' intakes. Upon gas detection, the system shall alert the operator in the control room t o enable manual intervention t o initiate shutdown and minimise inventories in the affected area of the Facility. Upon confirmed gas detection, the system shall automatically isolate unprotected sources of ignition in the affected area(s). Operation of gas detectors monitoring HVAC air intakes shall shutdown the relevant HVAC, close the main intake damper, and initiate a general alarm. Wherever gas detectors are located, alarm devices consisting of horns and flashing beacons shall be mounted close by t o provide local warning t o operations personnel.

4.4.3

Fire Detection The following types of detectors shall be used: a.

Smoke Detection Smoke detectors shall be provided in the following areas:

b.

1.

Control room, including floor and ceiling voids.

2.

Electrical equipment rooms.

3.

Substation.

4.

Laboratories.

5.

Diesel generator.

Flame Detection Combined ultraviolet (UV) and infrared (IR) detectors shall be used around the compressor modules, within turbine enclosures, and around crude oil pumps.

QKOC

Engineering Gmup Specificatbn c.


Rev

Date

Sheet

01 5-YH-1003

I

5-8-94

13of 26

Heat Detection Point heat detection shall be installed in rooms, or over equipment where the earliest indications of fire are most likely to be temperature rise, or where normal conditions preclude use of smoke detectors. Rate of rise heat detectors shall be used in areas which are subject to large (but relatively slow) temperature increases, such as above generator sets. Rate compensated detectors shall be used where rapid detection of a fast growing fire is essential, as under turbine enclosures.

2.

d.

Heat detection shall be provided around compressors and pumps. This shall be either fusible plug pneumatic system, or linear heatsensing cable. Operation of this system shall cause shutdown of the compressor and repeat signals to the Fire and Gas and Emergency Shutdown (ESD) control systems.

Detector Output lnhibit lnhibit facilities shall be provided for each detector circuit on the main fire and gas control panel for maintenance and testing. Operation of these facilities shall inhibit all automatic-executive control actions from the relevant fire and gas detectors. All annunciation facilities shall remain fully functional. All modes of inhibit shall be clearly identified.

e.

4.4.4

Manual Call Points 1.

Manual call points shall be provided at strategic locations around the buildings and Site areas to enable operations personnel to alert the control room operator of an incident.

2.

Operation of any manual call point shall initiate an alarm within the control room.

Fire and Gas Panel a.

The main fire and gas panel shall be located in the control building. It shall contain all equipment necessary to provide:

QKOC

Engineering Gmup Spedficatbn


Rev

01 5-YH-1003

1

5-8-94

14 of 26

Monitoring and control of all detectors alarm and line fault (openlshort circuit) conditions. Fire and gas logic implementation. Control of executive outputs to extinguishment and other systems.

alarms,

Self-testing facilities. Operator interface. Serial communication link to DCS for status reporting. Future repeat of status signals for transmission to fire station. The operator interface shall be provided in the form of a display panel comprising of LEDs, keyswitches and pushbuttons as necessary to meet the functional requirements. The panel displays shall give clear indication of the type and location of each alarm. Control pushbuttons and key switches shall be provided for extinguishant systems, fire pumps, and audible and visual alarms. Information and controls may be presented in matrix or graphical mimic format, or combination of both. The display panel shall be mounted in a normally manned control room. It may either be part of the fire and gas control panel or a separate remotely mounted panel. For example, when the control panel is required to be in a normally unmanned room, the display shall be provided as a separate unit to be mounted in the manned area. The display panel shall be powered from the fire and gas panel, all links between the t w o should be hard wired; however, use of redundant serial communication or multiplexed links may be acceptable subject to Company approval. 4.4.5

Alarm System Audible alarms shall be provided on top of the control building and throughout the Facility. Pushbuttons on the fire and gas

QKOC

EnglneerJng Group spmcaiion


Rev

Date

Sheet

01 5-YH-1003

1

5-8-94

15 of 26

panel shall initiate separate tones for "fire," "evacuate. "

I

4.4.6

4.5

"gas" and

Power Supplies a.

All fire and gas detection control equipment shall operate at 24-VDC powered from a dedicated Uninterruptible Power Supply (UPS). The UPS shall comprise charger systems with emergency backup batteries. Battery capacity shall be sufficient for 2 4 hours' quiescent operation followed by 3 0 minutes operation of the "evacuate" alarm.

b.

The battery charger system shall be arranged so that no single incident can cut off all power supplies to the fire and gas system.

c.

All cabling or piping associated with the system shall be suitably protected t o minimise the possibility of damage arising from fire or other physical causes.

Firefiahtina Systems and Eaui~ment 4.5.1

General A philosophy has been developed based upon remotely and locally operated systems relying on rapid manual intervention and based predominantly upon the use of a firewater ring main system.

4.5.2

Firewater Supply Tank Firewater shall be stored in an aboveground storage tank of nominal capacity 20000 barrels (318 0 cubic metres) provided with an automatic in fill arrangement from the Facility's normal brackish water supply.

4.5.3

Fire Pumps a.

Two fire pumps shall be provided, each rated to supply 100% of the maximum anticipated firewater demand. Both shall be diesel engine driven, centrifugal pumps, designed and installed in accordance with NFPA 20.

b.

The maximum anticipated demand for each Facility shall be noted on the relevant pump data sheet. The Contractor shall check this figure during detail design, and confirm suitability. Maximum anticipated demand shall be based on the largest combination of internal

Englneering Gmup speCdk&!&tl


Rev

Date

Sheet

0 1 5-YH-1003

1

5-8-94

16 of 26

foam for a tank on fire, external water for cooling the exposed surfaces of neighbouring tank(s) plus an allowance for mobile foam cannon and foam hose lines. Obviously, this will vary depending upon the sizes and layout of the crude tanks. c.

4.5.4

There is a further requirement for a pressure of at least 10.3 barg (150 psig) to be available at the hydraulically most remote hydrant, while the maximum anticipated demand is being supplied.

Jockey Pumps Two electrically powered jockey pumps shall be provided to maintain pressure in the ring main and obviate the necessity for the fire pumps to run to make up small losses.

4.5.5

Pump Controls The duty fire pump shall normally be started by a signal from the main fire and gas panel upon loss of ring main pressure beyond the capacity of the jockey pump to recover. Dedicated signals shall be provided for duty and standby sets, but should a "duty pump running" signal not be received back within thirty seconds, then the standby set shall be called upon in any case. The starting arrangements and sequence shall comply with NFPA 20 paragraph 7-5-2 and A - I 1-4. Each pump shall be supplied complete with its own local controller which shall relay status indications to the main fire and gas panel.

4.5.6

Firewater Ring Main a.

The firewater ring main shall be 10-in. diameter, laid with epoxy-lined carbon steel, suitably coated and wrapped in accordance with the Engineering Group Specification entitled "Piping Material Classes" (Number 01 5-LH-1001).

b.

Sectioning block valves shall be utilised to isolate a section of the main which may have failed. They shall be butterfly valves located in covered concrete pits at approximately 300-foot (91-m) intervals. This close spacing limits the number of hydrants or systems directly affected by any failure and means that if an incident also arises, then emergency operations will be disrupted far less. Valve-operating handles and extended shaftslkeys shall be stowed in the firefighting equipment boxes.

Engineering Gmup SpeMcation

4.5.7


Rev

Date

Sheet

01 5-YH-1003

1

5-8-94

1 7 0 f 26

Fire Hydrants Fire hydrants shall be provided throughout the Facility at not more than 30-m intervals. Each hydrant shall have a 6-in.-diameter inlet connection and barrel, with t w o 2%-in.-diameter valved hose outlets. Around the tank and process areas, consideration shall be given to providing a number of 5%-in.-diameter fire engine pumping connections. This closer than normal spacing of hydrants will allow very effective operations particularly if 5 %-in.-diameter connections are provided for the trailer-mounted foam and water cannons. Firefighting equipment boxes shall be located as shown on the Project Drawing entitled "Fire Protection and Safety Equipment Layout." They shall provide stowage for hose and hydrant equipment ready for emergency use.

4.5.8

4.5.9

Fire Extinguishers a.

Large 75-kg, trolley-mounted, and 12-kg portable dry powder chemical extinguishers shall be utilised predominantly on the Facility, with 5-kg CO, extinguishers provided in the control room, electrical room, switch gears, instru.ment sets, pantry, UPS room, and battery room.

b.

Location of fire extinguishers shall be in a safe area; this shall be consulted with the Company's Fire & Safety Department.

c.

These extinguishers shall not be used for fire watch duties in relation with the permit to work system. A separate distinct store of extinguishers shall be maintained for that purpose.

Mobile Cannons and Monitors a.

For use in more serious incidents, trailer-mounted foamlwater cannons and water monitors shall be provided. They shall be parked, under sunshades and shelters built for the purpose, adjacent to the fire pumps and by the road leading to the crude tank areas.

Ehglneering Group SpeMcathn


01 ~ - Y H - I O O ~

Rev I

Date

5-8-94

Sheet

1 8of 26

b.

The foamlwater cannon shall be mounted on an integral 900-1 capacity foam concentrate tank which shall give more than 10 minutes' supply when operating at around 7 barg at an induction ratio of 3%. The tank shall be capable of being refilled with concentrate by the Company fire team without shutting the water off.

c.

The water monitor shall be mounted on a bogie-type trailer and shall be capable of being manhandled or towed by a vehicle into position. Throughputs up to 2250 Ilmin with a range of up to 4 0 m shall be possible when operating at around 7 barg.

4.5.10 Fixed Firefighting Systems An integral carbon dioxide fire extinguishing system shall be supplied within each gas turbine package (where applicable). These systems will be arranged for manual operation from the control room as well as locally by the package. The crude oil storage tanks shall be provided with firefighting facilities in the form of high-level foam-making chambers and pourers for internal fires, and a tank roof water deluge system to protect the exposed surfaces from an external fire. Foam solution lines and firewater lines laid across the bunds shall be buried. Foam solution collecting heads and deluge valve stations shall be located outside the bund walls. These shall be protected by purpose-built radiation shields to protect firefighting personnel from exposure to radiated heat. 4.5.1 1 Passive Fire Protection a.

Steel loses its strength rapidly when heated and at 450°C has effectively lost its load-bearing capability.

b.

Where structural steelwork supporting equipment may be exposed to severe fire conditions, it shall require protecting to maintain its load bearing capability. This protection shall be achieved by co'ating the steelwork in an appropriate thermally insulating (fireproofing) material.

Engineering Gmup Speaificatbn c.

d.

e.

specification Number

Rev

Date

Sheet

01 5-YH-1003

I

5-8-94

19 of 26

Fireproofing shall as a minimum be provided for the following:

1.

Steel framing supporting any containing flammable materials, collapse may cause further hazard.

2.

Skirts of vessels containing flammable materials.

3.

Main pipe rack, including all spurs, and individual pipe supports.

4.

All pipework in the bunds.

equipment or where

Fireproofing on structures supporting equipment shall be applied up to the support level of the highest equipment required to have its support fireproofed. The following members of the structure should be fireproofed: 1.

All stanchions. Casing should be continuous from the foundation pier to the top flange of the most elevated equipment support beam. Casing at the pier should be extended to cover anchor bolts.

2.

All beams which directly or indirectly support equipment.

3.

All bracing and other members which contribute to the effective strength of such stanchions and beams.

Fireproofing of skirts and steelwork supporting vessels shall be applied to: External and internal surfaces of skirts, with the exception of skirts of less than 1.2-m outside diameter (OD) and with only one access opening which will not be cased inside. The bottom of the vessel should not be fireproofed.

f.

Fireproofing shall be applied to pipe racks up to a minimum height of 6 m above grade. The following members should be fireproofed: 1.

All cross beams, to the level of the top flanges.

2.

All stanchions to the top flange of the highest cased cross beam. Casings should be

-

0 KOC

Enginwing Group SpWl7catrion


Rev

Date

Sheet

01 5-YH-1003

1

5-8-94

2 0 of 26

continuous and should be extended at foundation pier to cover anchor bolts.

3.

g.

4.6

Stanchions and longitudinal beams, supporting air coolers, to the top flange of the support beam. The support steelwork of the air cooler itself should be cased up to and including the support to the tube bundles.

Steelwork thus protected with passive fireproofing shall be able to withstand t w o hours' exposure to a hydrocarbon fire. Design and application of fireproofing shall be in accordance with the Engineering Group Specification entitled "Passive Fireproofing Materials and Application" (Number 0 1 5-NH-1004).

Safetv Facilities 4.6.1

Site Access for Emergency Vehicles a.

Adequate access for emergency service vehicles to enter and circulate around the Facility shall be provided.

b.

Fire appliances are the largest envisaged such vehicles and their access requirements are as follows:

Type of Appliance

Pumping

Minimum width of access road

Minimum clearance height

Turning circle width (dial

Minimum width of gateways

Laden Weight

16.76 m

3.05 m

10.2 tonnes

21.30 m

3.05 m

14.2 tonnes

21.30 m

3.05 m

18.8 tonnes

c.

Where the use of a turntable ladder can be foreseen, a road or hardstanding is required with a minimum width of 4.3 m. This road shall be positioned so that its nearer edge is not less than 5.0 m or its further edge is not more than 10.0 m from the face of the building. A turntable ladder standing on a road positioned within these limits shall be able to operate to its maximum height.

d.

The hydraulic platform needs a road or hardstanding 5.5 m wide because of its jacks. If it is required to

Engineering Group


Rev

Date

Sheet

01 5-YH-1003

I

5-8-94

21 of 26

Specifica&n

operate t o its maximum height, the road or hardstanding shall be positioned so that its nearer edge is not less than 2.0 m or its further edge is not more than 7.0 m from the face of the building. There shall also be at least 2.2 m of unobstructed space beyond this further edge t o allow for the sweep of the boom. e.

4.6.2

Personnel Access a.

I

Roads including any manhole covers and utility service concrete pits shall be capable of carrying the weights set out above for the respective appliance.

b.

Doors 1.

Doors shall have a free width of at least 1000 m m and a free height of at least 21 00 m m above the floor.

2.

Doors shall generally be orientated so that they open in a direction of escape, except doors t o pressurised areas, which are t o be installed so that they are maintained closed by the differential pressure.

3.

Doors on escape routes shall not be capable of being locked and shall be provided w i t h selfilluminated signs.

Guardrails The edge of any walkway with a drop of 5 0 0 m m or more shall be provided with fixed handrail which shall be at least 1 m high. Stanchions shall be located at maximum intervals of 1.8 m.

c.

Toeboards Any elevated walkway or platform shall be provided with toeboards. The height of these shall be a minimum 100 mm. Any opening between the deck and the toeboard shall not exceed 15 mm.

d.

Stairs Stairs shall be provided where there is a height change of 3 0 0 m m or more. Stair treads shall have a non-slip surface.

QKOC

Engineering Group SpeMaibn

e.


Rev

01 5-YH-1003

1

Date

Sheet

Ladders

.

Where fixed vertical ladders are used, they shall have a breadth of at least 400 mm.

2.

There shall be an unobstructed depth behind the rungs of at least 300 mm. The vertical distance between the rungs shall not be less than 250 mm and not more than 350 mm. The rungs shall be evenly spaced for the entire ladder.

1

Maximum continuous ladder height shall be 9 m. Where the ladder height exceeds this, rest landings shall be placed at a maximum of 6-m intervals. Starting at 2.5 m from the base of the ladder, all ladders shall be provided with safety cages. The safety cage shall extend 1 m above the top of the ladder and the distance from the rungs to the back of the cage shall not exceed 800 mm 4.6.3

Escape Routes a.

Escape Routes and Access in Process Areas Access to structures shall take account of the need for regular visits and maintenance, the requirements for equipment handling and of mobile cranes. A combination of stairs, vertical ladders and platforms may be required. Walkways and platforms in process areas shall be designed for safe escape. Equipment layouts shall, as far as possible, permit walkways and platforms to be laid out with a minimum of dead ends and give sufficient space at high levels for safe execution of all routine maintenance operations. The minimum width of an escape route shall be 1.2 m. The minimum headroom required above all escape routes (including stairways) is 2. I m.

b.

Ladders Vertical ladders shall only be provided as a means of escape from an area which is already served by one

Engln881Jhg G m p SpecJficWon


Rev

Date

Sheet

01 5-YH-1003

1

5-8-94

23 of 26

stairway. Exceptions to this (e.g., air cooler platforms) shall be subject to approval of the Company.

4.6.4 Safety Signs and Notices a.

Graphic signs shall be prominently displayed to identify locations of safety, firefighting and survival equipment.

b.

In addition, signs shall be installed to inform, direct and advise on safety matters in both the Arabic and English languages.

c.

All directional signs shall be illuminated.

4.6.5 Personnel Safety a.

b.

Personnel Safety Equipment 1.

Suitable safety helmets shall be provided for use on the plant. Sufficient protective clothing (ear protectors, goggles, selfcontained breathing apparatus, gloves, overalls and safety boots) shall be provided for all personnel and visitors.

2.

All equipment provided shall be kept clean and in a good state of repair and be readily available for use when required.

Lifting Appliances All lifting appliances and every item of lifting equipment shall have been examined and tested.. Each item shall be legibly marked with its safe working load. Certification of all lifting appliances shall be undertaken by a third party nominated by the Company.

c.

Machinery Guarding 1.

All exposed moving parts on all machinery shall be suitably guarded to the requirement of BS 5304 or better to protect personnel from injury.

2.

Guards and safety devices provided shall be well maintained and kept in position whilst machinery is running.

Engineering Gmup Specification

d.

e.

4.6.6


Rev

Date

Sheet

01 5-YH-1003

I

5-8-94

24 of 26

Personnel Protection Against Hot and Cold Surfaces 1.

Reasonable safeguards shall be adopted to eliminate the possibility of accidents caused by personnel coming into contact with either damaging hot or cold surfaces which will impart sudden shock or injury.

2.

Where surfaces are deliberately exposed to emit heat or perform cooling functions, suitable identification and guards shall give personnel adequate warning. Where this does not apply, the following temperature criteria for providing protective insulation shall be adopted: (a)

For surfaces within reach from permanent working floor level and at high level but within reach from ladders or any portable access equipment and where access is possible, 70°C, and

(b)

for surfaces with a temperature of 10" C or below.

Where it is not practical to insulate the surface, a suitable guard with adequate spacing from the surface shall be installed.

Medical Facilities Emergency first-aid facilities shall be provided on the Facility, and these shall be as defined in the Engineering Group Specification entitled "Fire Protection and Safety Equipment " (Number 0 1 5-YH-1002). A first-aid room shall be provided within the control building.

4.6.7

Emergency Safety Showers and Eyebaths In areas where personnel may come into contact with hazardous substances, a combined safety shower and eyebath unit shall be provided. These units shall be supplied from the Facility potable water supply.

Engineering Group SpeMcatrion

4.7


Rev

Date

Sheet

01 5-YH-1003

1

5-8-94

25 of 26

ESD and Remote Control Safety Eaui~ment The ESD system shall be designed to provide safe shutdown of process and equipment on receipt of an appropriate shutdown signal. The objectives of the ESD system design shall be: a.

Protection of human life.

b.

Protection of economic investment.

c.

Protection of the environment.

The ESD system shall act independently of all other systems to sense an abnormal operational or equipment condition. It shall react to this by shutting down, isolating and, where appropriate, venting the plant or sections with the objective of preventing any undue consequential effects. The ESD system for the Facility shall be an independent standalone system. It shall be designed to operate in accordance with the requirements of the Engineering Group Specification entitled "ESD and Depressurising System Requirements" (Number 0 1 5-YH-1004). Suitable safety devices shall be provided, capable of remote manual operation, which, when activated in the event of a fire emergency in a space or area, shall aid the control of the emergency by the isolation of any related equipment which may otherwise provide fuel for the fire. Other valves, critical in upset or fire conditions, shall have remote actuators fitted to them as part of valve trims. The remote, manually operated controls for safety devices shall be centralised as far as is practicable and shall be in accessible, clearly marked positions which shall be unaffected in the event of a fire in any of the rooms, spaces or areas served by such devices.

5.0

CONSTRUCTION REQUIREMENTS All particular construction requirements are detailed in the Engineering Group Specifications entitled "Fire and Gas Detection Equipment," (Number 0 1 5-YH1001 ) "Fire Protection and Safety Equipment," (Number 0 1 5-YH-1002) and "Emergency Shutdown and Depressurising System Requirements" (Number 0 1 5-YH-1004).

Engineedng Gmup SpeMcatbn 6.0


Rev

Date

Sheet

01 5-YH-1003

1

5-8-94

26 of 26

PERFORMANCE REQUIREMENTS

All particular performance requirements are detailed in the Engineering Group Specifications entitled "Fire and Gas Detection Equipment," (Number 0 1 5-YH1001) "Fire Protection and Safety Equipment," (Number 0 1 5-YH-1002) and "ESD System Requirements" (Number 01 5-YH-1004).

015-YH-1003 (Loss Prevention Requirements)

Recommend Documents