HSEPHILOSOPHY

ADMAOPCODocumentNo. : AD219705SPHY07001 Rev.

NPCCDocumentNo. : 3291URP001 0

13/11/2014 3291URP001Rev0 2OF33

REVISION CONTROL SHEET

Rev No. Date Rev. Shts. Details of Revision

A 02/09/2014 All Issued For IDC

B 21/09/2014 All Issued for Review/Approval

0 02/11/2014 All COMPANY Comments Incorporated and Issued for Design

13/11/2

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2014

NTRODUCT

EPC 1.1

EPC 1.2

EPC 1.3

PROJECT OV

DEFINITIONS

Defin3.1

Abbre3.2

REFERENCE

Laws4.1

ADNO4.2

COM4.3

Proje4.4

Amer4.5

Britis4.6

Natio4.7

Intern4.8

Other4.9

PROJECT HS

Haza5.1

FACILITIES D

Wellh6.1

Wellh6.2

Subs6.3

GENERAL SA

Inher7.1

Form7.2

Safet7.3

SHEA7.4

ORIENTATIO

PROCESS SA

DRAINS, VEN

HAZARDOUS

Equip11.1

DMAOPCO

PCCDocume

ION ............

Package-1

Package-2

Package-3

VERVIEW ..

S & ABBREV

nitions........

eviations..

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s / Regulati

OC HSE Ma

PANY (ADM

ect Specific

rican Petro

sh Petroleu

onal Fire Pr

national Ele

r Codes.....

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rd Manage

DESCRIPTIO

head Towe

head Towe

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AFETY REQ

rent Safety

mal Safety S

ty Engineer

AMS Regis

ON & EQUIP

AFETY .......

NTS AND PU

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ter..............

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URGE PROV

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No. : AD21

: 3291

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A

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2014

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: 3291

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INTRODUADMA-OPCof Abu DhaComplex (U

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DocumentN

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No. : AD21

: 3291

291URP001

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EPC PackaIn general, on DAS Islassociated executed bADMA-OPCFabricationContract-17

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be Installatiobe Installatioon and asss and cond

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: N

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SEPHILOSO

No. : AD21

: 3291

291URP001

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AbbreviatiADMA-OADNOC API ALARP ATEX BOPD BAT BP COMAH CFD COP CAP ESD EERA EIA ECMS EIS EPIRB ESSA ERP FEED FFD FEA FRA H2S HSE HAZID HAZOP HSECESHSEIA HSEMS HSSD HVACP IALA

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32

R : N : A

s

: Abu: Abu: Am: As L: Atm: Bar: Bes: Brit: Con: Com: Cod: Civi: Em: Esc: Env: Elec: Env: Em: Em: Em: Fro: Full: Fed: Fire: Hyd: Hea: Haz: Haz: HSE: Hea: Hea: Hig: Hea: Inte

Nav: Inte: Inde: Inte: Inte: Inst: Inde

SEPHILOSO

No. : AD21

: 3291

291URP001

National Pet

Agency whotudies for th

u Dhabi Maru Dhabi Naterican PetroLow As Rea

mospheres Errels of Oil Pst Available ish Petroleuntrol of Majomputationalde of Practicil Aviation Aergency Sh

cape, Evacuvironmental ctrical Contvironmental ergency Poergency Syergency Rent End Engl Field Devederal Enviroe Risk Assedrogen Sulpalth, Safety zard Identifizard and OpE Critical Eqalth Safety &alth, Safety h Sensitivityating, Ventilernational Avigation andernational Cependent C

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osition Indicystems Survesponse Plaineering &

elopment onmental Agssment

phide and Envirocation perability quipment a& Environmand Enviroy Smoke Delation, Air C

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HSEPHILOSOPHY

ADMAOPCODocumentNo. : AD219705SPHY07001 Rev.

NPCCDocumentNo. : 3291URP001 0

13/11/2014 3291URP001Rev0 8OF33

LOC : Loss of Containment LEL : Lower Explosive Limit LER : Local Equipment Room MAH : Major Accident Hazard MACP : Manual Alarm Call Point MEDVAC : Medical Evacuation MOL : Main Oil Line NFPA : National Fire Protection Association OHRA : Occupational Health Risk Assessment OH : Occupational Health PAGA : Public Address & General Alarm PHA : Process Hazard Analysis PMS : Power Management System POB : Person On Board P&ID : Piping and Instrumentation Diagram PPE : Personal Protective Equipments PPM : Parts Per Million QRA : Quantitative Risk Assessment RTU : Remote Telemetry Unit SART : Search & Rescue Transponder SOW : Scope of Work SCADA : Supervisory Control and Data Acquisition SIMOPS : Simultaneous Operations SOLAS : Safety of Life at Sea TR : Temporary Refuge UPS : Uninterrupted Power Supply US : Umm Shaif UAE : United Arab Emirates USSC : Umm Shaif Super Complex VHF : Very High Frequency VOIP : Voice Over Internet Protocol WHT : Well Head Tower WI : Water Injection WF : Well fluid WHSIP : Well Head Shut In pressure

4.0 REFERENCES The applicable engineering standards and codes are as shown below. Where equal but conflicting requirements are identified between codes and standards, the order of precedence will be. UAE Statutory legislation and regulation inclusive of ADNOC standards and codes

of practice. Project specifications. COMPANY engineering specifications, standards and procedures. BP standards, guidance and practice documents.

International codes and standards.

13/11/2

4.1

4.2

A

N

2014

Laws / Reg

Abu UAE

Saf Min

DeHaz

UAE Reg

Act Env

Reg Reg Reg Reg

ADNOC HSADNOC-C

ADNOC-CADNOC-C

ADNOC-CADNOC-CADNOC-CADNOC-CADNOC-C ADNOC-CADNOC-CADNOC-CADNOC-CADNOC-C ADNOC-CADNOC-CADNOC-CADNOC-CADNOC-C

ADNOC- ADNOC-CADNOC-CADNOC-C

ADNOC-C ADNOC-C

DMAOPCO

PCCDocume

gulations

u Dhabi Em

E Federal Lfety, Prevennistry of Leterminationzards E Federal Lgulations de

of Federvironment: gulations fogulations fogulations fogulation for

SE Manual COPV1-02

COPV1-04 COPV1-05

COPV2-01 COPV2-02 COPV2-04 COPV2-05 COPV2-07

COPV3-01 COPV3-03 COPV3-05 COPV3-08 COPV3-10

CoPV4-01 CoPV4-03 CoPV4-04 CoPV4-08 CoPV4-09 -CoPV4-10

COPV5-01 COPV5-03 COPV5-04

COPV5-06

COPV6-01

HS

DocumentN

entNo.

32

irate Law N

Law No 8-ntive MeasuLabour ann of the Way

Law No 24-1eveloped bral Law N

r the protecr the protecr the AssesHandling H

of codes o Hea

Ass Man HSE

Env Poll Env Wa Env

Fra Occ Occ Occ OH

Fra Fire Per

Mar Divi Saf

Con Risk Out

equ HSE

IdenEqu

SEPHILOSO

No. : AD21

: 3291

291URP001

No 8-1978

1980 Laures, Healthd Social ys and Mea

1999 Proby Federal No 24-1999

ction of air fction of Natussment of EHazardous M

of practicealth, Safety

sessment (Hnagement oE Definition

vironmental lution Prevevironmental ste Managevironmental

mework of cupational Hcupational Hcupational HR Managem

mework of e Risk Assersonal Proterine Transping Operatiofe Handling

ntrol of Majok Assessmetline HSE Duipment E Risk Man

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abour and S and SocialAffairs, M

ans to Prote

otection andEnvironme9 Prote

rom pollutioural Reservnvironment

Materials

and Enviro

HSEIA) Reqof Contractons & Abbrev

Impact Assention and CManageme

ement Risk Asses

OccupationHealth Risk Health Risk Health Risk ment, Noise

Occupationssment (FR

ective Equiport Operatioons Risk Asand Workin

or Accident ent & QuanDesign phil

nagement

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ty assura

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Order No ees against

ment of the Erity based d Developm

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13/11/2

4.3

A

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2014

COMPANYHSE102

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From To Pipeline Nominal Diameter (Inch) Approximate Pipeline length (KM)

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Table-3: Water Injection Pipelines

From To Pipeline Nominal Diameter (Inch) Approximate Pipeline length (KM)

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ADMAOPCODocumentNo. : AD219705SPHY07001 Rev.

NPCCDocumentNo. : 3291URP001 0

13/11/2014 3291URP001Rev0 20OF33

updated to incorporate the EPC phase HSE studies/workshops findings/recommendations.

The Project SHEAMS Register being a live document will be continuously updated for various phases of the project.

8.0 ORIENTATION & EQUIPMENT LAYOUT The layout and orientation of equipments will be configured to minimise the potential of hazard escalation & personnel injury. The orientation will maximize safety and accessibility.

The WHTs will be subject to various activities in a phased manner, suitable provision for lay-down areas, maintainability, accessibility & escape facilities shall be considered in the design. Safety features to be provided in layout will include:

The plant layout should minimize the risk to personnel, protect the environment and assets.

Equipment layout shall keep potential release sources as far from ignition sources as practical to prevent hydrocarbon ignition and fire escalation.

Maximum separation, as far as reasonably practicable, between emergency service system (such as fire water system, emergency power distribution system, communication system, life raft etc.) and hydrocarbon and hazardous chemical containing equipment.

The pig traps will be laid so that the trap door opening will be towards clear area from the platform away from risers and boat landing area. This is to ensure that pig impact damage to the facility is minimized in case of failure of the trap door.

Provide adequate space for safe access of personnel and equipment for drilling, construction, operation and maintenance.

Maintain sufficient means of escape to enable safe evacuation from all parts of platform

Maximise the potential for natural ventilation on platform decks and minimize potential for explosion.

Avoid locating HSECES within the footprint area of crane movement to prevent damage from dropped loads. A dropped object study shall be performed during EPC Stage.

The effect of prevailing winds is to be considered on escaping hydrocarbons or gases from the vents, wells or other equipment.

The emergency shutdown valves on the risers shall be located as close as possible to MSL at a position it can isolate majority of the riser inventory from platform.

The plant layout should have provision of sufficient laydown areas to facilitate the handling & lifting of various equipments.

Provision of guardrails with toe boards outside perimeter of all decks as per COMPANY specification.

From safety perspective, location of the risers within the platform jacket is preferred to minimise the likelihood of external impact/collisions. In case it is not feasible, design shall include measures to protect the risers against damage due to vessel impact.

The installation and orientation of the WHTs shall be such that infield pipeline layout shall not obstruct jack-up rig/ maintenance barge approach and shall minimise pipeline crossing as far as possible This applies to Helicopter approach and departure also.

HSEPHILOSOPHY

ADMAOPCODocumentNo. : AD219705SPHY07001 Rev.

NPCCDocumentNo. : 3291URP001 0

13/11/2014 3291URP001Rev0 21OF33

9.0 PROCESS SAFETY All production system should include safety devices (primary and secondary levels of protection) and have an automatic surface safety system designed to shut down part or all of the production system upon the detection of process upsets or component failure as defined in API RP 14C. Primary level of protection will be provided by ESD system and secondary level by mechanical devices (e.g. relief valve) & safety valve for overpressure protection. For WHTs, topsides and subsea pipelines will be designed fully rated based on the WHSIP to which the system is expected to be exposed. In addition to that, pressure safety devices routed to the relief/vent systems will be used, where applicable, to overcome short term operating problems. The pig trap doors shall have mechanical interlock facility to prevent inadvertent opening of the same under pressure. The design shall incorporate remotely operable valves so that the wellhead and subsea pipeline sections can be quickly isolated in the event of a release due to loss of containment. In addition, each Production Wellhead will have Sub Surface Safety Valve (SSSV), a Surface Safety Valve (SSV) and a Wing Valve (WV) for isolation. The wellhead ICSS is designed to provide the operation interface required for the control and shutdown of Production Wellhead equipment. Flanges, small-bore fittings and similar sources of potential leaks shall be minimised. Due to presence of H2S in the well fluids closed type sample points shall be provided connected to the closed drain header.

10.0 DRAINS, VENTS AND PURGE PROVISION WHTs will be designed with appropriate high point vents and low point drain connections to facilitate maintenance of topside facilities. Topside facilities venting and draining operation will be carried out under operator supervision.

WHTs shall be provided with separate closed drain header and open drain header to collect the drain fluid from different locations. The drain system shall be a gravity-based system collecting to a common drain sump tank. The liquid from drain tanks will be recovered through drain pump. Further, the Drain Sump Tank vent will route all intermittent release of hydrocarbon and toxic gas to a safe location in line with ADMA-OPCO venting Philosophy and ADNOC COPs. The vapours are vented to the atmosphere through the vent line of the drain sump tank to a safe location downwind of the prevailing wind direction. The drum will be designed for deflagration and no flame arrestor will be provided. For further detail refer the Project Vent & Drain Philosophy (Doc No.AD219-705-G-01019). In order to avoid any adverse effect, due to either radiation or dispersion of flammable / toxic gases, a vent radiation and dispersion study will be carried out to finalise the location and height of the vent stack. The location of the vent boom should not obstruct with the rig/ boat approach of the tower. In addition to that, inert gas purging distribution header and connections shall be fitted to facilitate maintenance activities. The launcher/receiver shall be purged before and after inserting/receiving the pig by venting to the vent header. Purging of pig launcher/ receiver shall be carried out with Nitrogen. Nitrogen shall be made available through the boat at WHTs during the pigging operation.

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291URP001

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HSEPHILOSOPHY

ADMAOPCODocumentNo. : AD219705SPHY07001 Rev.

NPCCDocumentNo. : 3291URP001 0

13/11/2014 3291URP001Rev0 23OF33

Equipment layout shall keep potential release sources as far from ignition sources as practical to prevent hydrocarbon ignition and fire escalation

12.0 VENT DISPERSION & RADIATION Vent dispersion & radiation study shall be carried out for the closed drain vent discharge on WHTs 3, 4, 5, 6, 7, 8, and 9. Flare radiation and dispersion study for IGD HAP shall also be updated. Vent dispersion study shall also be conducted for WHT 2 if there is any change in vent load or venting scenario. For the purpose of this study, vent to a safe location will be ensured so that no unacceptable risk are posed to personnel when vent gas is released. Study will cover the cold vent scenario (un-ignited release) to evaluate the impact of H2S and also cover the accident ignition of vent gas to study the radiation impact.

13.0 EMERGENCY SHUTDOWN SYSTEM An Emergency Shutdown (ESD) is a rapid response to protect personnel and equipment from injury or damage resulting from a process excursion or uncontrolled release of hydrocarbon gas or liquid to atmosphere caused by process plant or equipment failure. The objectives of an ESD are to reduce the following risks to tolerable levels:

Harm to people. Environmental damage. Commercial loss, including rebuild cost and cost of lost production.

Emergency Shutdown (ESD) is the primary control measures to avoid escalation of fire and explosion by limiting loss of containment (LOC). With the potential for fire and explosion, the shutdown logic ensures that the equipment in WHTs shutdown to a safe condition and all operational safety permissive are met before it can be reset and restarted. Provision shall be made for emergency shutdown of the individual and/or combination of WHTs from the remote Central Control Room. There are three basic hierarchical levels of shutdown system ESD-0, ESD-1 & ESD-2. They range from a total platform shutdown and power failure to relatively minor, equipment specific process stops. The shutdown systems (ESD-0/ESD-1/ESD-2) will be activated during an emergency, which constitutes a danger to the safety of personnel or an item or equipment. Each wellhead tower will have the following shutdown levels: Emergency Shutdown (ESD-0): An ESD-0 trip is initiated by an abnormal process condition. The intent of an ESD-0 trip is to isolate an individual production well, water injection well, or a portion of the wellhead tower which is operating outside safe limits while trying to keep as much of the remaining wellhead tower operating. A portion of the wellhead tower could include a single well or piece of equipment, a single process or a header on the wellhead tower. In the case of dual string well, the gas lift isolation valve will not be closed unless the Thamama V well is shutdown. For an individual well string shutdown the Gas Lift valve will shut first and then the wing valve.

HSEPHILOSOPHY

ADMAOPCODocumentNo. : AD219705SPHY07001 Rev.

NPCCDocumentNo. : 3291URP001 0

13/11/2014 3291URP001Rev0 24OF33

Emergency Shutdown (ESD-1): Platform shutdown and isolation: An ESD-1 trip at the WHT results in a total WHT production shutdown including gas lift by closing all SSVs, WVs, and XVs on the production wells. The riser ESDV on the production header is closed for outer WHT. The ESDV on the closed drain header to sump is closed. Trips the drain pump. The XV on the drain pump discharge closes. The ESDV on the gas lift header closes. Water injection continues to operate. Trip medium and low pressure HPU pump breakers and trip respective SOVs. An ESD-1 event trips the non-essential power loads in the process area fire zone on the WHT. The UPS system (both AC and DC) batteries, the PCS and telecom AC UPS distribution board 110 V breakers, etc., will remain in service. ESD-1 cascades to ESD-0. Emergency Shutdown (ESD-2): ESD-2 is the highest level of shutdown. The intent of an ESD-2 trip on the WHT is to shutdown the process areas on the WHT. An ESD-2 trip on the WHT will close the SSSVs on all production wells, close the SSVs and WVs on all water injection wells, and trip the drain and HP HPU pump breakers. The UPS system (both AC and DC) batteries, etc., will remain in service (unless an ESD-2.2 event has been initiated on the WHT). ESD-2 cascades to ESD-1. Operating sequence of wellhead valves shall be arranged by ESD system interlocking such that the valves close in the order of SDV (gas lift), WV (production), SSV & SSSV and open in the reverse order. Emergency Shutdown (ESD-2.1): Low low voltage in the UPS will trip the LER building ICSS and telecom AC UPS distribution board 110 V breakers and initiate an ESD-2. Emergency Shutdown (ESD-2.2): Confirmed fire, flammable gas, or toxic gas in the switchgear or LER building or Super Complex ESD 3 will trip upstream and downstream 11kV feeders, UPS battery switch, and initiate an ESD-2. Further details of ESD logics & various initiators for ESD levels shall be referred in the Project ESD Philosophy (Doc. No. AD219-705-G-01022).

14.0 FIRE & GAS SYSTEM Due to the explosive and toxic nature of hydrocarbon liquids and gases, the WHTs will be provided with a fire and gas detection and protection system. Existing ADMA-OPCO philosophy for normally unmanned WHTs will be extended to these new platforms also. Each WHT will be split in two zones for F&G detection, one is the outdoor deck areas and other will be the building area. Each room within the building shall be considered as sub-zones for F&G detection. The fire protection for WHTs will be provided considering burn-down mode in case of major fire. The primary goals of F&G system are:

Detect all hydrocarbon releases and fires at their incipient stage such that hazard to personnel and damage to asset are minimized.

Alert operator to a detected hazard and give information to its approximate location and extent so that timely action can be taken to minimize risk to personnel, assets and the environment.

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HSEPHILOSOPHY

ADMAOPCODocumentNo. : AD219705SPHY07001 Rev.

NPCCDocumentNo. : 3291URP001 0

13/11/2014 3291URP001Rev0 26OF33

The Fire Protection Philosophy will consider automatic isolation of the well and riser by signalling the ESD on confirmed fire or gas detection on the platform. Facility of linking the wellhead F&G system with the drilling rig F&G system or maintenance barge during their presence on platform shall be considered. The construction barge/drilling rig will carry prescribed fire-fighting capability including portable extinguishers and fire water monitors during maintenance/work over activities. FRA study will be performed as a part of this project and the recommendations regarding the active & passive fire protection from the study will be incorporated in the design.

15.1.1 Active Fire protection The firewater protection system goals are to:

Assist in the control of a fire by reliable, timely and effective automatic application of firewater to limit hazard escalation, provide cooling to equipment and to protect personnel.

The fixed dry firewater spray system has been considered as a means of fire protection for the equipment during SIMOPS conjunction with portable fire fighting equipment. There is no permanent fire water pumps provided on WHTs. FW supply shall be from the drilling/work-over rigs during their presence on platform. In case of fire during unmanned operation, the firewater for cooling will be provided by the fire fighting boats. Switchgear room & LER of all WHTs are protected with fire suppression system (NOVEC 1230) system, which will be initiated on detection of confirmed fire. The firewater spray system consists of a dry Cu-Ni (+0.5 mm) header with various sub-branches to spray the firewater on the protected equipments. Design of the fixed water spray system will be in accordance with NFPA 15/BP-GP 24-23 requirements.

15.1.2 Fire Extinguisher The following type of portable fire extinguishers shall be provided on each WHTs to handle the small fires.

9 KG DCP Portable fire extinguisher 50 KG DCP Wheeled fire extinguisher 9 Litre portable foam extinguisher 5 Kg portable CO2 extinguisher

The quantity & location of these extinguishers & other fire fighting & lifesaving equipments shall be marked in the FF, LS & Safety equipments location plan. All extinguishers shall be in accordance with NFPA 10, UL or equivalent approval. The helideck shall be equipped with extinguisher system complying with CAP 437 requirements.

15.1.3 Passive Fire Protection Passive fire protection shall be considered to ensure survivability of critical platform structures and equipment required long duration to give protection from direct heat of a

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ver board sMA, BP andLife jackets

unmanned in the desig

designatedss hazard, s are provid

SEPHILOSO

No. : AD21

: 3291

291URP001

early markeape routes pt be obstruch alternate rg shall not bot be greaters shall opee restricted

ways shoulshortest rou

cape routeser level thanother placecess ladde

by HSE c

ation from tow away typof each WHe raft shall b

tion is not amean of evoat. an alternativ

conditions.life jackets ituations. Ad SOLAS res equivalent

nature of gn. Howeve

d area whtake roll caded on the

OPHY

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1URP001

1Rev0

ed having npath. cted in any routes. be greater thr than 5m.

en in the direunduly by t

d allow the ute to mustes shall not n one from wes where rs shall be

consultant to

he Wellheape life raftsHTs. Life rabe finalized

accessible acuation sh

ve means o. MEDEVAC& BA sets

All lifesavingequirementst to 150% of

operation, er Muster Po

here persoall, and presump tank

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0

non-slip surf

way. No si

han 3m and

ection of sathe presenc

transit of ster points. direct escawhere they regular accinstalled. H

o verify the

ad Towers s considerinaft shall bethrough EE

in emergenhall be at th

of evacuatioC will be thrshall be str

g & rescue s. f POB shall

no temporaoint shall be

onnel can pare to evadeck. Eme

Rev.

0

rface and w

ingle accide

d for other li

afety (escapce of doorw

tretcher.

aping persostart. cess may Heat shield

e EER prov

will be throng 2x100% e provided wERA study.

ncy or becahe boat lan

on based orough helicorategically lo

equipment

l also be pro

ary refuge oe considere

safely assacuate a faergency com

28OF33

with no acce

ent should b

imited acce

pe). The widways includin

onnel throug

be requireat stair ca

visions durin

ough life racapacity a

with SART

ause of rougnding area

on emergenopter. ocated on thts shall be

ovided on th

on the WHTed at strateg

semble (0.7acility. Mustmmunicatio

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be

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aft. are

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