3291-U-RP-001 Rev 0.pdf
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HSE PHILOSOPHY
ADMA‐OPCO Document No. : AD219‐705‐S‐PHY 07001
Rev.
NPCC Document No.
0
: 3291‐U‐RP‐001
REVISION CONTROL SHEET
Rev No.
Date
Rev. Shts.
A
02/09/2014
All
B
21/09/2014
All
0
02/11/2014
All
Details of Revision Issued For IDC Issued for Review/Approval COMPANY Comments Incorporated and Issued for Design
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ADMA‐OPCO Document N No. : AD21 19‐705‐S‐PHYY 07001
Rev.
NPCC Documeent No.
0 0
: 3291 1‐U‐RP‐001
TAB BLE OF CO ONTENTS 1.0
IN NTRODUCTION ...................................................................................................................................... 5
1 1.1
EPC Package-1 – Wellhead Towers and a Pipelin nes ....................................................... 5
1 1.2
EPC Package-2 – NASR Super Comp plex (NSSC C) .......................................................... 5
1 1.3
EPC Package-3 – Onshore e Modificattions at DA AS Island ............................................ 6
2.0
P PROJECT OV VERVIEW ............................................................................................................................ 6
3.0
D DEFINITIONS S & ABBREV VIATIONS ......................................................................................................... 6
4.0
5.0
3 3.1
Defin nitions ................................................................................................................................. 6
3 3.2
Abbre eviations ........................................................................................................................... 7
R REFERENCE ES ......................................................................................................................................... 8
4 4.1
Laws s / Regulations ................................................................................................................. 9
4 4.2
ADNO OC HSE Ma anual of co odes of pra actice ....................................................................... 9
4 4.3
COMPANY (ADM MA–OPCO O) Standard ds, Regulations and Guidelines . G ................... 10
4 4.4
Proje ect Specific cations & Philosophie P es ........................................................................... 11
4 4.5
Amerrican Petro oleum Instittute (API) ................................................................................. 11
4 4.6
Britis sh Petroleu um (BP) Re ecommende ed Practice es and Spe ecifications s ................. 11
4 4.7
Natio onal Fire Prrotection Association A n (NFPA) ............................................................... 12
4 4.8
Intern national Ele ectro techn nical Comm mission (IE EC) ..................................................... 12
4 4.9
Otherr Codes ............................................................................................................................ 12
P PROJECT HS SE PHILOSO OPHY ............................................................................................................. 13
5 5.1 6.0
7.0
Hazard Manage ement Philo osophy ..................................................................................... 13
F FACILITIES DESCRIPTIO D ON .................................................................................................................. 14
6 6.1
Wellh head Towers (WHTs) .................................................................................................... 14
6 6.2
Wellh head Towers (WHT-3, 4, 5, 6, 7, 8 and 9) ................................................................ 16
6 6.3
Subs sea Pipeline es ................................................................................................................... 16
G GENERAL SA AFETY REQ QUIREMENT T .................................................................................................. 18
7 7.1
Inherrent Safety ....................................................................................................................... 18
7 7.2
Form mal Safety Studies S & Design D Rev views ..................................................................... 18
7 7.3
Safetty Engineerring Delive erables ...................................................................................... 19
7 7.4
SHEA AMS Register ................................................................................................................. 19
8.0
O ORIENTATIO ON & EQUIPMENT LAYO OUT ............................................................................................ 20
9.0
P PROCESS SA AFETY .............................................................................................................................. 21
10.0 D DRAINS, VEN NTS AND PU URGE PROV VISION ....................................................................................... 21 11.0 H HAZARDOUS S AREA CLA ASSIFICATION ............................................................................................. 22
1 11.1 Equip pment Sele ection ............................................................................................................ 22
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: 3291 1‐U‐RP‐001
1 11.2 Ignition Sources .................................................................................................................... 22 12.0 V VENT DISPERSION & RA ADIATION ...................................................................................................... 23 13.0 E EMERGENCY Y SHUTDOW WN SYSTEM M ................................................................................................. 23 14.0 F FIRE & GAS SYSTEM .......................................................................................................................... 24 15.0 E EMERGENCY Y POWER ......................................................................................................................... 25
1 15.1 Fire Protection P System ........................................................................................................ 25 16.0 E ESCAPE, EV VACUATION & RESCUE .................................................................................................. 27
1 16.1 Escape ...................................................................................................................................... 27 1 16.2 Evacuation .............................................................................................................................. 28 1 16.3 Temp porary Refu uge ................................................................................................................ 28 1 16.4 Muste er Point ........................................................................................................................... 28 1 16.5 Safetty Sign .............................................................................................................................. 29 1 16.6 Emerrgency Res sponse .......................................................................................................... 29 17.0 P PERSONNEL L PROTECTION & LIFE SAVING EQ QUIPMENTS S .......................................................... 29
1 17.1 Mach hine Safegu uarding ......................................................................................................... 30 18.0 S SAFETY PHILOSOPHY OF O CONSTR RUCTION/SIMOPS .................................................................... 30 19.0 IN NTEGRITY ASSURANC A E .................................................................................................................... 30 20.0 E ENVIRONME ENTAL MANA AGEMENT SYSTEM S .................................................................................... 30
2 20.1 Disch harges to Marine ........ M ................................................................................................... 31 2 20.2 Disch harges to Atmospher A re ................................................................................................ 31 21.0 O OCCUPATIO ONAL HEALT TH PHILOSO OPHY ......................................................................................... 32
2 21.1 Noise e ......................................................................................................................................... 32 22.0 H HYDROGEN SULPHIDE ....................................................................................................................... 32 23.0 C CHEMICAL EXPOSURE E ....................................................................................................................... 32 24.0 C COMMUNICA ATION & NA AVIGATION SYSTEM S .................................................................................... 32
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ADMA‐OPCO Document N No. : AD21 19‐705‐S‐PHYY 07001
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: 3291 1‐U‐RP‐001
1.0
INTRODU UCTION ADMA-OPC CO is developing the NASR N offsh hore oil field d located ab bout 131 km m North We est of Abu Dha abi in the Arabian A Gulf and abou ut 30 km North East of o the Umm m Shaif Sup per Complex (U USSC). The NASR R field will be develo oped to se ecure an annual a ave erage production of 65 6 MSTBOPD D of crude oil. This prod duction will be achieved d in two suc ccessive ph hases: Pha ase-I - Earlyy Production n Scheme (EPS) ( with minimal m faccilities in the e NASR Field, utilizzing ABK facilities f for processing g Phase-I production, p while sourrcing injectio on water through a new 20”” trunk line from Umm m Shaif Super Comple ex (USSC) – WH HT 12A (US--12A) to the e NASR Ma anifold Towe er (NSMFT)). Pha ase-II - Fu ull Field De evelopmentt (NSFFD) producing to DAS Island, while sourcing injecttion water via v the sam me Phase-II 20” trunk line from US-12A, an nd exporting exce ess dry gas to Umm Sh haif Super Complex C IGD D HAP. Phase-I de evelopment of the NAS SR field consists of drrilling 18 prroducers an nd 12 injecttor wells, and requires r insstallation of two Wellhe ead Towers (WHTs 1 and a 2), a Ma anifold Tow wer (NSMFT), a bridge co onnecting WHT1 W to NS SMFT, infie eld (oil and water) pipelines, and a well fluid pipeline p to tie-in t to AB BK facilities.. Phase-I developmen d nt will produ uce about 22 2 MSTBOPD D for three e to four years befo ore commissioning Phase-II. P P Phase-I EP PS development is by Larrsen and To oubro. Phase-II is this projectt, the NASR R Full Field Developme ent Project (NSFFD), ( w which includes Greenfield, Brownfield d, and Powe er from DAS Island wo ork. For ease of execu ution & bettter control / mo onitoring, Phase-II is divided into 3 separate EPC Packa ages.
1.1
EPC Packa age-1 – We ellhead Tow wers and P Pipelines The brief sc cope of EPC C Package--1 includes;; 1) 7 nos. of ne ew Wellhea ad Towers (W WHTs 3, 4, 5, 6, 7, 8 & 9) n WHTs and existin ng WHT-2 & 2) New Riserrs & Infield pipelines between new NSMFT ne (MOL) frrom NSSC to DAS up to 3) 2 nos. of new Trunk lines, a 16” Main Oil Lin G Line (E EPL) from N NSSC to IGDthe first flange of valvve pit & a 10” Export Gas HAP at USSC 4) Brownfield modificatio ons will incclude insta alling Riserss & J-tube e on existin ng W NSMFT & WHT-2 5) Brownfield modificatio ons will also o include Riser, Tie-ins s & Receive er installatio on P and Tie-in n as per dettailed scope e of work at IGD-HAP
1.2
EPC Packa age-2 – NA ASR Super Complex (NSSC) In general, EPC Pacckage-2 (n not part of this contrract) includ des the NS SSC process platforms, flares, bridges, bridge e support sstructures, disposal d we ell, all infie eld composite cables, pow wer from DAS, USSC Power Disstribution Platform, Bro ownfield mo odifications at NSMFT, WHT1, W and WHT2, W and offshore fin nal commiss sioning of all facilities. T This scope of work shall be b executed d by OTHERS
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1.3
EPC Packa age-3 – Onshore Mod difications at DAS Isla and In general, EPC Package-3 (not part of this contract) in ncludes all Brownfield modifications L piping and d tie-in to th he on DAS Islland Processsing Facility and utilitties and onshore MOL associated facilities on n DAS Islan nd excluding g the PDAS S work. Thiss scope of work w shall be b b OTHERS S. executed by ADMA-OPC CO has aw warded NPC CC the EPC works (D Design, Eng gineering, Procuremen P nt, Fabrication n, Construcction, Installation & Commission C ning) for Package-1 P scope und der Contract-17 75706
2.0
PROJECT T OVERVIE EW EPC packa age 1 is thiss project, consists c of seven s new wellhead to owers, all risers, all ne ew infield pipelines, the main m oil exp port line to DAS D Island (MOL), the e excess ga as export lin ne (EGL) to IG GD HAP, an nd Brownfie eld riser and J-tube ins stallations at a WHT2 an nd the NAS SR Manifold To ower (NSMFT), and Brrownfield modificationss at IGD HA AP. Greenfield Scope • Eng gineering, procurementt, installation, and com mmissioning of seven New N Wellhea ad Tow wers (WHTss 3, 4, 5 6, 7, 7 8, and 9). • Eng gineering, procuremen p nt, installatio on, and commissionin ng of all rissers and ne ew infie eld pipeline es (oil produ uction, gass lift, and water w injectiion) betwee en the abovve new w WHTs an nd NSMFT also includ ding a new w infield gas s lift pipelin ne and rise ers betw ween NSMF FT and WHT2. • Eng gineering, procuremen p nt, installation and co ommissionin ng of the complete c 16” main oil line (M MOL) from NASR N Supe er Complex (NSSC) up to the interrface point on o S Island at first f flange of o valve pit.. DAS • Eng gineering, procuremen p nt, installatio on, and co ommissionin ng of the complete c 10” excess gas exxport line (E EGL) from NSSC to IG GD HAP including the e riser and all wnfield mod difications and a tie-ins required r at IGD I HAP att USSC. Brow • Com mplete testing of all inffield pipelin nes, the 16”” MOL from m NSMFT to o DAS Islan nd, and d the 10” EG GL from NS SMFT to IG GD HAP inc cluding flooding, clean ning, gaugin ng, calip per pigging g, hydro te esting, basseline intelligent piggiing, pre-co ommissionin ng, com mmissioning g, and long-term preserrvation (mothballing). Brownfield Scope • Rise er and J-tub be Installatio ons at WHT T2. • Rise er and J-tub be Installatio ons at NSM MFT. • Rise er installatio on and asssociated sysstems inclu uding platfo orm piping and a tie-ins to the existing gas and cond densate lines, anchoring, and pig receiver r faccilities on IG GD P in USSC. HAP
3.0
DEFINITIO ONS & AB BBREVIAT TIONS For the purrpose of this documen nt, the words and expressions listted below shall s have th he meanings assigned a them as follow ws which are in compliance with ADNOC-Co A oP-V1-05:
3.1
Definitions s PROJECT T
:
N NASR Full Field F Develo opment Pro oject E EPC Works for Package e-1
COMPANY Y
:
A ADMA-OPC O
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3.2
EPC CON NTRACTOR R
:
N National Pettroleum Con nstruction Company C (N NPCC)
NSULTANT HSE CON
:
Agency who A o is respo onsible for execution of HSE studies for th he Project.
Abbreviations ADMA-OPCO ADNOC 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 HSECES S HSEIA HSEMS HSSD HVACP IALA
: : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : :
ICAO ICP ICSS IPCMS IP IVB
: : : : : :
Abu u Dhabi Marrine Operatting Company Abu u Dhabi Nattional Oil Co ompany American Petro oleum Instittute As Low L As Rea asonably Prracticable Atm mospheres Explosive E Barrrels of Oil Per P Day Besst Available Technologyy British Petroleu um Con ntrol of Majo or Accident Hazards Com mputational Fluid Dyna amics Cod de of Practicce Civiil Aviation Authority A Pu ublication Emergency Sh hutdown Esccape, Evacu uation and Rescue R Ana alysis Envvironmental Impact Asssessment Elecctrical Conttrol and Mon nitoring Sysstem Envvironmental Impact Sta atement Emergency Po osition Indicating Radio o Beacons Emergency Syystems Survvivability An nalysis Emergency Re esponse Pla an Front End Engineering & Design Fulll Field Deve elopment Fed deral Enviro onmental Ag gency Fire e Risk Assessment Hyd drogen Sulp phide Hea alth, Safety and Environment Hazzard Identification Hazzard and Op perability HSE E Critical Eq quipment and Systemss Hea alth Safety & Environm mental Impacct Assessm ment Hea alth, Safety and Environmental Ma anagement System High Sensitivityy Smoke De etection Hea ating, Ventillation, Air Conditioning C g and Presssurization Inte ernational Association A o Marine Aids of A to Nav vigation and d Lighthouse Authoritie es Inte ernational Civil C Aviation n Organizatiion Inde ependent Competent C P Person Inte egrated Con ntrol and Sa afety System ms Inte egrated Prottection Con ntrol & Monitoring Syste em Insttitute of Petroleum/Ingrress Protection Inde ependent Verification V Body B
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LOC LEL LER MAH MACP MEDVAC MOL NFPA OHRA OH PAGA PHA PMS POB P&ID PPE PPM QRA RTU SART SOW SCADA SIMOPS SOLAS TR UPS US UAE USSC VHF VOIP WHT WI WF WHSIP
4.0
: : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : :
Loss of Containment Lower Explosive Limit Local Equipment Room Major Accident Hazard Manual Alarm Call Point Medical Evacuation Main Oil Line National Fire Protection Association Occupational Health Risk Assessment Occupational Health Public Address & General Alarm Process Hazard Analysis Power Management System Person On Board Piping and Instrumentation Diagram Personal Protective Equipment’s Parts Per Million Quantitative Risk Assessment Remote Telemetry Unit Search & Rescue Transponder Scope of Work Supervisory Control and Data Acquisition Simultaneous Operations Safety of Life at Sea Temporary Refuge Uninterrupted Power Supply Umm Shaif United Arab Emirates Umm Shaif Super Complex Very High Frequency Voice Over Internet Protocol Well Head Tower Water Injection Well fluid Well Head Shut In pressure
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.
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4.1
Laws / Reg gulations •
Abu u Dhabi Emirate Law No N 8-1978 – “Conserva ation of Petrroleum Reso ources”
•
UAE E Federal Law L No 8-1980 – “La abour and Social S Affaires”, Part V V– “Industrrial Saffety, Preven ntive Measu ures, Health and Sociall Care for Workers” W Min nistry of Labour L and Social Affairs, Ministerial M Order No 32-1982 – “De etermination n of the Wayys and Mea ans to Prote ect Employe ees against Occupation nal Haz zards” UAE E Federal Law L No 24-1 1999 – “Pro otection and d Developm ment of the Environmen E nt” Reg gulations de eveloped by b Federal Environmental Authorrity based on Executivve Act of Federral Law No N 24-1999 9 – “Prote ection and d Developm ment of th he Envvironment”: Reg gulations for the protec ction of air from pollutio on Reg gulations for the protec ction of Natu ural Reserv vations (FEA A Board Approved) Reg gulations for the Assesssment of Environmenttal Effects of o Installations Reg gulation for Handling Hazardous H M Materials
• • • • • • • 4.2
ADNOC HS SE Manual of codes of o practice ADNOC-C COPV1-02
Hea alth, Safety and Environmental Im mpact
ADNOC-C COPV1-04 ADNOC-C COPV1-05
Asssessment (H HSEIA) Req quirements Man nagement of o Contracto or HSE HSE E Definition ns & Abbrev viations
ADNOC-C COPV2-01 ADNOC-C COPV2-02 ADNOC-C COPV2-04 ADNOC-C COPV2-05 ADNOC-C COPV2-07
Envvironmental Impact Asssessment Polllution Preve ention and Control C Envvironmental Manageme ent System Waste Manage ement Envvironmental Risk Assesssment
COPV3-01 ADNOC-C ADNOC-C COPV3-03 ADNOC-C COPV3-05 ADNOC-C COPV3-08 ADNOC-C COPV3-10
Framework of Occupation nal Health Risk R Manage ement H Risk Manageme ent–Genera al Occcupational Health Occcupational Health H Risk Manageme ent–Genera al Occcupational Health H Risk Assessmen nt OHR Managem ment, Noise e control & Hearing H Con nservancy
CoPV4-01 ADNOC-C ADNOC-C CoPV4-03 ADNOC-C CoPV4-04 ADNOC-C CoPV4-08 ADNOC-C CoPV4-09 ADNOC--CoPV4-10
Framework of Occupation nal Safety Risk R Manage ement Fire e Risk Assessment (FR RA) Perrsonal Prote ective Equip pment Marrine Transport Operatio on, Risk Assessment & Control Diviing Operatio ons Risk Asssessment & Control Saffe Handling and Workin ng with Hyd drogen Sulp phide
COPV5-01 ADNOC-C ADNOC-C COPV5-03 ADNOC-C COPV5-04
Con ntrol of Majo or Accident Hazards (C COMAH) Riskk Assessme ent & Quantitative Risk k Assessme ent Outtline HSE Design D phillosophy forr major Hazard Plant & equ uipment HSE E Risk Man nagement
ADNOC-C COPV5-06 COPV6-01 ADNOC-C
Iden ntification & Integritty Equ uipment and d Systems
assurance
of
H HSE
Criticcal
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4.3
COMPANY Y (ADMA–O OPCO) Stan ndards, Re egulations and a Guidellines HSE–102 2
ADMA-OPC CO Health, Safety, Env vironment & Environmental Policyy
HSE–102 2 HSE–108 8 HSE–109 9 HSE–110 0
HSE Regullations Man nual Hearing Co onservation Policy Environmental Management Systtem Manual HSE Management Sysstem
7 HSE–207 HSE–208 8 HSE–212 2 HSE–308 8 HSE–312 2 HSE–316 6 HSE–319 9
HSE Philossophy & Pla an for projeccts Criteria for Risk Tolera ability nagement Strategy S Pla an Waste Man Area Class sification Pro ocedures Medical Ev vacuation Prrocedures Occupation nal Health Assessment A t Procedure e PHSER Pro ocedures (B BP ETP GP P 48-1)
2 HSE–402
Guidelines on HSE Ma anagement System forr Contractorrs
3 HSE–533
Environmental Management
GDL-004 GDL-005 GDL-006
Guidelines for HAZID Study Guidelines for HAZOP P Study Guideline for f Precomisssioning, Commissioniing and Hand-over of Projects es Guidelines for Project Deliverable ayout Guidelines for Plant La ation of Hazzardous Are ea Classifica ation drawin ng Guidelines for prepara ments and Docum Preparation n of Registe er of Safety related dev vices Guidelines for Manage ement of Ch hange for Projects P Guidelines for Integrityy Requirement for Projects e Connections of Piping g and Presssure Vessels Small Bore Specificatio on for Materrial for Sourr Service Engineering Specificattion for QA and QC Re equirementss uction Works for Constru Requireme ents for Con ntractors Qu uality System ms On Majo or Projects Specificatio on for Water Quality for Hydrostatic testing Specificatio on for Desig gn Criteria for f Fixed Offfshore Stee el structure Engineering Specificattion for The ermal Insula ation (Hot & ping and Eq quipment Cold) of Pip Specificatio on of Mecha anical Desig gn Criteria- Part1-Pipin ng Systems on for Proce ess Design Criteria Specificatio Electrical Design D Crite eria Control & In nstrumentation Design n Criteria Electrical In nstallation Work W Specificatio on for Piping g Class Specificatio on for Fire & Gas detecction System m for Offshore on for Drain nage System m Specificatio Submarine Pipeline Syystem
GDL-009 GDL-016 GDL-017 GDL-018 GDL-025 GDL-036 CP-111 SP-1000 SP-1007 SP-1009 SP-1021 SP-1030 SP-1028 SP-1050 SP-1060 SP 1080 SP-1070 SP-1083 SP-1131 SP-1134 SP-1145 SP-1046
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Project Sp pecification ns & Philos sophies AD219-7 705-S-PHY--07002 AD219-7 705-S-PHY--07003 AD219-7 705-S-PHY--01019 AD219-7 705-G-0102 22 AD219-7 705-S-PHY--07024 AD219-7 705-S-RPT--07017 AD219-7 705-G-0505 52 AD219-7 705-G-0505 51
4.5
American Petroleum Institute (A API) API RP 2FB 2 API RP 14C
4.6
nmental Pro otection Philosophy Environ Fire Pro otection Philosophy Vent & Drain Philo osophy ESD Ph hilosophy EER Ph hilosophy FRA Sttudy Telecom mmunicatio on System Philosophy P Telecom mmunicatio on System Design D Basiis
Recommen nded Practicce for the Design D of Offshore Faccilities again nst fire & blast loading. nded Practicce for Analyysis, Design n, Installatio on Recommen and testing g of basic Su urface Safe ety Systemss for Offshore Productio on Platforms
API RP 14G
Recommen nded Practice for fire e Prevention and control on ope en Type Offsh hore Producction Platforms
API RP 14J
Recommen nded Practtice for Design D and d Hazard Analysis for f Offshore Production Facilities. F
API RP 14F
Design and d Installation of Electrical System ms for Fixed and Floatin ng Offshore Petroleum P F Facilities forr Unclassifie ed and Cla ass I, Divisio on 1, and Divission 2Locattions.
API RP 55 5
Oil & Gas Producing P a Processsing Plant In and nvolving H2S
API RP 505 5
Recommen nded Practicces for Classsification of o Locationss for Electrical In nstallationss at Petroleum Facilitie es Classifie ed as Classs I, Zone 0, Zone 1 and Zo one 2
API RP 521 5
Guide for Pressure P Re elieving and d Depressurrization Sysstems
British Pettroleum (BP) Recomm mended Pra actices and d Specifica ations BP GP 24 4-23 BP GP 24 4-24 BP GN 44 4-100 BP GP 24 4-20 BP GP 24 4-21 BP GP 15 5-01 BP-GIS-1 15-11 BP-GP-04 4-10 BP-GP-44 4-70 BP-GP-30-76 BP-GP-52-10 BP-GP-52-20 BP-GP-48-01
Guidance on o Active Fiire Protectio on – Offsho ore Guidance on o Practice for Passive e Fire Protection – Offsshore Offshore Fa acilities Layyout Guidance on o Practice for Fire & explosion Hazard H Management for f offshore faccilities Guidance on o Practice for Fire Hazard Analyssis Guide on Practise P for Noise Conttrol Noise contrrol for Grou up Instructio on Supply Guidance On O Practise e for Drainag ge System Guidance & Practise for f overpresssure protec ction system m. Guidance on Practice e for Safety Instrume ented Systems (SIS) – ent of the Prrocess Req quirements Developme Insulation-G Group Pracctice Guidance on o Practice for Passive e Fire Protection HSSE Review of Proje ects (PHSER)
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BP-GP-30-85 12-12 BP GS 11 BP GS 13 30-10 4.7
Guidance on o Practicess for Fire & Gas Detection Requireme ent for Flame-Retardan nt and Fire- Resistant Cables C Specificatio on for the Supply of Firre and Gas Systems
National Fire Protecttion Association (NFP PA) NFPA 10 NFPA 12 NFPA 13 NFPA 15 NFPA 20 NFPA 25 NFPA 70 NFPA 72 NFPA 2001
4.8
nal Electro technical Commissio C on (IEC) Internation IEC 6033 31 IEC 6033 32 IEC 6052 29 IEC 6007 79 IEC 6150 08 IEC 61511
4.9
e Extinguish hers Standard for Portable Fire C dioxiide Extinguishing Syste em Standard for Carbon nstallation of o Sprinkler Systems Standard for In W Sprayy Fixed Systtems for Standard for Water e Protection n Fire Standard for Installation n of Statiionary Pum mps for fiire Protection nspection, Testing T and d Maintenance of Watter Standard for In otection Sys stems Bassed Fire Pro Nattional Electrrical Code Nattional Fire Alarm A Code Standard on clean fire exttinguishing system Tesst for Electrical Cables under Fire Conditions– – Circcuit Integrityy Tesst for Electrical Cables under Fire Conditions – Flam me Spread Deg gree of Prottection prov vided by encclosures (IP P Cod de) Elecctrical Appa aratus for Exxplosive Ga as Atmosph heres Fun nctional Saffety of Electtrical / Electtronic / Programmable e Electronic Safety Rela ated System ms nctional Saffety – Safetyy Instrumen nted System ms Fun for the t Processs Industry Centre C
Other Codes IP Part 15 5 3rd edition n SOLAS ATEX Dirrective/94/9 9/EC IALA ICAO CAP 437
Area Classification Code for Installation ns handlin ng mmable Flu uids Flam Inte ernational Convention C f Safety of for o Life at Sea a (SOLAS) Equ uipment an nd Protective System m Intended d for use in Potentially Exp plosive Atmo osphere A Recommendations on o marking of offshore structures IALA Inte ernational Civil C Aviation n Organizatiion, Annex 14 Offsshore Heliccopter Landing Areas s: A Guide e to Criteria, Reccommended d Minimum Standard and a Best Pra actice
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PROJECT T HSE PHIILOSOPHY Y The princcipal objectivve of HSE philosophy p is to: • Provide a fram mework for the develo opment of Project spe ecific HSE Manageme ent stems. Sys • Deffine the set of guiding principles p byy which Pro ojects will prromote HSE E goals in th he dessign, constru uction, commissioning and hand over o of faciliities. The aim is i to ensure e that the de esign of the e proposed new develo opments red duces the risk to person nnel, assetss and enviro onment to “As Low Ass Reasonab bly Practica able (ALAR RP) level”. ations, ADN NOC Code es of Prcticce, This aim will be acchieved by applying UAE regula ent System and BP Re ecommende ed Practice es as detaile ed ADMA-OPCO HSE Manageme in this document coupled with h various safety s stud dies, underttaken durin ng the Dettail Engineering Stage. The phillosophy fo ocuses on the features of the e installatio on that e ensures HS SE requireme ents are met m by incorporating appropriate a safety mea asures/systtems into th he design ass outlined below: • • • • • • • • •
Fore emost acco ount will be taken to the e health and d safety of employees, e , and all oth her third d party perssonnel who o may be afffected dire ectly or indirrectly by the changes to prod duction activities. Proper regardss will be given to the conservatio on of the natural n enviironment an nd al amenitiess, implemen nting the policy of “no harm h to the environmen nt”. loca The e protection of all assetts shall be ensured. e The e design shall s recogn nize the possibility p of o all haza ards in the e facility an nd elim minate/mitiga ate the risk k by identifyying, analyssing and prroviding me eans to eith her elim minate or red duce the residual riskss to ALARP.. New w facilities will w employ materials m th hat are suita able for the planned se ervice. by The e potential loss of con ntainment ((LOC) of hydrocarbon h ns will be minimized m app propriate sellection of materials m and d provisionss of isolation, shutdown ns etc. by Elim mination / Minimization M n of the sprread of spillls and leakks will be considered c prov vision of the e appropriatte containm ment measures. Ade equate mea ans of escap pe, evacuation and res scue will be provided The e overall ob bjective is to develop p the desig gn based on o the bestt engineerin ng prac ctices, minimizing riskks to person nnel and da amage to assets, a environment an nd Com mpany’s rep putation.
This philo osophy com mpliments ADMA-OPC A CO safety regulations, r , managem ment system ms, emergenccy proced dures, and d engineerring standards that contain the detaile ed arrangem ments for implementatio on and follo ow-up of the e COMPANY Y HSE Philo osophy. 5.1
Hazard Managemen M nt Philosop phy The role of this pro ocess is to support efffectively th he engineerring design n activities by identifying g and unde erstanding th he hazards, their associated risk levels l and assessing a th he HSE perfformance of o the development. The processs shall be governed g byy COMPAN NY HSEMS. The haza ard management proc cess will ensure that a safe de esign is ach hieved which minimisess the loss and a damage e to personn nel, property y and enviro onment.
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The main n hazard associated a with the Wellhead W T Tower is du ue to hand dling of hig ghpressure hydrocarbo on fluids con ntaining H2S S. LOC eve ents would possibly p ressult in fire an nd explosion n hazard, in case of ign nition. Un-ig gnited releasse could als so have toxxic impact du ue to presen nce of hydro ogen sulphid de. Due to presence p off large num mber of flan nges, valve es, fittings etc. e associa ated with th he wellheadss towers, a number of potential leak source may m exist. Major/Catastrophic release r or a fire/explossion event can c result due to a rele ease involvin ng the wellh heads (blow wouts) and d import/exp port risers as they have h large hydrocarbo on inventorie es. Therefore e, potential for escalattion of haza ardous even nts exists unless u interfference takes place, byy isolating the t leaking section, ap pplication of o fire water and activation of F& &G detection system. A numberr of risk based b safe ety studies s used to confirm th he effectiven ness of the proposed engineering e g solution fo or the management off risks on th he new facilities. ADNO OC/ADMA-O OPCO risk acceptability criteria shall s be use ed to confirrm Risk Man nagement Strategy. S The steps s adopted in n hazard managementt are listed below b in ord der of prioritty: • Id dentify Haza ard • Elliminate Hazard • Reduce Haza ard Severityy / Likelihoo od • Se egregation / Separation • Pa assive Fire Protection • Acctive Fire prrotection • Prrocedural and Persona al Protective e Safeguard ding. • Em mergency Managemen M nt • Risk Contingency Plann ning • Risk Accepta ability. During the EPC Stag ge, a numbe er of safetyy studies will be carried d out or updated from th he age to: FEED sta • • • •
En nsure that the require ements of th his philosop phy have been b incorp porated in th he de esign. En nable confid dent and infformed deccision makin ng in the devvelopment of o the facilitty. En nable the demonstratio on of acceptable risk and risk redu uction. En nsure risk cost beneffit is achievved by a ju ustifiable exxpenditure for propose ed mitigation m me easures.
6.0
FACILITIES DESC CRIPTION
6.1
Wellhead d Towers (W WHTs) There are e nine (9) WHTs und der the sco ope of the NASR proje ect. Two of the WHT Ts (WHT-1 and a 2) are installed under Phase –I. – Phase-I development for WHT T 1 and 2 will w produce a 22 MSTBOPD startin ng in 2014 ffor 4 years. Phase-II is the Fulll Field Devvelopment (FFD). FF FD is expected to have a platea au on rate of 65 6 MSTBO OPD sustain ned for 8 years. y Seven new WHTs W will be b productio installed and additio onal infield pipelines p will be laid. These pipe elines will in nclude gas lift n of the nine e wellhead towers. A gas lift pipeline will no ot be laid to o WHT-7, but b for seven the WHT T-7 top side piping will w have future space e provisionss. Water injection an nd productio on fluid pipelines will be e laid for WH HTs 3 throu ugh 9 underr FFD.
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The nine (9) wellhea ad towers (2 – EPS, 7 – FFD) arre connecte ed to the NA ASR Manifo old NSMFT). WHT-1 W is bridge conn nected to NSMFT. N Pip pelines dire ectly conne ect Tower (N WHTs 2, 5, 6, 7 & 9. WHT 3 iss connected d using WHT T-2 as an in ntermediate e, as is WHT T4 T-5 as the in ntermediate e and WHT--8 with WHT T-9 as the intermediate i e (i.e. WHT T-2 with WHT & 3, WHT T-5 & 4 and d WHT-9 & 8 are paire ed). Produc ction, lift gass and injecttion water pig p launcherss and rece eivers are minimized where pos ssible throu ugh the use of throug gh pigging of the interm mediate platfforms. A schema atic of the fiield layout of o the wellhe ead towers is provided d below:
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All wellhe ead towerss have pro oduction, water w injection and ga as lift facilities with th he exception n of WHT-7 7. WHT-7 will w have prroduction and water in njection faccilities, but no n gas lift fa acilities. Lifft gas is re equired for production of the Tha amama V reservoir r an nd WHT-7 will w not have e Thamama a V productiion. Space e is reserved d for future expansion of lift gas fa acilities on WHT-7. The T seven (7) new WHTs are eq quipped witth Multiphase Flow Metters and co onventional manifolds for online well testing g. The WH HTs 1 and 2 under EP PS are equipped with Multiport M Se elector Man nifold and multiphase m f flow meter for f online testing. We ellhead towe ers are de esigned for unmanned d operation with remo ote peration from super complex. control op The WHT Ts are proviided with a drain sump p tank and a vent collection with stack s system ms to allow the t top side e pipelines blowdown and to faccilitate perio odic maintenance. Ve ent dispersion analysis shall s be carried out to confirm he eight require ement for th he vent stack he WHT wo orking areas. The WH HT vents are a to meet H2S and hyydrocarbon LEL on th approxim mately 5 m above a the he elideck. 6.2
d Towers (W WHT-3, 4, 5, 5 6, 7, 8 an nd 9) Wellhead New wellh head towerss (WHT-3, 4, 4 5, 6, 7, 8 & 9) shall consist c of fo ollowing ma ain facilities: • • • • • • • • • • • • • • • • • • •
6.3
Conventional Production n and Test Manifold M Multi-Phase M Flow Meter Prroduction Pig P Launche er on WHT-3 3, 4, 6, 7 & 8 Gas Lift Rece eiver on WH HT-3, 4, 6 & 8 (future space s provis sion on WH HT-7) Water W Injectio on Receiver on WHT-3 3, 4, 5, 6, 7,, 8 & 9 Water W Injectio on Launche er on WHT-5 & 9 Gas Lift Systtem on all WHTs W exce ept WHT-7 (Future spa ace provisio on for lift gas acilities on WHT-7) W fa Water W Injectio on system Ve ent and Dra ain System Drain Sump Tank T Drain Pump An nnulus Leakk Measurem ment System m Corrosion Inh hibitor Injecction Packag ge Down-hole Corrosion C In nhibitor Pacckage (For Gas Lift Sy ystem) with h IRCD on all WHTs W excep pt WHT-7 Down-hole Corrosion C In nhibitor Pacckage (Forr Capillary Injection) with w IRCD on o WHT-3 W &4 Hy ydrate Inhib bitor Injectio on Package e (Based on result of Hyydrate Inhib bitor Study) Nitrogen Pacckage (for purging) Nitrogen Pacckages (for blanketing of o all chemiical injection n tanks) 18 80 gallon Potable Water Interm mediate Bulk containe er (for flushing of Pig P La aunchers/R Receivers)
Subsea Pipelines P
6.3.1 1
Well Fluid F Pipelines Well fluid pipelines are provided d in table be elow. Table-1: Well W Fluid Pipe elines
From
To
Pipeline Nominal Diam meter (Inch)
Appro oximate length h (KM)
Piipeline
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6.3.2
WHT-3
WHT-2
12
4.7
WHT-4
WHT-5
18
4.8
WHT-5
NSMFT
18
6.1
WHT-6
NSMFT
10
5.2
WHT-7
NSMFT
10
4.9
WHT-8
WHT-9
14
4.2
WHT-9
NSMFT
14
5.6
Gas Lift Pipelines Lift gas pipelines are provided in table below. Table-2: Gas Lift Pipelines
6.3.3
From
To
Pipeline Nominal Diameter (Inch)
Approximate Pipeline length (KM)
NSMFT
WHT-2
6
3.8
WHT-2
WHT-3
6
4.7
NSMFT
WHT-5
6
6.1
WHT-5
WHT-4
6
4.8
NSMFT
WHT-6
6
5.2
NSMFT
WHT-9
6
5.6
WHT-9
WHT-8
6
4.2
Water Injection Pipelines Water injection pipelines are provided in table below. Table-3: Water Injection Pipelines
From
To
Pipeline Nominal Diameter (Inch)
Approximate Pipeline length (KM)
WHT-2
WHT-3
6
4.7
NSMFT
WHT-5
10
6.1
WHT-5
WHT-4
6
4.8
NSMFT
WHT-6
6
5.2
NSMFT
WHT-7
6
4.9
NSMFT
WHT-9
8
5.6
WHT-9
WHT-8
6
4.2
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6.3.4
Main Oil Line (MOL) Table-4: Ma ain Oil Line (M MOL)
6.3.5
From m
To
Pipe eline No ominal Diam meter (Inch)
Approximate len ngth (KM)
NSM MFT
DAS d Island
16
70.3
Pipeline
Export Gas G Pipeline (EGL) Table-5: Ex xport gas pip peline (EGL)
7.0
From m
To
Pipelin ne Nominal Diametter (Inch)
Approxima ate Pipeline len ngth (KM)
MFT
IGD D-HAP
10
31.7
GENERA AL SAFET TY REQUIR REMENT This section provides broad outtlines of varrious HSE and a loss pre evention me easures to be b ed in the EPC Phase to ensure HSE H integriity of the fa acilities. It iss to be note ed considere that the WHTs W shall be designe ed for norma ally unmann ned operatio on.
7.1
Inherent Safety e to manage hazards by the app plication of inherent HS SE principles Efforts will be made an control and mitigatio on methodss. rather tha The desig gn will incorporate safe ety principle e to reduce e occurrence e of potentiial hazardous incidents and recovvery measu ures to mitiigate the consequenc c ces should a hazardous event occcur.
7.2
Formal Safety S Stud dies & Desiign Review ws As per COMPANY C standard philosophy p a number of o safety & loss preve ention studies including HSE review ws will be conducted c a the EPC Stage of the Project. These at T studies nded to identify, evalu uate and asssess the hazards h an nd demonsttrate that th he are inten residual risks r from th he project are a “As Low As Reason nably Practicable (ALA ARP)”. The follow wing HSE reviews and d studies shall be carrie ed out eithe er by the EP PC Contracttor or through a specialiist 3rd party HSE Consultant: • Sa afety Studie es Methodo ology Reporrt • HA AZID/ENVID/OHRA Te erms of Refference • HA AZID/ENVID/OHRA Workshop W • AP PI 14J checck list Study (HAZ • Hazard and Operability O ZOP) • SIL (Safety in ntegrity leve el) Review • F & G SIL Re eview • Ve ent Radiatio on and Disp persion stud dy • Noise Study • Accoustic Indu uced Vibration Study • Quantitative Risk Assessment (QRA A) • Fiire Risk Ana alysis • Riser Risk Asssessment • Prrogressive Collapse C An nalysis Stud dy • Sm moke & Gas Ingress Analysis A
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• • • • • • • • • • • •
Fiire & Gas Mapping M and d Performan nce Target Study CFD Explosio on Study HSECES and d Performan nce Standa ards Dropped Object Study and a Pipeline e Protection n Study Esscape Evaccuation Res scue Analyssis (EERA) Em mergency System S Survvivability An nalysis (ESS SA) AL LARP Studyy 3D D Model Re eview Health Safetyy Environment Impact Assessmen nt (HSEIA)[1] Prroject Healtth-Safety-En nvironmental Review (PHSER)[1] ( Em mergency Response R Plan P H2S area classsification
Note [1]: BY COMPAN NY.
ecommenda ations of the e studies mentioned m a above will be b utilised for f The findings and re ng the HSE E requireme ents and specification ns for the facilities f to be designe ed developin under the e project, ass seen apprropriate. Practicab ble design related r risk reduction measures will w be implemented. Measures for f hazard ellimination shall take priority over hazard h redu uction meas sures. Timing off these revie ews and studies is cru ucial to ensu ure that HS SE issues are addresse ed in a time ely productiive mannerr, to avoid unplanned corrective actions that may havve negative impacts on project sch hedule and budget. 7.3
Safety Engineerin E ng Deliverrables In addition to the formal safety studies s & de esign review ws, the follo owing safetyy engineerin ng deliverables related to safety wiill be prepared in EPC phase: • • • • • • • • • • • • • •
7.4
Prroject HSE Plan HSE philosop phy Fiire Protectio on philosophy Esscape, Evacuation & Rescue R Ana alysis Hazardous Area A Classiffication Sch hedule F & G Placem ment Design n Basis Fiire & Gas Detector D Layyouts Fiire & Gas Cause C & Effe ects Charts Fiire Fighting & Safety Equipment Layouts L Fiirewater De emand Calculations Fiirewater sysstem P&ID’ss Te echnical sp pecifications s and datassheets for Fire F Fightin ng, Life Savving & Safe ety Eq quipment’s.. Sp pecifications for Safetyy Signs SH HEAMS (Sa afety & Env vironmental Action Mon nitoring System ) Regisster
SHEAMS S Register The main n HSE actio ons manag gement/tracking tool to o be used within w the project p is th he Safety, Health H & En nvironmenta al Action Monitoring M System S (SH HEAMS) Re egister, which identifies all HSE acctions raised d during the e course off the Projecct. The same will also be b f closeoutt status of th he identified d HSE Actio ons. FEED SHEAMS S re egister will be b referred for
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updated to incorporate findings/recommendations.
the
EPC
phase
HSE
studies/workshops
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 equipment’s 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.
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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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11.0
HAZARD DOUS ARE EA CLASS SIFICATIO ON The prima ary purpose e of the haz zardous area classification is to prrovide ignitio on control. It also de efines the hazardous areas acco ording to th he probabillity of occu urrence of an a explosive e gas/air mixxture in order to: • Pe erform the correct sele ection of insstruments and a equipm ment to be used u in these arreas. • En nsure that sources s of ignition are separated from f source es of flammable gas. Hazardou us area classsification shall s be performed in accordance e with IP 15 5, 3rd editio on and ADM MA GDL-017 7. The prote ection rating g applicable e to electrica al equipment shall be as per this standard and d zones spe ecified. he course of o hazardous area classsification and a design particular attention a shall During th be given to the locattion of samp ple points, vent v etc., ass applicable e. ed to minim mize areas classified as a Zone 0 and Zone 1. Process facility will be designe o release giving g rise to a Zone 1 area shall be confined d to essenttial Continuous grades of y. vents only Following g areas will be design ned to classsify as non--hazardous s (unclassified) either by location or o by protecction. • Em mbarkation area/Assem mbly area fo or evacuatio on • Control room ms and electtrical roomss.
11.1 Equipme ent Selectio on Electrically operated d devices shall be suittable for the classified d area in which they are a installed. However, in shall be at least suitab i principle,, all outdoorr electrical equipment e ble for Zone 2, Gas Grroup IIB an nd temperature class T3 as miniimum, exce ept in batte ery enclosure es where th hey shall be e certified for f installattion in Zone e 2, Gas Group G IIC an nd temperature class T6. T It shall also a complyy with the re equirementss of the rele evant parts of the latestt IEC 60079 9 and ATEX X directives. All outdoo or items succh as ESD, Field Instru uments, F& &G detectors s, navigation aids, wavveoff lights etc. shall be b suitable for zone-1, Gas Grou up-IIB & tem mperature class c T6 as sa minimum irrespective of the are ea classifica ation. For indoo or areas insside switchgear/LER building, b safe area (ind dustrial type e) equipme ent will be se elected as th he building will be presssurised. All Electrical equipment e inside batte ery room sha all be suitab ble for Zone e-1, Gas gro oup IIC hazardous area a. Tempera ature class T6 T shall be considered d for light fiixtures, swiitches, sockets, JBs in the batte ery room an nd battery ro oom Exhausst fans. All batterry backed up emergenc cy lighting ffixtures sha all be suitab ble for Zone e-1 hazardous area irresspective of indoor/outd i oor location n. equipment installed in the haza Surface temperature e of the mechanical m ardous areas should no ot exceed 200°C 2 and will w be manu ufactured to o ensure tha at rotating parts p are no onsparking and adequa ately protec cted againstt the genera ation of a sttatic charge e. 11.2
S Ignition Sources The posssible risk of ignition/fire es occurring g can be gre eatly reduce ed by adhe erence to sa afe working proceduress. Accordin ngly, contro ol of ignitio on sources s will be introduced in accordan nce with Saffety Regulation during any maintenance/SIMO OPS activities.
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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 WHT’s 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.
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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 WHT’s 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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• •
Where W apprropriate inittiate autom matic shutd down, isola ation of the concerne ed eq quipment/syystem. F&G G should be hardwired and confirm med signal would w be se ent to o the ESD as applicable e. Wherever W n needed, acctivate fire protection n measure es to mitigate haza ard co onsequence es.
The Fire and Gas syystem will co onsist of thrree subsysttems: Detection n: Differentt types of sensors s will be used to o initiate ala arm and co ontrol action ns. Flammab ble, toxic & fire f detecto ors will be positioned th hroughout th he facility. Manual M alarrm call pointss will supple ement automatic detecctors. Shutdow wn Action: The F&G system s will continuoussly examine e inputs from m all senso ors and deterrmine required shutdow wn action. Active Protection: Fire extinguishing sysstems will be b operated d either automatically on o receipt off signals or manually. Further details d of Firre and Gass Detection System shall be referred in the Project P F&G Placemen nt Design Basis B (AD219-705-S-DB BD-07008)..
15.0
EMERGE ENCY POW WER Emergency power shall s be cap pable of sim multaneouslyy supplying g power, witthin the thre ee below spe ecified time es: ¾ Fo or a period of 96 hourss to Navigattional Aids ¾ Fo or a period of 4 hrs. to:: • Sw witchgear control c powe er on WHT ¾ • • • • • •
Fo or a period of 90 minuttes to: Fiire & Gas System S Prrocess conttrol systemss and emerg gency shutd down system Te elecommun nication Sys stem Critical HVAC C system Wave-off W Lights EC CMS
Emerrgency lightiing to the fo ollowing spa aces: • Alll escape ro outes • Muster M areass • Alll storage po ositions for firemen’s o outfits • Alll stations and rooms where w fire fig ghting equip pment are to t be installe ed • Alll communiccation and emergency e equipment spaces • Em mergency liighting fixtu ure with selffcontained battery b shall have 90min autonomy. 15.1 Fire Prottection Sys stem Fire prote ection syste ems shall be b provided d to limit (or prevent) fire f escalattions to avo oid risk and minimise m the damage. WHTs thatt are norma ally unmanned are provvided with dry d deluge sp pray system m in order to o protect the e equipmen nt’s during SIMOPS S
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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 WHT’s 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 subbranches to spray the firewater on the protected equipment’s. 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 WHT’s 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 equipment’s shall be marked in the FF, LS & Safety equipment’s 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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fire, miniimize sprea ad of fire to adjacen nt areas and a limit th he damage e caused by hydrocarb bon fires. Passive fire protecttion shall be b conside er (for riserrs & riser ESD valve e, Primary & e members, Building wa all, any other vulnerab ble HSE crittical elemen nts secondarry Structure etc.) base ed on the fire risk Asssessment an nd Progressive Collap pse Analysiss study. Bla ast protection n measure shall s be con nsidered ba ased on the CFD explo osion study. The meth hod of passive fire prrotection to be used shall s be ev valuated considering th he following:: • • • •
Pe erformance e under jet fiire & pool fire and posssible explossive loads. Corrosion un nder the protection systtem Acccess for in nspection an nd maintena ance to the protected equipment e Operability off the protec cted system
The requirement of Passive Firre Protectio on shall be identified i an nd provided d based upo on endation of FRA study (Refer Docc. No AD219 9-705-S-RP PT-07017) and a based on o recomme FEED FR RA Report, fire f proofing g shall be provided p in the t WHT LE ER /Switch gear buildin ng and critical ESD valvves. The PFP should be unaffected by typical environment e tal condition ns including g temperatu ure s, humidity, salt, moistu ure, etc. and d shall be durable. d variations
16.0
ESCAPE E, EVACUA ATION & RESCUE R The safetty goals of the t escape,, evacuation n and rescu ue provisions are: • •
To o provide ad dequate pro otection to all a the perso onnel engag ged in operrations To o ensure sa afety of perrsonnel in an a emergen ncy/acciden nt scenario such as firre, to oxic gas rele ease, falling g into the se ea etc.
In order to t meet the safety goals suitable e escape, eva acuation an nd rescue provision p shall be made in the desig gn. The EER R strategy will w be develo oped consid dering norm mally unman nned WHTss and shall be b in accordance with BP B GN 44-100. The EE ER Strategyy shall addre ess the likely methods of ning and a assess the equipmentt provision accordingly, platform operation and mann s req quirements. making due recognittion of the statutory n the numbe er of occupa ancy, the esscape & evvacuation facilities shall be prepare ed Based on by the specialist con nsultant. 16.1 Escape At least tw wo primary escape rou utes from each deck shall be provvided. All Decks D shall be b connecte ed by two se eparate sta airways on opposite o sid des - from Helideck to o Boat fend der level, Pip ping & equip pment’s shall be arran nged in suc ch a way th hat in any case c it shou uld not obstru uct the esca ape routes. The primary escape e routes sha all be minim mum 1.2 m wide and secondary s escape rou ute width is 1.0 meter with w head clearance of o 2.2 m and clear off equipmen nt, pipe worrk, structurall items, insttrument cab ble tray, and d stands. The T width off the door should s not be b restricted d by the doo orways whe ere escape from other areas to esscape route es is require ed. Other req quirements to be consid dered for esscape route es are:
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•
Esscape route es will be clearly marke ed having non-slip n surf rface and with w no access ha atches locatted on esca ape routes path. p • Esscape route es shall nott be obstruccted in any way. No siingle accide ent should be b ca apable of blocking both h alternate routes. r • Within W buildin ng dead leg g shall not be b greater th han 3m and d for other liimited access arreas, dead leg l shall no ot be greater than 5m. • Hinged emerrgency doorrs shall ope en in the dire ection of sa afety (escap pe). The wid dth e restricted unduly by the t presencce of doorw ways includin ng off a route should not be th he fire doorss. • Esscape route es and stairw ways should allow the transit of sttretcher. • Esscape route es will take shortest rou ute to muste er points. • Ass far as po ossible, esc cape routess shall not direct esca aping perso onnel throug gh ha azardous arrea of highe er level than n one from where w they start. • Att valve loccations or other place es where regular acccess may be require ed, pe ermanent escape e / access ladders shall be installed. Heat H shield at stair case sh hall be provvided. EERA stu udy will be performed by HSE consultant c to o verify the e EER provvisions durin ng detail eng gineering. 16.2
Evacuattion The prim mary means of evacua ation from the Wellhea ad Towers will be thro ough life ra aft. Presentlyy two numb bers of thro ow away typ pe life rafts s considerin ng 2x100% capacity are a provided on sump tank t deck of o each WH HT’s. Life ra aft shall be e provided w with SART & EPIRB. Location L and d type of life e raft shall b be finalized through EE ERA study. In case where w prima ary evacuattion is not accessible a in emergen ncy or beca ause of roug gh sea cond dition, the secondary s m mean of evacuation sh hall be at th he boat lan nding area by field marine vessel o or nearby bo oat. Helicopte er is also co onsidered an a alternativve means of o evacuatio on based on o emergency scenario, availabilityy & weather conditions.. MEDEVAC C will be thrrough helico opter. In additio on to above,, lifebuoys, life jackets & BA sets shall be strrategically lo ocated on th he platform for man ovver board situations. A All lifesaving g & rescue equipmentt’s shall be in compliance with ADM MA, BP and d SOLAS re equirementss. Approved d inflatable Life jackets s equivalentt to 150% off POB shalll also be pro ovided on th he tower.
16.3 Tempora ary Refuge In view of o normally unmanned nature of operation, no tempora ary refuge on o the WHT Ts in the desig shall be considered c gn. Howeve er Muster Po oint shall be e considere ed at strateg gic location. 16.4 Muster Point P Muster area a is a designated d area wh here perso onnel can safely asssemble (0.7 75 m2/person) to assesss hazard, take roll ca all, and prepare to eva acuate a fa acility. Mustter area for each e WHT’ss are provid ded on the sump tank deck. Eme ergency com mmunications
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(VOIP Ph hones) & lifesaving equipment’s e (stretchers s, lifejacketts, BA setss etc) will be b available in muster areas. a Mustter areas sh hould also have adequ uate and re eliable lightin ng and emerrgency lightting for 90 minutes. m During the maintena ance or in th he presence e of a drilling rig, the maintenance m e barge or th he rig will be e the musterr point for th he persons on board. 16.5 Safety Siign The provision of safe ety signs is an important feature of o personnel safety. Safety sig gns shall be e provided throughout t t platform the m, to indicatte the escap pe routes an nd the location of muste er area, varrious fire fig ghting and lifesaving l e equipment’s , provided on o the platfo orm. The signs shall be self- lum minous. Type, number and locattion of safe ety signs, to be provided d, shall align n with COM MPANY’s pra actice on similar type of o facilities. 16.6 Emergen ncy Respon nse Emergency Response Plans sh hall be reviewed (on-ssite and off--site) in rela ation to Majjor Accident Hazards orr based on credible c em mergency sccenarios. ERP prep pared for th he field will be reviewe ed with respect to the new project facilities to integrate with the ovverall facility y ERP.
17.0
PERSON NNEL PRO OTECTION N & LIFE SAVING S EQ QUIPMENTS The objecctive of PPE is to provvide adequate protectiion on an in ndividual ba asis to all th he personne el engaged in i operation n & visitors. Due to presence p off H2S on th he platform,, existing ADMA A proce edures for H2S shall be b adhered to t by the vissiting perso onnel. A minimu um of sets (150% ( of POB) P of 45 minutes bre eathing air supply capacity shall be b stored on n each welllhead towe er. 15 minu utes Breath hing Air Esc cape sets sshall also be b provided in WHTs. Portable Other O equip pment’s suc ch as firem man equipm ment cabine et, helicopter crash equ uipment, win ndsock, ele ectrical safety kit etc. shall also be e provided on o each WH HT’s. Lifesaving g equipmen nts such as SCBA (60 minutes), Life L jackets, Life Buoys, Descent Kit, K Emergency Eye wassh and safe ety shower, First Aid Kit, Knotted rope, r Stretcchers etc., will w be provid ded at strate egic locatio ons on each h WHT’s. Further F deta ails of these e equipment’s are provid ded in FF, LS L & Safetyy equipmentt’s layout & Project EER Philosophy. The quan ntities of life esaving & re escue equip pment shall be assesse ed & confirm med in EER RA study. Insulation n or other means m of personnel p p protection shall be insttalled only in accessib ble areas where the ope erating temp perature of piping or eq quipment su urfaces will exceed 65°°C and will present p a sa afety hazard d because of location. Insulation shall be pro ovided as per p the requirements of COMPANY Y specification SP-102 28. Hazard signs shall be displaye ed in approp priate locatio ons to warn n personnel of hot surfa ace. Safety an nd survival equipmentt will comp ply with the e relevant COMPANY C standards & Internatio onal Conven ntion for the e Safety of L Life at Sea (SOLAS) 19 974.
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17.1
Machine Safeguard ding o be suitablyy guarded to o protect pe ersonnel fro om Exposed moving parrts of machinery are to uards and safety s device es provided d shall be maintained m a kept in position and p while injury. Gu the mach hinery is run nning.
18.0
SAFETY Y PHILOSO OPHY OF CONSTRU C UCTION/SIMOPS Requirem ment of und dertaking concurrent c or simultan neous activ vities (SIMO OPS) will be b considere ed in the de esign and im mplemented d to incorporrate adequa ate safety measures. m Constrain ns if any in n terms of deployment d t of marine e spread, equipment e load out, an nd installatio on shall be identified. The T jackets shall be de esigned to resist r boat impact i forces associate ed with the a anticipated marine sup pport operattions. Constructtion risk asssessment including SIMOPS shall s be pe erformed to o identify key issues an nd implemen nt appropria ate control measures. m This will cover all phases off the consttruction, co ommencing with mob bilization, site preparatio on, constru uction, pre-ccommission ning & commissioning activities and a handovver to the CO OMPANY.
19.0
INTEGRITY ASSURANCE As part of o this proje ect, integrityy assurance e requireme ents are to be implem mented in lin ne with ADN NOC CoP V6-01, which definess a processs to assurre integrity of HSECE ES throughou ut asset life ecycle. HSE ECES & the eir Performa ance Stand dards (HSECES-PS) are a the found dation of anyy Integrity Assurance A S Scheme Health Safety S Environment Critical C Equ uipment an nd System (HSECES S) are those Equipmen nt’s and Syystems who ose failure ccould cause or contrib bute to an accident with severe orr catastroph hic consequ uences or whose w purpose it is to prevent / limit the effe ect of such an accident. The proced dure of iden ntification off HSECES is as followss: • • • •
Hazard Identtification thrrough HAZID/ENVID/O OHRA Workshop Develop Hazzard & Effecct Register to t Identify MAH M Develop Bow w-Tie Diagra am for each h MAH Alll major Thrreat Barrierss and Mitiga ation Measu ures of Bow w-Tie Diagra am forms List off HSECES
HSECES S performan nce standarrd develope ed during FE EED shall be b updated and shall be b reviewed by the com mpany appo ointed HSE EIA consulta ant and IVB B. Any com mments raise ed by them shall s be inco orporated. Following g approval of perform mance stand dards, IVB shall deve elop written n scheme of examinattion for the identified HSECES. H I IVB shall also a verify & submit th he verificatio on report of the integrityy of HSECE ES.
20.0
ENVIRONMENTAL L MANAGEMENT SY YSTEM The design of the facilities f wiill seek to implement the policy of “No Da amage to th he Environm ment” and ensure that all envvironmental risks havve been id dentified an nd addresse ed, and apprropriate me easures take en.
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Design shall s recogn nize ADMA A-OPCO co ommitment to zero em mission, conservation of energy, managing m w wastes and controlling pollution th hrough appllication of best b availab ble technolog gy. HSEIA sttudy shall be b performe ed complyin ng with ADNOC Code es of Practicce, to assess the poten ntial environ nmental impact assocciated with installation of WHTs and a laying of pipeline. Pipeline shall follow th he route where feasible e to minimiz ze disturban nce to marin ne life and habitats. The main n source of Environmen ntal Pollutio on from WHTs and pipe elines are; • • • 20.1
Emissio ons of gase eous polluta ants to the e atmosphe ere/ Evolved d gases fro om vent lines. ons of liquid d pollutants to the sea. Emissio Oil spill
ges to Marine Discharg During no ormal opera ations, no major m hazarrdous liquid d discharges from the new facilities are expeccted exceptt from wate er injection system s occ casionally. All A equipme ent and pipin ng of WHTss shall be provided p with closed/o open drain provision to drain liqu uid whenevver required. The colleccted liquid will w either be b pumped back to th he productio on header or transferre ed to service e boat vesssel using po ortable pump p. During drrilling/work--over opera ation and pre-commisssioning of the t piping a and system ms, small qua antities of water w will be required to o be dispose ed off. Generallyy, clean, filtered and chemically treated se eawater sho ould be ussed for hyd dro testing. The T disposa al of the hydro test water w shall comply witth UAE reg gulations an nd The dispos ADNOC Guidelines. G sal of mud and other waste w gene erated durin ng drilling an nd work-over operationss will be to the tank on n the rig use ed for these e operations to minimiz ze the disturrbance to th he marine environmentt. However,, there cou uld be acciidental spillage from pipeline ru upture/failure e. Accidenttal spillage will w be restrricted throug gh closure of shut dow wn valve in respective e pipeline an nd by implem mentation of oil spill res sponse plan n.
20.2 Discharg ges to Atmo osphere During no ormal operrations, no major disccharges to atmosphere e from the facilities are a expected except from m fugitive emission. During maintenance m e/emergencyy, vent disccharge to attmosphere will be provvided throug gh a vent line discharge ed at safe lo ocation. Wh hen rig is co onnected to WHT, the WHT W vent will w be routed d through th he rig vent system. s Occasion nal gas em missions arre likely fro om drain sump s tank,, instrumen nt vents an nd sampling points during periodic maintenance and pigg ging operatiions. Vent disp persion & radiation r sttudy shall b be carried out for the cold vent & accidental ignition scenario. H2S concentra ation at varrious locatio ons shall be e reviewed tto ensure th hat its concentration is within w the pe ermissible le evel.
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21.0
OCCUPA ATIONAL HEALTH PHILOSOP P PHY Since the e WHTs are e being a no ormally unm manned, no major occu upational he ealth threat is conceived d during op peration sta age of the project. Ho owever, the constructio on phase will w pose an occupation nal health threat t to co onstruction workers. The T Constru uction Safe ety Philosoph hy/Plan to be b develope ed & shall address a the e Occupational Health aspects. Th his will coverr all phasess of the pro oject i.e. construction, commencin ng with mob bilization, site preparatio on, pre-com mmissioning g, commisssioning & start-up activities to ha andover. Th his shall disccuss the medical m facilities, medical emerge ency procedures and occupation nal health an nd hygiene related r requ uirements. Work sha all comply generally with w ADMA A-OPCO Sa afety Regulation. An Occupation nal Health (O OH) manage ement proce ess aiming to ensure that t all foresseeable OH H hazards are a recognize ed, assesse ed and controlled will be set up. All personnel (consttruction, operation and d maintenan nce) engag ged in offsh hore work will w be trained d in use of PPE’s, P Sea Survival an nd H2S expo osure.
21.1
Noise ontrol is inte ended to prevent p perssonnel bein ng subject to excessivve noise an nd Noise co vibration that may afffect their he ealth and ability to perfform their duties in a sa afe mannerr. A Noise Study S will be e performed d by a speccialist HSE consultant. c The follow wing maxim mum noise level limitss reflect the e requireme ents for conservation of hearing, noise n levelss required fo or adequate e task perfo ormance and d for person nnel comforrt: • • •
The absolute allowable noise level in any a situatio on is 115 dB ("Peakk", g Level). This T level shall s never exceed evven for sho ort Emergencyy or Ceiling durations. ontrol roomss and office es shall havve target levvels of 50 dBA, and shall Noise in co not exceed 60 dBA. ervice space es shall not exceed 65 dBA. Noise in se During norm mal operatio ons, the ma aximum noisse level at process p are ea is 85 dBA A
Project Environment E tal Protectio on Philosop phy shall be followed for the app plicable noise criteria & control requirements.
22.0
HYDROG GEN SULP PHIDE H2S preccautions in n accordance with ADNOC CO OPV4-10/11 shall be in place. In particularr, portable H2S detecto ors shall be available and an adequate numbe er of BA sets, SCBA etcc. are provid ded on the facilities. f
23.0
CHEMIC CAL EXPOSURE Suitable precaution p shall be in place and PPE P provided for hand dling and prrotection fro om accidenta al exposure to chemica als used. MSDS M of the e chemicalss used will be b referred to decide the necessarry protection n.
24.0
COMMUNICATION N & NAVIG GATION SY YSTEM WHT’s will w be provided with VOIP V phone es as a parrt of communication system. s Oth her mean of communiccation (e.g. VHF comm munication for rescue e & recovery, helicoptter communications & hand held radios for operating personnel)) will be brrought to th he
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HSE PHILOSOPHY
ADMA‐OPCO Document No. : AD219‐705‐S‐PHY 07001
Rev.
NPCC Document No.
0
: 3291‐U‐RP‐001
WHT’s when visiting these platforms. Further details can be Telecommunication System Design Basis (Doc No. AD219-705-G-05051)
referred
in
Navigational aids (including foghorn) for offshore installations shall be provided on each WHT’s in accordance with the IALA, SOLAS requirements and local coastal protection acts. Wave off lights shall be provided on WHTs on helideck and boat landing area to warn approaching helicopter or boats in case of a fire or a gas release on the tower. These wave-off lights shall be designed as per CAP-437 requirements.
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