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KUWAIT OIL COMPANY (K,S.C.}

STAN DARDS

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KOC STANDARD
FOR

PRESSURE RELIEF DEVICES:
DESIGN AND MATERIALS

Eloc. No. Koc-MP-tz7 PART I

STANDARDS TEAM

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KOCSTANDARD
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PRESSURE RELIEF DEVIGES:
DESIGNAND MATERIALS
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ISSUING AUTHORITY:

STANDARDS TCIM

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Task Force

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KOC-!iJIP-027 PART

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TAFLE OF CONTENTS

Paqe No.
FOREWORD

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1.0

SCOPE

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2.0

APPLICATION

6

3.0

TERMINOLCIGY

7
7
12

4.0

3.1
3.2

lfefinitions
Abbreviations

REFERENCE STANDARDS, CODES AND SPECIFICATTONS

4.1
4.2
4.3
4.4

Conflicts
List of Standards and Codes
Project Specifications
Order of Precedence

12
14

14

CONDIT¡ONS

5.0

ENVIRONMENTAL

6.0

HEALTH, SAFETY AND

7.0

PRD: FIJNCTIONS AND TYPES oF PRËSSURE REL¡EF

8.0

PRD: DESIGN BASIS AND TECHNICAL REQUIREMENTS
8.1 Spring-Loaded Pressure Relief Valve: Requirements

8,2
8.3
8.4
8.5
8.6

12
12

14

ENVIRONMENT

15

DEVICES l6

Rupture Disk: Requirements
PRV: Griteria and Basis of Selection
PRD: PW for Atmospheric and Low pressure Storage Tanks
PRD: Thermal Relief Valves
lsolation Block Valves and Car-Seals: Requirements

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l6
19
20
21

22
23

9.0

PRD: MATERIAL REQUIREMENTS

24

10.0

GUARANTEE & WARRANTY

25
25
25

1f.0

10.1
10.2

Guarantee
Warranty

INSPECTION AND TESTING

11.1
11.2

General
Material Inspection and Certification
Shop lnspection

1't.3
11.4 tluality Plan
ll.5 AcceptabilityCriteria

25
25

25
26

26
27

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KOC-MP.1 '14.2 FIGURE-1: THE PRESSURE-LEVEL RELATIONSHIP FoR PRV FIGURE'2: THE PRESSURE-LEVEL RELATIONSHIP FoR RUPTURE-DISK ACKNOWLEDGEMENT 29 30 3l 32 33 34 ú .0 QUALITY ASSURANCE 27 13.0 APPENDICES 29-33 AFPF!y_plx-1 DATA SHEET: SPRING LOADED PRESSURE RELIEF VALVE ÐATA sHEET: PILOT-OPERATEÞ PRESSURE RELIEF VALVE DATA SHEET: RUPTURE DISK DEVICE APPENDIX.DOO.0 PACKING.2 General Ðeliverables 15. !{O. MARKING AND DOCUMENTATION 27 14.0 SPARE PARTS & MAINTENANGE DATA 28 f 6.0 DOCUMENTATION 28 28 28 14.{}27 PART I Page 4 of 35 REì/¡ {: 12.

Safety and Environment Managernent System (HSEMS) and the HSE Policy. manufacture. field installation. Tech. Raj Maharaj Mr. requirements of Pressure Relief Devices so as to minimize the need for technical clarifications and disputes. in consultation with the Standards Technical Committee (STC) for use and application throughout the corporate engineering and operationaf functions of Kuwait OilCompany. efficiency and performance. Feedback. operation. and should be directed to: The Team Leader Standards (Chairman.DOC. Svcs. Nawaf Al-Shehab Mr.22241 Ex 23437 r+ tt* . O. Health. KOC P. as well as cost effecti'¡e a pproach. and materials of Pressure Relief Devices to be installed on pressure vessels. and pipelines/piping throughout KOC facilities and installations. Tech. (SK) Opns. ilO. personnel and environment as established by KOC Fire and Safety Regulation. State of Kuwait Task Fo Resoonsible for This Standard The Standards Technical Committee (STC) has entrusted the preparation of this Standard to the Task Force No. (NK) Opns. f FOREWORD This document "KOC Standard for Pressure Relief Devices: Design and Maierials" (KOC-MP-027 PART 1) is intended to provide the basic guidelines and minimum technical requirements for design. derived from the applicatìon of this Standard at any stage of design. Mirza Mohsin Mr.027 PART I Page õ of 35 REV. Tech. purchase. Box 9758. Standards Technical Committee) lndustrial Services Group. This Standard has been approved by the Standards ïeam. atmospheric and low pressure storage tanks. comments or suggestions. Mohammed Al-Ajmi Standards Team Major Projects Team Design Team Opns. Yousef M. Svcs. KOC-MP. pressure equipments. Zaman Mr. and maintenance are encouraged. reliability. and material selection of Pressure Relief Devìces that have applicability ìn KOC installations and facilities with a view to achieve quality. (WK) TF Leader & Author Member Member Member Member Ex: 61371 Ex: 66975 M Ëx: 20336 Ex:61815 Ex'. pressurized systems. (TF-MP/07) consisting of the following: Mr. This Standard sets out to achieve the following objectives: > To specify the minimum technical requirements for design. Adnan Bohammed Mr. material selection. Ahmad¡ 61008. Svcs.

2. 2. pressure equiprnent.4 kPa (15 psig). pressure equipments. pressure equipments. 2.2 Any project specÍfic requirement shall be further elaborated and described in detail in KOC Data Sheet (Appendix-1) and/or Purchase Document.1 APPLTCAIION The Pressure Relief Devices (Pressure Relief Valve. and piping from structural damage or mechanical failure rvhen such items are exposed to extremely high temperatures such as during a fire. 2. pressurized systems. KOC-MP-O?T PART 1.6 This Standard does not cover the U-type blow out wet [egs. and pipelines I plant piping with stranded liquids. the surface-safetyvalve.0 Í Page 6 of 3$ REV. NO.3 The Pressure Relief Devices (Thermal Relief Valve) covered in this Standard are intended for relief of the stranded liquids due to thermal expansion in the tightly closed pipelines and plant piping. <r ri' n" Õ g- (/* .DOC. 2. 1. in KOC onshore facilities and installations.4 The PRD covered in this Standard are intended to protect unfired pressure vessels. size roads.? The Pressure Relief Devices (Pressure Vacuum Valve) covered in thís Standard are intended for atmospheric and low pressure storage tanks designed to operate from vacuum through 103. and Rupture disk) covered in this Standard are intended for unfired pressure vessels (except steam boilers).4 kPa (15 psig) or greater.0 2.5 The PRD covered in this Standard are not intended to protect pressure vessels. atmospheric and low pressure storage tanks. pressure systems. 2.8 The PRD covered in this Standard are not intended for use on pressure vessels that are used for transportation of liquid hydrocarbon in bulk on the To in. and atmospheric and low pressure storage tanks. and pressure systems whose operating pressure is 103.1 This standard specifÍes the minimum technical requirements for Design and Materials of "Pressure Relief Devices" intended to be installed on pressure vessels. 2.7 This Standard does not cover thermal relief valve of less lhan 2. the subsurface-safety-valve and the pressure relief devices installed on drilling rigs and its associated equipment and vessels etc. 1 scoPE 1. equìpments and pressure systems including atmospheric and low pressure storage tanks against overpressure during normal operating and emergency conditions such as fire contingencies.

nillons f Page 7 of 35: REV. However for additionaldetails refer to APt 520 and API 576: 3. or vice versa.2 Back Pressure This is the pressure due to the combined effect of superimposed and built-up back pressure in the discharge side of the valve. expressed as a percentage of the set pressure.1. expressed as a percentage of that pressure. KOC. HO. after the pressure relief valve has opened.4 Built-up Back Pressure Built-up back pressure is the pressure which develops at the valve outlet as a result of flow through the valve. b) ConstantSuperimposedBackpressure a fixed value (constant) and exists (superimposed) continuously prior to and during opening of the valve.3 Blowdown Blowdown is the difference between set pressure and reseating (closing) pressure of a pressure relief valve. É qC) rl" .0 TERMINOLOGJ 3. The actual back pressure at any specific time depends on conditions in the píping system to which the outlet of the valve ís connected. 3. or in actual pressure units.1.1 Accumulation Accumulation is the pressure increase over the maximum allowable working pressure of the vessel during discharge through the pressure relief valve. 3. or actual pressure units.DOC.1. This type of back pressure remains essentially at c) \/ariable Supqrimposed Backpressure Ihis type of back pressure varies or changes over a range from a minimum to a maximum. 3.1 Def. Superimposed back pressure is the static pressure in the discharge header before the safety relief valve opens.1.MP{2? PART 3. I For the purpose of this Standard the following definitions shall apply.

10 Leak-Test Pressure It is the specified inlet static pressure at which the seat-leak test is performed 3. 3. ñtO.e.1.DOC. rapid reciprocating motion of the movable parts in which the disc does not fully sit on the seat of a valve. 3.12 KOC Controlling Team Any Kr)C Team authorized to initiate a request for procurement of material equipment for KOC. 3. 3.6 Closing Pressure The closing pressure is the point at which the pressure relief valve recloses. When Car-Seal is placed in position and closed. and relieving capacÌty are directly affected by changes in the back pressure.1. 3. rþ .1.7 Cold Differential Test Pressure (CDÏP) Cold differential test pressure is the set pressure at which the valve is adjusted to open on the test stand.8 Conventional Safety Relief Valve A conventional safety relief valve is a direct spring loaded pressure relief valve whose operational characteristics i. feeling or hearing.5 I Page I of 35 REV. opening pressure. This pressure includes the corrections for back pressure and/or temperature and service conditions. 3.1 . as determined by seeing.1.1 . I Car Seal A self-locking seal intended for sealing or locking the isolation block valves installeC with pressure relief valves assembly.1.9 Flutter Flutter is the abnormal. it locks perfectly and securely and can not be opened or removed unless cut with the wire cutter or physically broken intentionally in order to be removed.11 Lift Lift is tre actual travel of the disc away from the closed position when a valve is relìer¡ing. KOC-MP-027 PART 3. or any KOC Team that commands and/or "ndlor manages and/or controls and/or executes a KOC project. closing pressure. This signifies the value of decreasing inlet static pressure at which the valve disc re-establishes contact with the seat or at which lift becomes zero.1.

3.1 . Rupture disk is an example of Non-reclosing device.16 Non-reclosing Pressure Relief Device A pressure relief device. . rl. Overpressure is similar to accumulation when the relieving device is set at the maximum allowable working pressure of the vessel.1 . 3. or hearing' 3. The overpressure is generally expressed as a percentage of set pressure or in pressure units.18 Operating Pressure The ooerating pressure is the gauge pressure to which the vessel or equipnrent is normally subjected during service. 3. KOC{t¡lP{t27 PARÎ 3. 3.1. which remains open after operation and does not reclose itself unless manually reset or replaced.1 . it is the highest pressure at which the pressure relief valve is set to open.DOc.13 I Page I of 35 REV. feeling.1. Consequently. l Manufacturer i Vendor The Manufacturer or Vendor is the original equipment manufacturer or its authorized company responsible to deliver / supply the equipment and on whom tre KOC places the purchase order.15 Maximum Operating Pressure (MOP) The maximum operating pressure is the gauge pressure which is expected or anticipated during the operation of a pressure system or the vessel or equipment.17 Opening Pressure The value of the increasing inlet static pressure at which there is a measurable lift of the disk or at which the discharge of the fluid becomes continuous as determined by seeing. 3.1. for that metal temperature.1. A vessel may not be operated above this pressure at any metal temperature other than that used in its design.14 Maximum Allowable Working Pressure (MAWP) The maximum allowable working pressure is the maximum gauge pressure permissible at the top of a complete vessel in its normal operating position at the designated coincident temperature specified for that pressure. NO.1 9 Overpressure Overpressure is a pressure increase over the set pressure of the pressure relieivalve.

Koc-MP-027 PART'l 3. As the static inlet pressure overcomes the spring force. 3. Relief-valve.he Safety Relief Valve. . A 3.24 Relief t/alve (RV) A relief valve is a spring loaded pressure relief valve actuated by the static pressu-e upstream of the valve and it opens normally in proportion to the pressure increase over the opening pressure.20 Page f0 of 35 REV. The value of the closing pressure is less than that of the set pressure and will be reached after the blowdown phase is completed.1. Rated capacity is generally expres::ed in kilograms per hour (kg/hr) or pounds per hour (lbslhr) for Vapours. Relief valves are normally used for incompressible fluids i. lt then allows the fluid to flow until its upstream pressure falls to the closing pressure. Conventional Safety Relief Valve. and the Rupture Disk etc. t. and Pilot-operated Pressure-relief Valve. lt then closes preventing any further flow.1.1. As such the PRD could be any of the above device intended to protect the pressure vessels. and for liquids ín litres per minute (L/min) or gallons per minute (GPM). used to relieve excess pressure and /or vacuum that has developed in an atmospheric or low pressure storage tank.Ðoc.21 Pressu'e-Relief Device (PRÐ) The Pressure Relief Device comprises of the Pressure Relief Valve.?3 Rated Capacity Rated :apacity is the percentage of rneasured flow at an authorized percent overpressure permitted by the applicable code. the Safety Valve. Balanced Safety ìelief Valve.1. the Relief Valve. spring-loaded valve.1. '¡l rl. For gases it is expressed in normal cubic meters per minute (NCM/rnin) or mtlmin or standard cubic feet per minute (SCFM).e. 3. A pressure-relief valve opens when its upstream pressure reaches the opening pressure. A relief valve begins to open when ihe static inlet pressure reaches set pressure.'e Vacuum Valve (PW) A weight loaded. liquids. the disk begins to lift off the seat. Examples of specific types of pressure-relief valve include Safety Valve.22 Pressu. equ[pment and personnel by automatically opening at predetermined pressures and preventing the destructive consequences due to excess ve pressures. I Pressure-Relief Valve (PRV) pressure relief valve is a pressure-relief device designed to open and relieve excess pressure and to reclose and prevent further flow of fluid after norrnal conditions have been restored. No. allowing flow of the liquid. 3.

Oz? PART 3. When the static inlet pressure reaches the set pressure it will increase the pressure ìn the huddling chamber and overcome the spring force on the disk.DOC. 3 1. ln liquid service. A safety valve is normally intended for compressible fluids such as gas. The relieving pressure is equal to the valve set pressure (or rupture disk burst pressure) plus the overpressure.1.27 Safety Valve (SVJ A safety valve is a spring loaded pressure-relief valve that ìs actuated by the static pressure upstream of the valve and characterized by rapid opening or pop action. I RelievingConditions It indìcates the ìnlet pressure and the temperature of a pressure relief device during ån overpressure condition. 3.MP.1 30 Simmer Simmer is characterized by the audible passage of a gas or vapor across the seating surfaces just prior to "pop". 3. q ü ll_ Þ r- nþ . 3. set pressure is determined by the inlet pressure at which the valve starts to disc'harge.1. KOC. A safety relief valve is an automatic pressure-relieving device which may be used as either a safety or relief valve depending upon application. air or vapor etc.28 Seat Tightness Pressure Seat tightness pressure is the specified inlet static pressure at which a quantitàtrve seat leakage test is performed in accordance with a standard procedure. NO.29 Set Pressure Set pressure is the gauge pressure at the valve inlet.25 I Page 1l of35 REV.1. The difference between this "start to open pressu-re" and the set pressure is simrner. the set pressure is determined by the lnlet pressure at which the valve pops. This will cause the disk to lift and provide full opening at minimal overpressure. ln gas or Vapour service. and is generally expressed as a percentage of set Pressure. 3.26 Safety lelief Valve (SRV) A safety-relief valve is a spring-loaded pressure relief valve that may be used as eìther a safety valve (intended for incompressible fluids) or relief valve (intended for compressible fluids) depending on the application. for which the safety relief valve has been set to open under service conditions.1.

Safety & Environment Management System lnspection and Test Plan Kuwait Oil Company (K. the sukject shall be brought to the attention of KOC Controlling Team for review. q"l * . Rating. and lnstallation of Pressure Relieving Devices in Refineries: Part I .1 National I lnternational Standards API Sto 510 Pressure Vessel lnspection Code-Maintenance lnspection.CODESANDSPECIFICATIONS Conflicts ln the event of a conflict between this Standard and the standards and codes or specifications referenced herein. { Ahbrqviations HSE HSEMS ITP KOC MAWP MOP PIM PRD PRV PW 4. KOC-MP-027 PART .1 Pago 12 of35 Health.2 Lislof Standards and Cgdes The latest edition of the following standards. or purchase or contractual requirements.) Maximum Allowable Working Pressure Maximurn Operating Pressure Pre-l nspection Meeting Pressure Relief Devices Pressure Relief Valve Pressure Vacuum Valve REFERENCE. Selection.|' 3. 4. and resolution or amendment by Standards Team.C. Repair.2 REV.ANDARÐS.ST. and Alteratìon API RP 520 Part I and tl Sizing. fi¡O.DOC. codes and specifications shall apply: 4. consideration.57B Material Verification Program for New and Existing Alloy Pìping Systems rl.S. Safety and Environment Health.Sizing and Selection Part ll. if requìred.2.lnstallation API RP 521 Guide for Pressure-Relieving and Depressurising Systems APt Srd 526 Flanged Steel Pressure Relief Valve API Std 527 Seat Tightness of Pressure Relief Valve API RF 576 lnspection of Pressure Relieving Devices API RF.0 4.

and the Use of Cast lrons .5 Pipe Flanges and Flanged Fittings NPS % Through NPS 24 ASME i331.I Venting Atmospheric and Low-Pressure Storage Tanks ASMË :3ec.219 4. Koc-MP{2r PART t API Stc 2000 Pago f3 of 35 REì/.2 Mechanical Power Transmission Apparatus KOC Standards/RP KOC-G-002 KOC Standard for Hazardous Area Classification KOC-C-007 KOC Standard for Basic Design Data KOC-C.Fundamentals and tsCI 9000 Quality Management Systerns Vocabulary tso 9031 Quality Management Systems .2001 Pressure Relief Devices: Performance Test Codes BS EN ISO 4126 (Part 1-7) BS ISC 6264 Safety Devices for Protection Against Excessive Pressure Hydraulic Fluid Power-Pressure Relief ValvesMounting Surfaces BS PD 5304 Safe Use of Machinery \ . .2.-009 KOC Standard for Spare Parts and Maintenance Data KOC-t-001 KOC Standard for lnstrumentation and Control System Design d .Ðoc. Ho.3 Process Piping ASME Ì]TC 25. Materials for Use in H2S-Containing Environrnents in Oil and Gas Production Part 1: General Principles for Selection of Cracking-Resistant Materials .r Þ d. Vlll Division 1 Boiler and Pressure Vessel Code ASME 816.Part 3: CrackingResistant CRA (Corrosion-Resistant Alloys) and Other Alloys osHA 1910.Part 2: Cracking Resistant Carbon and Low Alloy Steefs.Requirements NACE MR 0175 / ìSO 15156 Part 1-3 Petroleum and Natural Gas lndustries.

the subject shall be brought to the 4. which provides the basrc information requireC for deiign such as the ternperature.1 The supply of equipment. Data Sheets or Purchase Order requirements of specífic project.2 l(uwait Government's Rules and Regulations' KOC Project Data Sheets and drawings.PART I KOC-M)-t27 Part 2 *oc.lanufacturer's / Vendor's standards and specifications ENVIRO NMENTAL CONDITIONS The environmental conditions in Kuwait are severe. Should any conflict exist between the listed dr:cuments.1 Pago 14 of 35 KOC Recommended Practice for Pressure Relief Devices: Sizing. services and documentation shall be in accordernce with the State and local regulations. Twinning. for the titles listed below: Title/Description a) b) General lnstruments Recommended Practice for lnspection and Testing of New Equipment 4. The Fressure Standard shall Re lief Device(s) (including components) covered in this continuous operation in the environmental be conditir:ns specified tL Þ * tu . KOC Purchase order and specifications.4. Refer to'KOC Standard for Basic Design Data" (KOC-G-007).0 5.2 ln case further clarifications are required. wind. environmental. Qualification and Utilization of Third Party 381t02t01 lnspection Services KOC-H$E 4.1 5.1 of this RP.rpply conditions prevailing throughout the Koc facilities. and lnstallation KOC Recommended Practice for Selection. Koc-MP{}z7 REV. materials.2 above.3 attention of KOC Controlling Team in accordance with clause 4. 4.4 Order of Precedence 4. ''his KOC Standard (KOC-MP-027 Paft1)' |. Selection.3 Document KOC Fire and Safety Regulations (Latest) PJqiect Speg!-ficatigns ln additlon to the KOC Standards and Recommended Practices referenced in clause 4.4. No. then the most stringent shall govern. the KOC Controlling Teams shall designate other relevant specificatìons if required. in general the following sequence of precedence shall apply a) b) c) d) e) 5.4. site and utility s.2.

1 All 6. manufacture. manufacture. ând assembly of the equipment covered by this Standard.6. applicable safety requirements of Occupational Safety and Health Administration (OSHA) Standard 1910. I I rl' . assembly or operation and maintenance of all equipments and accessories covered by this Standard.0 HEALTHT SAFETY AND ENVIRONMENT 6.219 and BS PÐ 5304 shall be considered in the design. Safety & Environment Management System (HSEMS)" requirements for the protection of KOC personnel. and the environment during the design.2 The ManufacturerA/endor/Contractor shall comply with "KOC Fire and Safety Regulations" arìd 'KOC Health. adjacent equipment. property.

and API 527.6 The Manufacturer / Ven dor shall also abide by the following additional requirements for PRV.1. rupture disks or a combination of the two devices. KOC. API 520 Part 1.3 The performance testing of the Pressure Relief Valves shall be in accordance with lat=st ASME PTC 25-200'1 Performance Test Codes. based on specific project requìrenents. items such as type. marking.1. API 525. No other type of pressure relief vaive including Pilot-Operated PRV shall be used on any pressure vessel. code symbol stamping. 7. ASME PTC 25-2A01. and other requirements of Pressure Relief Valves shall be strictly in accordance with the applicable rules and requirements of the latest A. in addìtion to the requirements as specified in ASME Sectio n Vlll Div.Oz7 PART Page 16 of 35 REV. 8.2 The design.l- qìtL" t .: . .1 ln all pressurized systems. 8.SME Section Vlll Division 1 and this KOC Standard. NO.5 The sizing of the Pressure Relief Valve shall conform to the procedures and requirements as specified in API 520 Partl 8 1. 8. 8.1 .1. or pressure system. manufacturing.0 PRD: DESIGN BASIS AND TECHNICAL REQUIREMENTS 8. as described below.0 PßP: IUNGTIONS AND WPES OF PRESÇURE F. or pressurized systems shall be Direct Sprìng-Loaded Type.ELIEF DEVICES 7.: * d. pressure setting.Spring-Loaded Pressure Relief Valve (PRV) i) ii) iii) b) c) ConventionalType Bellows Type Balanced Bellows Type (with Auxiliary Balancing Piston) Pilot-Operated Pressure Relief Valve Rupture Disk of PRD refer to Appendix-3 7.4 The Pressure Relief Valve intended for pressure vessels.3 For additional details and characteristics Appendix-4 of KOC-MP-027 Part2.1. a) . . the overpressure relief can be achieved with a variety of mechanisms which include pressure relief valves. f 7... 8. service/process conditions. materials.f DOC.1. accesscries etc in the relevant KOC Data Sheet (Appendix-l). equipments.MP. pressure equipment.2 The types of Pressure Relief Devices (PRD) are described as under.1 The KOC should indicate andior mark as applicable.1 Spri ng -Loaded Pressu re Relief Valve : Req 8. u i and rements certification.

'1. B. provided its requirement is reviewed and approved in writir.17 The manufacturing tolerances of spring loaded PRV with ínlet size 4 inches and below shall be wjthin t'1.9 The flanged-type Pressure Relief Valve shall be in accordance with API 526 B. 8. B.1.1.17mm (1/B in.) 8.) Cutlet flange size 50 mm (2 in.1" . and only for certain select installations. shall 8. However the ManufacturerA/endor shall ensure that the minirnum pressure-temperature ratings of PRV inlet and outlet flanges shall be according to the applicable requirements of KOC Piping Material Classes.) Flanged{ype PRV of size smaller than specified above and without ASMË certification or A$ME code stamp may be allowed if essential.).5. 8.5Bmm (1/16 in.1 1 The minimum slzes of the flanged Pressure Relief Valve shall not be less than as follows: a) b) 8. effective orifice area of PRV shall be determined in with API 520 Part 1.1. and for inlet size over4 inches shall be t 3.1 . No. 8.1 .) Outlet size 20 mm (3/4 ìn.g by KOC.1.1.oCIc. f 8.1 . Koc-MP. 8.18 The pressure vessels and equipments that are to operate completely filled with liquid shall be protected with pressure relief valve designed for liquid service or as required by KOC . and the standard orifice area of the PRV RP accordance the be selected from Table in API 526.).8 The mirimum size of the threaded Pressure Relief Valve shall not be less than as given below: a) b) lnlet size 15 mm (1l2in.027 PART I Page l7 of 35 REV.12 nlet flange size 25mm (1 in.1 .15 The in et and outlet pressure limits of the PRV shall be governed by the pressure-temperature ratings of its inlet and outlet flanges or by the Manuf¿rcturer's design limits whichever is lower.14 The PRV inlet and outlet flanges type and ratings shall comply with the applicable requirements of KOC Piping Material Classes.10 The inlet and outlet flanges facing and dimensions shall be in accordance with ASMË B 16.7 All Pressure Relief Valves (threaded or flanged) shall be starnped with ASME Code "JV'Stamp.1.1 .16 The centre{o-face dimensions of the PRV shall be in accordance with Tables 2 to Table-15 of API 526.13 The minimum required B.

8 kPa (2 psi) for pressures up to and including 483 kPa (70 psí) and 3% for pressures above 483 kPa (70 psi).1.23 The space between a rupture disk device and a pressure relief valve shall be provided with a pressure gage.1.29 For the Pressure-Level Relationship of the Pressure Relief Valve refer to Figure-1 of Appendix-2 of this Standard. the capacity of such a combination shall be establisihed in accordance with ASME Section Vlll Div. or water shall br: the same as that used for determining the set pressure of the valve.21 Ïhe sei pressure tolerances. 1. The valve shall be seated with a seal identifying the Manufacturer.28 For dual service valves.1 .1 . the test medìum such as air. B.1.Doc. 8. plus or minus. a free vent.19 The spring in a pressure relief valve shall not be set for any pressure rnore than 5% above or below that for which the valve is marked. steam.90 of the rated relleving capacity of the valve alone or alternatively. 8.30 The flanged type PRV shall have integralone-piece nozzle 8.1. or water shall be the sarne as the primary relieving medium. air. Koc-MP4. defined for pressure relief valves with set pressure from 103 kPa gauge (15 psig) to 41. it shou:d be specified ìn the KOC Data Sheet (Appendix-1). 8. 8. 8. or an Assembler and a data tag shall be provided on the valve that shall clearly indicate the set pressure capacity and date.26 The maximum acceptable leakage rates through seat of a PRV shall be in accordance with Table-l of API RP 527.1 . 8.27 The test medium for determining the seat tightness i.¡o.e. r. or suitable telltale indicator in such a way that it shail permits detection of disk rupture or the leakage.1.27 PART I Page l8 of 35 REV. his authorized representative.22 The marked capacity of a pressure relief valve when installed with a rupture disk device (rupture disk installed between the inlet of the PRV and the vessel) shall be multiplied by a factor of 0. of pressure relief valves shall not exceed 13.1 .24 The seat tightness of pressure relief valve shall be checked and carried out in accordance with the requirements of API RP 527. steam.1.1. 8. a trycock.1 . l 8.379 kPa gauge (600û psig).1. unless the setting is within the spring design range established by the valve Manufacturer. B. 8.20 The initial adjustment of the pressure relief valve shall be done only by the Manufacturer or his authorized representative.25 ln case KOC requires seat tightness greater than that specified in API RP 527.31 The flanged type PRV with flanges attached by welding shall not be acceptable & . or the Assembler who performed the adjustment. 8.

ally justified and with written approval of KOC: a) When the pressure vessel contains material that may render PRV or its cornponents inoperative due to choking or clogging. 8.2 However it may be used only iñ combination with a PRV under certain conditions as mentioned below provided its use is absolutely. marking.1 The rupture disk alone shall not be used on any pressure vessel. 8. f shrinkage.2.34 No lifling levers shall be provided on PRV intended for process operations/service. or c) Where contamination of the atmosphere by leakage of noxious fluids rrust be avoided. or d) When very rapid pressure rise are anticipated or encountered 8.2 Rupture Disk: Bqq!¡iremenÞ 8.1. voids. d' . service and/or process conditions.2. certification.33 Lifting levers shall be provided only on PRV intended for Air. pressure equipment.3 The design.1. lumps. shall be free from REV. shall be strictly in accordance with the applicable rules and requirements of the latest ASME SectiorrVlll Division 1 and this KOC Standard. or b) 'fühere a loss of valuable material by leakage should be avoided.1.Jix-2 of this Standard. code symbol stamping. 1(OC-MP-027 PART I Pags l$ of 35: 8.2. 8. 8.32 All castings for PRV shall be true to form. accessories etc in the relevant KOC Data Sheet (Appendix-1). strains scales.1 . Vlll Div.DOC. 8.¡O.2. 8. or Nitrogen service. 825 The Manufacturer shall ensure that each Rupture Disk has been duly marked with "UD" Code Stamp as per ASME Sec. based on specific project requirements. genuinely. when specified. f. and other requirements of Rupture Disk. materierls. or pressure systems.6 The opening provided through the rupture disk shall be sufficient to permit a flow equal to the capacity of the PRV and there shall be no chance of interference with proper functioning of the valve in case the rupture disk burst.7 For the Pressure-Level Relationship of the Rupture Disk refer to Figure-2 of Appen.2. and specifir.2.4 The KOC should indicate and mark as applicable. 8. manufacturing. sandholes and other defects etc. items such as type.

then a bellows type PRV shall be used under the following conditions: a) Tlre sum of the variable superintposed back pressure plus the built-up back pressure exceeds 10o/o of the PRV set pressure or cold differential set pressure.Pasis of Selection 8 3. b) Fr:uling or corrosive service conditions are not expected as it may affect the upper part of the PRV.2.tloc. their bonnets are appropriately vented to the atmösphere. either constant or variable is certainly present c) lt must be ensured that when balanced bellows type PRV with auxiliary billancing piston is installed. 1 The conventional PRV shall be used when all of the following conditions are met: 8.2 a) The sum of the maximum variable superimposed back pressure plus the built-up back pressure is less than 1 A% ú the PRV set pressure. b) Fouling or corrosive conditions are anticipated and protection cannot be afforded by using alternative materials or devices. Bellows Type ln case the conditions specified in Clause 8.3 PRV: Criteria and. d) 8. Excessive pressure may built-up in the bonnet as a result of pressure brrild-up in the bonnet-vent piping and as a result of built-up bonnet pressure.e . PRV. c) lf the service fluid is highly viscous or of a nature that it can enter the critical clearances behveen the guides/disc holder.1 PRV: Conventional Type REV.3 lt of a bellows type PRV when installed. QT )> ü. No. Koc-MP-027 PART I Page 20 of 35 8.3. shall be appropriately vented to the atmosphere. a perilous condition could occur any moment.3. * .Í.1 (a) and (b) are not met. rs essential that the bonnet PRV: Balanced Bellows Type (with Auxiliary Balancing Piston) The balanced bellows type PRV with auxìliary balancing piston shall be used under the following conditions: a) b) Back pressure.

8.4. such as use of additional PW. PW valves specified here shall be used on atmospheric and low 8.6 Normal venting for pressure and vacuum shall be accomplished by a pressure vacuunr valve (PW) with or without a flame-arresting device as required by KOC.10 The tVlanufacturer / Contractor shall ensure that the requirements for a frangible rooËto-shell attachment. unless otherwise specified by KOC.r Atmospheric and Low Press. storing h.DOC.9 8. the PW shall never fail to protect the tank on which it is installed.8 pressure storage tanks in which petroleum or petroleum products are stored.MF-027 PART.4. the internal pressure of each tank under any normal Operating condition shall not exceed the internal design pressure or the maxirnum design pressure. NO.4 PRD: F VV fo. minimum ratings. and class of the inlet loutlet flanges of the springloaded flanged type PW intended for atmospheric and low pressure storage tanks shall be.4. RF. or a gauge hatch that permits the cover to lift under abnormal internat pressure. The Relief devices equipped with a weight and lever arrangement shall not be L¡sed.12 Twin frW shall be installed on all atmospheric and low pressure intended for pressure.4.5.I Fage 2f of35 RËv. 8. 8.4. addition to several provisions for emergency venting. 150 # ratings.3 The P\A/ intended use on atmospheric and low pressure tanks for pressure and var:uurn release shall be spring-loaded type.ge_Tanks 841 The Pressure Relief Devices for atmospheric and low pressure tanks shall be designed and manufactured in accordance with API Std. ln 8.5 The type.4.4 The PW intended to be installed on atmospheric and low pressure tanks shall be flanged type. 8. a frangible roof{o-shell attachment. 8. 8. as described in API Standard 650.1 1 The materials of PW and its associated piping shall be selected from the KOC Piping Material Classes based on the stored product and the service conditions to lvhich the PW and its piping are intended to operate' 8.ydrocarbons (sweet tanks or sour) irrespective of size and .4.4. are strictly followed and met. is most imperative.4. 2000.1' 8. and the class shall be as per the KOC Piping Material Classes.4. 8.7 The PW shall be designed such that in the event of failure of any of its essent'al parts.4. KOC. ASME B 16. as specified in API 650.ure Stora.2 The Pressure Relief Devices intended for storage tanks designed for low internal pressures shall be sized and set so that at the rated capacity of the devices.

MP{'27 PART 8. when the above ground length of pipe exceeds 1to/o ol the total length of that section.5 PR?:. 8. Figure-13. NO.1 The inlert of a PW shall be fitted with butterfly type isolation valves and carseal.3 This shall not cover insulated or buried piping/pipelines which normally operate at above the ambient temperature. conventional of the section divided by '¡¡edge gate valves exceeds the liquid volume 60 meter.4"t4 The isolation valves installed with pressure vacuum valves shall be butterfly type. and full-bore. 8. unless the :.4.4. and Figure-16 of Appendix-5 of KOC-Mr-027 Parl2. unless otherwise required by KOC: a) On each section of the cross-country pipelines between main line l:lock-valves. considering p any other weakest co sy r-1" . 8. co shut irr.1 5 It must be ensured that both the twin PW installed on atmospheric and low pressure tanks shall be identical in all respect including size and capacity and pressure setting to help interchange the parts and reduce the inventory.ïhgrmal Relief Vglves 8. and is subjected expansion due to rise in environment. The seit Pressure of the thermal relief valve shall not exceed 110% of the maximum allowable oSerating pressure for the maximum temPerature during stress.13 T Page 22 of 35 REV.5. lsolation Valves. and stress.5 On that section of piping which lies between the storage tanks. 8. KOC. in which the liquid is stranded and heated between the block valves. 8.DOC.um of the cross-sectional flow area of non-blinded .5. Figure-11.5. c) 3n the piping in the heat exchanger in which the liquid is blocked and reated between the block valves. Figure-12.16 For additional details showing installation of Twin PRV. refer to Figure-10.5.5 2 This shall not cover the expansion of liquids in the piping or pipelines due to fire contingencies. b) On each section of above grade plant piping carrying liquid which is blocked-in or stranded by tight closing valves and blinds. 8. flange ratings.1 The thermal relief valve shall be installed on all such sections of the pipeline carryinç¡ liquid hydrocarbons. wherein the liquid is fully blocked or stranded. or in the tank farm.4 The thermal relief valve shall be instalìed in the following conditions.4. resulting in the rise of internal pressure that may exceed the maximum allowable operating pressure. d) 8. 8.

6.'cvar thc. in tu.027 PART 8 5.2 ln case the block valves are not available. the system and the plant. unless physically cut by a wire cutter or by forceful hammering.xrcif*r/ this dc¡cu:nent.r¡. Ilcndet is tltt:rcfiva ¡r¿1t.s The outlet of thermal relief valve installed on the pipelines. KOC4'1P.ation of the thermal relief valve on sections of cross country pipeline shall be selected by KOC based on accessibility.'l¡e .y ure '|. 8. 8. constitutc en essantial gjelr?enl ú PRÐ asscgr${t. replacement. NO. 8.Vla*¡liactttrar / helot'.s¿d to uhitle þ)' t]rc tecl¡tt¡cul ret¡uírenents as .lNT NO'lþ.6. then as an alternative.8 The isolation valves Classes to KOC Pi er Þ * þ .r. 8.6.since tltet.sottitiot¡ ltlock :'.7 The thermal relief valves which are not located within a fenced area shall be provided with suitable cover to prevent tampering or damage.6. 8.7 The minimum flow area of the selected isolation block valve shall be equal to or greater than the inþt area of the pressure-relief valve.6 lsolation Block Valves and Car-Seals: Reouirements I*lFOR7'.6 The isolation valves shall be carefully administratively controlled to achieve maximum safety of the equiprnent. and parameters. valve safety. the gate valves may be used for isolation purposes provided they are installed with stems oriented horizontally or if this is not feasible then the stem should be oriented downward to a maximum of 45 degrees from the horizontal in order to keep the gate from falling off and blocking the passage of flow. 8..5.5. 8. which releases hydrocarbons or other liquids/vapors shall discharge at the grade or as required by KOC.5.tnl . tlto¡tgh no! <t nrumleilot1' ¡rurt eJ ìilp()rt.3 The isolation block valves shall be provided with appropriate Car-Seal Open facility.1 The block valves shall be used as isolation valves in combination with PRV to facilitate in PRV maintenance. 8.6.8 The outlet of thermal relief valve which releases hydrocarbons or toxic liquids/vapors inside a plant area shall be piped to a closed piping system.6 I REV.6 4 The Car-Seal intended to be used shall be strong enough to resist any ordinary mechanical shock or blow and shall not be able to be removed when installed in place and locked open.se the isolulit¡tt hloe'k t'alvc.: 'l'|rc: i.t.r. httt'.5.DOC. 8.s aud <:ar-scals ara ortlerccl h). KOC'.tlvst and lha cur-scul. 8. 8.6. 8.6. size 8. l The lor.5 The isolation block valves used for the pressure relief valves shall be full-bore roddable type. or other purposes.10 The therrmal relief valve shall not be less than 3/oin.

or Hastelloy C-276 (UNS N10276)). if not specified in KOC Data Sheet (Appendix-1). NO. 9. shall be equivalent to or better than the types and grades as sper:ified in API 526. hydrocarbons (Liquid / Gas: sweet or sour) or water (produced water. and it shall be suitable for the service conditions and shall also satisfy'.DOC. whichever is more stringer t. l 9.0 PRD: MATEFIAL REQUIREMENTS 9. effluent water etc.) and it shall also conform to the KOC Piping Material Classes.35 REV. 9.2 The pressure-temperature ratings of inlet and outlet side PRV materials shall conform to the requirements of KOC Piping Material Classes or project specific requirements as specified in KOC Data Sheet. if not specified in KOC Data Sheet (Appendix-1). oq The spring material of the PRV shall be. brackish water. 9. shall conform to the requirements oi ruRCe MR0175 / ISO 15156 for sour service.3 The materials used in the manufacture of PRD (and isolation block valves if requirecl) shall be suitable for the sour service and shall satisñ7 the requirernents of NACE MR 017511SO15156. as well as conform to the requirements of KOC Piping Material Classes.he NACE MR0175llSO 15156 requirements br otherwise as specified in KOC Data Sheet. 9.6 The body and bonnet materials of the PRV shall be same. However if they are ditferent.5 When the pressure relief valve incorporates bellows and it is to be used in sour service. suitable for the process and the service conditions and shall òonfot¡'n to t'he NACE MR 0175 / 1SO15156 requirements for the sour service' For the sour service condition. the minimum material requirement for bellows shall be Nickel based irlloys {such as lnconel 625 (UNS N06625). if not specified in KOC Data Sheet (Appendix-i). However the Manufacturer / Vendor shall also ensure that the¡se materials satisfy the NACE MRO175 / ISO 15156 requirements for sour serrvice.e.7 The mirimurn body and bonnet materials of PRV.8 The Manufacturer / Vendor shall ensure that the PRV trim materials. KOC. then each of them must meet the minimum pressuretemperature requirements of the system. rþ .MP.'1 KOC should consider the project specific requirements when specifying the materia¡s for PRV in KOC Data Sheet (Appendix-1). 9. it should preferably be nickel-based alloy such as lnconel X750 or equivalent or better or alloy UNS N07750 or N 07090. 9. as well as Koc Piping Material Classes.Oz? PART 1 Page 24 of. 9.4 The ManufacturerA/endor shall ensure that the materials used in PRD (and isolation block vaìves if required) are appropriate for the intended service i.

11.-] d * . 10.000 psl). '11.2. and associated component in accordance with the purchase order or contract documents.9e4ification 11.10 9. 11. KOC. design and workmanship. and the hardness not exceeding 22 HRC. f The PRV springs for additional protection against corrosion shall be coated if reguirecl by KOC. NO.!- . 1O.1 Guarantee All Pre3sure Relief Valves and their component and parts shall be guaranteed by the Vendor / Manufacturer against defective materials.2 The Manufacturer / Vendor shall submit to KOC. The ferrous materials components of PRV when used in sour service.MP-027 PART 9.O GUARANTEE & WARRANTY 10.2.1 1 I Page 25 of 35 REV. 11"0 INSPËCTION AND TESTING 11.DOC.2 llUarrang¿ The Vendor I Manufacturer shall provide a Warranty against all Pressure Relief Devices.tion and . shall have the Yield Strength not exceeding 620 MPa (90.3 The testing of PRD materials shall be carried out by the Manufacturer or by an accredited testing laboratory approved by KOC- ¡.þ ¿. The coating shall be suitable and compatible with the service fluid and the operating conditions.2 lVlaterial lnspec. the duly filled out KOC Data Sheets for PRD for review and approval. par1s.1 Materials of construction and quality of workmanship shall be inspected and certifiecl in accordance with the requirements of applicable standards referenced herein and/or the KOC Data Sheet (Appendix-1). Material test certificates shall also be submitted to KOC for review and approval before start of manufacture and or assembly of PRD.2.1 General The Vendor shall carry out all the KOC requirements of inspection and testing as specifìed in Contract document or Purchase order.

assembly. monitoring (M).3 All inspection shall be made at the Manufacturer's own facilities prior to shipment and shall be conducted in a manner as not to interfere unnecessarily with fabrication and assembly operations. inspection and testing and packing for shipment in a chronological order.NOC.MP4?T PART 1 Page 26 of 35 REV.3. 11. assembly. or purchase documents. inspection. The plan shall include fabrication. as well as the trim parts.3.| 11.3.5 PMI is not a part of a mill certificate and shall be made by the Manufacturer at its mill subject to witnessing by KOC and/or its representatives as indicated in the KOC Data Sheet (Appendix-1).4.1 The equipment vendor shall prepare and submit a detailed quality plan for KOC approval. NO.4 Positive Material [dentification (PMI) (wherever applicable) of pressure comporents such as body and bonnets. assembly. 1 1.3. 11. KOC will decide if KOC inspector will be present at all times when work is in progress. and reviewing (R) in the ptan' The approved quality plan shall be strictly adhered to throughout the entire fabrication. if deemed necessary. the acceptance limits. showing the frequency of control. made of ferrous or non-ferrous alloys. of the PRV (and the applicable parts of Rupture Disk if applicable and required) shall be made as per the guidance of API RP 578. . KOC. and confirm the requirements for witnessing (W)' surveillance (S).4 9ualiïy Plan 11. inspection and testing of all pieces and parts of equipment and supplíes covered by this Standard.1 The vendor shall be responsible for all required QA/QC and inspection work to satisfy the requirements of this Standard. the governing code and whether a document or report is produced for each activity' b) Pre-inspection Meeting (PlM) During the PIM the vendor and KOC will review and finalize the markup oi the lTP. and testing period.3 Shop lnspection 11. The quality plan shall consist of the following: a) lnspection and Test Plan (lTP) The ITP shall list the sequence of all inspection and testing activities that shall be carried out by the vendor and Koc or Koc appointed third party. 11.2 KOC or its appointed inspectors shall be notified a minimum of three (3) weeks ir-advance and shall be provided access to Manufacturer's / Vendor's shop(s) during fabrication. 11.3. þ . to witness the inspection and testing cf materials and the equipment covered by this Standard. KOC may additionally employ the services of inspectors.

5.tabilitv 11.3 The Manufacturer / Vendor shall abide by the requirements of ASME Section Vlll Div. and are fit for the purpose.1 The Manufacturer / Vendor shall ensure that the all Pressure Relief Devices supplieC shali meet or exceed the performance requirements as specified in ASME .1 for markings on PRV and Rupture Disks.1 ln addilion to above the Manufacturer / Vendor shall ensure that each PRV has been duly marked with "UV" stamp and the Rupture Disk has been duly marked with "UD" Stamps as required by this Standard.1.2 Each and every PRD supplied shall satisfy the set pressure and seat tightness.rTC-25-2001 (Performance Test Codes). Vlll Div.5.5 Acqep. markíng. Markìng and Documentation" (KOC-G-004i 13. MARKING AND DOCUMENTATION Packing. Verification of Manufacturer's / Vendor's quality system is normally part of the pre-qualification procedure and is. The quality systems shall be preferably based on ISO 9000 series of Standards and the Manufacturer I Vendor shall demonstrate compliance by providing a copy of the accredited Certificate and a copy their quality manual. not detailed in this Standard. 11. 13. NO. and other requirements as specified ín KOC Data Sheet (s). KOC-MP{z? PART I Page 27 of 35 REV. 13. 12.3 The Manufacturer shall fully ensure that the supplied PRD conforms to the requirements of this KOC Standard. As a minimum requirement the following shall be marked on the PRV.0 PACKING. Further all other markinç¡s on PRV shall be as per the requirements of UG-129 of ASMË Sec.0 Q-UALITY ASSURANCE The Manufacturerfuendor shall operate quality systems to ensure that the requirements of this Standard are achieved. 11. therefore. the codes and standards referenced C [it"eria herein. and shipping documentation shall comply with the requirements of KOC Standard for "Packing.5. I 11.2 The Manufacturer I Vendor shall ensure that the required data is marked on PRV and Rupture Disk in such a way that the marking shall never be obliterated in service. a) b) c) d) e) f) s) Name of the Manufacturer Manufacturer Design or Type Number NPS Size Set Pressure Certified CaPacitY Y:ar of Built ASMË "UV" Symbolor ASME "UD" Symbol (as applicable) Þ r- tL * o tu .DOC. 13.

MP. Calcula:ions shall be submìtted ìn widely used software forms agreed upon by KOC. appurtenances.2 The ManufacturerA/endor shall subrnit to KOC for review and approval the Manufacturer's Record Book (MRB) wìth all the test certificates. and equipment Data Sheets (with blanks filled out). Excel.0 pocuMENTATlol¡{ 14. In case of dual languages. for the equipment and materials supplied in accordance with this Standard. and drawings shall be provided in approved electronic software forrnats {Latest versions of Microsoft Word. (Pipe sizes shall be shown in inches). drawings.1. all final documents such as specifications.1 All correspondence.1 . f 14.1 Test Certificates and "as-built" drawings and Data Sheets of equipment and its parts. 14.3 ln addition to hard copies. Data Sheets.O27 PART I Page 28 of 35 REV. calculation or any other written information shall be in English language. NO.0 SPARE PARTS & M. 14.2 DeliverFbles 14. and AutoCAD).0 APPENDIçES 11" .2. 14.2. 14. one language shall be English. unless othenvise specified. instructions.2 All dimensions.1. and materials as covered by this Standard shall be submitted to KOC for review and approval before packing and shipment.1 Generql 14. 16.DOC. units of measurement. Data Sheets. KOC.AINTENANCE ÐATA The Packager shall comply with the requirements of "KOC Standard for Spare Parts ard Maintenance Data" (KOC-G-009). shall be in Sl units. physical constants etc. 15.

TpTX-1 DATA SHEET: . f-¡o.P PRESSURE RELIFF VALVE (For Additional details Kuwait Oil Company refer to API 520 Part l) fåge sh€et ¡{o. 24. ì I LifiìngLev. 45.¡6 A¡¡D SÉLECTION Frerçure 44 45. U *rrtç: nitç: 5¿.Èr: Pl¡lnI lFåctèdf l¡]oneI I Trçt Íì. 4 l/ Þ r ¿J . Celfril ¡t*¡'l ('lri flrÉ ÂrÈâr qêlê{îed Eft¿¿tivê ôrifire Ar O.SP.IG LOAD.RVrCE Âc€EftoRlEs COÍqÐÍrO¡¡t C¿o: SirevT€dl lEÕltedf 3{. 17. / Íntlicate items to be filled Èlodrl I'lumber: Vendor C¿lculations Re€ulr€d: Yes I Xl No t in by the ManufacturerNendor with an Asterisk (- v qtu I (*)./lqol '21 7Ì 4 godv: t8. 51. 39. Koc-!tP-027 PART f Page 29 of 35 REV. I Ø APPET. I 2 29. 40.âPl 526: Flref lOtherf l9oecitu: 4  Ësotur€ D. 5. R€quÍsjtion No.rh: VAIVC DEIICN Yes f l' Yrsl I II No Not I ¡'lol I f I MATERIÂL5.RII. Requlred Cape{lIT per Valve and Unitgr lb/hr o_ oûèràrlnô Fressure and Units: a.rildp: YÉ! I I Nr f I Scrsen: Iì ltlo !t ßus 3 O¡her 4. 8pll0w6' ¿ Sålanced Pirtrn: Carr!filv NÂCE MR Ol 7ç.E. tth€r I ttçk1 \'Taiher: q 156: YÊç f xl þlù t Ì I soe(itu:' 5 9[.ifirÊ nFtirinãa¡ôn f ìÊt'lÉr Månufa{turer t{êrne: t Y¿s f I I Ssecifvl II Orher f Blorvdownr Standard Làtent Heal 0r VaBo¡i¿elion and un lç: re 3l¡ll. 1ó ì t1 COI'¿NËCTIOì¡5. 47 NOTE: KOC ta mark 51.Ðoc. SPRING LOADED PRESSURE RELIEF VALVE SPECIFICATION SHEET of DåIÊ Revlçed &l 8A$S OF gÊLECTION CÊNERÂ[ 5 Code: ASME blll fXl Stamo Reçuired: Yeg flthlr f I qnÊr 6 CodtÞlv rrelth. Bonnct: ìl 2 Sêåt {ñ¡o¡zle}: Rê3¡liañr SÊåt: õrr¡¿tê: 7 2 AdIUsl}nE R¡ßq{E}: SEfinq.

BodvlBonnet: ?7.8: I lRr$0¡reDj¡lc YÊs tI II olaphragm BdrcÅ¡vt f 21. îuUngJñTþ'¡q!: co?{1.hTP{27 PART REV.f V"F.OPERATED PRESSURE RELIÊF VALVE SPECIFICATION SHEET Job No Date ì€.retjú¡ ad Unís: Tenïer*u¡s sr¡d II I\¡o I Ur!þ: st¿¡NG A¡¡Ð SELECTIOII efid 53. ffi¡Gen*¡t fe* P¡stsure ¡nd|Jnrb: 56 qlt*¡rahtã Overpo. ¿8 ít{ Pacftâd I¡¡¡ns ?o Te€¡ l¡tdacãlq: Yea I r. [ | Re*lhrtt [ ] t5. lCar¡fu v.¡EcTlol'¡3 l4 Rüts r*et $i¡ç: ñtrf-- Focr€É Rtrç Fæi. fficeA€a 61 Ulìtl$: 57 NOTE: KOC to tTtark/ indicate items by the Møn an Asterisk (') rþ . t I 14 Sed T19e: [¡t¡]s¡. Re¡ÞÍSd 3e*: 11 Prbl Typa: Fk:$rrg t) Filol 23 I3 Prlol 24.t€dr¡¡ùt¡g t I Senss lnlrnal I I RênÌd.o.rrirsd lv BASIS OF SELËCTIS}I GEI¿ËRAL vn tsm NurY¡b€r: ') 4 Í¡g ttlt¡¡l¡er: ô S¿nrco. 47 5?. Pi*bn I I Ye¡ hston Seal: MÁTERIALS. MÀIN VALVE 10 II INo OlhÈr VALVE OE. Sêå SÈ* ?cì 3ó.. Ê:ttÍ Li¡erÊüiia: I I Åcnrft Fæ I tr l.b Jp€r"@Ptaeture ãn¿ t l¡vts: Þrsassrs ¡nd t-b}it& aiffi¡ru EO Lorent tteat 51 Op€r¿ling 41.¿cl Pree*¡ro and Unit¡l 64 NÔ 37..I DOC. Sê{tl\|ÊøB} Fc¡sr ?2. ûlhsrllSoeol¡¡ ACCESSORJE9 s€RvtcÈ coNDlTlol¡s 43 35 Rurd efid SlålÊ: '. FieH Teet Csì¡ì€€rion: Ye€ ay 45 €t.aturo ¡nd Units. à.. PILOT 26. KOG.{t"itelã. PILOT.n!t-up B*ek Pres¡re ârld Uürts: r¡pe$m*e¡s8d 8.*t AFI 5f. Fiher Yet 36 4.ts*¡e iJì P€rc€nt d 59. P¡ld{Vent A¡nrolFfwre f.ERATE D PRESS (For Add¡tianal detaits refer rc API 520 Part l) DATA URE RE LIE F VALYE Kuwait Qil Company No.¡c I ¡ Þlun{:er ol Filot¡: ¡¡onr¡ceiltng Yee MATERIALS.sIGÈ¡ L OsiqlrÎypG.r*' 32. lntarn¡I¡: l 2t.1 55. NO.1 Page 30 of 35 Ø APPENDIX-1 S HEET : PI LOT-OP.rì*co*ity el Fkrfft¡g tåmp€. ot EcËr¡Þnrer¡t þlr¡ntl¡en Nurrôer Rsquked. Spnng: 33 16 4. lTed Ga€s: Ye3 Srônd'rd t I O{þr t I . SÊ¡rTlqhù'aûf AFr527 t I t I Outlôl't r6. bne.

)Ê8!Cn Code ode or Of Slândsrd S¡ândg issr{ or Ftlin{ MÁWP 7 I I Reau¡re. Job No. ùôaàRê^aia€ 38 Studs & l. pt€sgute t7 SupenmBcs€. Sçeof¡c H*¡t RaUo {A l5 À{êxlîurÍ i. aitrnl¡fâc1lrÈfs Bûta :-: NOIEr KQC to mark / indlcate items the Manu ith ctn Asterisk (") ¿r . No. Lne.nalof 33. D€ft DS* Locatecl ocvrnsream :Janac st¡aelæ:l o1 \rair€ {Y€dno) 27 28 Á C!æ!t Faee FiDtno scnedute Ru6tura lùsturu D|6t lioldêr ff Bôîe ôltk 41 Nf}mñrl.lutÊ (vftu {t Matl Jãrl(Êrreçrs {vËgTioI l*$âlå Assv lv]nl & rdåü 40 Olher 37 nù$]snatof Id¿n 53. ûusntllv Re{Îultêd 3. orEqúp. Câmtr€69lbll*ì/ Fa€to. Bðt¡( Pres6ufo 70. 4!.nr€k St"e ¡¡2. NO. RUPTURE DISK DEVICE SPECIFICATION SHEET nale levlseú åral 1 tìem NufnÞer 7_. Ø APPENDIX.MP{}z7 PART Page 3t of35 1 REV.DOC.tari(Éd Bu¡sl Pr€$gofe 50. Tåû l.Jrrânltlv Retruì:fed . KOC.lurnhér 6 rKJód gerYlce. . ûeJrxr Tvûe ¿3 L{{}dÈt 32 4d.t5. lnlel vðc1turi1 cofi dilo$s 21 ¿t 23 26. [t*ï¡lìùtufilrd Rãnoë ó€.{û{tr€t Das. sDs€lfiÊd Bursl Te¡ïBeralure 47 3o€¿lflèd 8llñt FresÉurÊ 29 3t Ho{ü¿r T:xr l{o Nûmlnãl Hrrd*r SÊe !.eGllfia Eâtlo 5l r{ðx Floll9 Reselance K ¡ 52 Êr¡rl¡]fe Dlsk ñlater1al5 d8.d Rellev*ìa CaÐacúv 10 frcÉecuhr Wetqjtl or Spccrllc Gra'\rrty lt 12 13.l DAf $HEET: RUPTURE DISK9EVICE (For Additional details Kuwa¡t Qîl Campany refer to Afl 52A Pqrt l) F-?E d She¿l Nõ . .¡oÍîãl Ètaxìmum Ûp€rallng TemFËr¿ture 16.t8 8õct Prssgure urlt{p Eack Pless¿¡re lg.f. os.d 14 . Dlek Tvûe 3t. I Reautsltiari No.t Hrkfer Målefiãl lnl€{} Heklêr Mat€nÊ¡ louugtì 3n {ìilm 1¡õ ¿vesiÌ{il å Sfze frÐ( llarked Bu$t Pre€sure lr.

¡ÈûI1$¡ 12t r !ËJm¡ruf åttffie*ûtrænßf rñ¡üþ"llrartÞs¡[Èr!.n üWçdl €â€l. 1. l'B.r$r.[or guidance on hlo*'down arul prcssu'e difl'erentinls I.cùüaffi0t Psaræ fr¡st\¿rrlr* ¡|ffiÃT! fçf3rrl?il'SräsrFü: tf. 121 für.PRESSURE-LEVEL RELATION_SHIP FOR..4SME iec¡ion ll . ll þ .2 FIGURE-1: THE-.ralure I'he operoti$gle¡rrpetature nay þe þigþst' ot' lov'er than g0 psig. KOC. 3. Thi. ! I úñ# ffi *uSFtTel*¡ lËlÊ't çttrÊ|fpo*.PRV (Sau¡ceiAPI S2tì í'art l) :Vd Ft!ú¡çvf¡¡cñe$ú¡!û$re Èa¡G88 tlltsn¡¡märÐ sûaûilSûlltSræü¡rr. u.'equircnrcnts a.r!! 'tr åL lÆt¡drÌ¡ñ¡ Fç!¡tE rc5 L/þdir¡$t ü¡on¡þr rr* ÊftúJrr lor ldct?fin¡r¡ rr¿a$tt Sr¡crgtl å Ë a Hdñn¡$*lmùe.[ar PRV installed on a pressure vasselT'lte allowable se!-pt'essure tolerance u. dcsign tetnpe.hügÌ û. I for lvlAIlP g!'eater than 30 ¡tsi. Div.. 8æ4riht iaå:fiïEn É¡lvlt$ Ff tfætr*ûg lla$¡ir¡ñ¡þËrbÞ g s{È.llræ1ç tà/|Þvllvð lrffisDrüûtdno FËtrlr¡ ?F¡æcrsa:afg.ith the . 95 ixotllg Fn {¡¡ftF*r ûfllllcv*¡r ¡daË{u*} ctnc{lrÛ LçAr læt $rês$¡fr oFüd¡rgslr. I Refer to . 6. NO. The pressut'e conrJìtio¡ts sholn are.{sr. 'I'he üttti¡nun allotyable vorking prussure is ec¡ual to or grealer lhan rlte desÌgn pressat'e for a coincirlertl 5.s Figure conforms v. lEith{tli¡ç *3æqrü il6 r15 't}Ëtd.üTP{}2? PART Page 3ä of35 { RETI.DOC. T APPENDIX. .ill be in lccorclance *'ith the ap¡slicahle codes.*nufC ¡rrfirl b'i l {s$ilr rìãû ü}èYFæ¡¡rËl rru ¡Ë Srüñunt &.q*c {roc l{ß:kt lt!?Hrl tð!Éq} 85 NOTES: 2.t¡drt'þfi Ê le.0 l{Eia4} ñþ)ô?riiñi üsñ¡a ¡d trsüs!þr¡DSrwñ¡ê Ë t gbtdfi.tr¡re{3¡¡Èftrtrtrrrl} .f ÅSÌllE Scction Vltl Div.ülftgÍq¡''e ú drJ0fllfl|rFé (st.

{åaÊ t}eèÉ . ó. a Rrpfurç Dh¡r OeìñcÊ ttâ*ä¡m-rË€r{tgFtttsl¡¡Ë turftflÈf{e$ gJldre*þ aacrrmr¡lêle{t púEstùÈ fçr nÍBf*t&rì ef å rìl¡lijFgË n$türê ü}3t{Eivt€Ë (alhlr lipicã] Cfl¡T-ðçtcd¡tki l¡1afi 116 1r! ü! erpexre) Mûx¡tuf't ¡ellårrç ffÊ3ê{lra prûc€ti r¡¡f¡& tBr lfußþE ftStr¡rê nþ¡ dü. 'this Figure ssqfonns with the requirenents of .\ J ril'e.¿kffi èñts Pfeigur! Lts¡gn¡1ì û¡þir¡¡t¡l¡t acãjmdlùtã ¡fæu¡c (trll. 5.rne FnEsSUne+eV 6ourceultlÅ2UsLú ve*f*t Pr*!+uf * \'c*sðl Reqr. 'flrc pressut'e condition. 3. nt n' ke d Lt u rs r f a I I otç' q h I e rc.ith the applicable code.ircc¡ S¡ndÊ ruplûrE Mü¡frill{¡t aãsrvrùþ âcctnT¡¡5têil [rer3¡í! für hsl¡{aîtgâ al¡ sÍrytÊ ruttuË d¡sk d. 2.trq pælsrnt ol de**n pr?srJ& Mil¡ðmum {sqs Ncrto 3l !T Àt8¡únllm sl¡E1liûbþ rñaf k?d ã Ir{rít Frä8un tùf r¡figlr Rsû¡cr 6fldev{æ È : f.assure tolerc¿nce x. KOC.DOC. I fot' )Vl. M€¡rcfnum 1¿ I tlu (:.çt considered in the selection a ntplure disk. P l* . 'llta allovable hurs!-pr.\¡lrc uu. T /Courinued) FIGURE-2: . 4. .¡?È) l.ç .4IyP gt"ealer than 3A psi..rlnv'n are for RupÍure Di-sk Deviæs installetl on a prussure vcs-scl.ill be in ac:corrl¿tnce v.g prcs:in'e ¿n¿l the opcruling prc.sÞte rllå¡têd Þ{q3Î pñt*rrË tur ¡tlpp€ñnQ¡¡¡ {l:rp €rFq{ãa) ruplurE dßk dÊr¡ice (Èeü ô À É l{ðt.sùb *o.45'llÇ Section lllll Div.1.lr (r€e ftetçr ã ãfið 6) NOTIiS: l.þrrnrm ãllÊer€Þl€ rnartrrd Brlni Ff¿39r¡rê I fs âdgtÞmal ruslrf* drg( q*$ct (eæ¡r. 6l crjÊfFr€5{nr ínûËnum} Ë g g * 1 05 [. Êx9û'lrr! Énv.{ €) 95 Llå&'nÊ¡m erpÊ{tûd ûpêrelr¡g paggsb. lhe mnrgin !:atween tlrc maxinunt sllov'alsle rlorÀlir. 'fhe operoting Dressure nûy be highe t' or lower Íhun 90 psig disk design ttt &Y i ¡¡t u tÌ¡ any fite narked b'uts!-pressurc of tlrc l¡e .rt @€e ât ¡ J 110 ! tsl6¡**+Jr:l a{¡grf.MP{2? PART APPENDIX-2 I Page 33 of 35 REì/.s. HO.ì1{È {cËrcr lhafl ûri ¿ryúEr.lç6) ü E f ã!fr.

Tech. No. Tech.MP-027 PART I Page 34 of 35 REV" . (N & WK) q IL rp . Svcs OPE TIONS GROUP IWK) EXPORT & MARINE OPNS. N. S. Team Leader Project Design Team Leader Utilities Team Leader Safety Team Leader HSE Systems TIONS GROUP ISKI Team LeaderOpns. Standards ïeam lnsp. Khalaf Harnada Major Projects-EFP Team Mr.Ðoc. Team (N&W) Dr. Team (NK) Mr.hmad Utilities ïeam Mr. Moataz Khalaf Mr. Projects Team Mr. Amina Raiab Design Team Mr. Team (SK) Design Team Mrs. Ëngg. Tech.RATIONS GROUP {NK) DrvrDED ?ONE GROUP Team LeaderOpns. Modistaba Araghi Project Mgmt. AJRedha Al-Haddad Mr. Svcs.GR9LF. & Corr. Abdut Aziz Akbar lnformation System ïeam Mr. Kumar Mr. Svcs Team Leader Drilling Services OPE. Daniel Pino Mr. Team (S&E) Standards Team Opns. & Corr. Svcs Team Leader Proj. Khalid Al-A. Mohammad Emam Mr. GROUP Team Leader Export Services DRIILING OPERATIONS GROUP Team Leader Opns. Koc. Ramanathan Gen. Henry Hill Chairman Depug Chairman Secretary/ Member Member Member Member Member Member Member Member Member Member Member The draft of this Standard had been circulated to the KOC User Teams for review and the responses were received from the following: ENçINEERING GROUP MAJOR PROJECTS GROUP Team Leader Design Tearn Leader Project Support AHMADI SERVICES GROUP HsE. Tech. & Corr. & Facilities INNITSTFIIÄI SERV¡CES GROUP Team Leader lnsP. Ali Hassan Al-Failakawi HSES ïeam lnsp.| ACKNOTìILEDGEMENT This KOC Starrdard has been approved by the Standards Technical Committee (STC) consisting of the following.

{NK) Opns. Svcs. Tech. Svcs. (SK) Opns.This KOC Standard for Pressure Relief Devices: Design and Materials" {KOC-MP027 PART 2.23437 Ex: 20336 R il . Svcs. Raj Maharaj Mr. Miza Mohsirr Mr. Rev.1) has been prepared by the Task Force (TF-MPI07) comprising of the following: Mr. Adnan Bohammed Mr. Tech. Nawaf Al-Shehab Mr.22241 Ex'. (WK) TF Leader & Author Member Member Member Member Member Ex: 61 371 Ex: 66975 Ex:61815 Ex'. Zaman Mr. Mohammed Al-Ajmi Standards Team Major Projects Team Design Team Opns. Tech. Yousef M.