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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
ÐOC" HO.. KOG,-II|P-02?'PART

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ISSUING AUTHORITY:

STANDARDS TCIM

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Publisl¡ed as
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Task Force

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KOC-!iJIP-027 PART

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TAFLE OF CONTENTS

Paqe No.
FOREWORD

5

1.0

SCOPE

b

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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2 General Ðeliverables 15.2 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 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.0 DOCUMENTATION 28 28 28 14.0 PACKING.DOO.1 '14.0 SPARE PARTS & MAINTENANGE DATA 28 f 6. !{O. MARKING AND DOCUMENTATION 27 14.0 QUALITY ASSURANCE 27 13. KOC-MP.{}27 PART I Page 4 of 35 REì/¡ {: 12.

ilO. Mirza Mohsin Mr. Ahmad¡ 61008. Zaman Mr. (TF-MP/07) consisting of the following: Mr. operation. (WK) TF Leader & Author Member Member Member Member Ex: 61371 Ex: 66975 M Ëx: 20336 Ex:61815 Ex'. personnel and environment as established by KOC Fire and Safety Regulation. requirements of Pressure Relief Devices so as to minimize the need for technical clarifications and disputes. Svcs. and materials of Pressure Relief Devices to be installed on pressure vessels. and pipelines/piping throughout KOC facilities and installations. (SK) Opns. and should be directed to: The Team Leader Standards (Chairman. field installation. Svcs. KOC P. Tech. pressurized systems. Box 9758. (NK) Opns. Standards Technical Committee) lndustrial Services Group. pressure equipments. Feedback. and material selection of Pressure Relief Devìces that have applicability ìn KOC installations and facilities with a view to achieve quality. comments or suggestions. in consultation with the Standards Technical Committee (STC) for use and application throughout the corporate engineering and operationaf functions of Kuwait OilCompany. Tech. Adnan Bohammed Mr. as well as cost effecti'¡e a pproach. Raj Maharaj Mr. derived from the applicatìon of this Standard at any stage of design. Nawaf Al-Shehab Mr.22241 Ex 23437 r+ tt* . Health. Yousef M.027 PART I Page õ of 35 REV.DOC. Tech. Safety and Environment Managernent System (HSEMS) and the HSE Policy. 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. purchase. O. KOC-MP. and maintenance are encouraged. 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. Svcs. Mohammed Al-Ajmi Standards Team Major Projects Team Design Team Opns. material selection. efficiency and performance. manufacture. This Standard sets out to achieve the following objectives: > To specify the minimum technical requirements for design. atmospheric and low pressure storage tanks. reliability. This Standard has been approved by the Standards ïeam.

pressure equiprnent.DOC. 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.1 This standard specifÍes the minimum technical requirements for Design and Materials of "Pressure Relief Devices" intended to be installed on pressure vessels. the surface-safetyvalve.7 This Standard does not cover thermal relief valve of less lhan 2.0 2.1 APPLTCAIION The Pressure Relief Devices (Pressure Relief Valve. in KOC onshore facilities and installations. KOC-MP-O?T PART 1. pressurized systems.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.4 kPa (15 psig) or greater. and pipelines I plant piping with stranded liquids. pressure equipments. and pressure systems whose operating pressure is 103. 2.5 The PRD covered in this Standard are not intended to protect pressure vessels. NO. 2. 2. size roads.0 Í Page 6 of 3$ REV. 1 scoPE 1.? 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. pressure systems.4 The PRD covered in this Standard are intended to protect unfired pressure vessels. the subsurface-safety-valve and the pressure relief devices installed on drilling rigs and its associated equipment and vessels etc. and piping from structural damage or mechanical failure rvhen such items are exposed to extremely high temperatures such as during a fire. and atmospheric and low pressure storage tanks. 2. 2. and Rupture disk) covered in this Standard are intended for unfired pressure vessels (except steam boilers).6 This Standard does not cover the U-type blow out wet [egs. atmospheric and low pressure storage tanks. pressure equipments. equìpments and pressure systems including atmospheric and low pressure storage tanks against overpressure during normal operating and emergency conditions such as fire contingencies. 2.2 Any project specÍfic requirement shall be further elaborated and described in detail in KOC Data Sheet (Appendix-1) and/or Purchase Document. <r ri' n" Õ g- (/* . 1.4 kPa (15 psig).

1 Def.DOC. The actual back pressure at any specific time depends on conditions in the píping system to which the outlet of the valve ís connected.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. KOC. 3. Superimposed back pressure is the static pressure in the discharge header before the safety relief valve opens. or in actual pressure units.3 Blowdown Blowdown is the difference between set pressure and reseating (closing) pressure of a pressure relief valve.1. after the pressure relief valve has opened.1. or actual pressure units. 3. or vice versa.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. I For the purpose of this Standard the following definitions shall apply. expressed as a percentage of that pressure.0 TERMINOLOGJ 3. É qC) rl" .1. However for additionaldetails refer to APt 520 and API 576: 3. 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. HO. expressed as a percentage of the set pressure. 3. b) ConstantSuperimposedBackpressure a fixed value (constant) and exists (superimposed) continuously prior to and during opening of the valve.1.1 Accumulation Accumulation is the pressure increase over the maximum allowable working pressure of the vessel during discharge through the pressure relief valve.nillons f Page 7 of 35: REV.MP{2? PART 3.

ñtO.1.10 Leak-Test Pressure It is the specified inlet static pressure at which the seat-leak test is performed 3. closing pressure.1.1. rþ . or any KOC Team that commands and/or "ndlor manages and/or controls and/or executes a KOC project.9 Flutter Flutter is the abnormal. 3.11 Lift Lift is tre actual travel of the disc away from the closed position when a valve is relìer¡ing.6 Closing Pressure The closing pressure is the point at which the pressure relief valve recloses.1 . and relieving capacÌty are directly affected by changes in the back pressure.e. 3. rapid reciprocating motion of the movable parts in which the disc does not fully sit on the seat of a valve. KOC-MP-027 PART 3.8 Conventional Safety Relief Valve A conventional safety relief valve is a direct spring loaded pressure relief valve whose operational characteristics i.5 I Page I of 35 REV. feeling or hearing. I Car Seal A self-locking seal intended for sealing or locking the isolation block valves installeC with pressure relief valves assembly. 3.1 . 3.DOC. opening pressure.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.1. 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. 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.1. 3. When Car-Seal is placed in position and closed.12 KOC Controlling Team Any Kr)C Team authorized to initiate a request for procurement of material equipment for KOC. as determined by seeing. This pressure includes the corrections for back pressure and/or temperature and service conditions. 3.

feeling.1.18 Operating Pressure The ooerating pressure is the gauge pressure to which the vessel or equipnrent is normally subjected during service. for that metal temperature. which remains open after operation and does not reclose itself unless manually reset or replaced.1 9 Overpressure Overpressure is a pressure increase over the set pressure of the pressure relieivalve. it is the highest pressure at which the pressure relief valve is set to open. 3.15 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.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.1. Rupture disk is an example of Non-reclosing device. 3.DOc.1. rl. Overpressure is similar to accumulation when the relieving device is set at the maximum allowable working pressure of the vessel. 3. 3. KOC{t¡lP{t27 PARÎ 3.13 I Page I of 35 REV. . NO.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. Consequently. The overpressure is generally expressed as a percentage of set pressure or in pressure units.16 Non-reclosing Pressure Relief Device A pressure relief device. or hearing' 3. A vessel may not be operated above this pressure at any metal temperature other than that used in its design.1 . 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. 3.1 .1 .1.

3. For gases it is expressed in normal cubic meters per minute (NCM/rnin) or mtlmin or standard cubic feet per minute (SCFM). Koc-MP-027 PART'l 3. The value of the closing pressure is less than that of the set pressure and will be reached after the blowdown phase is completed. and for liquids ín litres per minute (L/min) or gallons per minute (GPM). A 3.1.21 Pressu'e-Relief Device (PRÐ) The Pressure Relief Device comprises of the Pressure Relief Valve. .e.1. liquids. spring-loaded valve. Rated capacity is generally expres::ed in kilograms per hour (kg/hr) or pounds per hour (lbslhr) for Vapours.1. and the Rupture Disk etc. Relief valves are normally used for incompressible fluids i.22 Pressu. Relief-valve. Examples of specific types of pressure-relief valve include Safety Valve. As the static inlet pressure overcomes the spring force. lt then closes preventing any further flow. Conventional Safety Relief Valve. and Pilot-operated Pressure-relief Valve. 3. 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.20 Page f0 of 35 REV. the Relief Valve. used to relieve excess pressure and /or vacuum that has developed in an atmospheric or low pressure storage tank. allowing flow of the liquid. the Safety Valve. '¡l rl. A relief valve begins to open when ihe static inlet pressure reaches set pressure. No.1.Ðoc. Balanced Safety ìelief Valve.1. 3.'e Vacuum Valve (PW) A weight loaded. A pressure-relief valve opens when its upstream pressure reaches the opening pressure. the disk begins to lift off the seat.he Safety Relief Valve. equ[pment and personnel by automatically opening at predetermined pressures and preventing the destructive consequences due to excess ve pressures. t. As such the PRD could be any of the above device intended to protect the pressure vessels.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. lt then allows the fluid to flow until its upstream pressure falls to the closing pressure.?3 Rated Capacity Rated :apacity is the percentage of rneasured flow at an authorized percent overpressure permitted by the applicable code.

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. 3 1. air or vapor etc.1. I RelievingConditions It indìcates the ìnlet pressure and the temperature of a pressure relief device during ån overpressure condition. ln liquid service. The difference between this "start to open pressu-re" and the set pressure is simrner. NO.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. and is generally expressed as a percentage of set Pressure. 3.1 30 Simmer Simmer is characterized by the audible passage of a gas or vapor across the seating surfaces just prior to "pop". KOC.1.29 Set Pressure Set pressure is the gauge pressure at the valve inlet. 3. The relieving pressure is equal to the valve set pressure (or rupture disk burst pressure) plus the overpressure. 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.MP.DOC. A safety relief valve is an automatic pressure-relieving device which may be used as either a safety or relief valve depending upon application.1. the set pressure is determined by the lnlet pressure at which the valve pops. for which the safety relief valve has been set to open under service conditions.25 I Page 1l of35 REV.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. This will cause the disk to lift and provide full opening at minimal overpressure. A safety valve is normally intended for compressible fluids such as gas.Oz? PART 3. ln gas or Vapour service. set pressure is determined by the inlet pressure at which the valve starts to disc'harge. q ü ll_ Þ r- nþ . 3.1. 3.

S. Repair. if requìred. Selection.0 4.Sizing and Selection Part ll.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. q"l * . Safety and Environment Health.57B Material Verification Program for New and Existing Alloy Pìping Systems rl. and lnstallation of Pressure Relieving Devices in Refineries: Part I . fi¡O.ANDARÐS.2 Lislof Standards and Cgdes The latest edition of the following standards. codes and specifications shall apply: 4.2.CODESANDSPECIFICATIONS Conflicts ln the event of a conflict between this Standard and the standards and codes or specifications referenced herein. Safety & Environment Management System lnspection and Test Plan Kuwait Oil Company (K.2 REV. and Alteratìon API RP 520 Part I and tl Sizing. Rating.ST.|' 3. 4. the sukject shall be brought to the attention of KOC Controlling Team for review. { Ahbrqviations HSE HSEMS ITP KOC MAWP MOP PIM PRD PRV PW 4. KOC-MP-027 PART .1 Pago 12 of35 Health. and resolution or amendment by Standards Team.1 National I lnternational Standards API Sto 510 Pressure Vessel lnspection Code-Maintenance lnspection. 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.C. consideration.DOC.

Requirements NACE MR 0175 / ìSO 15156 Part 1-3 Petroleum and Natural Gas lndustries. Koc-MP{2r PART t API Stc 2000 Pago f3 of 35 REì/. Materials for Use in H2S-Containing Environrnents in Oil and Gas Production Part 1: General Principles for Selection of Cracking-Resistant Materials .Ðoc.3 Process Piping ASME Ì]TC 25.5 Pipe Flanges and Flanged Fittings NPS % Through NPS 24 ASME i331.2. Vlll Division 1 Boiler and Pressure Vessel Code ASME 816.2 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. and the Use of Cast lrons .r Þ d.Part 3: CrackingResistant CRA (Corrosion-Resistant Alloys) and Other Alloys osHA 1910.I Venting Atmospheric and Low-Pressure Storage Tanks ASMË :3ec.Fundamentals and tsCI 9000 Quality Management Systerns Vocabulary tso 9031 Quality Management Systems . .219 4.Part 2: Cracking Resistant Carbon and Low Alloy Steefs. Ho.-009 KOC Standard for Spare Parts and Maintenance Data KOC-t-001 KOC Standard for lnstrumentation and Control System Design d .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 above. KOC Purchase order and specifications. then the most stringent shall govern. for the titles listed below: Title/Description a) b) General lnstruments Recommended Practice for lnspection and Testing of New Equipment 4.3 Document KOC Fire and Safety Regulations (Latest) PJqiect Speg!-ficatigns ln additlon to the KOC Standards and Recommended Practices referenced in clause 4.1 of this RP.lanufacturer's / Vendor's standards and specifications ENVIRO NMENTAL CONDITIONS The environmental conditions in Kuwait are severe.4 Order of Precedence 4. Data Sheets or Purchase Order requirements of specífic project.2 ln case further clarifications are required. materials.PART I KOC-M)-t27 Part 2 *oc.4.4. Qualification and Utilization of Third Party 381t02t01 lnspection Services KOC-H$E 4. No. Selection.1 5.1 The supply of equipment. environmental.2. in general the following sequence of precedence shall apply a) b) c) d) e) 5.0 5. Twinning.2 l(uwait Government's Rules and Regulations' KOC Project Data Sheets and drawings. Refer to'KOC Standard for Basic Design Data" (KOC-G-007). site and utility s. the KOC Controlling Teams shall designate other relevant specificatìons if required. which provides the basrc information requireC for deiign such as the ternperature.3 attention of KOC Controlling Team in accordance with clause 4. wind. Koc-MP{}z7 REV.4. and lnstallation KOC Recommended Practice for Selection.1 Pago 14 of 35 KOC Recommended Practice for Pressure Relief Devices: Sizing. the subject shall be brought to the 4. services and documentation shall be in accordernce with the State and local regulations. Should any conflict exist between the listed dr:cuments.rpply conditions prevailing throughout the Koc facilities. ''his KOC Standard (KOC-MP-027 Paft1)' |. 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 .

219 and BS PÐ 5304 shall be considered in the design. assembly or operation and maintenance of all equipments and accessories covered by this Standard. property. adjacent equipment.0 HEALTHT SAFETY AND ENVIRONMENT 6. I I rl' .2 The ManufacturerA/endor/Contractor shall comply with "KOC Fire and Safety Regulations" arìd 'KOC Health. manufacture. manufacture. Safety & Environment Management System (HSEMS)" requirements for the protection of KOC personnel. and the environment during the design.6. applicable safety requirements of Occupational Safety and Health Administration (OSHA) Standard 1910.1 All 6. ând assembly of the equipment covered by this Standard.

materials. 7.0 PRD: DESIGN BASIS AND TECHNICAL REQUIREMENTS 8.1 The KOC should indicate andior mark as applicable.SME Section Vlll Division 1 and this KOC Standard. u i and rements certification.: . manufacturing. 8.1 Spri ng -Loaded Pressu re Relief Valve : Req 8. No other type of pressure relief vaive including Pilot-Operated PRV shall be used on any pressure vessel.1. accesscries etc in the relevant KOC Data Sheet (Appendix-l).1. code symbol stamping.: * d. as described below. based on specific project requìrenents.ELIEF DEVICES 7.5 The sizing of the Pressure Relief Valve shall conform to the procedures and requirements as specified in API 520 Partl 8 1.0 PßP: IUNGTIONS AND WPES OF PRESÇURE F. . a) .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.. pressure equipment. in addìtion to the requirements as specified in ASME Sectio n Vlll Div. API 525.l- qìtL" t . equipments. and other requirements of Pressure Relief Valves shall be strictly in accordance with the applicable rules and requirements of the latest A.1 . service/process conditions. or pressure system. 8.1. . pressure setting. ASME PTC 25-2A01.2 The design. and API 527. 8.1. 8.3 For additional details and characteristics Appendix-4 of KOC-MP-027 Part2. marking. items such as type.2 The types of Pressure Relief Devices (PRD) are described as under. f 7. NO.6 The Manufacturer / Ven dor shall also abide by the following additional requirements for PRV. API 520 Part 1. rupture disks or a combination of the two devices.Oz7 PART Page 16 of 35 REV.3 The performance testing of the Pressure Relief Valves shall be in accordance with lat=st ASME PTC 25-200'1 Performance Test Codes. 8..4 The Pressure Relief Valve intended for pressure vessels. KOC.1. or pressurized systems shall be Direct Sprìng-Loaded Type.f DOC. the overpressure relief can be achieved with a variety of mechanisms which include pressure relief valves.MP.1 ln all pressurized systems.

B.1 .1 .17mm (1/B in. and the standard orifice area of the PRV RP accordance the be selected from Table in API 526.17 The manufacturing tolerances of spring loaded PRV with ínlet size 4 inches and below shall be wjthin t'1.) 8. effective orifice area of PRV shall be determined in with API 520 Part 1.1.027 PART I Page l7 of 35 REV. 8.) Flanged{ype PRV of size smaller than specified above and without ASMË certification or A$ME code stamp may be allowed if essential.1.1 .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. 8.'1.13 The minimum required B.5.) Cutlet flange size 50 mm (2 in.9 The flanged-type Pressure Relief Valve shall be in accordance with API 526 B.1 . Koc-MP.1. and for inlet size over4 inches shall be t 3.18 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 .5Bmm (1/16 in.7 All Pressure Relief Valves (threaded or flanged) shall be starnped with ASME Code "JV'Stamp.1 .1.) Outlet size 20 mm (3/4 ìn. No.14 The PRV inlet and outlet flanges type and ratings shall comply with the applicable requirements of KOC Piping Material Classes.12 nlet flange size 25mm (1 in.). and only for certain select installations. f 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. provided its requirement is reviewed and approved in writir.).oCIc. 8.8 The mirimum size of the threaded Pressure Relief Valve shall not be less than as given below: a) b) lnlet size 15 mm (1l2in.1" . B. shall 8.1.16 The centre{o-face dimensions of the PRV shall be in accordance with Tables 2 to Table-15 of API 526.10 The inlet and outlet flanges facing and dimensions shall be in accordance with ASMË B 16.1. 8.g by KOC.1 1 The minimum slzes of the flanged Pressure Relief Valve shall not be less than as follows: a) b) 8.

29 For the Pressure-Level Relationship of the Pressure Relief Valve refer to Figure-1 of Appendix-2 of this Standard. 8. steam. 8. steam.27 The test medium for determining the seat tightness i. 8. his authorized representative. or water shall be the sarne as the primary relieving medium. 1. 8.Doc. 8.25 ln case KOC requires seat tightness greater than that specified in API RP 527. the test medìum such as air. 8.1 .27 PART I Page l8 of 35 REV. the capacity of such a combination shall be establisihed in accordance with ASME Section Vlll Div. r. B.1.20 The initial adjustment of the pressure relief valve shall be done only by the Manufacturer or his authorized representative.1. defined for pressure relief valves with set pressure from 103 kPa gauge (15 psig) to 41. a free vent.21 Ïhe sei pressure tolerances.1 .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 0.1. 8.1 . l 8.1.1.¡o.24 The seat tightness of pressure relief valve shall be checked and carried out in accordance with the requirements of API RP 527.19 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.23 The space between a rupture disk device and a pressure relief valve shall be provided with a pressure gage.8 kPa (2 psi) for pressures up to and including 483 kPa (70 psí) and 3% for pressures above 483 kPa (70 psi). it shou:d be specified ìn the KOC Data Sheet (Appendix-1).1.1.1. 8. or an Assembler and a data tag shall be provided on the valve that shall clearly indicate the set pressure capacity and date.1 . air.379 kPa gauge (600û psig). of pressure relief valves shall not exceed 13. 8.28 For dual service valves. or water shall br: the same as that used for determining the set pressure of the valve. or the Assembler who performed the adjustment. B.90 of the rated relleving capacity of the valve alone or alternatively.1 . or suitable telltale indicator in such a way that it shail permits detection of disk rupture or the leakage.31 The flanged type PRV with flanges attached by welding shall not be acceptable & . Koc-MP4.26 The maximum acceptable leakage rates through seat of a PRV shall be in accordance with Table-l of API RP 527. plus or minus. a trycock. unless the setting is within the spring design range established by the valve Manufacturer. The valve shall be seated with a seal identifying the Manufacturer.30 The flanged type PRV shall have integralone-piece nozzle 8.e.

8.2.2 However it may be used only iñ combination with a PRV under certain conditions as mentioned below provided its use is absolutely.4 The KOC should indicate and mark as applicable. 8.1 The rupture disk alone shall not be used on any pressure vessel. genuinely.7 For the Pressure-Level Relationship of the Rupture Disk refer to Figure-2 of Appen.DOC. items such as type. manufacturing.33 Lifting levers shall be provided only on PRV intended for Air. pressure equipment. f shrinkage. and other requirements of Rupture Disk. strains scales. sandholes and other defects etc. or pressure systems. shall be free from REV. d' .2.2 Rupture Disk: Bqq!¡iremenÞ 8.34 No lifling levers shall be provided on PRV intended for process operations/service.3 The design. Vlll Div.2. 8. 8.¡O. 8. marking.2.32 All castings for PRV shall be true to form. materierls. lumps. or Nitrogen service. f.1.Jix-2 of this Standard. based on specific project requirements. 825 The Manufacturer shall ensure that each Rupture Disk has been duly marked with "UD" Code Stamp as per ASME Sec. accessories etc in the relevant KOC Data Sheet (Appendix-1).1.1. shall be strictly in accordance with the applicable rules and requirements of the latest ASME SectiorrVlll Division 1 and this KOC Standard.1 .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.2. and specifir. service and/or process conditions. or d) When very rapid pressure rise are anticipated or encountered 8. voids. or c) Where contamination of the atmosphere by leakage of noxious fluids rrust be avoided. 1(OC-MP-027 PART I Pags l$ of 35: 8. certification. code symbol stamping.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.2. 8. or b) 'fühere a loss of valuable material by leakage should be avoided. when specified. 8.

3 lt of a bellows type PRV when installed. c) lf the service fluid is highly viscous or of a nature that it can enter the critical clearances behveen the guides/disc holder. either constant or variable is certainly present c) lt must be ensured that when balanced bellows type PRV with auxiliary billancing piston is installed. b) Fr:uling or corrosive service conditions are not expected as it may affect the upper part of the PRV.tloc.3 PRV: Criteria and.Pasis of Selection 8 3. 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.2.3. No. Bellows Type ln case the conditions specified in Clause 8.Í.e .3. 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.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. a perilous condition could occur any moment. 1 The conventional PRV shall be used when all of the following conditions are met: 8. their bonnets are appropriately vented to the atmösphere.1 (a) and (b) are not met.1 PRV: Conventional Type REV. * . shall be appropriately vented to the atmosphere. d) 8. QT )> ü. PRV. 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. b) Fouling or corrosive conditions are anticipated and protection cannot be afforded by using alternative materials or devices. Koc-MP-027 PART I Page 20 of 35 8.

the PW shall never fail to protect the tank on which it is installed. RF. addition to several provisions for emergency venting. and the class shall be as per the KOC Piping Material Classes. minimum ratings.MF-027 PART.4. KOC. a frangible roof{o-shell attachment.ydrocarbons (sweet tanks or sour) irrespective of size and .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.4.4. is most imperative.r Atmospheric and Low Press. ln 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.4.8 pressure storage tanks in which petroleum or petroleum products are stored.4 PRD: F VV fo. or a gauge hatch that permits the cover to lift under abnormal internat pressure. as specified in API 650. 8. NO. 8. the internal pressure of each tank under any normal Operating condition shall not exceed the internal design pressure or the maxirnum design pressure.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. 2000.4.ge_Tanks 841 The Pressure Relief Devices for atmospheric and low pressure tanks shall be designed and manufactured in accordance with API Std.4 The PW intended to be installed on atmospheric and low pressure tanks shall be flanged type.4.7 The PW shall be designed such that in the event of failure of any of its essent'al parts. 8. ASME B 16.4. 8. such as use of additional PW. storing h.I Fage 2f of35 RËv.4. The Relief devices equipped with a weight and lever arrangement shall not be L¡sed.1' 8.4. 8.9 8.3 The P\A/ intended use on atmospheric and low pressure tanks for pressure and var:uurn release shall be spring-loaded type.4.12 Twin frW shall be installed on all atmospheric and low pressure intended for pressure.10 The tVlanufacturer / Contractor shall ensure that the requirements for a frangible rooËto-shell attachment.5 The type.ure Stora. 8.5. 150 # ratings. are strictly followed and met.DOC. unless otherwise specified by KOC. as described in API Standard 650.4. 8. PW valves specified here shall be used on atmospheric and low 8. and class of the inlet loutlet flanges of the springloaded flanged type PW intended for atmospheric and low pressure storage tanks shall be.

lsolation Valves.4. NO. wherein the liquid is fully blocked or stranded.5 PR?:. c) 3n the piping in the heat exchanger in which the liquid is blocked and reated between the block valves.ïhgrmal Relief Vglves 8.1 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.5.5 2 This shall not cover the expansion of liquids in the piping or pipelines due to fire contingencies.4.13 T Page 22 of 35 REV. KOC.5.4"t4 The isolation valves installed with pressure vacuum valves shall be butterfly type. d) 8. b) On each section of above grade plant piping carrying liquid which is blocked-in or stranded by tight closing valves and blinds. resulting in the rise of internal pressure that may exceed the maximum allowable operating pressure. 8.DOC.16 For additional details showing installation of Twin PRV.4 The thermal relief valve shall be instalìed in the following conditions.5. conventional of the section divided by '¡¡edge gate valves exceeds the liquid volume 60 meter.MP{'27 PART 8. 8. in which the liquid is stranded and heated between the block valves.1 The inlert of a PW shall be fitted with butterfly type isolation valves and carseal. when the above ground length of pipe exceeds 1to/o ol the total length of that section.5 On that section of piping which lies between the storage tanks. unless the :. 8. flange ratings. unless otherwise required by KOC: a) On each section of the cross-country pipelines between main line l:lock-valves.1 The thermal relief valve shall be installed on all such sections of the pipeline carryinç¡ liquid hydrocarbons. 8. and full-bore. and stress. 8. refer to Figure-10. and is subjected expansion due to rise in environment. Figure-13.um of the cross-sectional flow area of non-blinded . considering p any other weakest co sy r-1" . co shut irr. 8. The seit Pressure of the thermal relief valve shall not exceed 110% of the maximum allowable oSerating pressure for the maximum temPerature during stress. or in the tank farm.4. Figure-11. and Figure-16 of Appendix-5 of KOC-Mr-027 Parl2. 8. Figure-12.5.3 This shall not cover insulated or buried piping/pipelines which normally operate at above the ambient temperature.

r¡. 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.'l¡e .xrcif*r/ this dc¡cu:nent.since tltet.se the isolulit¡tt hloe'k t'alvc. 8. KOC4'1P.5 The isolation block valves used for the pressure relief valves shall be full-bore roddable type. 8. NO. and parameters.s The outlet of thermal relief valve installed on the pipelines. 8.y ure '|.ation of the thermal relief valve on sections of cross country pipeline shall be selected by KOC based on accessibility.r.6. valve safety.r. unless physically cut by a wire cutter or by forceful hammering.6. 8.tnl . which releases hydrocarbons or other liquids/vapors shall discharge at the grade or as required by KOC. 8. in tu.8 The isolation valves Classes to KOC Pi er Þ * þ .: 'l'|rc: i.2 ln case the block valves are not available.6.t.tlvst and lha cur-scul.1 The block valves shall be used as isolation valves in combination with PRV to facilitate in PRV maintenance. l The lor.Vla*¡liactttrar / helot'. the system and the plant.6 I REV.6. size 8. replacement.s¿d to uhitle þ)' t]rc tecl¡tt¡cul ret¡uírenents as .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. constitutc en essantial gjelr?enl ú PRÐ asscgr${t.5. tlto¡tgh no! <t nrumleilot1' ¡rurt eJ ìilp()rt. 8.6 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. 8. or other purposes. 8.6 lsolation Block Valves and Car-Seals: Reouirements I*lFOR7'.5.3 The isolation block valves shall be provided with appropriate Car-Seal Open facility.5. httt'.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.10 The therrmal relief valve shall not be less than 3/oin. KOC'.6. then as an alternative.7 The thermal relief valves which are not located within a fenced area shall be provided with suitable cover to prevent tampering or damage.lNT NO'lþ. Ilcndet is tltt:rcfiva ¡r¿1t. 8.DOC.'cvar thc.. 8.sottitiot¡ ltlock :'.027 PART 8 5.s aud <:ar-scals ara ortlerccl h).6 The isolation valves shall be carefully administratively controlled to achieve maximum safety of the equiprnent.5.6. 8.

whichever is more stringer t.) and it shall also conform to the KOC Piping Material Classes. 9. However if they are ditferent.he NACE MR0175llSO 15156 requirements br otherwise as specified in KOC Data Sheet.'1 KOC should consider the project specific requirements when specifying the materia¡s for PRV in KOC Data Sheet (Appendix-1).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. 9. 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. 9. 9. brackish water. 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. and it shall be suitable for the service conditions and shall also satisfy'. rþ .MP.0 PRD: MATEFIAL REQUIREMENTS 9. then each of them must meet the minimum pressuretemperature requirements of the system. as well as conform to the requirements of KOC Piping Material Classes. as well as Koc Piping Material Classes. KOC.35 REV. shall be equivalent to or better than the types and grades as sper:ified in API 526.DOC. it should preferably be nickel-based alloy such as lnconel X750 or equivalent or better or alloy UNS N07750 or N 07090. effluent water etc.6 The body and bonnet materials of the PRV shall be same. 9.Oz? PART 1 Page 24 of. if not specified in KOC Data Sheet (Appendix-1).5 When the pressure relief valve incorporates bellows and it is to be used in sour service. 9. NO. if not specified in KOC Data Sheet (Appendix-1).8 The Manufacturer / Vendor shall ensure that the PRV trim materials. hydrocarbons (Liquid / Gas: sweet or sour) or water (produced water.e. However the Manufacturer / Vendor shall also ensure that the¡se materials satisfy the NACE MRO175 / ISO 15156 requirements for sour serrvice. oq The spring material of the PRV shall be. the minimum material requirement for bellows shall be Nickel based irlloys {such as lnconel 625 (UNS N06625).7 The mirimurn body and bonnet materials of PRV. shall conform to the requirements oi ruRCe MR0175 / ISO 15156 for sour service.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. l 9. or Hastelloy C-276 (UNS N10276)). if not specified in KOC Data Sheet (Appendix-i).

'11.2 llUarrang¿ The Vendor I Manufacturer shall provide a Warranty against all Pressure Relief Devices.DOC.tion and . 11. Material test certificates shall also be submitted to KOC for review and approval before start of manufacture and or assembly of PRD.000 psl). 10. 11"0 INSPËCTION AND TESTING 11.2 The Manufacturer / Vendor shall submit to KOC. NO.þ ¿. The ferrous materials components of PRV when used in sour service.2.1 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). The coating shall be suitable and compatible with the service fluid and the operating conditions.O GUARANTEE & WARRANTY 10.MP-027 PART 9.2. and associated component in accordance with the purchase order or contract documents.3 The testing of PRD materials shall be carried out by the Manufacturer or by an accredited testing laboratory approved by KOC- ¡.2 lVlaterial lnspec. design and workmanship. the duly filled out KOC Data Sheets for PRD for review and approval. shall have the Yield Strength not exceeding 620 MPa (90.10 9.9e4ification 11.2.1 Guarantee All Pre3sure Relief Valves and their component and parts shall be guaranteed by the Vendor / Manufacturer against defective materials.-] d * .1 General The Vendor shall carry out all the KOC requirements of inspection and testing as specifìed in Contract document or Purchase order. KOC.!- . 1O. f The PRV springs for additional protection against corrosion shall be coated if reguirecl by KOC. and the hardness not exceeding 22 HRC.1 1 I Page 25 of 35 REV. par1s. 11.

4 9ualiïy Plan 11. þ . KOC. 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. NO.MP4?T PART 1 Page 26 of 35 REV. and reviewing (R) in the ptan' The approved quality plan shall be strictly adhered to throughout the entire fabrication. assembly. made of ferrous or non-ferrous alloys. inspection. . and confirm the requirements for witnessing (W)' surveillance (S). 1 1.4 Positive Material [dentification (PMI) (wherever applicable) of pressure comporents such as body and bonnets. 11.| 11. inspection and testing and packing for shipment in a chronological order. inspection and testing of all pieces and parts of equipment and supplíes covered by this Standard.3.3 Shop lnspection 11. 11. 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. if deemed necessary. monitoring (M). KOC will decide if KOC inspector will be present at all times when work is in progress.3.1 The equipment vendor shall prepare and submit a detailed quality plan for KOC approval.3. and testing period.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).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.NOC. to witness the inspection and testing cf materials and the equipment 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. as well as the trim parts.4.3.3. KOC may additionally employ the services of inspectors. assembly. 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. The plan shall include fabrication. 11. assembly. or purchase documents. 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. showing the frequency of control. the acceptance limits.

1 The Manufacturer / Vendor shall ensure that the all Pressure Relief Devices supplieC shali meet or exceed the performance requirements as specified in ASME .rTC-25-2001 (Performance Test Codes).3 The Manufacturer shall fully ensure that the supplied PRD conforms to the requirements of this KOC Standard. markíng.5.3 The Manufacturer / Vendor shall abide by the requirements of ASME Section Vlll Div. 13.5. I 11.0 Q-UALITY ASSURANCE The Manufacturerfuendor shall operate quality systems to ensure that the requirements of this Standard are achieved.tabilitv 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. 13. 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.2 Each and every PRD supplied shall satisfy the set pressure and seat tightness. and other requirements as specified ín KOC Data Sheet (s). 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 .1 for markings on PRV and Rupture Disks. Further all other markinç¡s on PRV shall be as per the requirements of UG-129 of ASMË Sec. 11. Markìng and Documentation" (KOC-G-004i 13.0 PACKING. 12. As a minimum requirement the following shall be marked on the PRV. and shipping documentation shall comply with the requirements of KOC Standard for "Packing. Vlll Div. 13. and are fit for the purpose.5 Acqep. therefore.1. not detailed in this Standard. KOC-MP{z? PART I Page 27 of 35 REV. 11. Verification of Manufacturer's / Vendor's quality system is normally part of the pre-qualification procedure and is.DOC.5. NO. MARKING AND DOCUMENTATION Packing.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. the codes and standards referenced C [it"eria herein.

1. calculation or any other written information shall be in English language. and AutoCAD).DOC. one language shall be English. for the equipment and materials supplied in accordance with this Standard. Excel.0 SPARE PARTS & M. KOC.2 The ManufacturerA/endor shall subrnit to KOC for review and approval the Manufacturer's Record Book (MRB) wìth all the test certificates.0 pocuMENTATlol¡{ 14.2.3 ln addition to hard copies. 14.O27 PART I Page 28 of 35 REV. NO. 14.AINTENANCE ÐATA The Packager shall comply with the requirements of "KOC Standard for Spare Parts ard Maintenance Data" (KOC-G-009).1. f 14. all final documents such as specifications. instructions.MP. and materials as covered by this Standard shall be submitted to KOC for review and approval before packing and shipment. and drawings shall be provided in approved electronic software forrnats {Latest versions of Microsoft Word. and equipment Data Sheets (with blanks filled out). 14.2. appurtenances.1 Generql 14. drawings. unless othenvise specified. physical constants etc. shall be in Sl units. Data Sheets. Calcula:ions shall be submìtted ìn widely used software forms agreed upon by KOC.1 .0 APPENDIçES 11" . 16.2 DeliverFbles 14.1 All correspondence.2 All dimensions. 14. In case of dual languages. (Pipe sizes shall be shown in inches).1 Test Certificates and "as-built" drawings and Data Sheets of equipment and its parts. Data Sheets. units of measurement. 15.

Bonnct: ìl 2 Sêåt {ñ¡o¡zle}: Rê3¡liañr SÊåt: õrr¡¿tê: 7 2 AdIUsl}nE R¡ßq{E}: SEfinq. ì I LifiìngLev. 45.P PRESSURE RELIFF VALVE (For Additional details Kuwait Oil Company refer to API 520 Part l) fåge sh€et ¡{o.âPl 526: Flref lOtherf l9oecitu: 4  Ësotur€ D. 8pll0w6' ¿ Sålanced Pirtrn: Carr!filv NÂCE MR Ol 7ç. 51. I Ø APPET. U *rrtç: nitç: 5¿. I 2 29. 40.¡6 A¡¡D SÉLECTION Frerçure 44 45./lqol '21 7Ì 4 godv: t8. 1ó ì t1 COI'¿NËCTIOì¡5. R€quÍsjtion No.SP.RII.Èr: Pl¡lnI lFåctèdf l¡]oneI I Trçt Íì. / 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 (*). 47 NOTE: KOC ta mark 51.IG LOAD. Requlred Cape{lIT per Valve and Unitgr lb/hr o_ oûèràrlnô Fressure and Units: a. tth€r I ttçk1 \'Taiher: q 156: YÊç f xl þlù t Ì I soe(itu:' 5 9[. 39.Ðoc.E. 17. 24.RVrCE Âc€EftoRlEs COÍqÐÍrO¡¡t C¿o: SirevT€dl lEÕltedf 3{.rildp: YÉ! I I Nr f I Scrsen: Iì ltlo !t ßus 3 O¡her 4. Celfril ¡t*¡'l ('lri flrÉ ÂrÈâr qêlê{îed Eft¿¿tivê ôrifire Ar O.TpTX-1 DATA SHEET: . 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. Koc-!tP-027 PART f Page 29 of 35 REV. f-¡o. 5.rh: VAIVC DEIICN Yes f l' Yrsl I II No Not I ¡'lol I f I MATERIÂL5. 4 l/ Þ r ¿J .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.

hTP{27 PART REV.OPERATED PRESSURE RELIÊF VALVE SPECIFICATION SHEET Job No Date ì€.sIGÈ¡ L OsiqlrÎypG. t I 14 Sed T19e: [¡t¡]s¡. FieH Teet Csì¡ì€€rion: Ye€ ay 45 €t.¡c I ¡ Þlun{:er ol Filot¡: ¡¡onr¡ceiltng Yee MATERIALS. MÀIN VALVE 10 II INo OlhÈr VALVE OE. lCar¡fu v. Sêå SÈ* ?cì 3ó..I DOC.. ûlhsrllSoeol¡¡ ACCESSORJE9 s€RvtcÈ coNDlTlol¡s 43 35 Rurd efid SlålÊ: '. PILOT. lntarn¡I¡: l 2t.*t AFI 5f.f V"F.8: I lRr$0¡reDj¡lc YÊs tI II olaphragm BdrcÅ¡vt f 21. lTed Ga€s: Ye3 Srônd'rd t I O{þr t I .b Jp€r"@Ptaeture ãn¿ t l¡vts: Þrsassrs ¡nd t-b}it& aiffi¡ru EO Lorent tteat 51 Op€r¿ling 41.{t"itelã.o.¡EcTlol'¡3 l4 Rüts r*et $i¡ç: ñtrf-- Focr€É Rtrç Fæi. [ | Re*lhrtt [ ] t5.r*' 32. Ê:ttÍ Li¡erÊüiia: I I Åcnrft Fæ I tr l. P¡ld{Vent A¡nrolFfwre f. PILOT 26.rì*co*ity el Fkrfft¡g tåmp€. fficeA€a 61 Ulìtl$: 57 NOTE: KOC to tTtark/ indicate items by the Møn an Asterisk (') rþ . KOG.ERATE D PRESS (For Add¡tianal detaits refer rc API 520 Part l) DATA URE RE LIE F VALYE Kuwait Qil Company No. ffi¡Gen*¡t fe* P¡stsure ¡nd|Jnrb: 56 qlt*¡rahtã Overpo. Sê{tl\|ÊøB} Fc¡sr ?2. bne.rrirsd lv BASIS OF SELËCTIS}I GEI¿ËRAL vn tsm NurY¡b€r: ') 4 Í¡g ttlt¡¡l¡er: ô S¿nrco.. à.n!t-up B*ek Pres¡re ârld Uürts: r¡pe$m*e¡s8d 8.1 Page 30 of 35 Ø APPENDIX-1 S HEET : PI LOT-OP.¿cl Pree*¡ro and Unit¡l 64 NÔ 37.t€dr¡¡ùt¡g t I Senss lnlrnal I I RênÌd. SÊ¡rTlqhù'aûf AFr527 t I t I Outlôl't r6. Spnng: 33 16 4. BodvlBonnet: ?7. îuUngJñTþ'¡q!: co?{1. Re¡ÞÍSd 3e*: 11 Prbl Typa: Fk:$rrg t) Filol 23 I3 Prlol 24. ¿8 ít{ Pacftâd I¡¡¡ns ?o Te€¡ l¡tdacãlq: Yea I r.aturo ¡nd Units.ts*¡e iJì P€rc€nt d 59. ot EcËr¡Þnrer¡t þlr¡ntl¡en Nurrôer Rsquked. Fiher Yet 36 4. NO.1 55. Pi*bn I I Ye¡ hston Seal: MÁTERIALS.retjú¡ ad Unís: Tenïer*u¡s sr¡d II I\¡o I Ur!þ: st¿¡NG A¡¡Ð SELECTIOII efid 53. 47 5?.

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

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

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

| ACKNOTìILEDGEMENT This KOC Starrdard has been approved by the Standards Technical Committee (STC) consisting of the following. Team (S&E) Standards Team Opns. (N & WK) q IL rp . S. Ali Hassan Al-Failakawi HSES ïeam lnsp. Svcs OPE TIONS GROUP IWK) EXPORT & MARINE OPNS. Tech. Tech. & Corr.GR9LF. AJRedha Al-Haddad Mr. Khalaf Harnada Major Projects-EFP Team Mr. & Corr. No. Svcs Team Leader Drilling Services OPE. & Corr. Svcs. 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.MP-027 PART I Page 34 of 35 REV" . Moataz Khalaf Mr. Tech. Amina Raiab Design Team Mr. Standards ïeam lnsp. Team (SK) Design Team Mrs. Ramanathan Gen. Team (N&W) Dr.RATIONS GROUP {NK) DrvrDED ?ONE GROUP Team LeaderOpns. Mohammad Emam Mr. Team Leader Project Design Team Leader Utilities Team Leader Safety Team Leader HSE Systems TIONS GROUP ISKI Team LeaderOpns. Khalid Al-A.hmad Utilities ïeam Mr. Projects Team Mr. N. Modistaba Araghi Project Mgmt. Abdut Aziz Akbar lnformation System ïeam Mr. GROUP Team Leader Export Services DRIILING OPERATIONS GROUP Team Leader Opns. Daniel Pino Mr. Ëngg. & Facilities INNITSTFIIÄI SERV¡CES GROUP Team Leader lnsP. Kumar Mr. Team (NK) Mr. Tech. Svcs Team Leader Proj. Koc.Ðoc.

Yousef M. (WK) TF Leader & Author Member Member Member Member Member Ex: 61 371 Ex: 66975 Ex:61815 Ex'. Rev. Zaman Mr.This KOC Standard for Pressure Relief Devices: Design and Materials" {KOC-MP027 PART 2.1) has been prepared by the Task Force (TF-MPI07) comprising of the following: Mr. (SK) Opns. Svcs. Mohammed Al-Ajmi Standards Team Major Projects Team Design Team Opns. Svcs. Nawaf Al-Shehab Mr. {NK) Opns.22241 Ex'. Tech. Svcs. Miza Mohsirr Mr. Adnan Bohammed Mr. Tech. Raj Maharaj Mr.23437 Ex: 20336 R il . Tech.