KOC-MP-027 part 1

7/25/2019 KOC-MP-027 part 1

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KOC

STANDARD

FOR

PRESSURE

RELIEF

DEVICES:

DESIGN

AND

MATERIALS

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No. Koc-MP-tz7

PART

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STANDARDS

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ilO.

KOC- iJIP-027 PART I

TAFLE

OF CONTENTS

FOREWORD

1.0

SCOPE

2.0 APPLICATION

3.0

TERMINOLCIGY

3.1

lfefinitions

3.2 Abbreviations

4.0

5.0

6.0

7.0

8.0

9.0

10.0

1f.0

Paqe

No.

5

b

6

12

12

12

14

14

25

25

25

7

7

12

ENVIRONMENTAL

CONDIT¡ONS

14

HEALTH, SAFETY AND

ENVIRONMENT

15

PRD: FIJNCTIONS

AND

TYPES

oF

PRËSSURE

REL¡EF

DEVICES

l6

PRD:

DESIGN

BASIS AND TECHNICAL

REQUIREMENTS

f

6

8.1

Spring-Loaded

Pressure

Relief

Valve:

Requirements

l6

8,2 Rupture

Disk:

Requirements

19

8.3

PRV:

Griteria

and Basis

of

Selection 20

8.4

PRD: PW

for Atmospheric

and

Low

pressure

Storage

Tanks

21

8.5 PRD:

Thermal

Relief

Valves

22

8.6

lsolation

Block Valves and

Car-Seals:

Requirements

23

PRD: MATERIAL

REQUIREMENTS

24

REFERENCE

STANDARDS,

CODES

AND

SPECIFICATTONS

4.1

Conflicts

4.2

List of

Standards

and

Codes

4.3

Project

Specifications

4.4 Order

of

Precedence

GUARANTEE

& WARRANTY

10.1

Guarantee

10.2

Warranty

INSPECTION

AND TESTING

11.1

General

11.2

Material

Inspection

and

Certification

1't.3

Shop

lnspection

11.4

tluality

Plan

ll.5

AcceptabilityCriteria

25

25

25

26

26

27

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KOC-MP.{}27

PART

I

12.0

13.0

14.0

15.0

f

6.0

QUALITY

ASSURANCE

PACKING,

MARKING

AND

DOCUMENTATION

DOCUMENTATION

14.1

General

'14.2

Ðeliverables

SPARE PARTS

&

MAINTENANGE

DATA

APPENDICES

AFPF y_plx-1

DATA SHEET: SPRING

LOADED

PRESSURE

RELIEF

VALVE

ÐATA

sHEET: PILOT-OPERATEÞ PRESSURE RELIEF

VALVE

DATA

SHEET:

RUPTURE

DISK

DEVICE

APPENDIX.2

FIGURE-1:

THE

PRESSURE-LEVEL RELATIONSHIP

FoR

PRV

FIGURE'2:

THE

PRESSURE-LEVEL

RELATIONSHIP

FoR

RUPTURE-DISK

ACKNOWLEDGEMENT

27

27

28

28

28

28

29-33

29

30

3l

32

33

34

ú

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OC.

ilO. KOC-MP.027 PART I

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,

and

materials

of

Pressure

Relief

Devices

to be

installed on

pressure

vessels,

pressure

equipments,

pressurized

systems, atmospheric

and

low

pressure

storage

tanks, and

pipelines/piping

throughout KOC

facilities

and

installations.

This Standard

has

been

approved by

the

Standards

ïeam,

in consultation

with the

Standards

Technical Committee

(STC)

for

use

and application

throughout

the corporate

engineering

and

operationaf

functions

of

Kuwait

OilCompany.

This Standard

sets out

to achieve

the

following objectives:

>

To

specify

the

minimum

technical

requirements

for

design, and

material

selection

of Pressure Relief

Devìces

that

have applicability ìn

KOC installations and

facilities

with a view

to

achieve

quality,

reliability,

efficiency

and

performance,

as

well

as

cost

effecti'¡e a

pproach.

requirements

of Pressure

Relief Devices

so as to minimize

the

need for technical

clarifications

and

disputes.

personnel

and

environment

as

established

by

KOC Fire and Safety

Regulation,

Health, Safety

and

Environment

Managernent

System

(HSEMS)

and the

HSE

Policy.

Feedback,

comments

or suggestions,

derived from the

applicatìon

of

this

Standard

at

any

stage

of

design,

material

selection,

purchase.

manufacture,

field installation,

operation,

and maintenance

are encouraged,

and

should

be

directed to:

The

Team

Leader Standards

(Chairman,

Standards

Technical

Committee)

lndustrial

Services

Group,

KOC

P. O.

Box 9758,

Ahmad¡ 61008,

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.

(TF-MP/07)

consisting

of

the

following:

Mr,

Mirza

Mohsin

Mr. Raj

Maharaj

Mr.

Adnan

Bohammed

Mr.

Yousef

M.

Zaman

Mr.

Nawaf

Al-Shehab

Mr.

Mohammed

Al-Ajmi

Standards

Team

Major

Projects

Team

Design

Team

Opns.

Tech.

Svcs.

(SK)

Opns.

Tech. Svcs.

(NK)

Opns.

Tech, Svcs,

(WK)

TF Leader

& Author

Member

Member

Member

Member

Ex: 61371

Ex:

66975

Ex:61815

Ex'.22241

Ex

23437

Ëx:

20336

r+

M

7/25/2019 KOC-MP-027 part 1


This

standard

specifÍes

the

minimum

technical

requirements

for

Design

and

Materials

of

Pressure

Relief

Devices

intended

to be

installed

on

pressure

vessels,

pressure

equipments,

pressure

systems, atmospheric

and

low

pressure

storage

tanks,

and

pipelines

I

plant

piping

with

stranded

liquids,

in

KOC

onshore

facilities

and

installations.

Any

project

specÍfic requirement

shall

be

further elaborated

and

described

in

detail

in

KOC

Data

Sheet

(Appendix-1)

and/or

Purchase

Document.

2.0

APPLTCAIION

2.1

The

Pressure

Relief

Devices

(Pressure

Relief

Valve,

and

Rupture

disk)

covered

in

this

Standard

are

intended

for unfired

pressure

vessels

(except

steam boilers),

pressure

equiprnent,

and

pressure

systems

whose

operating

pressure

is

103.4

kPa (15

psig)

or

greater.

1.0 scoPE

1,1

1.2

2.?

2.3

2.4

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

103,4

kPa

(15

psig).

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.

The

PRD covered

in this

Standard

are

intended

to

protect unfired

pressure

vessels,

equìpments

and

pressure

systems

including

atmospheric

and low

pressure

storage

tanks

against

overpressure during

normal

operating

and

emergency conditions

such

as fire

contingencies.

2.5

The

PRD

covered

in

this

Standard

are not intended

to

protect pressure

vessels,

pressure

equipments,

pressurized

systems,

and atmospheric

and low

pressure

storage

tanks,

and

piping

from

structural damage

or

mechanical

failure

rvhen such items

are

exposed

to

extremely high

temperatures

such

as

during a

fire.

2.6

This

Standard

does not

cover the

U-type blow

out

wet

[egs,

the surface-safety-

valve,

the

subsurface-safety-valve and the pressure relief devices installed

on

drilling

rigs

and its

associated

equipment and

vessels

etc.

2.7

This

Standard

does

not

cover thermal

relief

valve

of less

lhan

To

in.

size

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

roads.

(/*

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PART

f

3.0

TERMINOLOGJ

3.1

Def,nillons

For

the

purpose

of

this

Standard

the

following

definitions

shall

apply.

However

for

additionaldetails

refer

to APt

520 and

API 576:

3.1.1

Accumulation

Accumulation

is

the

pressure

increase over

the maximum

allowable

working

pressure

of the vessel during

discharge through

the

pressure

relief

valve,

expressed

as

a

percentage

of

that

pressure,

or actual

pressure

units.

3,1.2

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.

Superimposed

back

pressure

is the static

pressure

in the

discharge

header

before

the

safety

relief

valve

opens.

b)

ConstantSuperimposedBackpressure

This

type

of

back

pressure

remains

essentially

at

a

fixed

value

(constant)

and exists

(superimposed) continuously

prior

to

and during

opening of

the valve.

c)

\/ariable

Supqrimposed

Backpressure

Ihis type of back

pressure

varies

or

changes over

a range

from

a

minimum

to

a maximum,

or

vice versa,

The

actual

back

pressure

at

any

specific time depends

on

conditions

in the

píping

system

to

which

the

outlet

of

the

valve

ís

connected,

3.1.3

Blowdown

Blowdown

is

the

difference between

set

pressure

and

reseating

(closing)

pressure

of

a

pressure

relief

valve,

expressed

as

a

percentage

of

the

set

pressure,

or in

actual

pressure

units.

3.1.4

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, after the

pressure

relief

valve has

opened.

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3.1.5

Car

Seal

A

self-locking

seal

intended

for

sealing

or

locking

the isolation

block

valves

installeC

with

pressure

relief

valves

assembly. When

Car-Seal

is

placed

in

position

and

closed,

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.

3.1.6

Closing Pressure

The closing

pressure

is

the

point

at which the

pressure

relief

valve

recloses.

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,

as

determined

by seeing, feeling

or hearing.

3.1.7

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.

This

pressure

includes

the

corrections for

back

pressure

and/or temperature and

service conditions.

3.1.8

Conventional

Safety Relief Valve

A

conventional

safety

relief valve

is a

direct

spring

loaded

pressure

relief

valve

whose

operational

characteristics

i.e.

opening

pressure,

closing

pressure,

and

relieving

capacÌty

are directly

affected

by changes

in

the

back

pressure.

3.1

.9

Flutter

Flutter

is the

abnormal,

rapid

reciprocating

motion

of the movable

parts

in

which

the

disc

does

not fully sit

on the seat

of

a

valve.

3.1

.10

Leak-Test

Pressure

It

is the specified

inlet

static

pressure

at

which the seat-leak

test is

performed

3.1.11

Lift

Lift

is

tre

actual travel

of

the disc

away

from the closed

position

when a

valve

is

relìer¡ing,

3,1.12

KOC

Controlling

Team

Any

Kr)C

Team

authorized

to initiate

a request

for

procurement

of

material

ndlor

equipment

for KOC,

or

any KOC

Team

that commands

and/or

manages

and/or

controls

and/or

executes

a

KOC

project.

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3,1.13

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.

3.1.14

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.

A

vessel

may

not

be

operated

above

this

pressure

at any

metal temperature

other

than

that

used

in

its

design.

Consequently,

for

that

metal

temperature,

it

is

the

highest pressure

at

which the

pressure relief

valve

is

set to

open.

3.1.15

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.

3.1,16

Non-reclosing

Pressure

Relief

Device

3.1

.17

3.1

.18

A

pressure

relief device,

which

remains open

after operation and

does

not

reclose itself

unless

manually

reset

or

replaced.

Rupture

disk is

an

example

of

Non-reclosing

device,

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,

feeling,

or

hearing

Operating

Pressure

The

ooerating

pressure is

the

gauge

pressure

to which

the

vessel

or

equipnrent

is

normally

subjected

during

service.

3.1

.1

9

Overpressure

Overpressure

is

a

pressure

increase

over

the

set

pressure

of

the

pressure

relieivalve.

Overpressure

is

similar

to accumulation

when

the

relieving

device

is

set

at the

maximum

allowable

working

pressure of

the vessel.

The

overpressure

is

generally expressed

as

a

percentage

of

set

pressure

or

in

pressure units.

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3,1.20

Pressure-Relief

Valve

(PRV)

A

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.

A

pressure-relief

valve opens when

its

upstream

pressure

reaches

the

opening

pressure.

lt

then

allows the fluid

to

flow

until

its

upstream

pressure

falls

to

the

closing

pressure.

lt then

closes

preventing

any

further

flow.

Examples

of

specific

types

of

pressure-relief

valve

include Safety

Valve,

Relief-valve, Conventional

Safety

Relief Valve,

Balanced

Safety

ìelief

Valve,

and

Pilot-operated

Pressure-relief

Valve.

3.1.21

Pressu e-Relief

Device

(PRÐ)

The Pressure Relief

Device

comprises

of

the Pressure

Relief

Valve, the

Relief

Valve,

t.he

Safety

Relief

Valve,

the

Safety

Valve, and

the

Rupture

Disk

etc. As

such the

PRD could

be any

of

the

above

device

intended

to

protect

the

pressure

vessels, equ[pment

and

personnel

by

automatically

opening

at

predetermined

pressures

and

preventing

the

destructive consequences

due

to

excess

ve

pressures.

3.1.22

Pressu, e

Vacuum

Valve

(PW)

A

weight

loaded, spring-loaded

valve,

used

to relieve excess

pressure

and /or

vacuum

that

has developed

in an atmospheric

or

low

pressure

storage

tank.

3.1.?3

Rated

Capacity

Rated

:apacity

is the

percentage

of

rneasured

flow

at

an

authorized

percent

overpressure

permitted

by the applicable

code.

Rated capacity

is

generally

expres::ed

in

kilograms

per

hour

(kg/hr)

or

pounds

per

hour

(lbslhr)

for

Vapours.

For

gases

it is

expressed

in normal

cubic

meters

per

minute

(NCM/rnin)

or

mtlmin

or standard

cubic

feet

per

minute

(SCFM),

and

for

liquids

ín

litres

per

minute

(L/min) or

gallons per

minute

(GPM),

3.1.24

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.

A

relief valve begins

to

open

when

ihe

static inlet

pressure reaches

set

pressure.

As the

static

inlet

pressure overcomes

the

spring

force,

the

disk

begins

to

lift

off

the

seat,

allowing

flow

of the

liquid.

The

value

of the

closing

pressure

is less than that

of

the

set

pressure and will

be reached

after

the blowdown

phase

is

completed,

Relief

valves

are normally

used

for incompressible

fluids i,e.

liquids.

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PART

I

3.1.25

RelievingConditions

It

indìcates the ìnlet

pressure

and the temperature

of

a

pressure

relief

device

during

ån

overpressure condition. The relieving

pressure

is equal

to the valve

set

pressure

(or

rupture

disk

burst

pressure) plus

the overpressure.

3.1.26

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.

A

safety

relief

valve

is an

automatic

pressure-relieving

device

which

may

be used

as

either

a

safety

or relief valve depending

upon application.

3

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.

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.

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,

air

or

vapor

etc.

3,1.28

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,

3.1.29

Set Pressure

Set

pressure

is the

gauge

pressure

at the

valve

inlet,

for

which

the

safety

relief

valve has

been set

to

open

under service

conditions,

ln liquid

service,

set

pressure

is

determined

by

the

inlet

pressure

at

which the

valve

starts

to

disc'harge.

ln

gas

or

Vapour

service,

the

set

pressure

is determined

by

the

lnlet

pressure

at

which

the

valve

pops.

3.1

30

Simmer

Simmer

is characterized

by the audible

passage

of a

gas

or

vapor

across

the

seating

surfaces

just

prior

to

pop .

The

difference

between

this

start

to

open

pressu-re

and

the

set

pressure

is

simrner,

and

is

generally

expressed

as

a

percentage

of

set

Pressure.

nþ

7/25/2019 KOC-MP-027 part 1


3.2

Ahbrqviations

HSE

HSEMS

ITP

KOC

MAWP

MOP

PIM

PRD

PRV

PW

Health,

Safety

and

Environment

Health,

Safety & Environment

Management System

lnspection

and Test

Plan

Kuwait

Oil

Company

(K.S.C.)

Maximum

Allowable Working

Pressure

Maximurn

Operating Pressure

Pre-l

nspection

Meeting

Pressure Relief

Devices

Pressure Relief

Valve

Pressure

Vacuum

Valve

4.0

REFERENCE.ST.ANDARÐS.CODESANDSPECIFICATIONS

4.1

Conflicts

ln

the event

of

a conflict

between this Standard and

the standards and

codes

or

specifications

referenced herein, or

purchase

or contractual

requirements,

the

sukject

shall be brought

to the

attention

of KOC

Controlling

Team for

review,

consideration,

and resolution

or

amendment

by

Standards

Team,

if

requìred.

4.2 Lislof

Standards

and

Cgdes

The latest edition

of

the

following standards,

codes and

specifications

shall

apply:

4.2.1 National I

lnternational

Standards

API Sto

510

Pressure

Vessel

lnspection

Code-Maintenance

lnspection,

Rating,

Repair, and

Alteratìon

API

RP

520

Part

I

and

tl

API

RP

521

APt

Srd

526

API Std

527

API RF

576

API

RF,57B

Sizing,

Selection,

and lnstallation

of

Pressure

Relieving

Devices

in Refineries:

Part

I

-

Sizing and

Selection

Part

ll-

lnstallation

Guide

for

Pressure-Relieving

and

Depressurising

Systems

Flanged

Steel

Pressure

Relief Valve

Seat

Tightness of

Pressure Relief

Valve

lnspection

of Pressure

Relieving

Devices

Material Verification

Program

for

New

and

Existing

Alloy

Pìping

Systems

Pago 12 of35

OC.

fi¡O.

KOC-MP-027

PART

,|'

REV.

{

q l

*

rl,

7/25/2019 KOC-MP-027 part 1


Þ

,r

REì/.I

ago

f3

of 35

oc.

Ho. Koc-MP{2r

PART

t

4.2.2

API Stc

2000

ASMË

:3ec.

Vlll

Division

1

ASME 816.5

ASME

i331.3

ASME

Ì]TC

25.2001

BS

EN

ISO 4126

(Part

1-7)

BS

ISC 6264

BS

PD 5304

tsCI

9000

tso

9031

NACE MR 0175

/

ìSO 15156 Part 1-3

osHA

1910.219

KOC

Standards/RP

KOC-G-002

KOC-C-007

KOC-C;-009

Venting

Atmospheric

and

Low-Pressure

Storage

Tanks

Boiler

and

Pressure

Vessel

Code

Pipe

Flanges

and

Flanged Fittings

NPS

Through

NPS

24

Process Piping

Pressure

Relief Devices: Performance

Test

Codes

Safety Devices

for

Protection

Against

Excessive

Pressure

Hydraulic

Fluid

Power-Pressure

Relief

Valves-

Mounting

Surfaces

Safe

Use of Machinery

\

Quality

Management

Systerns

-

Fundamentals

and

Vocabulary

Quality

Management

Systems

-

Requirements

Petroleum

and

Natural

Gas

lndustries.

Materials

for Use in

H2S-Containing Environrnents

in

Oil

and

Gas

Production

Part 1:

General

Principles for

Selection

of

Cracking-Resistant Materials

-

Part

2:

Cracking Resistant

Carbon

and

Low

Alloy

Steefs,

and

the

Use of

Cast lrons -

Part

3: Cracking-

Resistant CRA

(Corrosion-Resistant

Alloys)

and

Other

Alloys

Mechanical

Power

Transmission Apparatus

KOC

Standard

for

Hazardous Area

Classification

KOC Standard for

Basic

Design Data

KOC Standard for

Spare Parts and

Maintenance

Data

KOC

Standard

for lnstrumentation

and

Control

System

Design

d.

KOC-t-001

7/25/2019 KOC-MP-027 part 1


tL

*

Þ

Pago 14 of 35

oc. No.

Koc-MP{}z7

PART

I

REV.1

KOC-M)-t27

Part

2

KOC

Recommended

Practice for Pressure

Relief

Devices:

Sizing,

Selection, Twinning,

and

lnstallation

381t02t01

KOC

Recommended

Practice

for

Selection,

Qualification

and

Utilization

of

Third

Party

lnspection

Services

KOC-H$E Document

KOC Fire and Safety Regulations

(Latest)

4.3

PJqiect

Speg -ficatigns

ln

additlon

to the

KOC Standards and

Recommended

Practices

referenced

in

clause 4.2.2 above,

the KOC Controlling

Teams shall designate other

relevant

specificatìons

if required,

for the

titles

listed

below:

Title/Description

a)

General lnstruments

b)

Recommended

Practice

for

lnspection

and Testing

of

New

Equipment

4.4

Order

of

Precedence

4.4.1 The

supply

of

equipment,

materials,

services

and

documentation

shall be

in

accordernce

with

the

State and local

regulations,

Data Sheets

or

Purchase

Order

requirements

of

specífic

project.

Should any

conflict

exist

between

the

listed

dr:cuments,

then

the

most stringent shall govern.

ln

case further

clarifications

are

required,

the

subject

shall

be

brought

to

the

attention

of

KOC

Controlling

Team in

accordance

with

clause 4.1 of

this RP.

4.4.2

4.4,3

in

general

the

following

sequence

of

precedence

shall apply

a)

l(uwait

Government's

Rules

and

Regulations'

b)

KOC Project

Data Sheets

and

drawings.

c)

KOC

Purchase

order

and

specifications.

d)

''his

KOC

Standard

(KOC-MP-027 Paft1)'

e)

|,lanufacturer's

/

Vendor's

standards

and specifications

5.0

ENVIRO

NMENTAL CONDITIONS

5.1

The

environmental

conditions

in

Kuwait

are

severe. Refer

to'KOC Standard

for

Basic

Design

Data"

(KOC-G-007), which

provides

the

basrc

information

requireC

for

deiign

such as

the

ternperature,

wind,

environmental,

site

and

utility s.rpply

conditions

prevailing

throughout

the

Koc

facilities.

The Fressure

Re

Standard

shall

be

lief

Device(s)

(including components)

covered

in

this

continuous

operation

in

the

environmental

5.2

conditir:ns

specified

tu

7/25/2019 KOC-MP-027 part 1


6.0

HEALTHT

SAFETY

AND

ENVIRONMENT

All

applicable

safety requirements

of

Occupational

Safety

and

Health

Administration

(OSHA)

Standard

1910.219

and BS PÐ

5304

shall

be

considered

in the

design,

manufacture,

ând assembly

of

the

equipment

covered

by this

Standard.

The

ManufacturerA/endor/Contractor

shall comply

with

KOC

Fire and Safety

Regulations

arìd

'KOC

Health,

Safety & Environment

Management System

(HSEMS)

requirements

for the

protection

of

KOC

personnel,

adjacent

equipment,

property,

and the

environment during

the

design,

manufacture,

assembly

or

operation

and

maintenance

of

all

equipments

and

accessories

covered

by this

Standard.

6.1

6.2

I

rl'

I

7/25/2019 KOC-MP-027 part 1


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35

OC. NO. KOC.MP.Oz7

PART f

7.0

7.1

7.2

7.3

8.0

8.1

8.1

.1

8.1,2

8.1.3

8.1.4

8.1.5

PßP: IUNGTIONS

AND

WPES

OF

PRESÇURE

F.ELIEF

DEVICES

ln

all

pressurized

systems, the overpressure

relief can

be achieved with

a

variety

of

mechanisms which

include

pressure

relief valves,

rupture disks

or

a

combination

of

the

two devices.

The

types

of

Pressure

Relief

Devices

(PRD)

are

described

as under;

a)

,Spring-Loaded

Pressure

Relief

Valve

(PRV)

i)

ConventionalType

ii) Bellows Type

iii)

Balanced Bellows

Type

(with

Auxiliary Balancing Piston)

b)

Pilot-Operated

Pressure Relief

Valve

c)

Rupture

Disk

For

additional

details

and

characteristics

of

PRD

refer

to

Appendix-3 and

Appendix-4

of KOC-MP-027

Part2.

PRD: DESIGN BASIS

AND

TECHNICAL REQUIREMENTS

Spri

ng

-Loaded Pressu re

Relief

Valve :

Req

u

i

rements

The KOC

should indicate

andior

mark as

applicable,

based on

specific

project

requìrenents,

items such

as

type,

service/process conditions,

materials,

accesscries

etc

in

the

relevant

KOC

Data Sheet

(Appendix-l).

The

design,

manufacturing,

pressure

setting,

code

symbol

stamping,

certification,

marking,

and

other requirements

of

Pressure

Relief

Valves

shall

be

strictly

in

accordance

with

the

applicable

rules

and

requirements

of

the

latest

A,SME

Section

Vlll

Division

1

and this

KOC Standard.

The

performance

testing

of

the

Pressure

Relief

Valves

shall

be in accordance

with lat=st ASME

PTC

25-200'1

Performance

Test Codes.

The

Pressure

Relief

Valve

intended

for

pressure vessels,

equipments,

or

pressurized

systems shall

be

Direct

Sprìng-Loaded

Type,

No

other

type

of

pressure

relief

vaive

including

Pilot-Operated

PRV

shall

be

used on

any

pressure

vessel,

pressure

equipment,

or

pressure

system.

The

sizing

of

the

Pressure

Relief

Valve

shall conform to the

procedures

and

requirements

as

specified

in API

520

Partl

The Manufacturer

/

Ven

requirements

for

PRV,

as

specified

in ASME

Sectio

API 525, and

API

527.

dor shall

also abide

by the following

additional

described

below,

in addìtion to

the

requirements

as

n

Vlll

Div.1,

ASME

PTC

25-2A01,

API

520

Part

1,

8 1.6

d.

7/25/2019 KOC-MP-027 part 1


REV.

f

age

l7

of

35

CIc.

No.

Koc-MP.027

PART I

8.1.7

8.1.8

8.1

.9

B.1 .10

B,1.14

B.1

.15

The

inlet and outlet

flanges facing

and

dimensions shall

be

in

accordance

with

ASMË

B 16.5.

8.1

.1

1 The minimum slzes

of

the flanged Pressure

Relief

Valve shall

not be

less

than

as

follows:

a)

nlet flange

size

25mm

(1

in,)

b)

Cutlet

flange

size

50

mm

(2

in.)

8.1.12

Flanged{ype

PRV

of

size

smaller

than

specified above and

without

ASMË

certification

or A$ME code

stamp

may be

allowed

if essential,

and

only for

certain

select

installations,

provided

its

requirement

is reviewed and

approved

in

writir,g

by

KOC.

8.1.13

The minimum

required effective

orifice

area

of

PRV shall

be

determined in

accordance

with

API

RP

520

Part 1, and the

standard

orifice

area

of the

PRV

shall

be

selected from

the

Table

in API

526.

All

Pressure

Relief

Valves

(threaded

or

flanged)

shall be

starnped with

ASME

Code

JV'Stamp.

The

mirimum

size of the

threaded

Pressure

Relief

Valve

shall

not be less than

as

given

below:

a)

lnlet

size

15

mm

(1l2in.)

b)

Outlet

size

20

mm

(3/4

ìn.)

The

flanged-type Pressure

Relief

Valve

shall be in accordance

with

API

526

The

PRV

inlet

and

outlet flanges

type

and

ratings

shall

comply

with the

applicable

requirements

of

KOC Piping Material

Classes.

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,

However

the

ManufacturerA/endor

shall

ensure

that the

minirnum


ratings

of

PRV inlet and outlet flanges shall

be

according

to

the

applicable

requirements

of KOC

Piping Material

Classes.

The

manufacturing

tolerances

of spring

loaded

PRV

with

ínlet size

4

inches

and

below

shall

be

wjthin t'1.5Bmm

(1/16

in.), and

for

inlet

size

over4

inches

shall

be t

3,17mm

(1/B

in.),

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

B,'1,16

The

centre{o-face

dimensions

of the

PRV

shall

be in

accordance

with

Tables

2

to

Table-15

of API

526.

8.1.17

8.1

.18

as

required

by

KOC

,1

7/25/2019 KOC-MP-027 part 1


REV.

l

age

l8

of

35

oc.

r,¡o. Koc-MP4.27

PART

I

8.1 .19

8.1 .20

8.1.21

8,1.22

B.1

.25

8.1

,26

8.1,27

B,1.28

8.1.29

8.1.23

The space between

a

rupture

disk

device

and

a

pressure

relief

valve

shall

be

provided

with a

pressure

gage,

a

trycock,

a

free vent,

or suitable

telltale

indicator

in

such a

way that

it

shail

permits

detection

of disk rupture

or the

leakage.

8.1,24

The seat

tightness

of

pressure

relief

valve

shall be checked

and

carried

out

in

accordance

with the

requirements

of

API

RP

527.

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, unless

the

setting

is

within

the

spring

design

range

established

by

the valve

Manufacturer.

The

initial

adjustment

of

the

pressure

relief

valve

shall

be

done only

by

the

Manufacturer

or

his

authorized

representative,

or an

Assembler and

a data

tag

shall

be

provided

on the valve

that

shall

clearly

indicate

the

set

pressure

capacity

and date.

The

valve

shall

be

seated

with

a seal

identifying

the

Manufacturer, his

authorized

representative,

or

the Assembler

who

performed

the

adjustment.

Ïhe

sei

pressure

tolerances,

plus

or

minus, of

pressure

relief

valves

shall

not

exceed

13.8 kPa

(2

psi)

for

pressures

up

to and

including 483

kPa

(70

psí)

and 3

for pressures

above

483

kPa (70

psi),

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 0.90 of

the

rated

relleving

capacity

of

the

valve

alone

or

alternatively,

the

capacity

of

such a

combination

shall

be

establisihed

in

accordance

with

ASME

Section

Vlll

Div.

1.

ln case

KOC

requires

seat

tightness

greater

than

that

specified

in API

RP

527,

it

shou:d

be

specified

ìn the KOC Data Sheet

(Appendix-1).

The

maximum

acceptable

leakage rates

through seat of

a PRV shall

be in

accordance

with Table-l

of

API

RP 527,

defined

for

pressure

relief

valves

with

set

pressure

from 103

kPa

gauge (15

psig)

to

41,379

kPa

gauge (600û

psig).

The test medium

for

determining

the

seat

tightness

i.e.

air,

steam, or

water

shall

br: the

same

as

that used for

determining the set

pressure

of

the

valve.

For

dual service

valves,

the test

medìum

such

as air,

steam, or

water

shall

be

the

sarne as the

primary

relieving medium.

For

the

Pressure-Level

Relationship

of the Pressure Relief

Valve

refer to

Figure-1

of Appendix-2

of this Standard.

The

flanged

type PRV

shall

have

integralone-piece

nozzle

The

flanged

type

PRV

with

flanges

attached

by

welding

shall

not

be

acceptable

8.1.30

8.1 .31

&

7/25/2019 KOC-MP-027 part 1


REV,

f

ags

l$

of 35:

OC. f.¡O.

1(OC-MP-027

PART

I

8.1.32

All

castings

for

PRV

shall be

true to form,

shall

be

free

from

shrinkage,

voids,

strains

scales,

lumps,

sandholes

and other defects

etc.

8.1.33

Lifting levers

shall

be

provided

only

on

PRV

intended

for

Air, or

Nitrogen

service.

8,1

.34 No

lifling

levers

shall

operations/service.

be

provided

on

PRV

intended

for

process

8.2

Rupture

Disk:

Bqq ¡iremenÞ

8.2.1

The

rupture

disk alone

shall not be

used

on any

pressure

vessel,

pressure

equipment, or

pressure

systems.

However

it

may

be

used only

iñ

combination

with

a

PRV

under

certain

conditions

as

mentioned

below

provided

its

use

is

absolutely,

genuinely,

and

specifir;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,

or

8.2.2

b)

'fühere

a loss of valuable

material by

leakage

should be avoided,

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

8.2.3

The

design, manufacturing,

code symbol stamping,

certification,

marking,

and

other

requirements

of

Rupture

Disk,

when

specified,

shall

be

strictly

in

accordance

with the

applicable

rules

and

requirements

of

the

latest ASME

SectiorrVlll

Division

1

and this

KOC Standard.

8.2.4

825

8.2.6

8,2.7

The

KOC

should

indicate and mark

as

applicable,

based

on specific

project

requirements,

items

such as

type,

service

and/or

process

conditions,

materierls,

accessories

etc

in

the

relevant KOC

Data Sheet

(Appendix-1).

The Manufacturer

shall ensure

that each

Rupture

Disk has been

duly marked

with

"UD"

Code

Stamp as

per

ASME

Sec.

Vlll

Div,1.

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.

For

the

Pressure-Level

Relationship

of

the

Rupture

Disk refer

to Figure-2

of

Appen,Jix-2

of this

Standard.

d'

7/25/2019 KOC-MP-027 part 1


)>

*

QT

,Í.

REV,

1

age

20

of 35

loc. No. Koc-MP-027

PART

I

8.3

8

3.1

PRV:

Criteria

and.Pasis

of Selection

PRV:

Conventional

Type

The

conventional

PRV

shall

be

used when

all

of the

following

conditions

are

met:

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)

Fr:uling or

corrosive

service

conditions are not

expected

as

it may affect

the upper

part

of

the

PRV.

8.3.2

PRV.

Bellows

Type

ln case the conditions specified

in

Clause

8.2.1

(a)

and

(b)

are

not

met,

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.

b)

Fouling

or

corrosive

conditions are

anticipated and

protection

cannot

be

afforded

by

using alternative

materials

or devices.

c) lf

the

service

fluid

is highly viscous or of a nature

that

it

can

enter

the

critical clearances

behveen

the guides/disc

holder.

d) lt

rs

essential

that

the bonnet of

a bellows

type

PRV

when installed,

shall

be

appropriately vented to the

atmosphere.

8.3.3

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)

Back

pressure,

either

constant

or

variable

is

certainly

present

b)

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,

a

perilous

condition could

occur

any

moment.

c)

lt must

be

ensured

that

when

balanced bellows

type

PRV

with

auxiliary

billancing

piston

is

installed,

their

bonnets

are

appropriately

vented

to

the

atmösphere.

,e

7/25/2019 KOC-MP-027 part 1


RËv.1'

age 2f of35

OC.

NO.

KOC.MF-027

PART,I

8.4 PRD: F

VV

fo,r

Atmospheric

and Low

Press.ure Stora.ge_Tanks

The

Pressure

Relief Devices for

atmospheric and

low

pressure

tanks shall

be

designed

and manufactured

in accordance with

API

Std.

2000.

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,

the

internal

pressure

of each

tank under

any normal

Operating

condition

shall not exceed the

internal

design

pressure

or

the

maxirnum

design

pressure.

The

P\A/

intended use

on

atmospheric

and low

pressure

tanks

for

pressure

and var:uurn release

shall be

spring-loaded type.

The PW intended

to be installed

on

atmospheric and low

pressure

tanks shall

be

flanged

type.

The type, minimum

ratings, and class of

the

inlet

loutlet

flanges

of

the spring-

loaded

flanged

type

PW

intended

for

atmospheric

and

low

pressure

storage

tanks shall

be,

unless otherwise specified

by KOC,

ASME

B 16.5,

RF,

150

ratings,

and the

class

shall

be

as

per

the

KOC

Piping

Material

Classes.

8.4.6

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. The

Relief

devices equipped with

a weight and lever arrangement

shall

not be

L¡sed.

8.4.7

The PW

shall

be designed such

that

in

the event

of failure of any

of its

essent'al

parts,

the

PW shall

never

fail

to

protect

the tank

on

which

it is

installed.

841

8.4.2

8.4.3

8.4.4

8.4.5

8.4.8

8,4,9

8.4.10

8.4.1

1

PW

valves specified here

shall be

used

on atmospheric and

low

pressure

storage

tanks in

which

petroleum

or

petroleum products

are

stored.

ln

addition to

several

provisions

for

emergency venting,

such as

use of

additional

PW, or a

gauge

hatch

that

permits

the

cover

to lift

under

abnormal

internat

pressure,

a frangible

roof{o-shell

attachment,

as

described

in API

Standard

650, is

most

imperative.

The

tVlanufacturer /

Contractor

shall ensure

that the

requirements

for

a

frangible

rooËto-shell

attachment,

as specified

in

API

650,

are

strictly

followed

and

met.

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'

8.4,12

Twin

frW

shall

be

installed

on all

atmospheric

and

low

pressure

tanks

intended

for

storing

h.ydrocarbons

(sweet

or

sour)

irrespective

of size

and

pressure.

7/25/2019 KOC-MP-027 part 1


DOC. NO.

KOC.MP{'27

PART

T

REV.1

age

22

of

35

8.4.13

The

inlert

of

a

PW

shall be

fitted

with butterfly type isolation valves

and car-

seal.

The

isolation

valves

installed

with

pressure

vacuum

valves shall be

butterfly

type, and full-bore.

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.

For

additional details

showing installation

of

Twin

PRV, lsolation

Valves. refer

to

Figure-10,

Figure-11,

Figure-12,

Figure-13, and

Figure-16

of

Appendix-5 of

KOC-Mr-027

Parl2.

8.5

PR?:.ïhgrmal

Relief

Vglves

8,4 t4

8.4.1

5

8.4.16

8.5.1

8.5

2

8.5.3

8.5.4

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,

and

is subjected

expansion due

to

rise

in

environment, resulting

in

the

rise of

internal

pressure

that

may

exceed

the

maximum allowable operating

pressure.

This

shall not

cover

the

expansion

of

liquids in

the

piping

or

pipelines

due

to

fire contingencies.

This shall

not

cover

insulated

or buried

piping/pipelines

which

normally

operate

at above

the ambient temperature.

The

thermal

relief

valve

shall

be instalìed

in the

following

conditions,

unless

otherwise

required

by

KOC:

a)

On

each

section

of

the

cross-country

pipelines

between

main

line

l:lock-valves,

when

the

above

ground

length

of

pipe

exceeds 1to/o

ol

the total length

of that

section.

b)

On

each section

of

above

grade

plant

piping

carrying

liquid which

is

blocked-in

or

stranded

by

tight closing

valves and blinds,

unless

the

:;um

of the

cross-sectional

flow

area of

non-blinded

,

conventional

'¡¡edge

gate

valves

exceeds

the liquid

volume

of

the

section divided

by

60

meter.

c)

3n

the

piping

in the

heat

exchanger

in which

the

liquid

is

blocked

and

reated

between

the block

valves.

On that

section

of

piping

which lies

between

the

storage

tanks, or

in the

tank

farm,

in

which the

liquid

is stranded

and

heated

between

the

block

valves.

d)

8.5.5

The

seit

Pressure

of

the

thermal

relief

valve

shall

not

exceed

110%

of

the

maximum

allowable

oSerating

pressure for

the

maximum

temPerature

during

stress,

co

shut

irr,

considering

any other

weakest

co

p

sy

stress,

flange

ratings, and

r-1

7/25/2019 KOC-MP-027 part 1


8

5.6

8.5.7

8.5.8

8,6.6

8.6.7

The

lor;ation of

the

thermal

relief valve

on

sections of

cross

country

pipeline

shall

be

selected

by

KOC

based

on

accessibility,

valve

safety,

and

parameters.

The

thermal

relief

valves

which

are

not located

within

a fenced

area

shall be

provided

with

suitable cover to

prevent

tampering

or

damage.

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.

The

isolation

valves

shall be

carefully administratively

controlled

to

achieve

maximum

safety of the equiprnent,

the

system

and

the

plant.

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.

8,5.s

The

outlet

of

thermal

relief

valve installed

on the

pipelines,

which

releases

hydrocarbons or

other

liquids/vapors

shall discharge

at

the

grade

or

as

required

by

KOC.

8.5.10

The

therrmal

relief

valve shall

not

be

less

than

3/oin.

size

8.6 lsolation Block Valves and

Car-Seals:

Reouirements

I*lFOR7',lNT

NO'lþ;:

'l'|rc:

i.sottitiot¡

ltlock

:'.r.tlvst

and lha

cur-scul.t,

tlto¡tgh no

<t

nrumleilot1'

¡rurt

eJ

this dc¡cu:nent, httt'.'cvar thc.y

ure ìilp()rt.tnl .since

tltet,

constitutc

en

essantial

gjelr?enl

ú

PRÐ

asscgr${t,.

'|.'l¡e

,Vla*¡liactttrar

/

Ilcndet

is tltt:rcfiva

¡r¿1t,r.s¿d

to uhitle

þ)'

t]rc tecl¡tt¡cul ret¡uírenents

as

.r¡.xrcif*r/

helot', in

tu.se

the isolulit¡tt hloe'k

t'alvc.s

aud <:ar-scals

ara

ortlerccl

h),

KOC'.

8.6.1

The

block valves

shall

be

used

as

isolation

valves

in combination

with

PRV

to

facilitate

in PRV

maintenance,

replacement,

or other

purposes.

8.6.2

ln

case

the

block valves

are

not

available, then

as an

alternative,

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.

8.6.3 The

isolation

block valves shall

be

provided

with

appropriate

Car-Seal

Open

facility.

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,

unless

physically

cut

by

a

wire

cutter

or

by

forceful

hammering,

8.6.5

The isolation

block valves used

for

the

pressure

relief valves shall

be full-bore

roddable

type.

*

Þ

er

REV. l

OC.

NO,

KOC4'1P.027

PART

I

8.6.8

The

isolation

valves

to KOC

Pi

Classes

þ

7/25/2019 KOC-MP-027 part 1


DOC.

NO.

KOC.MP.Oz?

PART

1

REV.

l

age 24 of.35

9. 1

9.2

9.3

9.4

9.5

9.0

PRD:

MATEFIAL

REQUIREMENTS

KOC should consider

the

project

specific

requirements

when

specifying the

materia¡s for

PRV

in

KOC

Data Sheet

(Appendix-1).

The


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,

whichever

is

more

stringer

t.

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.

The

ManufacturerA/endor

shall ensure that

the

materials used

in

PRD

(and

isolation

block vaìves

if

required) are

appropriate

for

the intended

service

i.e.

hydrocarbons

(Liquid

/

Gas:

sweet or sour)

or water

(produced

water,

brackish

water,

effluent

water etc.)

and it shall also conform

to

the

KOC Piping

Material

Classes.

When

the

pressure

relief

valve incorporates

bellows

and it is to

be used

in

sour service,

the

minimum

material requirement

for

bellows

shall

be

Nickel

based

irlloys

{such

as lnconel

625

(UNS

N06625),

or

Hastelloy

C-276

(UNS

N10276)),

and

it

shall

be

suitable

for

the

service conditions

and

shall

also

satisfy .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,

then

each of them

must meet

the

minimum

pressure-

temperature

requirements

of the

system.

The

mirimurn

body

and bonnet

materials

of

PRV,

if not specified

in

KOC

Data

Sheet

(Appendix-1), shall

be

equivalent

to or

better

than

the types and

grades

as sper:ified

in

API 526. However

the Manufacturer

/

Vendor

shall also ensure

that

the¡se

materials

satisfy

the

NACE

MRO175

/

ISO

15156

requirements for

sour

serrvice,

as

well

as

conform to

the

requirements

of KOC

Piping

Material

Classes.

The

Manufacturer

/

Vendor shall

ensure

that

the

PRV

trim

materials,

if

not

specified

in KOC

Data

Sheet

(Appendix-1), shall

conform

to

the

requirements

oi

ruRCe

MR0175

/ ISO

15156

for sour

service,

as well

as

Koc

Piping

Material

Classes.

The

spring

material

of the

PRV

shall

be,

if

not

specified

in

KOC

Data Sheet

(Appendix-i),

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,

it

should

preferably

be

nickel-based

alloy

such

as

lnconel

X750

or

equivalent

or better

or

alloy

UNS

N07750

or

N

07090.

9.7

9.8

oq

rþ

7/25/2019 KOC-MP-027 part 1


DOC.

NO.

KOC.MP-027

PART I

REV.

f

age 25

of

35

The PRV springs

for

additional

protection

against corrosion shall be coated

if

reguirecl by KOC,

The

coating

shall

be

suitable

and

compatible

with

the

service

fluid and

the

operating

conditions.

The

ferrous materials components

of

PRV

when

used

in

sour service,

shall

have

the Yield

Strength

not

exceeding

620

MPa

(90,000 psl),

and the

hardness

not

exceeding 22 HRC.

1O.O GUARANTEE

& WARRANTY

10.1

Guarantee

All

Pre3sure

Relief Valves and their component and

parts

shall be

guaranteed

by

the

Vendor

/

Manufacturer

against defective

materials,

design and

workmanship.

10.2

llUarrang¿

The

Vendor

I

Manufacturer shall

provide

a Warranty against all

Pressure

Relief

Devices,

par1s,

and

associated component

in

accordance with

the

purchase

order or

contract documents.

11"0

INSPËCTION

AND

TESTING

11.1

General

The Vendor shall carry out

all

the KOC requirements

of

inspection and

testing

as specifìed

in

Contract document

or

Purchase

order,

9.10

9.1

1

'11.2

11.2.1

11.2,2

11.2.3

lVlaterial lnspec.tion

and

.9e4ification

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 Manufacturer

/

Vendor

shall

submit

to

KOC,

the

duly filled

out

KOC

Data

Sheets

for PRD

for review

and

approval.

Material

test

certificates

shall also

be

submitted

to

KOC

for review and approval

before

start

of

manufacture

and

or

assembly

of

PRD.

The

testing of

PRD materials

shall

be

carried

out by the Manufacturer

or by an

accredited

testing

laboratory approved

by

KOC-

¡. -

¿.-]

*

,þ

7/25/2019 KOC-MP-027 part 1


NOC. NO. KOC.MP4?T

PART

1

Page 26

of

35

REV.

,|

11.3

Shop

lnspection

The

vendor shall be

responsible

for

all

required

QA/QC

and

inspection

work to

satisfy the

requirements

of

this

Standard.

KOC may

additionally employ

the

services

of inspectors,

if

deemed

necessary,

to

witness the

inspection and

testing

cf

materials

and

the equipment covered by this

Standard.

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,

assembly,

inspection and testing

of

all

pieces

and

parts

of

equipment and supplíes

covered by

this

Standard.

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.

KOC

will decide

if

KOC inspector

will

be

present

at

all

times

when work

is in

progress.

11.3.4

Positive Material

[dentification

(PMI) (wherever

applicable)

of

pressure

comporents

such

as

body and

bonnets, as well

as the

trim

parts,

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.

11.3.1

11.3.2

1

1,3.3

11.3.5

11.4

11.4.1

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),

or

purchase

documents.

9ualiïy

Plan

The

equipment

vendor shall

prepare

and

submit a detailed

quality plan

for

KOC

approval,

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.

The

plan

shall

include

fabrication,

assembly,

inspection

and

testing

and

packing

for shipment

in a

chronological

order,

showing

the

frequency

of

control,

the

acceptance

limits,

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

mark-

up

oi

the

lTP,

and

confirm

the

requirements

for

witnessing

(W)

surveillance

(S),

monitoring

(M),

and

reviewing

(R)

in

the

ptan

The

approved

quality

plan

shall

be

strictly

adhered

to

throughout

the entire

fabrication,

assembly,

inspection,

and

testing

period.

þ

7/25/2019 KOC-MP-027 part 1


tL

Þ

r-

*

o

Acqep.tabilitv

C

[it eria

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).

Each and every PRD

supplied

shall

satisfy the set

pressure

and

seat

tightness,

and

other

requirements as

specified

ín

KOC

Data

Sheet

(s).

The

Manufacturer

shall fully

ensure

that the

supplied PRD

conforms

to

the

requirements

of

this

KOC Standard,

the

codes

and

standards

referenced

herein, and are

fit

for the

purpose.

12.0

Q-UALITY

ASSURANCE

The

Manufacturerfuendor shall

operate

quality

systems

to

ensure

that

the

requirements

of

this

Standard are

achieved,

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. Verification

of

Manufacturer's

/

Vendor's

quality

system

is normally

part

of

the

pre-qualification

procedure

and

is,

therefore,

not

detailed in this Standard.

13.0 PACKING,

MARKING

AND DOCUMENTATION

11,5

11.5.1

11.5.2

11.5.3

13.1

13.2

13.3

Packing,

markíng,

and

shipping

documentation

shall

comply with

the

requirements

of

KOC Standard

for

Packing,

Markìng

and

Documentation

(KOC-G-004i

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.

Further

all

other

markinç¡s

on

PRV

shall

be

as

per

the requirements

of

UG-129

of

ASMË

Sec.

Vlll

Div.1.

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.

The

Manufacturer

/ Vendor shall abide

by

the requirements

of

ASME

Section

Vlll

Div.1

for markings

on

PRV

and Rupture

Disks.

As

a

minimum

requirement

the

following

shall

be

marked on

the PRV.

a)

Name

of

the Manufacturer

b) Manufacturer

Design

or

Type

Number

c)

NPS

Size

d)

Set

Pressure

e)

Certified

CaPacitY

Y:ar

of

Built

ASMË

UV

Symbolor

ASME

UD

Symbol

(as

applicable)

f)

s)

REV.

I

age

27

of 35

OC.

NO.

KOC-MP{z?

PART

I

tu

7/25/2019 KOC-MP-027 part 1


7/25/2019 KOC-MP-027 part 1


Ø

PPET.TpTX-1

DATA

SHEET:

.SP.RII.IG

LOAD,E.P PRESSURE

RELIFF VALVE

(For

Additional details

refer

to

API

520 Part l)

Kuwait Oil

Company

l/

Þ

r

4

-

v

tu

q

REV.

I

age

29

of

35

oc. f-¡o. Koc- tP-027 PART

f

Vendor C¿lculations Re€ulr€d:

Yes

I

Xl

No

t

I,

7

Èlodrl

I'lumber:

1.

5.

Månufa{turer

t{êrne:

¿.

itç:

5.

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nFtirinãa¡ôn

f

ìÊt'lÉr

1. *rrtç:

4

qêlê{îed

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rerçure

Celfril ¡t*¡'l

('lri

flrÉ

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,

3l¡ll.¡6

A¡¡D

SÉLECTION

re

lç:

àtent Heal

0r

VaBo¡i¿elion and

un

0.

Blorvdownr Standard

I I

Orher

f

9.

a.

O¡her

t I

Ssecifvl

ûèràrlnô

Fressure and Units:

ßus

Scrsen: Y¿s I ì

ltlo

f

I

t

_

Trçt Íì;rildp:

YÉ

I I

Nr

f

I

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lFåctèdf

l¡]oneI I

9.

equlred

Cape{lIT

per

Valve and

Unitgr

lb/hr

{,

C¿o: SirevT€dl lEÕltedf I

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xl

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t Ì

21

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AIVC DEIICN

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¡'lol

I

Flref

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l9oecitu:

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rrelth.âPl

526: Yes

f l'

Not

I

flthlr f

I

qnÊr

ode: ASME

blll

fXl

Stamo Reçuired:

Yeg

I

I

No

f

I

8A$S

OF

gÊLECTION

ÊNERÂ[

&l

SPRING

LOADED

PRESSURE

RELIEF

VALVE

SPECIFICATION

SHEET

Revlçed

DåIÊ

R€quÍsjtion

No.

sh€et

¡{o,

fåge

of

NOTE:

KOC

ta

mark

/

Íntlicate

items to be

filled

in

by the

ManufacturerNendor

with an

Asterisk

(*).

¿J

7/25/2019 KOC-MP-027 part 1


Ø

PPENDIX-1

DATA

S

HEET :

PI

LOT-OP..ERATE

D

PRESS

URE

RE LIE F

VALYE

(For

Add¡tianal

detaits

refer

rc API 520 Part l)

Kuwait Qil Company

Page 30

of

35

OC.

NO.

KOG.hTP{27

PART I

REV.1

57

61

qlt*¡rahtã

Overpo.ts*¡e

iJì P€rc€nt

d Ulìtl$:

6

ffi¡Gen*¡t

fe*

P¡stsure ¡nd|Jnrb:

5.

r¡pe$m*e¡s8d

8,¿cl

Pree*¡ro

and

Unit¡l

4

59.

fficeA€a

.n t-up

B*ek

Pres¡re

ârld

Uürts:

3.

st¿¡NG A¡¡Ð

SELECTIOII

efid

?..

Op€r¿ling

Tenïer*u¡s

sr¡d

Ur þ:

1

Lorent

tteat

.f

V"F,o;retjú¡

ad

Unís:

O

41.

lTed

Ga€s:

Ye3

I I

I\¡o

I

iffi¡ru

Srônd'rd

t I

O{þr

t I

ít{

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8

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ãn¿

t

l¡vts:

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?o

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l¡tdacãlq: Yea

I

r.b

',rì*co*ity

el Fkrfft¡g

tåmp€.aturo

¡nd

Units;

t.

37.

FieH

Teet Csì¡ì€€rion:

Ye€

y

5

36

Pacftâd

I¡¡¡ns

4.1

35

Fiher

Yet

NÔ

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efid SlålÊ:

3

ACCESSORJE9

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coNDlTlol¡s

4.

ûlhsrllSoeol¡¡

6

33

32.

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r*et $i¡ç:

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I

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I

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3

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I tr

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t I

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lv

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ì€.rrirsd

Date

Job No

No.

NOTE:

KOC

to

tTtark/

indicate

items

by

the Møn

an

Asterisk

(')

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7/25/2019 KOC-MP-027 part 1


Ø

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DAfÂ

$HEET:

RUPTURE

DISK9EVICE

(For

Additional details

refer to

Afl

52A

Pqrt

l)

Kuwa¡t Qîl Campany

the

Manu

:-:

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aitrnl¡fâc1lrÈfs

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& rdåü

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åral

levlseú

nale

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No.

Reautsltiari No.

She¿l Nõ F-?E d

,

RUPTURE

DISK DEVICE

.

SPECIFICATION

SHEET

REV. I

age 3t of35

OC.

NO.

KOC.MP{}z7

PART 1

NOIEr

KQC

to

mark

/

indlcate

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ith

ctn

Asterisk

(")

¿r

7/25/2019 KOC-MP-027 part 1


APPENDIX.2

FIGURE-1: THE-,PRESSURE-LEVEL

RELATION_SHIP

FOR.PRV

(Sau¡ceiAPI

S2tì

í'art

l)

tlltsn¡¡märÐ

sûaûilSûlltSræü¡rr,

für.r$r,¡ÈûI1$¡

121

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tf,llræ1ç

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g

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7/25/2019 KOC-MP-027 part 1


P

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T

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33

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KOC.MP{2?

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I

APPENDIX-2

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7/25/2019 KOC-MP-027 part 1


q

IL

REV

,|

Page

34

of

35

oc.

No. Koc.MP-027

PART I

ACKNOTìILEDGEMENT

This KOC

Starrdard

has

been

approved

by

the

Standards

Technical

Committee

(STC)

consisting

of

the

following.

Mr.

AJRedha

Al-Haddad

Mr.

Mohammad

Emam

Mr.

S. Kumar

Mr. Henry

Hill

Mrs.

Amina

Raiab

Mr.

Khalaf Harnada

Mr.

N,

Ramanathan

Mr,

Khalid Al-A.hmad

Mr.

Daniel

Pino

Mr.

Ali

Hassan

Al-Failakawi

Dr.

Modistaba

Araghi

Mr.

Abdut

Aziz

Akbar

Mr,

Moataz

Khalaf

Standards

ïeam

lnsp.

& Corr.

Team

(S&E)

Standards

Team

Opns.

Tech.

Svcs, Team

(SK)

Design

Team

Design Team

Major

Projects-EFP

Team

Gen. Projects Team

Utilities

ïeam

HSES

ïeam

lnsp.

& Corr.

Team

(N&W)

Project

Mgmt.

Team

(NK)

lnformation System

ïeam

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

Team Leader Design

AHMADI SERVICES

GROUP

Team

Leader

Project

Design

Team Leader

Utilities

TIONS GROUP ISKI

Team

LeaderOpns.

Tech.

Svcs

OPE

TIONS GROUP IWK)

Team

Leader

Opns.

Tech.

Svcs

OPE.RATIONS

GROUP

{NK)

Team

LeaderOpns.

Tech.

Svcs

INNITSTFIIÄI SERV¡CES GROUP

MAJOR PROJECTS

GROUP

Tearn

Leader

Project Support

HsE.GR9LF,

Team Leader

Safety

Team Leader

HSE Systems

EXPORT

& MARINE

OPNS.

GROUP

Team

Leader

Export Services

DRIILING

OPERATIONS

GROUP

Team Leader Drilling Services

DrvrDED

?ONE

GROUP

Team

Leader

Proj,

Ëngg.

&

Facilities

rp

Team

Leader

lnsP.

& Corr.

(N

&

WK)

7/25/2019 KOC-MP-027 part 1


This

KOC

Standard

for

Pressure

Relief

Devices:

Design and Materials

{KOC-MP-

027 PART 2,

Rev.1) has

been

prepared

by

the

Task Force

(TF-MPI07)

comprising of the

following:

Mr,

Miza

Mohsirr

Mr,

Raj

Maharaj

Mr, Adnan

Bohammed

Mr.

Yousef M.

Zaman

Mr.

Nawaf

Al-Shehab

Mr.

Mohammed

Al-Ajmi

Standards

Team

Major

Projects

Team

Design

Team

Opns.

Tech.

Svcs,

(SK)

Opns.

Tech.

Svcs.

{NK)

Opns.

Tech. Svcs.

(WK)

TF

Leader

&

Author

Member

Member

Member

Member

Member

Ex: 61

371

Ex:

66975

Ex:61815

Ex',22241

Ex'.23437

Ex:

20336

R

Documents

KOC-MP-027 part 1