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PROCEDURE

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MCI-110

PAGE NO. 01

TITLE Valve Inspection OF 02

DATE Marc! "00# REV. NO. 0

1.0 P$rpose%

To ensure that testing and inspection of vaves is perfor!ed proper" and in

accordance #ith the re$uire!ents of AP%&'() and *or as specified +" affiiates.

".0 &cope%

This procedure covers inspection and pressure test re$uire!ents of vaves ,e.g. gate-go+e- pug- +a- chec- +utterf" vave/

'.0 De(initions%

.1 &ell Test%

%s !ade +" app"ing pressure inside the asse!+ed vave #ith vave end cosed

and vave disc is partia" open.

.2 )ac* &eat Test%

%t is !ade for vaves that has +ac seat feature +" app"ing pressure inside the

asse!+ed vave #ith vave ends cosed and vave disc is fu" open andpacing gand oose.

. Lo+ press$re clos$re test%

%s !ade +" app"ing at one side of the vave and vave is fu" cosed #ith the

other side open. %t is used to chec the vave seat*disc tightness.

. ,i press$re clos$re test%

%s !ade +" app"ing at one side of the vave and vave is fu" cosed #ith the

other side open. %t is used to chec seat*disc tightness and integrit" of the disc.

.0 /eneral Re$ireents%

.1 A ne# vaves sha +e tested as per AP%&'() or as per !anufacturer3s

approved standard if no industria standard has +een specified.

.2 A inspection and testing of vaves in service sha +e carried out as per AP%&

'() ,vave inspection and testing.

. An" #eding repair sha not +e carried out #ith $uaified #eding procedure

approved +" affiiates.

. 4tee vaves sha not +e painted or e5terna" coated +efore the she pressure

test is co!peted.

.' A pressure gauges used for testing sha +e cai+rated and having a range of

1.'&2 ti!es of test pressure.

8/10/2019 Valves Inspection Procedures

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PROCEDURE

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MCI-110

PAGE NO. 02

TITLE Valve Inspection OF 02

DATE Marc! "00# REV. NO. 0

.6 Test (l$i2

.'.1 Test fuid !a"+e air- inert gas- erosene- #ater or non&corrosive i$uid

#ith veocit" not higher than air and #ater.

.'.2 Test fuid te!perature sha not e5ceed 12' F,'2 7

.'. For testing austenitic stainess stee vaves choride content of i$uid

used for h"drotest sha not e5ceed 100 pp!.

.6 Test duration sha +e !aintained as per ta+e& of AP%&'()

.8 A pressure tests sha +e repeated on vaves after an" #ed repair on the vave.

.) Vave test sha +e docu!ented in vave test report.

3.0 Press$re Tests%

A t"pes of vaves sha +e tested as per the re$uire!ent of AP%&'(). ,4he test- +ac

seat test- o# pressure cosure test- and high pressure cosure test as appica+e.

4.0 Re(erences%

1. AP% '() Vave %nspection and Testing

2. A49E * AN4% :16.

#.0 Attacent%

None.