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LARSEN & TOUBRO LIMITED

PAGE NO.- 1 OF 4

DATE:-01.11.2007MSQ (EPCC-1) UPGADATION

PROJECT REV.NO.- 00

MAGNETIC PARTICLE TEST PROCEDURE NO.-

LT/MSQ/P/MPT/008

CONTENTS

SCOPE

REFERENCE DOCUMENT

GENERAL

QUALIFICATION OF PERSONNEL

EQUIPMENT

PROCEDURE

INTERPRETATION

POST CLEANING

DOCUMNTATION

SAFETY

APPROVED BY L & T REVIEED ! APPROVED BY JACOBS

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LARSEN & TOUBRO LIMITED

PAGE NO.- 2 OF 4

DATE:-01.11.2007MSQ (EPCC-1) UPGADATION

PROJECT REV.NO.- 00

MAGNETIC PARTICLE TEST PROCEDURE NO.-

LT/MSQ/P/MPT/008

1.0 SCOPE

This procedure describes the method for Magnetic Particle Testing of ferromagnetic materials and

welds, for piping construction work of MS !p gradation Pro"ect, #O$% Panipat&

2.0 RE"ERENCE DOCUMENT

(SM) *oiler + Pressure essels code Section -. /ondestructie testing

(SM) *'1&' $hemical plant and petroleum refiner0 piping&

(S/T ecommended practice . S/TT$(1

#.0 GENERAL

'&1 Magnetic Particle Testing shall be applied to detect surface + subsurface discontinuities of

ferrous material&

'&2 *efore Magnetic Particle testing, surface to be tested shall be cleaned, to allow the magnetic

particles moement according to flow and direction of magnetic flu3&

4.0 QUALI"ICATION O" PERSONNEL

&1 #ndiiduals performing Magnetic Particle Testing shall be trained and 5ualified (S/T leel## in

accordance with S/TT$1( or e5uialent&

&2 %eel # Person ma0 perform the testing under %eel ## 5ualified persons6 instruction and

superision&

$.0 EQUIPMENTS

&1 !nless otherwise specified, 0oke t0pe magnet shall be used& This method shall be applied to detect

discontinuities that are opened to the surface of the part to be e3amined&

&2 The ($ electro magnetic 0oke should hae the capacit0 to lift 17 lbs at the ma3imum pole spacing that

will be used& For 8$ or permanent magnetic 0oke shall hae a lifting power of 47 lbs at the

ma3imum pole spacing to be used&

&' The Ferro magnetic particles used in the e3amination medium can be either wet or dr0&

APPROVED BY L & T REVIEED ! APPROVED BY JACOBS

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LARSEN & TOUBRO LIMITED

PAGE NO.- ' OF 4

DATE:-01.11.2007MSQ (EPCC-1) UPGADATION

PROJECT REV.NO.- 00

MAGNETIC PARTICLE TEST PROCEDURE NO.-

LT/MSQ/P/MPT/008

&4 9hen wet particle is used, application of white back ground paint is preferred to obtain contrast

between the magnetic particle and surface being e3amined& The colour of the magnetic particle

shall be sufficientl0 different than the e3amination surface& The magneti:ing current shall be turned

on after the particles hae been applied& Flow of particles shall stop with the application of current&

9et particles applied from aerosol spra0 cans ma0 be applied before and;or after magneti:ing

current is applied&

& #f prod t0pe e5uipment is specified, test shall be performed with the prod spacing of

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LARSEN & TOUBRO LIMITED

PAGE NO.- 4 OF 4

DATE:-01.11.2007MSQ (EPCC-1) UPGADATION

PROJECT REV.NO.- 00

MAGNETIC PARTICLE TEST PROCEDURE NO.-

LT/MSQ/P/MPT/008

7.0 INTERPRETATION