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Magnetic Particle Examination by

Yoke Technique.

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Division Dae : 21/12/2!!"

REVII!N T"T#

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$odre% & 'oyce M(g. )o. *td.Process #$ui%&en Division' (i)*ro+i' Mu&,ai !! !

Rev.No.

Date Description Preparedby

Checked &Approved by

Level III

0 25/02/1994

Original J.S.Janjuha J. 0. Goradia

1 31/12/199 Revision V.B.Deolalika V.B.Deolalikar

2 1/!1/2!!1 Revision (.0.Deo+a+i)ar (.0.Deo+a+i)ar

3 2!/!1/2!!2 Revision (.0.Deo+a+i)ar (.0.Deo+a+i)ar

12/!2/2!! Revision o ddenda 2!!3 (.0.Deo+a+i)ar (.0.Deo+a+i)ar

1/!"/2!! Revised o co&%+4 #d. 2!! C.R.Pra,*une (.0.Deo+a+i)ar

!1/!1/2!! Revised o co&%+4 5i*

ddenda 2!!

C.R.%ra,*une (.0.Deo+a+i)ar

!/!3/2!! Revised o co&%+4 5i*

6M# 6ec (777' Div 3'

#d.2!!' ddenda 2!!

C.R.Pra,*une (.0.Deo+a+i)ar

" 1/!/2!! Revised o inc+ude

addiiona+ visi,+e +ig*

e$ui%&ens

C.R. Pra,*une (.0.Deo+a+i)ar

2!/12/2!! Revised o co&%+4 5i*

ddenda 2!!

(.0.Deo+a+i)ar (.0.Deo+a+i)ar

1! 21/12/2!! Revised o co&%+4 5i* #d

2!!

Mi+ind Dar8e 6e)ar Jesud*ason

11 21/12/2!!" Revised o co&%+4 5i* d

2!!"

Mi+ind 9 6e)ar Jesud*ason

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1.0 SCOPE

1.1 his !ro"e#ure "overs $he %agne$i" &ar$i"le '(a)ina$ion )e$ho#using !or$a*le +,/D, ele"$ro)agne$i" -oke or !er)anen$ )agne$okes *- using non uores"en$ visi*le erro)agne$i" !ar$i"les an#a""e!$an"e s$an#ar#s hi"h shall *e olloe# henever %agne$i"&ar$i"le e(a)ina$ion is s!e"ie#.

1.2 his !ro"e#ure shall *e use# $o #e$e"$ "ra"ks an# o$her

#is"on$inui$ies on or near $he sura"es o un"oa$e# erro)agne$i")a$erials an# el# join$s o all sha!es an# sies. he s$age6 e($en$an# lo"a$ion o e(a)ina$ion shall *e as s!e"ie# in 7uali$-+ssuran"e &lan.

1.3 Reference Documents:he !ro"e#ure is in "onor)an"e i$h $here8uire)en$s o +S%' Se". V +r$i"le '# 200 +##200: an#Se"$ion V;;; Div.16 Div 2 < Se"$ion 1'# 200 +##200:.

.1.4 Personnel Qualication:he !ersonnel e)!lo-e# or e(a)ina$ion

6in$er!re$a$ion an# evalua$ion shall *e 8ualie# an# "er$ie# as !er=o#rej >ri$$en &ra"$i"e ?o. =DJ/7+,/?D'@1.

2.0 PROCED!RE "!ALI#ICA$ION

2.1 his !ro"e#ure shall *e 8ualie# *- $he #e)ons$ra$ion $o $hesa$isa"$ion o +AOR;S'D ;?S&',OR +; as !er +S%' Se".V !ara @150 an# shall *e re"or#e# an# #o"u)en$e#.

2.2 his ri$$en !ro"e#ure is *ase# on $he essen$ial an# non essen$ialvaria*les )en$ione# in $he a*le1.

2.3 he "hange o a re8uire)en$ in a*le 16 i#en$ie# as an essen$ialvaria*le shall

re8uire re@8uali"a$ion o $he ri$$en !ro"e#ure *- #e)ons$ra$ion.

2.4 he "hange o a re8uire)en$ in a*le 16 i#en$ie# as non@essen$ialvaria*le #oesno$ re8uire re@8uali"a$ion o $he ri$$en !ro"e#ures.

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2.5 +ll $he "hanges o essen$ial varia*le < non@essen$ial varia*le ro)$hose s!e"ie#

i$hin $he ri$$en !ro"e#ure shall re8uire revision o6 or ana##en#u) $o $he ri$$en !ro"e#ure.

3.! TE)+NI,#E !- M"$NETI"TI!N

3.1 Yoke technique, which can use alternating or direct currentelectromagnetic yokes, or permanent magnet yokes.

4.0 E"!IP%EN$

4.1 +n- !or$a*le +,/D, 'le"$ro)agne$i" -oke "ali*ra$e# in a""or#an"ei$h !ro"e#ure =DJ/7+/%@4 shall *e use#.

4.2 CALIRA$ION

4.2.1 Visi*le ligh$ )e$er Cu( )e$er shall *e "ali*ra$e# a$leas$ on"e a-ear or henever$he )e$er has *een re!aire#. ; )e$ers have no$ *een in use or

one -ear or )ore6 "ali*ra$ion shall *e *eore *eing use#.4.2.2 Ci$ing !oer o oke &rior $o use6 $he )agne$iing !oer o

ele"$ro)agne$i" -okes shall have *een "he"ke# i$hin $he !as$-ear. he )agne$iing !oer o !er)anen$ )agne$i" -okes shall *e"he"ke# #ail- !rior $o use. he )agne$iing !oer o all $he -okesshall *e "he"ke# henever $he -oke has *een #a)age# or re!aire#.'a"h #ire"$ "urren$ or !er)anen$ )agne$i" -oke shall have a li$ing!oer o a$ leas$ 40 l* 1: kg a$ $he )a(i)u) !ole s!a"ing $ha$

ill *e use#. 'a"h eigh$ shall *e eigh$e# i$h a s"ale ro) are!u$a*le )anua"$urer an# s$en"ile# i$h $he a!!li"a*le no)inaleigh$ !rior $o rs$ use. + eigh$ nee# onl- *e verie# again i#a)age# in a )anner $ha$ "oul# have "ause# !o$en$ial loss o)a$erial.

4.2.3 %agne$i" Eiel# +#e8ua"- an# Dire"$ion he a!!lie# )agne$i" el#shall have suF"ien$ s$reng$h $o !ro#u"e sa$isa"$or- in#i"a$ions6 *u$shall no$ *e s$rong $ha$ i$ "auses )asking o relevan$ in#i"a$ions *-non@relevan$ a""u)ula$ions o )agne$i" !ar$i"les. Ea"$ors $ha$inuen"e $he re8uire# el# s$reng$h in"lu#e $he sie6 sha!e an#

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)a$erial !er)ea*ili$- o $he !ar$G $he $e"hni8ue o )agne$ia$ionG"oa$ingsG $he )e$ho# o !ar$i"le a!!li"a$ionG an# $he $-!e olo"a$ion o #is"on$inui$ies $o *e #e$e"$e#. >hen i$ is ne"essar- $overi- $he a#e8ua"- o )agne$i" el# s$reng$h6 i$ shall *e verie# *-using one or )ore o $he olloing $hree )e$ho#s.&ie@sha!e# %agne$i" !ar$i"le el# he in#i"a$ion shon in gure @H4.1.16 shall *e !osi$ione# on $he sura"e $o *e e(a)ine#6 su"h$ha$ $he "o!!er@!la$e# si#e is ala-s ro) $he ins!e"$e# sura"e. +sui$a*le el# s$reng$h is in#i"a$e# hen a "learl- #ene# line or

lines o )agne$i" !ar$i"les or)s a"ross $he "o!!er a"e oin#i"a$or hen $he )agne$i" !ar$i"les are a!!lie# si)ul$aneousl-i$h $he )agne$iing or"e. >hen a "learl- #ene# line o !ar$i"lesis no$ or)e#6 $he )agne$iing $e"hni8ue shall *e "hange# asnee#e#

5.0 S!R#ACE PREPARA$ION

5.1 he sura"e $o *e e(a)ine# an# all a#ja"en$ areas i$hin a$ leas$one in"h 25 ))

shall *e #r- an# ree o all #ir$6 grease6 lin$6 s"ale6 el#ing u( an#s!a$$er6 oil an#o$her e($raneous )a$$er $ha$ "oul# in$erere i$h $he e(a)ina$ion.

5.2 ,leaning )a- *e a""o)!lishe# using #e$ergen$s6 organi" solven$s6#es"aling solu$ions6 !ain$ re)over6 va!our #egreasing6 san# or gri$*las$ing or ul$rasoni" "leaning )e$ho#s.

5.3 he sura"e $o *e e(a)ine# )a- *e in $he as@el#e# as@rolle#6 as@"as$ or as@orge# "on#i$ion. Sura"e !re!ara$ion *- grin#ing6)a"hining or o$her sui$a*le )eans is ne"essar- $o resolve #ou*$ul

in#i"a$ions.

'.( NONMAGNETICSURACE CONTRAST EN!ANCEMENT

5.4.1 ?on)agne$i" sura"e "on$ras$ )a- *e a!!lie# *- a!!lie# *- $hee(a)iner $o un"oa$e# sura"e6 onl- in a)oun$s suF"ien$ $oenhan"e !ar$i"le "on$ras$ .>hen non)agne$i" sura"e "on$ras$enhan"e)en$ is use#6 i$ shall *e #e)ons$ra$e# $ha$ $he in#i"a$ions"an *e #e$e"$e# $hrough $he enhan"e)en$ Reer &ara 150a o+S%' Se"$ion V or gui#an"e or $he #e)ons$ra$ion re8uire#.

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hi"kness )easure)en$ o $his non)agne$i" sura"e "on$ras$enhan"e)en$ is no$ re8uire#.

H.0 $)PES O# #ERRO%A*NE$IC PAR$ICLES

H.1 'i$her #r- or e$6 non@uores"en$ !ar$i"les hi"h gives highes$"on$ras$ i$h $he !ar$ sura"e shall *e use# or $he e(a)ina$ion as

s!e"ie# in $he $a*le given *elo.

he #r- an# e$ !ar$i"les an# sus!ension vehi"les shoul# *e ina""or#an"e i$h S' @09.

6.1.1 o )ee$ $he re8uire)en$ o +S%' Se" V;;;6 Div 3 onl- e$ )agne$i"!ar$i"le )e$ho# shall *e use#.

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@Sl. ?o. %anua"$urer Bran# ,olour >e$/Dr-

?a)e@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@1 %agnau( -!e :+ Re# Dr-2. %agnau( -!e ?o.1 =re- Dr-3. %agnau( -!e 3+ Bla"k Dr-4. %agnau( 21Bla"k Bla"k >e$5. %agnau( 291 Re# Re# Bron >e$

H. %agnau( 9, Re# Re# Bron >e$ . Eerro"he) 14H,0 Re# Re# Bron >e$

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

+., $E%PERA$!RE O# PAR$ICLES & PAR$ S!R#ACE

H.2.1 he $e)!era$ure o $he !ar$ sura"e an# #r- or e$ !ar$i"lesus!ension shall no$e("ee# 125.HI E 52 I., or as re"o))en#e# *- $he )anua"$urer.

+l$erna$ivel-6 !ar$i"les )a- *e use# ou$si#e $he !ar$i"le )anua"$urersre"o))en#a$ions !rovi#e# $he !ro"e#ure is 8ualie# in a""or#an"e i$h +r$i"le16150 a$ $he

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!ro!ose# $e)!era$ure.

H.3 -E$ A$ CONCEN$RA$IONhe "on"en$ra$ion o !ar$i"les in e$ *a$h shall *e )easure# *-using "en$riuge $u*e Se$$ling es$6 100 )l sa)!le o e$ *a$hsus!ension shall *e !oure# in$o $he ,en$riuge $u*e a$er $horoughs$irring. Se$$ling $i)e o )ini)u) 30 )inu$es shall *e given *eore$aking $he rea#ing o $he se$$le# !ar$i"les "on"en$ra$ion. he"on"en$ra$ion o !ar$i"les shall *e *e$een 1.2 $o 2.4 )l !er 100 )l.

*a$h "on"en$ra$ion. >a$er "on#i$ioner )agnau( )ake shall *euse# henever re"o))en#e# *- $he )anua"$urer. he"on"en$ra$ion shall *e "he"ke# *eore ea"h use.

H.4 APPLICA$ION O# PAR$ICLES

H.4.1 he #r- !ar$i"les )a- *e a!!lie# *- #us$ing or *loing on $he !ar$sura"e. he e$ *a$h )a- *e a!!lie# on $he !ar$ sura"e *- !ouring ors!ra-ing.

.0 %E$OD O# E/A%INA$ION

.1. Beore $he )agne$i" !ar$i"le e(a)ina$ion is "on#u"$e# "he"k o $hee(a)ina$ion sura"e

shall *e "on#u"$e# $o lo"a$e an- #is"on$inui$- sura"e o!enings hi"h)a- no$ a$$ra"$ an#

hol# )agne$i" !ar$i"le *e"ause o $heir i#$hs.

.2 '(a)ina$ion shall *e !eror)e# on K+,K )o#e onl- unless o$herises!e"ie#.

;n"ase o +S%' Se" V;;;6 Div 3 +l$erna$ing +, "urren$ is !rohi*i$e#

.3 he e(a)ina$ion shall *e #one *- $he "on$inuous )e$ho# $ha$ is $he)agne$ising "urren$ re)ains LO?L hile $he e(a)ina$ion )e#ia is*eing a!!lie# an# hile e("ess o )e#ia *eing re)ove# hen #r-!ar$i"les are use#. he e("ess #r- !ar$i"les shall re)ove# *- ligh$air s$rea) or *ul* or s-ringe or o$her sour"e o lo !ressure #r- air.;n "ase o e$ !ar$i"les $he e$ *a$h shall *e s$o!!e# a$ $he ins$an$$he "urren$ is KO?K.

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.4 +ll areas $o *e e(a)ine# shall *e )agne$ie# in $o !er!en#i"ular#ire"$ions.

.5 Eiel# a#e8ua"- )a- *e "he"ke# *- !la"ing $he Eiel# ;n#i"a$or on $hesura"e $o *e e(a)ine#. he )a(i)u) !ole s!a"ing !er)i$$e# #uringe(a)ina$ion shall *e

200)) )a(i)u) an# $he !ole s!a"ing less $han 2 in"hes shall *eavoi#e#.

:.0 E/A%INA$ION CO0ERA*E

:.1 +ll e(a)ina$ions shall *e "on#u"$e# i$h 50M overla! $o assure 100M"overage a$ $he re8uire# sensi$ivi$-.

9.0 IN$ERPRE$A$ION

9.1 >i$h nonuores"en$ visi*le !ar$i"les6 $he e(a)ina$ion is !eror)e#using visi*le ligh$. %ini)u) ligh$ in$ensi$- o 100@oo$ "an#les1000Cu( is re8uire# $o ensure a#e8ua$e sensi$ivi$- #uring $he

e(a)ina$ion an# evalua$ion o in#i"a$ions. o ensure a*ovevisi*le ligh$ in$ensi$- on $he sura"e o $he !ar$ un#ere(a)ina$ion6H0@a$$/220V ele"$ri" *ul* shall *e use# a$ a )a(i)u) #is$an"e o: in"hes200 )) ro) $he !ar$ sura"e or 40 a$$/24V ele"$ri" *ul*shall *e use# a$ a )a(i)u) #is$an"e o 5 in"hes 125 )) ro)$he !ar$ sura"e or 100 a$$/24V ele"$ri" *ul* shall *e use# a$ a)a(i)u) #is$an"e o 10 in"hes 250 )) ro) $he !ar$ sura"e.he ligh$ sour"e6 $e"hni8ue an# ligh$ level veri"a$ion is re8uire# $o*e #e)ons$ra$e# one $i)e6 #o"u)en$e#6 an# )ain$aine# on le.

10.0 E0AL!A$ION O# INDICA$IONS

10.1 %e"hani"al #is"on$inui$ies a$ $he sura"e ill *e in#i"a$e# *- $here$en$ion o

$he e(a)ina$ion )e#iu). +ll in#i"a$ions are no$ ne"essaril- #ee"$s6hoever6 sin"e "er$ain )e$allurgi"al #is"on$inui$ies an# )agne$i"!er)ea*ili$- varia$ions )a- !ro#u"e si)ilar in#i"a$ions hi"hare no$ relevan$ $o $he #e$e"$ion o una""e!$a*le #is"on$inui$ies.

10.2 +n- in#i"a$ion hi"h is *elieve# $o *e nonrelevan$ shall *eree(a)ine# $o veri- he$her or no$ a"$ual #ee"$s are !resen$. Sura"e

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"on#i$ioning )a- !re"e#e $he ree(a)ina$ion. ?onrelevan$in#i"a$ions hi"h oul# )ask in#i"a$ions o #ee"$s are una""e!$a*le.+n- 8ues$iona*le or #ou*$ul in#i"a$ions shall *e ree(a)ine# $o

#e$er)ine he$her or no$ $he- are relevan$.

10.3 Relevan$ in#i"a$ions are $hose hi"h resul$ ro) una""e!$a*le)e"hani"al #is"on$inui$ies an# hi"h have an- #i)ension grea$er$han 1/1HN 1.5 )). Roun#e# in#i"a$ions are $hose in#i"a$ions hi"h are "ir"ular or

elli!$i"al i$h $he leng$h less $han or e8ual $o $hree $i)es $he i#$h. Cinearin#i"a$ions are $hose in#i"a$ions in hi"h $he leng$h is )ore $han $hree $i)es $he i#$h.

10.4 +n in#i"a$ion o $he #is"on$inui$- )a- *e larger $han $he #is"on$inui$-$ha$ "auses i$6 hoever6 $he sie o $he in#i"a$ion an# no$ $he sie o $he#is"on$inui$- is $he *asis o a""e!$an"e or reje"$ion. Onl- in#i"a$ionshi"h have an- #i)ension grea$er $han 1/1H in"h 1.5)) shall *e"onsi#ere# relevan$.

11.0 ACCEP$ANCE S$ANDARDS

11.1 he in$er!re$a$ion an# a""e!$an"e o in#i"a$ions shall *e as !er $hea!!li"a*le "o#e o "ons$ru"$ion6 s!e"i"a$ion an# #raing.

11.2 Eolloing a""e!$an"e s$an#ar#s shall a!!l- unless o$herise s!e"ie#+ll linear in#i"a$ion is one having a leng$h grea$er $han $hree $i)es $he

i#$h a+ll sura"es $o *e e(a)ine# shall *e ree o1 Relevan$ linear in#i"a$ionsG2 Relevan$ roun#e# in#i"a$ions i$h #i)ensions grea$er $han 3/1H

in"h 5.0 )).3 Eour or )ore relevan$ roun#e# in#i"a$ions in a line se!ara$e#*-1/1H in"h

1.5)) or less e#ge $o e#ge.,ra"k like in#i"a$ion #e$e"$e# 6 irres!e"$ive o sura"e "on#i$ion areuna""e!$a*le.4 +n in#i"a$ion o an i)!ere"$ion )a- *e larger $han $hei)!ere"$ion $ha$ "auses i$. oever6 $he sie o $he in#i"a$ion is$he *asis or a""e!$an"e evalua$ion.

11.3 REPAIRS

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11.3.1 Re!airs shall *e "arrie# ou$ *- grin#ing or gouging $o soun# )e$alan# re@e(a)ina$ionshall *e "arrie# ou$ $o ensure "o)!le$e re)oval o #ee"$. Re!air shall *e"arrie# ou$ using a!!rove# !ro"e#ure.

11.3.2 Re!aire# !or$ions shall *e re@e(a)ine# as re8uire# *- $he,o#e/S!e"i"a$ion.

11.4 DOC!%EN$A$ION

RECORDIN* O# INDICA$IONS

11.4.1 ?on reje"$a*le in#i"a$ions ?onreje"$a*le in#i"a$ions shall *ere"or#e# as s!e"ie# *- $he reeren"ing ,o#e Se"$ion.11..2 Re8eca,+e indicaions : Re8eca,+e 7ndicaions s*a++ ,e recorded as a &ini&u&' *e

4%e of indicaions +inear or rounded;' +ocaion and e

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13.1 &os$ e(a)ina$ion "leaning $o re)ove $he erro)agne$i" !ar$i"les

ei$her #r- or e$6 shall *e !eror)e# as soon as !ra"$i"al using a!ro"ess $ha$ #oes no$ a#versel- ae"$ $he !ar$.

13.2 Anless o$herise s!e"ie# one o $he olloing !os$ @ e(a)ina$ion"leaning $e"hni8ues shall *e e)!lo-e# i !os$ e(a)ina$ion "leaning isre8uire#.

i he use o "o)!resse# air $o *lo o unan$e# #r- )agne$i"!ar$i"les.

ii Dr-ing o $he e$ !ar$i"les an# su*se8uen$ re)oval *-*rushing or i$h "o)!resse# air.

iii Re)oval o e$ !ar$i"les *- ushing i$h solven$.iv ,leaning *- "lo$h / "o$$on.

RE"!IRE%EN$S O# A %A*NE$IC PAR$ICLE E/A%INA$ION PROCED!RE

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1$able 23

Sr.No.

Re45ire6ent Essential0ariables

Nonessential0ariables

Proced5reRe7erence Cla5seNo.

1 %agne$ising $e"hni8ue P ,l.1.1

2 %agne$ising "urren$ $-!e ora)!erage ou$si#e ranges!e"ie# *- $his ar$i"le or as!reviousl- 8ualie#.

P ,l. .2

3 Sura"e !re!ara$ion P ,l. 5.04 %agne$i" !ar$i"les

uores"en$/visi*le6 "olour6!ar$i"le sie6 e$/#r-

P ,l. H.0

5 %e$ho# o !ar$i"le a!!li"a$ion P ,l.H.4

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7/24/2019 Gdj Qa Mt 3 Rev 11

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NDE Procedure

Procedure

No.: GDJ/QC/MT-3

Page 12 of 12


Yoke Technique.

Revision : 11

Process Equipment


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Gdj Qa Mt 3 Rev 11

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