2. duties & responsibilities

8/20/2019 2. Duties & Responsibilities

1/19

Copyright © 2004, TWI Ltd World Centre for Materials Joining

TWICSWIP 3.1WIS 5

WELDI ! I SPECTI"

D#TIES "$ T%E WELDI !I SPECT"&SECTI" 1


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D#TIES "$ T%E WELDI !I SPECT"&

• Good eye sightGood eye sight

• Good literacy and numeracyGood literacy and numeracy

• IntegrityIntegrity

PE !"#$L C%$ $CTE I!TIC!PE !"#$L C%$ $CTE I!TIC!E&'I E( ") T%E W*I*E&'I E( ") T%E W*I*


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When to carry out inspections+When to carry out inspections+

%o to carry out inspections+%o to carry out inspections+

What e-uipment ill .e needed+What e-uipment ill .e needed+

What is the -uality o/ elding re-uired+What is the -uality o/ elding re-uired+

%o to interpret the code or standard%o to interpret the code or standardre-uirements+re-uirements+

'IS#(L I SPECTI"

I)*ortant things to consider I)*ortant things to consider


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What are the D+ties of the WeldingWhat are the D+ties of the WeldingIns*ector,Ins*ector,

e/ore eldinge/ore elding

(uring elding(uring elding

$/ter elding$/ter elding


5/19



• $ccess to all rele1ant documentation$ccess to all rele1ant documentation WP!, WP& , dra ings, speci cations, etcWP!, WP& , dra ings, speci cations, etc• 3aterials Grade, condition, si5e3aterials Grade, condition, si5e• Consuma.les Type, condition,si5eConsuma.les Type, condition,si5e• Welder -uali cationWelder -uali cation• E-uipment certi ed here necessaryE-uipment certi ed here necessary• Preheat ma6imum, minimumPreheat ma6imum, minimum• Weld preparationsWeld preparations• )it up /or elding7 8oint cleanliness root /ace,)it up /or elding7 8oint cleanliness root /ace,

.e1el angle, root gap, alignment.e1el angle, root gap, alignment• !a/ety!a/ety

-efore Welding-efore Welding


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J"I T $IT #P

(rg+a ly the )ost i)*ortant d+ty of (rg+a ly the )ost i)*ortant d+ty ofthetheWelding Ins*ector.Welding Ins*ector.

I/ 8oint t up isI/ 8oint t up isgood then thegood then the

completed eld illcompleted eld ill.e good*.e good*

Stresses uniform throughout the jointStresses uniform throughout the joint


7/19Copyright © 2004, TWI Ltd World Centre for Materials Joining


• Will alter the stress pattern, soWill alter the stress pattern, soeld ill not .e as designedeld ill not .e as designed

• Could introduce stress raisers,Could introduce stress raisers,/atigue li/e may a9ected/atigue li/e may a9ected

• Will ma:e the eld more di;cultWill ma:e the eld more di;cultto produceto produce

• Will a9ect eld -ualityWill a9ect eld -uality• Could a9ect o1erall dimensionsCould a9ect o1erall dimensions• Will a9ect producti1ityWill a9ect producti1ity

Incorrect 8oint t up



J"I T $IT #P

(rg+a ly the )ost i)*ortant d+ty of (rg+a ly the )ost i)*ortant d+ty ofthetheWelding Ins*ector.Welding Ins*ector.I/ 8oint t up is poorI/ 8oint t up is poor

then the completedthen the completed

eld ill .e pooreld ill .e poor

Uneven stresses acting on the weldUneven stresses acting on the weld




• Chec: amperage, 1oltage, tra1el speedChec: amperage, 1oltage, tra1el speed polaritypolarity• Chec: elding techni-ue eld directionChec: elding techni-ue eld direction•

Chec: elding timeChec: elding time• Ensure ade-uate interpass cleaningEnsure ade-uate interpass cleaning• Chec: interpass temperatureChec: interpass temperature• Correct consuma.lesCorrect consuma.les• Chec: root pass here access permitsChec: root pass here access permits• Chec: .ac: gouging here applica.leChec: .ac: gouging here applica.le

D+ring WeldingD+ring Welding




• Ensure post eld cleaningEnsure post eld cleaning• =isual inspect eld /or de/ects=isual inspect eld /or de/ects• =isual chec: /or arc stri:es=isual chec: /or arc stri:es•

Chec: eld dimensions contour, idthChec: eld dimensions contour, idth• Ensure 8oint is co1ered to slo coolingEnsure 8oint is co1ered to slo cooling

raterate• Inspect>monitor PW%T here applica.leInspect>monitor PW%T here applica.le•

Chec: #(T reportsChec: #(T reports• 3ar: up repair areas here applica.le3ar: up repair areas here applica.le• eport on the eld>/a.ricationeport on the eld>/a.rication

(fter Welding (fter Welding




• emem.er the a.o1e points /oremem.er the a.o1e points /orthe compulsory -uestion in thethe compulsory -uestion in the

e6aminatione6amination• 'se the handout to relate some o/'se the handout to relate some o/

thethe duties to your nominatedduties to your nominated

standard*standard*

!'33$ ?*!'33$ ?*



QUESTIONS ?QUESTIONS ?




Descri e one d+ty of the WeldingDescri e one d+ty of the WeldingIns*ector,Ins*ector,

E)" E WEL(I#G





(' I#G WEL(I#G(' I#G WEL(I#G





$)TE WEL(I#G$)TE WEL(I#G



(etail(etail

3aterial3aterial

WP!@sWP!@s

Welding E-uipmentWelding E-uipment

Edge PreparationsEdge Preparations

WeldersWelders

Welding Consuma.lesWelding Consuma.les

$ction A (ocument e/erence$ction A (ocument e/erence

in accordance ith dra ing>WP!in accordance ith dra ing>WP!identi ed A can .e traced to rele1ant test certi catesidenti ed A can .e traced to rele1ant test certi cates

in suita.le condition Bto good or:manship standardin suita.le condition Bto good or:manship standard

are appro1ed and a1aila.le to elders BA inspectorsare appro1ed and a1aila.le to elders BA inspectors

are applica.le to the 8oints to .e eldedare applica.le to the 8oints to .e elded

is cali.ratedis cali.rated /or 0alidated/or 0alidated

are in accordance ith WP! BA dra ingsare in accordance ith WP! BA dra ings

are on an appro1al list B/or the 8oints they ill eldare on an appro1al list B/or the 8oints they ill eld

appro1al certi cates are 1alid B@in date@appro1al certi cates are 1alid B@in date@

are in accordance ith WP!are in accordance ith WP!

are .eing stored A handled in accordance ith Procedureare .eing stored A handled in accordance ith Procedure

-efore Welding Co))ences-efore Welding Co))ences



(etail(etail

oint )it ups oint )it ups

Weld )acesWeld )aces

Preheat Bi/ anyPreheat Bi/ any

ProcessBesProcessBes

$ction A (ocument e/erence$ction A (ocument e/erence

$re in accordance ith WP! > (ra ing*$re in accordance ith WP! > (ra ing*tac: elds are to good or:manshiptac: elds are to good or:manshipstandardstandard

$re /ree /rom damage A clean to a good$re /ree /rom damage A clean to a goodor:manship standardor:manship standard

Is in accordance ith WP!Is in accordance ith WP!

Is in accordance ith WP!Is in accordance ith WP!

-efore Welding Co))ences-efore Welding Co))ences



D+ring Welding

!ite or shop elding!ite or shop eldingWP! at the or: placeWP! at the or: placeWelding processWelding process3aintenance o/ preheat3aintenance o/ preheat

Correct parametersCorrect parametersInter run cleanlinessInter run cleanlinessInterpass temperatureInterpass temperatureConsuma.les A controlConsuma.les A control

Welder Identi cationWelder Identi cationoot runoot run

Grinding or GougingGrinding or Gouging(istortion(istortion

Weather conditionsWeather conditions$pplica.le to or: piece$pplica.le to or: piece$s per WP!$s per WP!$s per WP!$s per WP!

$s per WP!$s per WP!Good or:manshipGood or:manship

$s per WP!$s per WP!

$s per WP! A good$s per WP! A goodconditioncondition$ppro1ed to the code$ppro1ed to the codeClean A goodClean A good

or:manshipor:manshipClean A goodClean A good


19/19C ight © 2004 TWI Ltd World Centre for Materials Joining

Weld Identi cationWeld Identi cation

=isual inspection A=isual inspection Arecordsrecords

(imensional !ur1ey(imensional !ur1ey$s .uilt dra ings$s .uilt dra ings#(E#(E

epairsepairs

PW%TPW%T)inal testing)inal testingCleaning, painting,Cleaning, painting,preser1ation A pac:ingpreser1ation A pac:ing)inal documentation)inal documentation

(fter WeldingWeld Identi cation A elder I(Weld Identi cation A elder I(

is mar:ed on the or: pieceis mar:ed on the or: piece

=isual inspect A sur/ace=isual inspect A sur/acesuita.le /or any #(T methodssuita.le /or any #(T methodsusedused

Chec: si5es to dra ingChec: si5es to dra ing'p date as .uilt dra ings'p date as .uilt dra ings#(E is completed A reports#(E is completed A reportssignedsigned

3onitor against procedure3onitor against procedure3onitor against procedure3onitor against procedure3onitor, Load or pressure tests3onitor, Load or pressure testsCleaning, painting,Cleaning, painting,preser1ation A pac:ing as perpreser1ation A pac:ing as perprocedureprocedure

2. duties & responsibilities

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