24B-Pactical Pipe Inspection 2006

Copyright © 2006, TWI LtdWorld Centre for Materials Joining Technology

CSWIP 3.1 Welding InspectionCSWIP 3.1 Welding Inspection

TWI Training & Examination TWI Training & Examination ServicesServices

Practical Pipe InspectionPractical Pipe Inspection

Course Reference WIS 5Course Reference WIS 5Course notes section reference 23


Pipe InspectionPipe Inspection


HI-

LO

S

ing

le P

urp

os

e W

eld

ing

Ga

ug

e

1

2

3

4

5

6 Root gap Root gap dimensiondimension

Internal Internal alignmentalignment

Hi – Low & Root gap Hi – Low & Root gap MeasurementsMeasurements


Remember in the CSWIP 3.1 Welding Inspectors Remember in the CSWIP 3.1 Welding Inspectors

examination your are required to conduct a practical examination your are required to conduct a practical

examination of a pipe test weld, complete a thumb examination of a pipe test weld, complete a thumb

print sketch and a final report on your findingsprint sketch and a final report on your findings

Time allowed 1 hour and 45 minutesTime allowed 1 hour and 45 minutes

Use your own code i.e. API 1104Use your own code i.e. API 1104

Pipe Inspection ExaminationPipe Inspection Examination


1)1) Use a pencil for the arrow lines, but make all Use a pencil for the arrow lines, but make all written comments and measurements in written comments and measurements in ink ink onlyonly

3)3) Do not forget to Do not forget to compare and sentencecompare and sentence your your reportreport

2) Report 2) Report everythingeverything that you can observe that you can observe

4) Do not forget to 4) Do not forget to date & signdate & sign your report your report

5)5) Make any observations, such as Make any observations, such as recommendations for further investigation for recommendations for further investigation for crack-like imperfections.crack-like imperfections.

Pipe Inspection PointsPipe Inspection Points


After you have observed an imperfection and After you have observed an imperfection and

determined its type, you must be able to take determined its type, you must be able to take

measurements and complete the thumb print report measurements and complete the thumb print report

sketchsketchThe first thumb print report sketch should be in the The first thumb print report sketch should be in the

form of a repair map of the weld. (i.e. form of a repair map of the weld. (i.e. AllAll

observations are Identified Sized and Located) observations are Identified Sized and Located)

The thumb print report sketch used in CSWIP exam The thumb print report sketch used in CSWIP exam

will look like the following example.will look like the following example.

Pipe Inspection ExaminationPipe Inspection Examination


After you have completed your thumb print report After you have completed your thumb print report

sketch of your test pipe the next step is to complete sketch of your test pipe the next step is to complete

your final report again the report must be your final report again the report must be completed in completed in

ink (no pencil).ink (no pencil).The report must be completed to your thumb print The report must be completed to your thumb print

sketch, do not leave any boxes empty, sketch, do not leave any boxes empty, every box must every box must

be completed or dashed outbe completed or dashed out. You must also make any . You must also make any

comments you feel are necessary regarding any comments you feel are necessary regarding any

defects observed.defects observed.

The report form used in CSWIP will look like the The report form used in CSWIP will look like the following example.following example.

Pipe final Inspection ReportPipe final Inspection Report


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22/08/2003

22/08/2003

WELD FACEWELD FACE

CCBB

AA

98

98

Arc

Str

ike

Arc

Str

ike

AADD

CC

20

20

15

15

Lack of side Lack of side wall fusion wall fusion

90

90

10

10

UndercutUndercut

>1.0 >1.0 mmmm

140

140

88


180

180

46

46

Under fill Under fill

40

40 12

12

Under fill Under fill

60

60

55Slag Slag inclusioninclusion

Cap height : 4mm. Weld width: 12-14mmCap height : 4mm. Weld width: 12-14mmToe blend: Poor. Misalignment (HI-LO): 1mmToe blend: Poor. Misalignment (HI-LO): 1mmSpatter or scale on the pipe surfaceSpatter or scale on the pipe surface

NOTES:NOTES:

Cap height : 3mm. Weld width: 12-14mmCap height : 3mm. Weld width: 12-14mmToe blend: Poor. Misalignment(HI-LO): Toe blend: Poor. Misalignment(HI-LO):

2mm2mmSpatter or scale on the pipe surfaceSpatter or scale on the pipe surface

Cap height : 4mm. Weld width: 12-14mmCap height : 4mm. Weld width: 12-14mmToe blend: Poor. Misalignment (HI-LO): 2mmToe blend: Poor. Misalignment (HI-LO): 2mmSpatter or scale on the pipe surfaceSpatter or scale on the pipe surface

Cap height : 5mm. Weld width: 12-14mmCap height : 5mm. Weld width: 12-14mmToe blend: Poor. Misalignment(HI-LO): Toe blend: Poor. Misalignment(HI-LO):

1mm1mmSpatter or scale on the pipe surfaceSpatter or scale on the pipe surface

120

120

15

15

SlagSlag

25

25

Arc

Str

ike

Arc

Str

ike

38

38

88



PIPE ROOT PIPE ROOT FACEFACE

CCBB

AA

AADD

CC

20

20

15

15

Lack of root Lack of root penetration penetration

90

90

10

10

UndercutUndercut

>1.0 >1.0 mmmm

140

140

88

Lack of root Lack of root fusion fusion

180

180

46

46

Excess Excess penetration penetration

5mm 5mm

40

40 66

Burn through Burn through

60

60

55Poor stop Poor stop startstart

Penetration height : 5mm. Penetration height : 5mm. Misalignment (HI-LO): 1mmMisalignment (HI-LO): 1mmScale on the pipe surfaceScale on the pipe surface

NOTES:NOTES: Penetration height : 3mm. Penetration height : 3mm. Misalignment (HI-LO): 2mmMisalignment (HI-LO): 2mmSpatter on the pipe surfaceSpatter on the pipe surface

Penetration height: 2mm.Penetration height: 2mm.Misalignment (HI-LO): 2mmMisalignment (HI-LO): 2mmSpatter on the pipe surfaceSpatter on the pipe surface

Penetration height: 3mm.Penetration height: 3mm.Misalignment (HI-LO): 1mmMisalignment (HI-LO): 1mmScale on the pipe surfaceScale on the pipe surface

120

120

120

120

Smooth Undercut Smooth Undercut <1.0mm<1.0mm

38

38

88

Lack of root Lack of root fusion fusion


I C PlentyI C Plenty

001001SPECIMEN NUMBERSPECIMEN NUMBER

AcceptAccept--------------------------------------------N/AN/ALongitudinal seams (PIPE)Longitudinal seams (PIPE)

AcceptAccept7.27.23mm3mm2mm2mmMisalignment (Linear)Misalignment (Linear)

AcceptAccept----------------------------------------------NONENONELaps/LaminationsLaps/Laminations

AcceptAccept----------------------------------------------NONENONEMechanical damageMechanical damage

Reject**Reject**Not specifiedNot specified------------------------30x2530x25Arc strikesArc strikes

AcceptAccept9.39.325mm25mm22mm22mmLack of fusionLack of fusion

Reject*Reject*9.3.109.3.10NONENONE40mm40mmCracks/Crack-like defectsCracks/Crack-like defects

AcceptAccept9.3.9.39.3.9.32mm 2mm 1.5mm 1.5mm Surface PorositySurface Porosity

RejectReject9.7.2 Table 49.7.2 Table 40.8mm0.8mm1.5mm depth1.5mm depthUndercutUndercut

RejectReject7.8.27.8.2NoneNone70mm long70mm longSlag InclusionsSlag Inclusions

AcceptAccept7.9.27.9.23mm3mmN/AN/AInadequate weld width (PIPE)Inadequate weld width (PIPE)

AcceptAccept7.8.27.8.2NoneNone22mm22mmIncomplete fillingIncomplete filling

RejectReject7.8.27.8.2SmoothSmoothPoor blendPoor blendExcess weld metal appearanceExcess weld metal appearance

7.8.27.8.2Excess weld metal heightExcess weld metal height

Accept/RejectAccept/Reject

55

Section/Section/Table NTable Noo

44

MaximumMaximumAllowanceAllowance

33

AccumulativeAccumulativeTotalTotal

22

Defect TypeDefect Type

Code or Specification ReferenceCode or Specification ReferenceDefects NotedDefects NotedEXTERNAL DEFECTSEXTERNAL DEFECTS

PRINT FULL NAMEPRINT FULL NAME

4mm4mm 1.6mm1.6mm RejectReject

Pipe final Inspection ReportPipe final Inspection Report


SignatureSignature I C PlentyI C Plenty Date Date 22nd August 22nd August 20032003*Delete which is not applicable. *Delete which is not applicable. Use the other side for any comments.Use the other side for any comments.

This *pipe/plate has been examined to the requirements of code/specification API This *pipe/plate has been examined to the requirements of code/specification API 1104.................1104.................and is accepted/rejected accordingly.and is accepted/rejected accordingly.

Comments:Comments:** Request MPI testing.Request MPI testing.**** Recommend arc strikes are ground flush prior to MPI testing for cracks.Recommend arc strikes are ground flush prior to MPI testing for cracks.*** Radiography Required *** Radiography Required

AcceptAccept--------------------------------------------NONENONELaps/LaminationsLaps/Laminations

RejectReject9.3.9.39.3.9.32mm 2mm 1.5mm 1.5mm PorosityPorosity

RejectReject7.8.27.8.2NoneNone70mm long70mm longSlag inclusionsSlag inclusions

AcceptAccept9.3.109.3.10------------------------NONENONECracks/Crack-like defectsCracks/Crack-like defects

AcceptAccept9.3.119.3.110.8mm0.8mm0.5mm0.5mmRoot UndercutRoot Undercut

See Notes ***See Notes ***9.3.69.3.61mm1mm2mm depth2mm depthRoot ConcavityRoot Concavity

AcceptAccept9.3.49.3.425mm25mm20mm20mmLack of Root FusionLack of Root Fusion

AcceptAccept9.3.19.3.125mm25mm50mm50mmIncomplete Root PenetrationIncomplete Root Penetration

AcceptAcceptNot specifiedNot specified------------------------4mm4mmExcessive Root PenetrationExcessive Root Penetration

AcceptAccept7.27.23mm3mm2mm2mmMisalignmentMisalignment

Accept/RejectAccept/Reject

55

Section/Section/Table NTable Noo

44

MaximumMaximumAllowanceAllowance

33

AccumulativeAccumulativeTotalTotal

22

Defect TypeDefect Type

Code or Specification ReferenceCode or Specification ReferenceDefects NotedDefects NotedEXTERNAL DEFECTSEXTERNAL DEFECTS

Pipe final Inspection Report RootPipe final Inspection Report Root


Reinforcement Height: 7.8.2

page 20

Reinforcement Appear: 7.8.2

page 20

Incomplete groove: 7.8.2 page 20

Inadequate weld width: 7.8.2

page 20

Slag inclusions: 7.8.2 page

20

Undercut: 9.3.11

page 24

Porosity: 9.3.9

page 24

Cracks: 9.3.10

page 24

Lack of fusion: 9.3.4

page 22

Arc strikes/arc burns: A.5.3

page 55

Mechanical damage: Not

referenced

Lamination: Not

referenced

Misalignment: 7.2 page 19

Longitudinal seams: Not referenced

Excess penetration: Not referenced

Lack of penetration: 9.3.1/9.3.2 page 21

Lack of root fusion: 9.3.4 page 22

Concave root: 9.3.6 page 22

Burn through: 9.3.7 page 22

Pipe Code API 1104Pipe Code API 1104


Any QuestionsAny Questions

??

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24B-Pactical Pipe Inspection 2006