9.Practical Pipe

Copyright © 2005, TWI Ltd World Centre for Materials Joining TechnologyWorld Centre for Materials Joining Technology

TWICSWIP 3.1

WIS 5 WELDING INSPECTION

PRACTICAL VISUAL INSPECTION OF PIPE

WELDS

TWICSWIP 3.1

WIS 5 WELDING INSPECTION

PRACTICAL VISUAL INSPECTION OF PIPE

WELDS



Page 1 of 3 Page 1 of 3 EXAMPLE PIPE REPORTEXAMPLE PIPE REPORT Name: [Block capitals] Name: [Block capitals] Mr. I C PlentyMr. I C Plenty Signature: Signature: I C PlentyI C Plenty Test piece ident Test piece ident : : 001001

Code/Specification used: Code/Specification used: API 1104API 1104 Welding process: Welding process: MMA/SMAWMMA/SMAW Joint type: Joint type: Single V Butt Single V Butt

Welding position: Welding position: Flat /PAFlat /PA Outside Dia & thickness Outside Dia & thickness 300mm x 10 mm 300mm x 10 mm Date Date 22/08/200322/08/2003

WELD FACEWELD FACE

CCBBAA

AADDCC

20201515

Lack of side Lack of side wall fusion wall fusion

90901010

UndercutUndercut

>1.0 >1.0 mmmm

140140 88

Lack of side Lack of side wall fusion wall fusion

1801804646

Under fill Under fill

4040 1212

Under fill Under fill

606055

Slag Slag inclusioninclusion

Excess weld height : 4mm. Weld width: 12-14mmExcess weld height : 4mm. Weld width: 12-14mmToe blend: Poor. Misalignment : 1mmToe blend: Poor. Misalignment : 1mmSpatter or scale on the pipe surfaceSpatter or scale on the pipe surface

NOTES:NOTES:

Excess weld height : 3mm. Weld width: 12-14mmExcess weld height : 3mm. Weld width: 12-14mmToe blend: Poor. Misalignment: 2mmToe blend: Poor. Misalignment: 2mmSpatter or scale on the pipe surfaceSpatter or scale on the pipe surface

Excess weld height : 4mm. Weld width: 12-14mmExcess weld height : 4mm. Weld width: 12-14mmToe blend: Poor. Misalignment : 2mmToe blend: Poor. Misalignment : 2mmSpatter or scale on the pipe surfaceSpatter or scale on the pipe surface

Excess weld height : 5mm. Weld width: 12-Excess weld height : 5mm. Weld width: 12-14mm14mm

Toe blend: Poor. Misalignment: 1mmToe blend: Poor. Misalignment: 1mmSpatter or scale on the pipe surfaceSpatter or scale on the pipe surface

1201201515

SlagSlag

3838 88

Lack of side Lack of side wall fusion wall fusion Mechanical Mechanical

DamageDamage

Arc strikeArc strike

9988

3030


PIPE ROOT PIPE ROOT FACEFACE

CCBBAA

AADDCC

20201515

Lack of root Lack of root penetration penetration

90901010

Root Root UndercutUndercut

>1.0 >1.0 mmmm

140140 88

Lack of root Lack of root fusion fusion

1801804646

Excess Excess penetration penetration

5mm 5mm

4040 66

Burn through Burn through

606055

Poor stop Poor stop startstart

Penetration height : 5mm. Penetration height : 5mm. Toe blend: PoorToe blend: PoorMisalignment : 1mmMisalignment : 1mmScale on the pipe surfaceScale on the pipe surface

NOTES:NOTES: Penetration height : 3mm. Penetration height : 3mm. Misalignment : 2mmMisalignment : 2mmSpatter on the pipe surfaceSpatter on the pipe surface

Penetration height: 2mm.Penetration height: 2mm.Misalignment : 2mmMisalignment : 2mmSpatter on the pipe surfaceSpatter on the pipe surface

Penetration height: 3mm.Penetration height: 3mm.Misalignment : 1mmMisalignment : 1mmScale on the pipe surfaceScale on the pipe surface

120120120120

Root Undercut Root Undercut <1.0mm<1.0mm

3838 88

Lack of root Lack of root fusion fusion


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

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

2) 2) Report everythingeverything that you can observe

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

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

Pipe Inspection Points


I C PlentyI C Plenty

001001

EXAMPLE WELD INSPECTION REPORT/SENTENCE EXAMPLE WELD INSPECTION REPORT/SENTENCE SHEETSHEET

SPECIMEN NUMBERSPECIMEN NUMBER

EXTERNAL DEFECTSEXTERNAL DEFECTS Defects NotedDefects Noted Code or Specification ReferenceCode or Specification Reference

Defect TypeDefect Type Pipe/Plate Pipe/Plate SectionSection

11

AccumulativeAccumulativeTotalTotal

22

MaximumMaximumAllowanceAllowance

33

Section/Section/Table NTable Noo

44

Accept/RejectAccept/Reject

55

Excess weld metal heightExcess weld metal height 7.8.27.8.2

Excess weld metal appearanceExcess weld metal appearance A-AA-A Poor blendPoor blend SmoothSmooth 7.8.27.8.2 RejectReject

Incomplete fillingIncomplete filling A-AA-A 22mm22mm NoneNone 7.8.27.8.2 AcceptAccept

Inadequate weld width (PIPE)Inadequate weld width (PIPE) A-AA-A N/AN/A 3mm3mm 7.9.27.9.2 AcceptAccept

Slag InclusionsSlag Inclusions A-AA-A 70mm long70mm long NoneNone 7.8.27.8.2 RejectReject

UndercutUndercut A-AA-A 1.5mm depth1.5mm depth 0.8mm0.8mm 9.7.2 Table 49.7.2 Table 4 RejectReject

Surface PorositySurface Porosity A-AA-A 1.5mm 1.5mm 2mm 2mm 9.3.9.39.3.9.3 AcceptAccept

Cracks/Crack-like defectsCracks/Crack-like defects A-AA-A 40mm40mm NONENONE 9.3.109.3.10 Reject*Reject*

Lack of fusionLack of fusion A-AA-A 22mm22mm 25mm25mm 9.39.3 AcceptAccept

Arc strikesArc strikes A-AA-A 30x2530x25 ------------------------ Not specifiedNot specified Reject**Reject**

Mechanical damageMechanical damage A-AA-A NONENONE ------------------------ ---------------------- AcceptAccept

Laps/LaminationsLaps/Laminations A-AA-A NONENONE ------------------------ ---------------------- AcceptAccept

Misalignment (Linear)Misalignment (Linear) A-AA-A 2mm2mm 3mm3mm 7.27.2 AcceptAccept

Longitudinal seams (PIPE)Longitudinal seams (PIPE) A-AA-A N/AN/A ------------------------ -------------------- AcceptAccept

PRINT FULL NAMEPRINT FULL NAME

A-AA-A 4mm4mm 1.6mm1.6mm RejectReject


Signature......................................................... Signature......................................................... Date.....................................................................................Date.....................................................................................*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.

22nd August 200322nd August 2003I C PlentyI C Plenty

MisalignmentMisalignment A-AA-A 2mm2mm 3mm3mm 7.27.2 AcceptAccept

Excessive Root PenetrationExcessive Root Penetration A-AA-A 4mm4mm ------------------------ Not Not specifiedspecified

AcceptAccept

Incomplete Root PenetrationIncomplete Root Penetration A-AA-A 50mm50mm 25mm25mm 9.3.19.3.1 AcceptAccept

Lack of Root FusionLack of Root Fusion A-AA-A 20mm20mm 25mm25mm 9.3.49.3.4 AcceptAccept

Root ConcavityRoot Concavity A-AA-A 2mm depth2mm depth 1mm1mm 9.3.69.3.6 See Notes ***See Notes ***

Root UndercutRoot Undercut A-AA-A 0.5mm0.5mm 0.8mm0.8mm 9.3.119.3.11 AcceptAccept

Cracks/Crack-like defectsCracks/Crack-like defects A-AA-A NONENONE ------------------------ 9.3.109.3.10 AcceptAccept

Slag inclusionsSlag inclusions A-AA-A 70mm long70mm long NoneNone 7.8.27.8.2 RejectReject

PorosityPorosity A-AA-A 1.5mm 1.5mm 2mm 2mm 9.3.9.39.3.9.3 RejectReject

Laps/LaminationsLaps/Laminations A-AA-A NONENONE ------------------------ -------------------- AcceptAccept

Root DefectsRoot Defects

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

Accept/RejectAccept/Reject

55

Section/Section/Table NTable Noo

44

MaximumMaximumAllowanceAllowance

33

AccumulativeAccumulativeTotalTotal

22

Pipe/Plate Pipe/Plate SectionSection

11

Defect TypeDefect Type

Code or Specification ReferenceCode or Specification ReferenceDefects NotedDefects NotedEXTERNAL DEFECTSEXTERNAL DEFECTS


REMEMBER!REMEMBER!

TERMINOLOGY:TERMINOLOGY:Use standard terms. Use standard terms. Do not use abbreviations. Do not use abbreviations.

ACCURACY:ACCURACY:All dimensions in millimetres. All dimensions in millimetres. No need to scale. No need to scale. Measurements to be as accurate as Measurements to be as accurate as possible.possible.PRESENTATION:PRESENTATION:Sketch to be as neat as possible. Sketch to be as neat as possible. The key to passing the The key to passing the examination.examination.


PRACTICAL PIPE.PRACTICAL PIPE.

QUESTIONS ?


HI-L

O S

ingl

e Pu

rpos

e W

eldi

ng G

auge

1

2

3

4

5

6

Root gap dimension

Internal alignment


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: 9.3.8 page 22

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 1104

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9.Practical Pipe