24B-Pactical Pipe Inspection 2006

CSWIP 3.1 Welding Inspection

Practical Pipe Inspection TWI Training & Examination Services Course Reference WIS 5 Course notes section reference 23

Pipe Inspection

Hi – Low & Root gap Measurements 1 2 3 4

5

Root gap dimension

6

ni S O LI H

s o pr u P el g

e g u a G g ni dl e W e

Internal alignment

Pipe Inspection Examination Remember in the CSWIP 3.1 Welding Inspectors examination your are required to conduct a practical examination of a pipe test weld, complete a thumb print sketch and a final report on your findings 

Time allowed 1 hour and 45 minutes



Use your own code i.e. API 1104

Pipe Inspection Points 1) Use a pencil for the arrow lines, but make all written comments and measurements in ink only 2) Report everything that you can observe 3) Do not forget to compare and sentence your  report 4) Do not forget to date & sign your report 5) Make any observations, such as recommendations for further investigation for  crack-like imperfections. World Centre for Materials Joining Technology

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Pipe Inspection Examination After you have observed an imperfection and determined its type, you must be able to take measurements and complete the thumb print report sketch The first thumb print report sketch should be in the form of a repair map of the weld. (i.e. All observations are Identified Sized and Located) The thumb print report sketch used in CSWIP exam will look like the following example.

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Pipe final Inspection Report  After you have completed your thumb print report report sketch of your test pipe the next step is to complete your final report again the report must be completed in ink (no pencil). The report must be completed to your thumb print sketch, do not leave any boxes empty, every box must be completed or dashed out. You must also make any comments you feel are necessary regarding any defects observed. The report form used in CSWIP will look like the following example. World Centre for Materials Joining Technology

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Lack of side wall fusion 0 4 1

     A 0 2

5 1

Lack of side wall fusion

0 9

0 1

Undercut

>1.0 mm Cap height : 4mm. Weld width: 12-14mm NOTES:

Toe blend: Poor. Misalignment (HI-LO): 1mm Spatter or scale on the pipe surface

Slag 0 2 1

     C 

5 1

8

yt n le P C I .r 0 M 8 6 ] 1 Under fill 4 s l at i p a c k 3 c f ol o 1 B[ e : g e a m P a N

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

: s s e c or p g ni dl e W

PI P : E erut L a P ng M iS A WELD FACE X E C I

s e n k ic ht & ai D e di ts u O

e ki r t S c r A

Under fill

4

     B01 1 I P A : d e s u n oi t a ci fi c e p S/ e d o C

     D

A P/ t al F : n oi ti s o p g ni dl e W

8 9

2 1

0 4

     C  0 6

Slag 5 inclusion Cap height : 3mm. Weld width: 12-14mm Toe blend: Poor. Misalignment(HI-LO): e ki 2mm r t Spatter or scale on the pipe surface Lack of side S c wall fusion r 8 3

8

5 2

A

     A

Cap height : 5mm. Weld width: 12-14mm Toe blend: Poor. Misalignment(HI-LO): 1mm Spatter or scale on the pipe surface

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PIPE ROOT FACE Lack of root fusion 0 4 1

Burn through

8

     B

     A 0 2

5 1

Lack of root penetration

NOTES:

0 9

0 8 1

0 1

Undercut

0 4

6

     C  0 6

6 Excess 4

Poor stop 5 start

penetration 5mm

>1.0 mm

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

Penetration height : 3mm. Misalignment (HI-LO): 2mm Spatter on the pipe surface Lack of root fusion

     D

     C  0 2 1

8 3

8

     A

0 2 1

Smooth Undercut