Candidates Name : MR. JOHN BLUE Specification : TRAINING 5
Candidates Signature : MR. JOHN BLUE Welding Prcocess : MMA
Welding Position : PA
A
B
18 176 190 245 L=28, D=1 L=22, D=1,5 L=7 L=13 L=50, D=0,5 L:6*W:4= 24mm2 L=11, D=0,5 105 L=6, W=4 Ø=1 236 Porosity Note : 100Intermittent spatter of the plate
Notes : Excess Weld Metal : Linear Misalignment : Toe Blend : Weld Width :
Cap undercut Intermittent smooth Cap Undercut sharp Hard Stamping L=43, W=10
Visual Inspection Plate Report Training Sample 5 Weld Face
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5 2 Poor 19 Incomplete filled groove + Cap undercutCap undercut
sharp Slag Inclusion
Incomplete filled groove +Lack of sidewall fusion
A
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112 73 193 Ø=16 L=16, D=1,5 Ø=1,5 213 Note :Light grinding mark throughout the plate
Notes : Penetration Height : Toe Blend : Weld Width :
Edited By : Sharul Rohaizad Mohamad Darus
Crater pipe
Visual Inspection Plate Report Training Sample 5 Weld Root
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3,5 Poor 15 Root undercut And also have burn through that has been repaired (notIncluded) Mechanical damage Ø=1 Lack of root fusion
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MC Plate TR5. Rev 2. Date: 15-11-11
CSWIP 3.1 Training Question for Plate Sample Training 5
Answer all 20 questions on the seperate candidate answer sheet provided. Your answers to be marked with an X in the appropriate box. Your acceptance criteria is to be based on the requirement of TWI Code 02
Name : MR.JOHN BLUE Signature MR.JOHN BLUE Date : 09 JULY 2012
The Weld Face.
1. What is the maximum excess weld metal to be found on your sample and would you accept or reject your finding ?
a) < 1,5 mm b) > 5,0 mm c) 4,0 mm to 5,0 mm d) 2,5 mm e) Accept f) Reject
2. With regards to the surface profile, which of the following comments best matches your assessment and would you accept or reject your finding ?
a) Toe blend generally good
b) Good toe blend and surface profile c) Poor toe blend with good surface profile
d) Poor toe blend and poor surface profile
e) Accept
f) Reject
3. With reference to incomplete filled groove which of the following best matches your findings. Would you accept or reject your findings ?
a) No incomplete filled groove visually detected
b) Length 30,0 mm to 40 mm associated with lack of sidewall fusion
c) Length < 15 mm associated with lack of sidewall fusion d) Length < 15 mm not associated with lack of sidewall fusion e) Accept
f) Reject
4. With reference to slag inclusions, which of the following best matches your assessment of the total accumulative length and would you accept or reject your finding ?
a) 25 mm to 30 mm in length b) > 15 mm in length
c) < 10 mm
d) No slag inclusion visible
e) Accept
2 of 5 5. With reference to cap undercut, which of the following best matches your findings and
would you aceept or reject your finding ? a) Accumulative length > 50 mm, all sharp
b) Accumulative length > 50 mm both smooth and sharp
c) Accumulative length < 50 mm all smooth d) No cap undercut visible
e) Accept
f) Reject
6. With reference to cap undercut, which of the following best matches your findings and would you accept or reject your finding ?
a) Maximum Depth < 0,5 mm b) Maximum depth > 2,0 mm
c) Maximum depth 1,5 mm
d) No cap undercut visually detected e) Accept
f) Reject
7. With reference to surface porosity, what is the maximum single pore size and would you accept or reject your finding ?
a) Ø > 3 mm one area
b) Ø < 2,0 mm numerous areas
c) Ø < 0,5 mm one area
d) No porosity visually detected e) Accept
f) Reject
8. Regarding your samples parent material, which of the following best matches your findings and would you accept or reject ?
a) One Arc strike visible b) Two arc strikes visible c) Three arc strikes visible
d) No arc strikes visible
e) Accept
f) Reject
9. With reference to cracking which of the following best matches your findings and would you accept or reject your findings ?
a) Longitudinal crack 10 to 12 mm in length b) Longitudinal crack < 5 mm in length c) Transvere crack < 5 mm in length
d) No crack visible e) Accept
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MC Plate TR5. Rev 2. Date: 15-11-11
10. With reference mechanical damage, which of the following best matches your assessment and would you accept and reject your findings ?
a) No mechanical damage visible
b) Hard stamping and light grinding visible
c) Heavy grinding throughout
d) Chipping marks and heavy grinding throughout
e) Accept
f) Reject
The Weld Root
11. With reference to lack of root fusion, which of the following best matches your assessment of the total accumulative length and is it acceptable or rejectable ?
a) > 22 mm
b) 15 mm to 19 mm
c) < 5 mm
d) None visually detected
e) Accept
f) Reject
12. With reference to plate misalignment which of the following best matches your visual assessment of the plate sample ?
a) > 2,5 mm
b) < 1,5 mm c) < 0,5 mm
d) None of the above e) Accept
f) Reject
13. With reference to excessive root penetration which of the following best matches your assessment of the highest individual point measured and would you accept or reject your findings ? a) 5,0 mm b) Flush root c) < 4 mm d) < 2,5 mm e) Accept f) Reject
14. With reference to parent material condition which of the following best matches your assessment and would you accept or reject the parent material condition ?
a) Light grinding throughout
b) Mechanical damage plus tack weld visible
c) The parent material condition is generally clean throughout d) Heavy mechanical damage in excess of 2 mm in depth e) Accept
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f) Reject
15. With reference to the collapse of the root resulting in a burn through, which of the following best matches your findings and would you accept or reject your findings ? a) One visible < 7 mm in diameter
b) No burn through visible
c) One visible > 12 in diameter
d) Two visible not exceeding 12 mm in diamteter
e) Accept
f) Reject
16. With reference to root concavity which of the following best matches your findings and would you accept or reject your findings ?
a) 48 mm to 51 mm accumulative length, < 1 mm depth b) < 10 mm, 2 mm depth
c) One area 65 mm to 69 mm in length, < 1 mm depth
d) No root concavity visible e) Accept
f) Reject
17. With reference to root cracking which of the following best matches your findings and would you accept or reject the observed defect ?
a) No crack visible
b) One crater crack visible
c) One longitudinal crack visible < 5 mm in length
d) Crater pipe/shrinkage visible, recommend MT/PT inspection
e) Accept
f) Reject
18. With reference to lack of root penetration which of the following best matches your findings and would you accept or reject your findings ?
a) 17 mm to 21 mm in total length
b) No lack of root penetration visually detected
c) 11 mm to 13 mm in length d) None of the above
e) Accept
f) Reject
19. With reference to root undercut which of the following best matches your findings and would you accept or reject your findings ?
a) Accumulative length 6 mm to 10 mm
b) Accumulative length 15 mm to 20 mm
c) No root undercut visible d) None of the above e) Accept
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MC Plate TR5. Rev 2. Date: 15-11-11
f) Reject
20. Your overall assessment of the weld sample is : a) Accept
Training Acceptance Levels for Plate, Pipe and Macro
D = depth L = length H = height t = thickness
Ta b le N u mbe r Def ec t Ty p e
Acceptance Levels Plate and Pipe
Acceptance Levels Macro onlyRemarks Maximum allowance Remarks
1 Excess weld
metal
At no point shall the excess weld metal fall below the outside surface of the parent material. All
weld runs shall blend smoothly
Excess weld metal will not exceed H = 3mm in any area on the parent material, showing
smooth transition at the weld toes.
As for plate and pipe
2 Slag/silica
inclusions
Slag inclusion are defined as non-metallic inclusions trapped in the weld metal or between the weld metal and the parent material.
The length of the slag inclusion shall not exceed 20mm continuous or intermittent. Accumulative totals shall not exceed 50mm
Slag not permitted
3 Undercut
Undercut is defined as a groove melted into the parent metal,at
the toes of the weld excess metal, root or adjacent weld
metal.
No sharp indications smooth blend required. The length of any undercut shall
not exceed 20mm continuous or intermittent. Accumulative total shall not exceed 50mm. Max D = 2mm for the cap of
weld metal.
Root undercut not permitted
No sharp indications smooth blend required
4 Porosity or
Gas Cavities
Trapped gas, in weld metal, elongated, individual pores, cluster porosity, piping or
wormhole porosity.
Individual pores ≤ 1mm max. Cluster porosity maximum 20mm total area. Elongated, piping or wormholes 15mm max.
L continuous or intermittent.
Cluster porosity not permitted. Individual pores acceptable, max
3 indications 5 Cracks or
laminations
Transvere, longitudinal, star or
crater cracks. Not permitted Not permitted
6 Lack of fusion
Incomplete fusion between the weld metal and base material, incomplete fusion between weld
metal. (lack of inter-run fusion)
Surface breaking lack of side wall fusion, lack of inter-run fusion continuous or
intermittent not exceed 35mm. Accumulative totals not exceed 35mm over
a 300mm length of weld
Not permitted
7 Arc strikes
Damage to the parent material or weld metal, from an unintentional touch down of the
electrode or arcing from poor connections in the welding
circuit.
Only 1 permitted Not permitted
8 Mechanical
damage
Damage to the parent material or weld metal, internal or external
resulting from any activities
Parent material must be smoothly blended Max. D = 2mm
Only 1 location allowed No stray tack welds permitted
Not permitted
9 Misalignment Mismatch between the welded or
unwelded joint. Max H = 2mm As for plate and Pipe 10 Penetration
Excess weld metal, above the base material in the root of the
joint
Max H ≤ 2mm As for plate and Pipe
11 Lack of root
penetration
The absence of weld metal in the
root area Not permitted Not permitted 12 Lack of root
fusion
Inadequate cross penetration of both root faces.
Lack of root fusion, not to exceed 30mm
total continuous or accumulative. Not permitted 13 Burn through Excessive penetration, collapse of
the weld root Not permitted Not permitted 14 Angular
distortion
Distortion due to weld
contraction 3mm max. Plate only Accept 15
Root shrinkage or root concavity
Irregularities in the root profile due to shrinkage and contraction
of the weld metal.
35mm maximum length
2mm maximum depth Accept