• No results found

TWI Training CSWIP 3.1 Plate

N/A
N/A
Protected

Academic year: 2021

Share "TWI Training CSWIP 3.1 Plate"

Copied!
8
0
0

Loading.... (view fulltext now)

Full text

(1)

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 : 100

Intermittent 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

M

ea

su

re f

ro

m this datu

m o

nly

5 2 Poor 19 Incomplete filled groove + Cap undercut

Cap undercut

sharp Slag Inclusion

Incomplete filled groove +Lack of sidewall fusion

(2)

A

B

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

M

ea

su

re f

ro

m this datu

m o

nly

3,5 Poor 15 Root undercut And also have burn through that has been repaired (not

Included) Mechanical damage Ø=1 Lack of root fusion

(3)

1 of 5

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

(4)

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

(5)

3 of 5

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

(6)

4 of 5

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

(7)

5 of 5

MC Plate TR5. Rev 2. Date: 15-11-11

f) Reject

20. Your overall assessment of the weld sample is : a) Accept

(8)

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 only

Remarks 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

References

Related documents

The main predictions look at the level of identification that charity street donation collectors have with their job role (e.g., no ID, uniform/t-shirt, ID badge, and

Raghu Vira was the fi rst Indian to create scholarships for the foreign students to come to India and study at the International Academy of Indian Culture.. Foreign universities

Furthermore, while symbolic execution systems often avoid reasoning precisely about symbolic memory accesses (e.g., access- ing a symbolic offset in an array), C OMMUTER ’s test

This comprehensive medical aesthetic training course is designed to prepare physicians, physician assistants and nurses to safely deliver both cosmetic injectable and

Key policy drivers (IOM Health Professions Education: A Bridge to Quality (2003); Lancet Commission (Frenk et al., 2010), Framework for Action on Interprofessional Education

What are the driving factors leading companies to request sales tax outsourcing services:. • Complexity of returns at the local level of tax (County

In the initial project period we identified the requirements and opportunities in the realm of data reduction. The premise for data reduction in COSMOS is that the IoT