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CSWIP 3.2 Test 2:
Q. 1/30: You notice from your records you don’t have an inspection report for a component that has undergone a PWHT. In this case what would your course of action be?
It would be acceptable, If the component had a full inspection report before PWHT
The TWI Specification makes no reference of this, so you would have to seek advice
It is a requirement that all components undergo full inspection after a PWHT process has been conducted; in this case it would not be acceptable
As long as no welding has be conducted after the PWHT process, this would be acceptable
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Q 1/30
Test Progress : 3.33%
Q. 2/30: Within the range of variables in a welding procedure, DC+ has been stated for the root pass.
This would allow the use of DC- also
This would allow the use of AC also
In accordance with the Specification, any polarity could now be used
In accordance with the specification only DC+ can be used
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Q 2/30
Test Progress : 6.67%
Q. 3/30: Using the TWI specification, which of the following is true for welder qualifications?
Plate and pipe require separate qualifications
Plate qualifies pipe
Pipe qualifies plate
It depends on whether it is fillet weld or butt weld
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Q 3/30
Test Progress : 10.00%
Q. 4/30: Which of the following NDT test is specified for all types of Stainless steel welds?
Visual
Radiographic
Dye penetrant
All options are correct
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Q 4/30
Test Progress : 13.33%
Q. 5/30: If a welding current of 145A was used on the test plate during qualification, on the actual job while using this procedure, the maximum current permitted is?
175A
125A
166A
200A
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Q 5/30
Test Progress : 16.67%
Q. 6/30: With respect to the validity of using a procedure in different positions, which one of the following is acceptable?
Procedure is always valid only for the position tested
Procedure is always valid for all the positions when impacts are specified
Procedure qualified in vertical up position qualifies for that position only when impacts are specified
Procedure is valid for all positions only for butt welds when impacts are specified
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Q 6/30
Test Progress : 20.00%
Q. 7/30: If a welder tests on a plate thickness of 14 mm, he is qualified to weld which of the following thicknesses?
14 mm
5-14 mm
5-28 mm
14 mm and above
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Q 7/30
Test Progress : 23.33%
Q. 8/30: For qualifying a welder for butt welding austenitic stainless steels, 14 mm thick plate, using the TIG process, which of the following tests are not required?
Fillet fracture
Macro examination
Hardness tests
All of the above
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Q 8/30
Test Progress : 26.67%
Q. 9/30: Which one of the following changes does not require re-qualification of a welder?
Change from PF to PG
Change from fillet to butt
Change from pipe to plate
Change from rutile to low hydrogen consumable
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Q 9/30
Test Progress : 30.00%
Q. 10/30: Which one of the following is true?
Cellulosic qualifies rutile types also
PG qualifies PG only
The addition of a backing strip requires qualification
Change from argon to carbon dioxide
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Q 10/30
Test Progress : 33.33%
Q. 11/30: If a welder fails a qualification test due to lack of skill, how many are allowed?
One
Two
No retests are allowed
No limit for retests
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Q 11/30
Test Progress : 36.67%
Q. 12/30: What is the arc energy using process 121 when the parameters are 24V-225A-250mm per minute ?
1.3 KJ/mm
1.04KJ/mm
0.57KJ/mm
3.2KJ/mm
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Q 12/30
Test Progress : 40.00%
Q. 13/30: The heat input for the TIG welding process usingparameters 20V-125A-50mm per minute will be?
2.42KJ/mm
1.02KJ/mm
1.80 KJ/mm
0.8KJ/mm
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Q 13/30
Test Progress : 43.33%
Q. 14/30: Using the preheat tables in the TWI specification, when welding C-Mn steels having a carbon equivalent of 0.38 and section combined thickness of 25 mm using MMA process with hydrogen scale C and a preheat of 125C with 22V-150A, Which welding speed falls w
68mm/min
72mm/min
74mm/min
80mm/min
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Q 14/30
Test Progress : 46.67%
Q. 15/30: When welding C-Mn steels, having a carbon equivalent of 0.40 and ombined section thickness of 102 mm, using a preheat of 50C with MMA process with parameters 24V-100 mm per min. From those listed which is the maximum current permitted?
276A
372A
555A
434A
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Q 15/30
Test Progress : 50.00%
Q. 16/30: Which of the following is true?
a. For a lower heat nput, higher preheats are required
For the same material, the heat input increases with decreasing hydrogen levels
As preheat increases, the heat input increases
A higher heat input cannot eliminate preheat
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Q 16/30
Test Progress : 53.33%
Q. 17/30: Which of the following materials have specific restrictions on heat input?
Q&T steels
Duplex stainless steels
Aluminium
All of the above options are correct
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Q 17/30
Test Progress : 56.67%
Q. 18/30: Using TIG process for welding 4043 aluminium alloy having a thickness of 4.2 mm, which of the following parameters will be acceptable?
20V, 25mm/min, 18A
20V, 25mm/min, 13A
21V, 25mm/min, 30A
20V, 25mm/min, 9A
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Q 18/30
Test Progress : 60.00%
Q. 19/30: When welding A514 grade material having a thickness of 15 mm, using a preheat of 100C, with the MMA process, which of the following parameters can be acceptable?
24V-210A-200mm/min
20V-210A-200mm/mi
24V-210A-150mm/min
25V-250A-200mm/min
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Q 19/30
Test Progress : 63.33%
Q. 20/30: When welding duplex stainless steels, having 23.5% Chromium, using the TIG process, for a plate thickness of 12 mm, the heat input will be dependent on?
The carbon content
The preheat used
Combined plate thickness
None of the above
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Q 20/30
Test Progress : 66.67%
Q. 21/30: When welding 75mm Q&T steels with a maximum preheat of 100C, the minimum heat input is restricted to
2.5KJ/mm
3.2KJ/mm
4.8KJ/mm
5.0KJ/mm
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Q 21/30
Test Progress : 70.00%
Q. 22/30: Residual stresses would play a major part in which of the following
HICC and brittle fracture
Lamellar tearing and solidification cracking
Fatigue and ductile failure
Chevron cracking and hot cracking
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Q 22/30
Test Progress : 73.33%
Q. 23/30: Which of the following conditions would cause the greatest amount of distortion on this type of fabricated structure?
A highly restrained joint during welding
A joint, which is free to move during welding
A joint, which would be subjected to the lowest heat input
2 options are correct
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Q 23/30
Test Progress : 76.67%
Q. 24/30: Which combination of factors will increase the level of distortion?
High Rm, high thermal conductivity and low coefficient of expansion
Low Re, low thermal conductivity and high coefficient of expansion
High yield, high UTS and low coefficient of expansion
Low percentage Z, High percentage of Sulphur and Phosphorous
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Q 24/30
Test Progress : 80.00%
Q. 25/30: The fabrication contains materials of varying Re values, generally which of the following would you expect to distort the most without control methods in place?
Welded joints made from the highest Re value materials
Welded joints made from the lowest Re value materials
Welded joints that contain the highest residual stress
2 options are correct
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Q 25/30
Test Progress : 83.33%
Q. 26/30: Part of the fabrication contains a joint made from C/Mn steel welded to a 316L steel. Which of the following best applies when considering distortion?
The C/Mn steel side of the joint will distort the`most due to high thermal expansion
The C/Mn steel side of the joint will distort the most due to low thermal conductivity
The 316L side of the joint will distort the most due to high thermal onductivity
The 316L side of the joint will distort the most due to low thermal onductivity
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Q 26/30
Test Progress : 86.67%
Q. 27/30: Which of the following are factors affecting distortion?
Parent material properties
Joint design/amount of restraint
Heat input/welding sequence
All options are correct
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Q 27/30
Test Progress : 90.00%
Q. 28/30: The fabricator approaches you on the best way to reduce distortion. The joint configuration, welding process, material type can’t be changed. Which of the following could be applied to reduce distortion?
Increase restraint and minimize the amount of weld beads deposited, heavier weld beads
Reduce restraint and minimize the amount of weld beads deposited, heavier weld beads
Increase restraint and maximize the amount of weld beads deposited, lighter weld beads
Reduce restraint and increase the amount of weld beads deposited, heavier weld beads
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Q 28/30
Test Progress : 93.33%
Q. 29/30: Which of the following thickness and joint configurations would you expect to produce the highest amount of distortion?
25.5mm single V butt
50mm single U butt
50mm double U butt
25.5mm single J butt
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Q 29/30
Test Progress : 96.67%
Q. 30/30: After welding it is a requirement to conduct a`PWHT on certain welded joints. On this welded structure what is the main purpose of this heat treatment?
Normalising the material to increase the UTS value for the welded structure
For hydrogen release, especially if a E8016 electrodes had been used for the welding of the joint.
For stress relieving the welded joint
To anneal and temper the weld metal
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Q 30/30
Test Progress : 100.00%
Q. 31/30: One of your inspectors asks you what would a typical PWHT temperature be, when applied to this fabrication. Which of the following would be the correct answer when taking into account the material thickness range stated on a C/Mn to C/Mn steel welded join
Approximately 50°C above the upper critical limit of the material stated
Between 600°C to 650°C
Approximately 100°C lower than the lower critical limit of the material stated
2 options are correct
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Q 31/30
Test Progress : 103.33%
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