CSWIP 3.1 Multiple Choice Paper 2

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  1. Who should have access to the WPS?
  • NDT operators
  • Inspectors only
  • Welders only
  • Welders and inspectors
  1. How do we determine what the correct weld preparation (root gap, root face, included angle) should be?
  • By consulting the WPSs
  • The fabrication drawing will give all the information
  • The welder will decide
  • The inspector will recommend what is suitable
  1. How are the length of tack welds during assembly and fit-up determined?
  • By the welder as they have extensive knowledge
  • The fabrication specification will give minimum tack length requirements
  • The fabrication drawing will give all the information
  • Any length of tack weld will do for assembly
  1. Is it always necessary to preheat the base material before welding?
  • Not on sunny day
  • Only in accordance with the WPS
  • If the equipment is available it must be used
  • If using cellulosic rods these will provide enough heat
  1. Which of the following would not be required to be checked before welding?
  • The welding consumables
  • The weld root gap
  • PWHT temperature range
  • The weld preparation
  1. What does the term WPS mean?
  • Weld productivity specification
  • Welding production scheme
  • Welding Procedure Specifications
  • Work Productivity standards
  1. Which EN standard is used for the basic requirements for visual inspection?
  • BS EN 17637
  • API 1104
  • BS EN 7079
  • BS EN 4515
  1. Who is responsibilities for site safety?
  • Site engineer
  • Welding supervisor
  • An approved inspector
  • Everyone
  1. Is it permissible to allow welding to be carried out in bad weather?
  • Never
  • Yes as long as there is adequate protection from the poor weather conditions
  • Yes a long as basic low hydrogen welding electrodes are used
  • Yes as long as the welder is prepared to work in the rain
  1. Who has the responsibility of ensuring the welder is using the correct consumables during fabrication?
  • The Q/A department
  • Store man and the welder
  • Welding Engineering
  • The welder and the welding inspector
  1. When would you measure the interpass temperature?
  • The highest temperature recorded in the welded joint immediately prior to depositing the next run
  • Immediately prior to commencing the first pass
  • When the welding is complete
  • Only required if the heat input is lower than that specified in WPS
  1. During root welding, which if the following would be the main cause of burn through?
  • The current is too high
  • The root gap is too small in accordance with WPS
  • Preheat not used
  • Root face is too large
  1. You notice the welders are adjusting the current on the welding set, is the allowable?
  • Never
  • The welder has the final say on voltage and current
  • Only if the current is within the range recorded on the WPS
  • As long as the welder has approval from the welding foreman
  1. What course of action should be taken upon finding a welder using incorrect welding consumables?
  • Report the incident and record all relevant information
  • Allow welding to proceed if the workmanship is good
  • None if the tensile strength of the consumable is the same as the approved one
  • Change the electrode for the correct type and continue welding
  1. What is the maximum OCV allowable to initiate an arc when using AC current?
  • 1000V
  • 10V
  • 90V
  • 900V
  1. Why is the OCV capped at the voltage setting?
  • To save electricity
  • To prevent exploding of consumables
  • Allow smooth transition into welding voltage range
  • To reduce the risk of fatality
  1. What information should be recorded as a minimum, on completed production weld?
  • Size and type of electrode used
  • Welding supervisor’s name
  • Welder’s identification, date and weld number
  • Welding inspector name
  1. What is meant by the term PWHT?
  • Pipe weld heat treatment
  • Pre weld heat treatment
  • Post weld hydrogen tearing
  • Post weld heat treatment
  1. Why would visual inspection of the excess weld metal at the bottom of a cross country pipeline be important?
  • It is the most difficult area to weld
  • It is the dirtiest part of the pipe as it is near the ground
  • Welders always forget to weld the bottom
  • It is the most difficult area to radiograph
  1. Who has the final responsibility of sentencing and accepting a weld on completion?
  • The contractor’s inspector
  • Site manager
  • The welder
  • The client’s inspector or certifying authority
  1. Why is it essential to clean the excess weld metal on completion of the production weld?
  • So it can be ready for painting
  • To remove any rust
  • To ensure it is suitably clean for visual inspection and NDT
  • To remove slag from the undercut
  1. To assess the surface of a weld for direct inspection, the distance from the surface to the eye should be maximum of?
  • 200mm
  • 600mm
  • 60mm
  • 6000mm
  1. Who should select the specific welds for NDT, to cover the 10% contractual percentage required by the specification/code?
  • Anyone can select the welds as its just a random choice
  • The welder as he knows which welds are likely to produce the least defects
  • This will be referenced in the inspection and test plan
  • Nobody, as welding is always carried out to a high standard the use of the percentage NDT is of no real value
  1. In a welding procedure transverse joint tensile test the following observation were made. The specimen CSA was recorded as 25mm x 12mm and the maximum load applied was recorded as 150kN. What is the UTS?
  • 50kN/mm2
  • 5500N/mm2
  • 500N/mm2
  • 50N/mm2
  1. In a transverse weld tensile test, if the break was in the weld metal, the sample would be:
  • Rejected
  • Retested
  • Acceptable if the UTS is equal to or greater than the specified UTS of the plate
  • Acceptable if the UTS is between 80-90% of specified UTS of the plate
  1. In an all weld tensile test, the original specimen gauge length was 50mm, and after the test the increased gauge length was 60mm, what is the elongation percentage?
  • %A is 50
  • A is 20
  • %A is 29
  • %A is 36
  1. Some codes require the excess weld metal (weld cap) on cross weld joint tensile specimens to be flush, this is because:
  • Flushed caps will always break in the weld metal area
  • This is to remove any porosity in the excess weld metal (weld cap)
  • It is easier to calculate the cross sectional area of the joint when flushed
  • Flushed caps have fewer stress raisers and therefore give a more accurate result
  1. In welder qualification testing of 20mm plates, why are side bends used instead of root and face bends?
  • They are easier to produce
  • The testing equipment can not handle thick root/face bends
  • Root defects are not important for welder qualification
  • They give more accurate indications
  1. Mechanical tests are divided in two areas, identify these from the list below:

When examining a completed bend test, the angle of the bend was found to be 175 degree. The testing specification calls for the sample to have been formed through 180 degree.

  • The bends should be considered as failed
  • They should be bent to 180 degree re-examined
  • They should be acceptable as the reduction in angle is due to material spring back
  • They should be rejected as the angle is not close enough to be acceptable.
  1. Charpy testing is carried out on a welding procedure test plate because?
  • It gives an indication of the through thickness ductility (in the Z direction)
  • The impact test results can be used to verify that the material has not been adversely affected by the heat of the welding
  • It give an indication of the materials elongation properties
  • It give a quick indication of the weld quality for welder qualification test.

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3 Likes
  1. Some codes require the excess weld metal (weld cap) on cross weld joint tensile specimens to be flush, this is because:

suppose this the answer:
Flushed caps have fewer stress raisers and therefore give a more accurate result

1 Like

Tensile test: flush cap for purpose calculation of elongation. My answer will be C.
Bend test: flush cap for purpose reduce stress at toe weld and ap hight.