1.C.2 Self-test Questions set Q1 1) Which of these is true, when applied to normal class fluid service piping? a) At least 5% of all butt welds must be subjected to RT or UT b) In-process VT can be substituted for RT or UT on a weld for weld basis c)
At least 38mm of all longitudinal welds must be subjected to RT or UT
d) The Manufacturer will authorize replacement of RT or UT with VT 2) A longitudinal groove weld has been radiographed and contains incomplete penetration of 20mm in a 150mm length of weld. What action is required? a) None. This is acceptable under ASME B31.3 b) Determine the depth of incomplete penetration before sentencing it c)
Reject the weld, incomplete penetration is not permitted
d) Reject the weld, but ONLY for severe cyclic conditions 3) What would be the Usual extent of examination for butt welds in Normal Class fluid service piping? a) 100% VT and 100% RT or UT b) Random VT and 100% RT or UT c)
Random VT and random RT or UT
d) 100% VT and random RT or UT 4) A longitudinal groove weld in a 12mm thick pipe in Category D fluid service has been visually examined and has a reinforcement height of 5mm. What action is required? a) None. This is acceptable under ASME B31.3 b) Grind the reinforcement fully off and then accept it c)
Reduce the reinforcement height to a maximum of 3mm and then accept it
d) Reject the weld 5) A ‘Class 2’ piping system has a flush insert patch welded into it. The inspector scrutinizes the NDE report and determines that it has been tested by PT method in accordance with API 570 but only on the final weld run. What action should he take? a) Call for RT or UT of the final weld b) Call for 100% MT of the final weld run c)
Final closure butt welds will be 100% radiographic quality
d) No action. This is acceptable 6) Which NDE method will be specified for the detection of internal surface breaking planar flaws in a sealed pipe? a) MT b) PT c)
RT
d) UT
7) Which of the following statements is NOT relevant when it is impractical to perform a pressure test on a final closure weld joining new piping to the existing system? a) The new piping will be pressure tested b) MT or PT must be performed on the root pass and face of butt welds c)
Final closure butt welds must be 100% radiographic quality
d) The final closure weld must always be radiographed 8) What determines the extent of NDE carried out on a piping system before first use? a) The type of butt welds used b) The fluid class or loading conditions c)
The pressure test results
d) The nominal pipe size (NPS) 9) Substituting special procedures for a pressure test after an alteration or repair may be done a) After consultation with the inspector and piping engineer b) At the repair organizations discretion c)
Never-a pressure test is always required
d) Only with full penetration groove welds 10) What is the action to be taken if a spot or random RT examination on a sample reveals a weld defect? a) RT two additional samples of the same kind by the same welder b) Two additional samples of the same kind by the same welder c)
Immediately remove all similar welds from active service
