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What is the working pressure of a 150 Ib. flange, SA 350 Gr.LF6 CL 1, used at 400°F?
What is the working pressure of a 150 Ib. flange, SA 350 Gr.LF6 CL 1, used at 400°F?A . 230 psig B. 200 psig C. 170 psig D. 140 psigView AnswerAnswer: B
What the MAWP is recalculated, the wall thickness used shall be the actual thickness minus:
What the MAWP is recalculated, the wall thickness used shall be the actual thickness minus:A . The estimated corrosion loss before the date of the next inspection B. Twice the estimated corrosion loss before the date of the next inspection C. Three times the estimated corrosion loss before the date...
What is the test pressure of a metallic piping system whose design temperature is above the test temperature using the following conditions? NPS 6, SA106 Gr.B, 100 psi / 800°F
What is the test pressure of a metallic piping system whose design temperature is above the test temperature using the following conditions? NPS 6, SA106 Gr.B, 100 psi / 800°FA . 150 psi B. 450 psi C. 278 psi D. Test temperature verses design temperatures are not differentView AnswerAnswer: C
A welder who tests on a ½” thick plate, groove weld in the 3G position is also qualified to weld in which other plate position?
A welder who tests on a ½” thick plate, groove weld in the 3G position is also qualified to weld in which other plate position?A . Vertical only B. Flat and horizontal C. Flat D. All plate positionsView AnswerAnswer: C
Is the attached PQR properly qualified?
Is the attached PQR properly qualified?A . No, because RT is not allowed during PQR qualification B. No, because there are not enough tensile tests C. No, because peening is allowed by ASME B31.3 D. YesView AnswerAnswer: B
Which of the following applies to socket welds in piping systems?
Which of the following applies to socket welds in piping systems?A . Should be avoided B. Should be used in all welded piping C. Should be welded using SAW only D. Should be avoided where crevice corrosion may occurView AnswerAnswer: D
What is MAWP if the next inspection is planned in 5 years?
A piping system that operates at a design pressure of 100 psi at 950? F was originally built from NPS 20 EFW (100% radiographed), ½” wall, A-516 Grade 70, A-671 material. During the last Inspection, the thickness was determined to be 0.370 inches. The records indicated the corrosion rate to...
The preheat zone shall extend beyond each edge of a pipe weld
The preheat zone shall extend beyond each edge of a pipe weldA . 1” B. 2” C. 2T D. 3TView AnswerAnswer: A
What is the maximum length allowed for individual slag trapped in a weld in a Severe Cyclic Conditions piping system?
What is the maximum length allowed for individual slag trapped in a weld in a Severe Cyclic Conditions piping system?A . >TW X 3 B. £TW / 3 C. ³12T D. 3/23”View AnswerAnswer: B
all suspect areas and areas of damaged insulation should be examined?
all suspect areas and areas of damaged insulation should be examined?A . 10% B. 33% C. 50% D. 100%View AnswerAnswer: A
