Clarification on IMPACT Test Requirements of asme B31.3
Clarification on IMPACT Test Requirements of asme B31.3
(OP)
Hi everyone
Reading ASME B31.3 and it's relevant paragraph was somehow clear to me about Impact testing Requirements but reading CASTI confused me. so:
1) If a Thickness specified for a PQR place above the relevant Curve in Fig 323.2.2A, but the upper qualified thickness of WPS;which due to asme b31.3 seams to be (T/2 to T +1/4"),Places in Combination of DMT below the relevant curve; is this WPS qualification range allowed or the upper limit shall be modified in a way that at most place on relevant curve ?
2)If for example we have a 9.5 mm Thickness of a material assigned to curve b of Table A-1 and DMT is -29 degrees of centigrade, then If our thickness range be 5-15 mm is it required to take Impact on PQR specimen ? or without Impact testing but thickness range of 5-12.7 mm shall be used ?
Best Regards
Siamak
Reading ASME B31.3 and it's relevant paragraph was somehow clear to me about Impact testing Requirements but reading CASTI confused me. so:
1) If a Thickness specified for a PQR place above the relevant Curve in Fig 323.2.2A, but the upper qualified thickness of WPS;which due to asme b31.3 seams to be (T/2 to T +1/4"),Places in Combination of DMT below the relevant curve; is this WPS qualification range allowed or the upper limit shall be modified in a way that at most place on relevant curve ?
2)If for example we have a 9.5 mm Thickness of a material assigned to curve b of Table A-1 and DMT is -29 degrees of centigrade, then If our thickness range be 5-15 mm is it required to take Impact on PQR specimen ? or without Impact testing but thickness range of 5-12.7 mm shall be used ?
Best Regards
Siamak




