Dear all, Request your kind clarification on the below subject. For Welding Procedure Qualification as per ASME SEC IX , with impact test and PWHT. 1) QW 407.2 states " The procedure qualification test shall be subjected to PWHT essentially equivalent to that encountered in the fabrication of production welds, including at least 80% of the aggregate times at temperature" Question: Can we use a PQR for a production weld, which has PWHT to be done for a shorter duration than that recorded in the PQR. (e.g. PQR qualifed at 620 degC for 120minutes and production requirement 620 degC for 100 minutes) 2) Please find attached file. regards lsk |
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