ASME VIII Div.1 is used for the vessel design. If the MDMT is colder than -29 DegC and warmer than -46 DegC, Low Temperature Carbon Steel is selected, for example, SA516-70N.
My questions:
(1) Is impact test required when MDMT colder than -29 DegC? Or dependS on UCS-66? (In ASME VIII Div.1...
weldtek,
If I change the PQR and WPS base metals as follow:
PQR: P1-Group 2 TO P1-Group 2
WPS: P1-Group 1 TO P1-Group 2
Can I use this PQR to support the WPS (Impact test required)?
thanks
weldtek,
I found the following in ASME IX QW-403.5. Is it the same as what you mentioned dual certificate?
"In addition, when base metals of two different P-Number Group Number combinations are qualified using a single test coupon, that coupon qualifies the welding of those two P-Number Group...
Guys, please offer your suggestion.
Base metal in PQR: P1-Group 1 TO P1-Group 2
Base metal in WPS: P1-Group 2 TO P1-Group 2
Welding process: SMAW
Impact test is required.
Can I use the above mentionen PQR to support this WPS, if I use ASME IX?
For my understanding, in ASME IX, PQR base...
