ASME 8 UCS- 56, Table UCS – 56 P-No 1, group 1 and 2 material PWHT, Note (1).
ASME 8 UCS- 56, Table UCS – 56 P-No 1, group 1 and 2 material PWHT, Note (1).
(OP)
ASME 8 UCS- 56, Table UCS – 56 P-No 1, group 1 and 2 material PWHT, Note (1). When or under what circumstance does the wording “impractical” permit the use of table 56.1 for lower temp PWHT in production of a PQR?
Regards,
Jon
Regards,
Jon





RE: ASME 8 UCS- 56, Table UCS – 56 P-No 1, group 1 and 2 material PWHT, Note (1).
RE: ASME 8 UCS- 56, Table UCS – 56 P-No 1, group 1 and 2 material PWHT, Note (1).
RE: ASME 8 UCS- 56, Table UCS – 56 P-No 1, group 1 and 2 material PWHT, Note (1).
For example utilization of an up to date certified older electric furnace with cyle time programming controls, recording chart, and manual heating controls which may provide some variation in PWHT temps within the time limits of table 56.1. based on weld thickness. The question is presented relative to PWHT of product, and PQR coupon, material and welding requirement include charpy testing.
RE: ASME 8 UCS- 56, Table UCS – 56 P-No 1, group 1 and 2 material PWHT, Note (1).
No, Table UCS 56.1 would not apply for the example cited above.