UCS-56 requires 1 hour per inch (25mm), 15 minutes minimum so if your vessel is 45mm thick, 15 minutes would NOT be acceptable since 45mm is obviously greater than 25mm your soak time would be closer to 2 hours.
I could not find the max soak time for PWHT.? for the vessel thck is 45 mm for P1 material. There is min. req. in ASME sec VIII, but not max? if it came to me with +30 minutes soaking time,is it accepteble?
Thanks for advice.
Aztec