UHA-51(c) Thermal Treatment
UHA-51(c) Thermal Treatment
(OP)
A vessel shell is to be fabricated from 316H material and will operate at a temperature of approximately 1200 deg-F. Is the operating temperature of 1200 deg-F considered a "thermal treatment" per UHA-51(c)? If so, then impact testing of the base metal, HAZ and welding procedure qualification would be required.
If impact testing is required, how do you simulate the service conditions (i.e. 1200 deg-F over years of service and dozens of thermal cycles) for the base metal, HAZ and WPQ?
- ERob
If impact testing is required, how do you simulate the service conditions (i.e. 1200 deg-F over years of service and dozens of thermal cycles) for the base metal, HAZ and WPQ?
- ERob





RE: UHA-51(c) Thermal Treatment
NO.
RE: UHA-51(c) Thermal Treatment
Is there a code case or other reference you can point to that clarifies the term "thermal treatment" as used in UHA-51 (other than Endnote 82)?
- ERob
RE: UHA-51(c) Thermal Treatment
RE: UHA-51(c) Thermal Treatment