UCS-56(d)(2)
UCS-56(d)(2)
(OP)
ASME Sec VIII Div. 1
Maximum rate of heating = 400 Deg.F
An item was PWHT to 800 deg. F then sat at 800F for 1 hr then increased to 1100F in a matter of 15 minutes, does this satisfy UCS-56(d), which states a maximum heating rate of 400F/hr above 800F?
Maximum rate of heating = 400 Deg.F
An item was PWHT to 800 deg. F then sat at 800F for 1 hr then increased to 1100F in a matter of 15 minutes, does this satisfy UCS-56(d), which states a maximum heating rate of 400F/hr above 800F?





RE: UCS-56(d)(2)
I'd say no, this was heated too fast.
RE: UCS-56(d)(2)
(2) Above 800°F (425°C), the rate79 of heating shall
be not more than 400°F/hr (222°C/h) divided by the maximum
metal thickness of the shell or head plate in inches,
but in no case more than 400°F/hr (222°C/h).
You can do the math.
RE: UCS-56(d)(2)