ASME Sec.8- fig. UCS-66.2
ASME Sec.8- fig. UCS-66.2
(OP)
In regards to calculating the coldest recommended metal temperature during hydrostatic test, I am not able to interpret the general note (6) given for fig.UCS-66.2. It does refer to UG-99(h)which is clear, but the basis for arriving at 17 deg from Fig-UCS-66.1 is not clear. Could somebody please explain with a simple example showing calculations.





RE: ASME Sec.8- fig. UCS-66.2
RE: ASME Sec.8- fig. UCS-66.2
RE: ASME Sec.8- fig. UCS-66.2
Thread292-116022
RE: ASME Sec.8- fig. UCS-66.2
RE: ASME Sec.8- fig. UCS-66.2
RE: ASME Sec.8- fig. UCS-66.2
"....the basis for arriving at 17 deg from Fig-UCS-66.1 is not clear."
The 17C (30F) does not come from UCS-66.1. Its a margin to be added to the MAWP calculated from UCS-66.1.
As to why 30F ? Its a safety factor established from experience. It is not calculated, its just a rule. There are many other Code requirements based on rules rather than analysis.