Information Website for Boilers & Pressure Vessels
TOPIC: BPV Section VIII Division 1 – Section VIII-1, Overpressure Protection by System Design
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Question: Is it required by UG-140(b)(5) that the pressure in a credible overpressure scenario not exceed the lesser of 116% of the MAWP times the ratio of the allowable stress value at the temperature of the overpressure scenario the allowable stress value at the design temperature or the test pressure?
Yes.