Exceeding B31.3 hydrostatic test pressure
Exceeding B31.3 hydrostatic test pressure
(OP)
We have 304L SS piping systems with a low design pressure (dictated by installed components at 400 psig). Nominal hydrostatic test pressure is ~ 600 psig (testing in accordance with paragraph 345).
Pressure surges caused by valve operation resulted in pressure exceeding 600 psig, but resultant stresses are still well below yield stress. Can the system still be considered "qualified" if hydrostatic test pressure was exceeded (see paragraph 302.2.4(e)?
Pressure surges caused by valve operation resulted in pressure exceeding 600 psig, but resultant stresses are still well below yield stress. Can the system still be considered "qualified" if hydrostatic test pressure was exceeded (see paragraph 302.2.4(e)?





RE: Exceeding B31.3 hydrostatic test pressure
The paragraph 302.2.24(e) says the pressure surges shall not exceed the test pressure. Which part of this paragraph is less clear?
RE: Exceeding B31.3 hydrostatic test pressure