Hydrostatic/pressure/leak test for ASME B:31.3, 31.4, 31.8
Hydrostatic/pressure/leak test for ASME B:31.3, 31.4, 31.8
(OP)
Hi,
In B31.3, the pressure test is usually 1.5xDP
B31.4 says 1.25xDP and
31.8: 1.25 to 1.5xMOP depending on class and division of location
Question: is this test pressure and media for both welded, threaded, etc joints of pipes and/or fittings or for only welded?
Thank you.
In B31.3, the pressure test is usually 1.5xDP
B31.4 says 1.25xDP and
31.8: 1.25 to 1.5xMOP depending on class and division of location
Question: is this test pressure and media for both welded, threaded, etc joints of pipes and/or fittings or for only welded?
Thank you.





RE: Hydrostatic/pressure/leak test for ASME B:31.3, 31.4, 31.8
For the other codes- sorry, don't know- never read 'em.
RE: Hydrostatic/pressure/leak test for ASME B:31.3, 31.4, 31.8
For the other codes- sorry, don't know- never read 'em.
RE: Hydrostatic/pressure/leak test for ASME B:31.3, 31.4, 31.8
Pt=1.5PSt/S
where:
Pt=Minimum test gage pressure
St=Allowable stress at test temperature
S=Allowable stress at design temperature
P=Design gage pressure
Best regards
Edilson