hazards of pneumatic testing?
hazards of pneumatic testing?
(OP)
Last week I came across some calculations for a vessel that will be pneumatically tested. Test pressure is about 140 psi. The vessel itself is about 18 feet dia x 260 feet tan-tan.
Maybe it's just me but this test seem to be potentially hazardous to health if there's a failure. ??
Maybe it's just me but this test seem to be potentially hazardous to health if there's a failure. ??





RE: hazards of pneumatic testing?
See thread794-26767 and let us know how many tons of TNT equivalent you have!
jt
RE: hazards of pneumatic testing?
Strongly suggest you are nowhere near during the test. Preferable to be in the next state.
RE: hazards of pneumatic testing?
RE: hazards of pneumatic testing?
Try this one. See index.
RE: hazards of pneumatic testing?
I am not underplaying the danger associated with the pnuematic test, but suggesting that people tend to get used to , and ignore, the exact same hazard during their day to day work life.
RE: hazards of pneumatic testing?
Verify the relief valve works?
davefitz, it sounds like you have some knowledge in this area. What should TomBarsh be ensuring is in the test procedures?
Patricia Lougheed
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RE: hazards of pneumatic testing?
SD = 15 x (TNT)^0.5
SD = m
TNT = lb
This type of test can be accepted by your AI when properly justified.
RE: hazards of pneumatic testing?
You're argument is valid to a certain extent. The consequence of failure during operation is typically higher than that of a failure during pneumatic or hydrotesting. However, the probability of failure is greater at the initial test: This is when fabrication foulups will most likely exhibit themselves. By limiting access to the area during the test, the consequences of a failure can be mitigated.
To throw an analogy out here, why couldn't I take the same argument to say that I shouldn't have had to take the PE test: After all, I studied for the test, and I'm more likely to forget something important later, so since I studied, just give me the PE without the test and let me get to work designing equipment. If I mess up on some design 10 years later, I'll surrender the PE.
jt
RE: hazards of pneumatic testing?