Time duration for a pressure test
Time duration for a pressure test
(OP)
Hi All.
Could anyone help me with this question?
How long should a pressure test last?
Is it reassonable that a pressure test lasts 15 minutes?
I cannot rememeber what ASME or BS PD5500 say about it and I would like to know if there is any standard that specifies 15 minutes.
On the other hand, is there any standard that requires to do the pressure test twice although the result of the first test was ok?
I was given a procedure where after the completion of the first pressurization, it has to come back to 0 bar and go up again to the test pressure.
Thank you very much
Jaime
Could anyone help me with this question?
How long should a pressure test last?
Is it reassonable that a pressure test lasts 15 minutes?
I cannot rememeber what ASME or BS PD5500 say about it and I would like to know if there is any standard that specifies 15 minutes.
On the other hand, is there any standard that requires to do the pressure test twice although the result of the first test was ok?
I was given a procedure where after the completion of the first pressurization, it has to come back to 0 bar and go up again to the test pressure.
Thank you very much
Jaime





RE: Time duration for a pressure test
David Simpson, PE
MuleShoe Engineering
www.muleshoe-eng.com
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RE: Time duration for a pressure test
raton, see the thread378-269828: TIME OF DURATION OF HYDROSTATICS TEST PRESSURE.
Good luck!
RE: Time duration for a pressure test
RE: Time duration for a pressure test
It was a useful answer.
Much appreciatted.
jaime
RE: Time duration for a pressure test
I have charted for a half hour on ocassion. But fifteen minutes is extremely common.
Kenneth J Hueston, PEng
Principal
Sturni-Hueston Engineering Inc
Edmonton, Alberta Canada
RE: Time duration for a pressure test
Could you list any standard where 15 minutes are required?
Thanks
Jaime
RE: Time duration for a pressure test
In this regard, 15 minutes is the minimum allowable duration under the code for valve sizes NPS 12 thru 18.
Kenneth J Hueston, PEng
Principal
Sturni-Hueston Engineering Inc
Edmonton, Alberta Canada
RE: Time duration for a pressure test
For water main pipelines, AWWA M11 states:"the hydrostatic test pressure is usually applied for a period of 24 hours before the test is assumed to begin, principally to allow for a lining material to absorb as much water as is possible. after that, the pipeline should be carefully inspected for evidence of leakage. .... the test pressure should be maintained at least 2 hours."
M11 also specifies the permissible leakage rates.
RE: Time duration for a pressure test
From a Codes and Standards perspective, the leak test duration should be as long as necessary to ensure no visible signs of leakage. This is common language and is up to the owner/engineer/inspector to decide. For example, a new power boiler 10 stories in height may take 30 minutes, a pipe spool, may take 2 minutes.