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Anonymous Poster

Pressure Vessel - Hydrostatic Test

01/18/2011 9:44 AM

hi

i want to know what is the optimum time for hydrostatic test of pressure vessels?

thanks a millions.
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PWSlack
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#1

Re: pressure vessel

01/18/2011 9:51 AM

The optimum time is that period stipulated by the Engineer/Surveyor from the company that is supplying burst indemnity insurance for the facility during the Factory Inspection Test.

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Anonymous Poster
#2
In reply to #1

Re: pressure vessel

01/18/2011 10:15 AM

thanks for your answer befor this i check in ASME and it dose not specifically address the hold time duration as you answer.

thanks again
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TonyS
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#3
In reply to #2

Re: pressure vessel

01/18/2011 11:33 AM

Did you ask for hold time duration?

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mehdiarab
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#6
In reply to #3

Re: pressure vessel

01/19/2011 2:11 AM

yes i did TonS

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PWSlack
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#4
In reply to #2

Re: pressure vessel

01/18/2011 5:51 PM

Then ask the Engineer/Surveyor for the company that is ............

OK?

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mr.varan
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#5

Re: Pressure Vessel - Hydrostatic Test

01/18/2011 11:46 PM

Hi,

Usually 1 hour.

pressurize step by step - 25% each step and hold 10 min.

Once reach 100% hold for 1 hour.
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Mukesh0861
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#7

Re: Pressure Vessel - Hydrostatic Test

01/22/2011 12:56 PM

Usually pressurisation is done in steps. waiting 10 or 15 minutes after each step of say 15 or 20%. At working pressure of vessel wait for one hour then over pressurized to specified test pressure and usually it is specified .5 hr or 1 hr. Releasing of pressure shall also be in steps so that vessel take its shape well.
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