Leak Check

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Anonymous Poster #1	Leak Check 06/29/2012 6:28 AM
	Hi all Any procedure or standard when come to leak check, Cause during the leak test we use hydro test to check the leak but the Inspector insist to use nitrogen to test the leak??? any advise??? Regards
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PWSlack Guru Join Date: Jan 2007 Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on. Posts: 32175 Good Answers: 839	#1 Re: Leak check 06/29/2012 6:36 AM
	Simple. In order to obtain certification and burst damage liability cover from the Inspector's company, follow that individual's instructions. However, it is a wise precaution to test on an incompressible fluid to a pressure above that specified for the test on the compressible fluid. Ruptures in pressurised systems cause rather less damage when an incompressible fluid is used. __________________ "Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
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Drew K Guru Join Date: Sep 2009 Posts: 1651 Good Answers: 71	#2 In reply to #1 Re: Leak check 06/29/2012 6:48 AM
	I have seen instructions for using air to test a feedwater heater in a power plant. The test pressure was much lower than the liquid hydrostatic test pressure and seemed intended to find leaks in the weld or valves instead of testing the integrity of the vessel. I could see some specialized containers being tested without using liquids but safety precautions should be taken to prevent explosive failure causing harm. Drew K I just went back to the home page and see this (and the other seemingly related post) has been removed...guess the overlords don't think talking about potentially fatal testing procedures is not good enough?!?! __________________ Question: What is going on with the American's Government? Response: Who is John Galt?
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WJMFIRE Guru Join Date: Apr 2009 Location: USA, Florida Posts: 1595 Good Answers: 125	#3 Re: Leak Check 06/29/2012 3:16 PM
	It all depends on what you are testing. If you are testing water piping, hydro-testing is appropriate. If you are testing nitrogen piping, nitrogen pressure is appropriate. What are you testing ? __________________ An obstacle is something you see when you take your eyes off the goal.
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Drew K (1); PWSlack (1); WJMFIRE (1)

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