If a customer is asking for Helium Leak Testing, he may be worried about fugitive emmisions from the equipment. Clean Air Act or TA Luft would govern .
1 x 10-5 mbar.l/sec or even 2.5 as suggested by you seems to be okay.
Helium leak testing basically involves evacauating a space to a high vacumn level (say 10 -6 torr ) and measuring the no of helium ions entering the space by using a mass spectrometer. This is described in the article or you can also refer to ASM handbook on Non Destructive Testing.
Hope the above helps to some extent.
Regards
Ponnu
e-Director <segip@tm.net.my> wrote:
We are doing a helium leak test at a PDH plant......... I do not know why
the owner want to do this test... They claim that they want to make sure
even Hydrogen gas will not leak from the plugs?????
Anyway do you know the standard leak test for Petrochemicals??? I have a value of 2.5 X 10-2 ml/s. Is it good enough???
> Is this good enough?
>
> http://www.ndt.net/article/ecndt98/offshore/268/268.htm
>
> Why would you want to test with He anyway.
>
> Paul
>
>
> ----- Original Message -----
> From: "e-Director" <segip@tm.net.my>
> To: <PipingDesign@yahoogroups.com>
> Sent: Tuesday, May 04, 2004 12:34 PM
> Subject: [PipingDesign] HELIUM LEAK TEST
>
>
> > Does anyone know how to conduct/method for helium leak test??
> >
> > Acceptable leak rate according to any Standard????
>
>
>
>
>
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[Non-text portions of this message have been removed] Received on Wed May 05 03:33:00 2004
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