Re: Removal of gaskets after pressure test of piping system.

From: <Gang>
Date: Wed Aug 31 2005 - 01:11:00 EDT

Dear all,
All gaskets need not be replaced after a hydro test. Soft and resilient ones definitely needs replacement. Metallic ones need not be touched. This applies to RTJ and lens rings.
The hydro test is for checking the soundness of the fabrication, not for the efficiency of the joint. Once that aim is fulfilled, the containing the leaks at the joint is a task of the fitter.
Regards.
C. V. Gangadharan.

• Pankaj Mandal <man45039@yahoo.co.in> wrote:

>
> Hello everyone,
>
> I would like to know if it is mandatory to replace
> all gaskets after pressure test of piping. If we do
> replace the same how do we ensure proper flange
> tightening? I believe one of the major role of
> pressure testing of pipes is to ensure proper bolt
> tightening and leak proof flange joint.
>
> Pankaj Mandal.
>
>
>
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