[MW:539] Re: SET PRESSURE FOR PRESSURE RELIEF VALVE FOR HYDROTESTING OF POWER PIPING

When conditions require that a pressure test will be maintained for a
period of time during which the testing medium in the system would be
subject to thermal expansion, provision should be made for relief of
excess pressure.

I have no idea about any code requirement but normal practice as per
my experience for Valve Setting Pressure is Test pressure plus
lesser of 10 psi (0.69 Bar a) or 7% of the test pressure

> From: shailesh dave [mailto:snd2...@yahoo.com]
> Sent: Wednesday, January 30, 2008 1:46 PM
> To: materials-welding@googlegroups.com
> Subject: Re: [MW:537] Re: 533] Filler metal for P 11 (O/L SS 347) to P8
>
> Dear Members,
>
> Can anybody tell me at what pressure of hydrotest be safety relief valve set. What is the reference code.
>
> Regards,
>
> S.N.Dave
>
> QA/QC Manager
>
> ---------------------------------
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