Re: Query: installation sense of PSV''s

From: <Gang>
Date: Sat Jan 15 2005 - 00:25:00 EST

Dear Pankaj,
Your contention is partly correct. Why the PSV is located at the highest point in the pipe is to serve two (if not more) purposes; first, to relieve the system and the second NOT TO HAVE RISKY VAPOUR products left inside, which could lead to fire accidents.
A third could be keep the noice source at a safer disatance, when it pops and lets loose the high velocity discharge.
Regards.
C. V. Gangadharan.
--- Pankaj.Mandal@fluor.com wrote:

> Since a relief valve can be located anywhere in the
> pipeline to be
> relieved of accidental pressure rise, an easier
> solution would be to
> relocate the PSV itself and follow a more
> conventional installation. I
> find it a general tendency amongst people to locate
> the PSV at the highest
> point of a pipeline which is absolutely not
> necessary. PSV is not a
> substitute of high point vent.
>
> Regards,
> Pankaj Mandal.
>
>
>
>
>
>
> Paul Bowers <pbowers@pipingdesign.com>
> 01/15/05 07:10 AM
> Please respond to PipingDesign
>
>
> To: PipingDesign@yahoogroups.com
> cc:
> Subject: Re: [PipingDesign] Query:
> installation sense of PSV's
> .
>
>
>
>
> Is this a liquid or gas installation? I forget.
>
> Maybe we need a drawing to look at. Send it to me
> and I'll upload and
> link it.
>
> Paul
>
>
> C.Y L wrote:
>
> > I reminbered "PSV should be installed vertically"
> is one statement of
> API code (or maybe ASME BPC code), but there is not
> a solid reason why.
> >
> > I do not see a problem to install a PSV in
> horizontal position, only
> "problem" is your piping installation does not agree
> with the code
> anymore. If you have no other way to install it, you
> may want to get
> approval from client to do it this way
>
>
>

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Yahoo! Mail - Helps protect you from nasty viruses. http://promotions.yahoo.com/new_mail Received on Sat Jan 15 00:25:00 2005