In my opinion 100% RT has to be done after PWHT .
have a nice time :-)
Mandar
-----Original Message-----
From: Paul Bowers [mailto:pbowers@pipingdesign.com]
Sent: Monday, April 09, 2001 7:59 PM
To: <a href="/group/PipingDesign/post?postID=RUpCOshKGbrjULOx6H50USU615UNPIOAw5SMgDN-4D6SPBExSi7ScdCldHJKU4kYHG5Nbv7QGddSoklf8GKxQs0REQ">PipingDesign@yahoogroups.com</a>
Subject: Re: [PipingDesign] Fuel Gas Piping
A quick Google search gives me this:
<a href="http://www.nfpa.org/Codes/Current_Codes_and_Standards/Info_About_D">http://www.nfpa.org/Codes/Current_Codes_and_Standards/Info_About_D</a> ocuments/Overview_of_Major_Documents/NFPA_54__National_Fuel_Gas_Co d/nfpa_54__national_fuel_gas_cod.html
<a href="http://www.osha-slc.gov/OshStd_data/1910_0253.html">http://www.osha-slc.gov/OshStd_data/1910_0253.html</a>
<a href="http://www.aga.org/pdf/PublicInfo/CodesStandards/NationalFuelGasCo">http://www.aga.org/pdf/PublicInfo/CodesStandards/NationalFuelGasCo</a> de/web_page_origin_and_scope.pdf
You're asking pretty specific technical questions, the ASME discussion board can undoubtedly help you as well:
<a href="http://www.asme.org/bboard/main-frame.tcl?topic=Pressure%20Vessel%">http://www.asme.org/bboard/main-frame.tcl?topic=Pressure%20Vessel%</a> 20and%20Piping
I didn't look too carefully into your inquiry, do you have access to local codes? In any case, I would hope that the RT is done *after* the PWHT.
Paul
> Urgent :
>
> Please clarify whether,
>
> a) Fuel gas piping requires 100% RT as per BS 31.2
> standard regardless of diameter and thickness.
>
> b) Fuel gas piping requires 100% PWHT as per BS 31.2
> standard regardless of diameter and thickness.
>
> If there are any other standards, please clarify on
> the two points.
>
> Thanks.
>
> Bhanu
Your use of Yahoo! Groups is subject to <a href="http://docs.yahoo.com/info/terms/">http://docs.yahoo.com/info/terms/</a> Received on Mon Apr 09 23:33:00 2001
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