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Re: [MW:25812] Temporary piping used in hydrotest - ASME B31.1

By Materials & Welding
Hello Zakaria,
Please see below
 
Best Regards,
Shashank C Vagal  (Quality Adviser)
Neo Metal-Analyst & NDT Services (Approved by IBR, Thermax, AERB)
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From: Zakaria ghrab <zakaria.ghrab@gmail.com>
To: "materials-welding@googlegroups.com" <materials-welding@googlegroups.com>
Sent: Saturday, 10 December 2016 8:10 AM
Subject: [MW:25809] Temporary piping used in hydrotest - ASME B31.1

Dear Experts,

  Could you advise us: For piping system hydrotests power plant project, we ave to prepare and use some temporary piping. The issue is :

- Is it Manadatory to perform NDE in related welds  and also PWhT
NO FOR EITHER, 
BUT FOR PWHT - ANY WELDING INDUCED STRESSES IN EXCESS OF YS MAY BE UNDESIRABLE.
PERFORMING NDE ON ALL INCLUDING TEMPORARY MEMBERS WILL BE IN YOUR BEST INTEREST. IF A JOINT LEAKS BECAUSE OF ANY WELD DEFECTS, YOU WILL FACE EXTRA COST, ADDED TIME, RE-SCHEDULING, ETC  DUE TO  RE-HYDRO.
- For Flange fabrication, how to use plate thickness, any code or standard reference !
PLEASE SEE ATTACHED


Please advise according your experience and with ASME reference .

Thank you.

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Thanks and Regards, ?
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زكرياء غراب
GHRAB Zakaria 
Tunisia : +216 96 635 805

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