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

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

Yesterday is the past, tomorrow is the future; and today? Today is the present, the gift: Enjoy it!

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