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Re: [MW:5241] NDT after PWHT

By Materials & Welding
This implies that you do NDT preferably  before PWHT. 
UT before PWHT is preferable if  counter-bores are favorably designed for UT and the root is made smooth by TIG
Carryout repairs if any and proceed with PWHT
Chances of reheat cracking are less after PWHT for P1 group mtls.

Regds
MSR 
------------------------------------------------------------------------------------------------------- 

On Fri, May 21, 2010 at 4:47 PM, manpreet <manpreetsin88@rediffmail.com> wrote:

Dear Luis

Currently I am working on LPG Pipeline project.

We have All P1 material, Even then Cpy spec ask for
NDT after PWHT.

When in doubt always go for stringent reference.
Acc to me it's better to go for NDT after PWHT.

Regards
Manpreet Singh
Spiecapag
Welding Engineer
On Thu, 20 May 2010 22:05:58 +0530 wrote

>
Dear friends
We just finished PWHT in an LPG sphere acording to ASME VIII section I, and I can´t find in the code the part that obligues to Xray after this treatment, any one has experience with this? where does ASME VIII say it has to be done?
Thank you
Luis Albanés








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