[MW:14686] Re: P1 Material Pipe welding Joints RT and MT before PWHT is Acceptable or not ?

Man,

Yes, you can. The MPI or RT before PWHT is make sure sound weld. But, after PWHT, you shall be MPI/RT to make sure no defects were founds by PWHT. Cause, PWHT is cause of delay crack or other defects. The best way you should be MPI/RT after 24/48/72 hours as applicable code/spec.
On Monday, June 25, 2012 4:48:08 PM UTC+7, mpk mpk wrote:

Dear experts,

P1 Material Pipe welding Joints  RT and MT examination  before PWHT  is Acceptable or not ?

As per 2010  ASME B.31.3 para 341.3 Examination requirements,

(a) for P.nos 3,4 and 5 materials Examination shall be performed after completion of any heat treatment.

Thank you

YEM.

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