Re: [MW:23439] backchip

No need to requalify the procedure.

On 10 Sep 2015 20:48, "Jay Poojary" <jayogini@gmail.com> wrote:

Dear Experts,

Can anyone answer this concern.

We have WPS & PQR for piping, qualified with GTAW + SMAW. Now we indent to do backchip for the production joints. Does this asks for requalification of PQR. Is this a essential variable. Where it is address in QW- 256 & QW-253.

Please advice.

cordially,

Jay Poojary

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