Re: [MW:16822] % Radiography Coverage for Welder First Performance Joint

Dear Jignesh

 

As per EIL Spec. for welder qualification after acceptance of WQT test piece. It is mandatory to take One No. Production Joint RT( Above 6 Inch dia) and 2 Nos. Joints To be requred for 6 Inch and below size for complete welder qualification. It is not covered in ndt % of piping class.

 

 

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Regards

Lalit Vadadoriya
Sr.Engineer (Inspection)
Engineers India Limited
Dahej Petrochemical Complex,

Dahej (Gujarat)

On Tue, Feb 19, 2013 at 1:52 PM, Jignesh Desai <jignesh.desai.met@gmail.com> wrote:

With ref. to below two paras of the PMC welding specification, Can we consider, these radiographed welds  under %NDT (RT) coverage for respective piping class?

• Where random radiography is specified, the first weld of each welder shall be completely radiographed. In the case of pipe of size 6" and below, the first two welds shall be completely radiographed.

• For each weld performed by a welder found unacceptable, two additional checks shall be carried out on welds performed by the same welder. This operation is iterative and the of two additional welds for each weld deemed unsatisfactory shall be continued till such time that two consecutive welds of satisfactory quality are found for every defective weld.

Regds/Jignesh

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