S275 JR 1

[Beginner - Inspector]

Greetings

Please kindly advise me, I have a WPS qualified for PNo.1 Grp No.01 to PNo.1 Grp No.01 (A106 Gr.B-A53Gr.b-API 5l Gr.B/X52 or Equivalent) . The drawing specified with material A36 Whose PNo is same (PNo.1). But the actual material received is EN 10025-2 S275 JR. Now this S275 JR is not available in ASME SEC-IX, it is an unassigned material to ASME SEC IX. Hence Please adivise me whether we can proceed welding with the same WPS.

 

[Dhurjati Sen]

The material you have received is equivalent to all the materials you have listed.
Take a written consent from your client / customer by providing them with the equivalence documentation.
Then carry on welding as per the WPS available with you.

DHURJATI SEN

 

[DekDee]

No, you cannot use the same WPS as it is an unassigned material.
See QW 424.1

 

[Beginner - Inspector]

Mr. Sen

Even I produce the equivalency certificate. S275 JR is not having the PNo in asme sec IX . So how i could state both have same P NO.01. please advise.
Regards

 

[DekDee]

You cannot state they are both P No.1
S275 JR does not have a P number so it is classed as unassigned.
You need a WPS that has been qualified with S275 JR.