Thickness Qualification Range of Impact tested WPS for Piping

[Biplab Pal]

Dear Experts,

If impact test is required for any WPS the base metal thickness limit is an supplemental material and qualification of minimum thickness limit shall follow QW-403.6.

Now our Consulting Service Department is telling us the qualification thickness limit shall be t/2 to t+6mm. as per ASME B 31.3 table 323.3.1 for piping.

Guys, did you faced this kind of problem? I am experiencing this problem 1st time.

Please let me know your understanding and experience.

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Thanks & Regards
Biplab Pal
Welding Inspector

E-mail:   bipla...@gmail.com
 
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[george....@gr.bureauveritas.com]

Indeed there the requirement of B31.3 is different

best regards

Dr. Georgios Dilintas

Authorized Nuclear Inspector
Authorized Inspector Supervisor

I&F REGIONAL TECHNICAL MANAGER
BUREAU VERITAS PIRAEUS - GREECE

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"'Biplab Pal' via Materials & Welding" ---12/01/2016 10:40:52---Dear Experts, If impact test is required for any WPS the base metal thickness limit is an

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[Kannayeram Gnanapandithan]

Ur client is ok

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[Biplab Pal]

[Raghuram Bathula]

yes construction code (B31.3) limits will apply

[Vino Varghese]

One has to refer the applicable Construction Code for the Impact test requirement. If its, ASME B31.3, you need to follow the same.

Regards, Vino

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[afrozsh...@gmail.com]

Dear Biplab,

As QW403.6 & ASME  B 31.3, thickness qualification range will be as mentioned below

Minimum Thickness qualification :(1) If t is more than 6 mm then  min thickness qualifies will be  t or 16 mm whichever is less (2)If t is less than 6 mm then min thickness qualifies will be 1/2 t

 
Max Thickness Qualification: t + 6 mm

Regards,

Afroz Shaikh
IOTIES

[Biplab Pal]

Dear all,

1st thanks for your kind support.

So we are in conclusion of 2 as all people suggested.

As per ASME B 31.3 if we are qualifying a WPS the following shall apply.

Case 1. If thickness of test piece is less than 6mm then qualification range will be 1/2t to t+6.

    If thickness of test piece is above 6mm then qualification range will be either 16 or t to t+6.

Case 2. for all 1/2t to t+6.

Please provide your input which one is correct case 1 or case 2 ??

Thanks & Regards

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Thanks & Regards
Biplab Pal
Welding Inspector

E-mail:   bipla...@gmail.com