WPQ_ASME Section IX

[nut]

Dear experts,

Please advise on below query.

Ref Code: ASME Sec.IX

WPS Thickness range qualified  is 5- 22 mm

Can i conduct WPQ on 4mm or below thick plate or pipe using above WPS  if there is a necessity.

Or simply

Does anything restrict that the WPQ coupen thickness or diameter  should be within the qualified thickness range of referred  WPS?

Thank you.

[meisam shokri arfaei]

Hi,

Performance qualification should be based on welding a qualified WPS or SWPS, So the welder could weld in the range of qualified thickness.

Refer to QW-301.2 for more details.

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M. Shokri Arfaei

ISA-ISTS - Metallurgy Lab. Manager

ASNT NDT Level III

International Welding Engineer

Tel.: +98 21 66282127

Fax: +98 21 66282779

Mob.:+98 912 1394023