Welding Operator Essential Variable

[Jegan Thiyagarajan]

As per Sec IX QW-360; P.No & F.no is not an essential variable for welding operator - Machine welding

My concern is we have different procedure qualification (WPS) in our database. If welding operator qualified for Sl.No.1 below can weld Sl.No. 2 to 7 within the limits of the essential variables QW-361.2.

Sl.No. 1, AISI4130 + Inconel 625
Sl.No. 2, A106 + Inconel 625
Sl.No. 3, A106 + SS316L
Sl.No. 4, SA234 WP22 Cl 3+SS 347
Sl.No. 5, API 5L X65 PSL2 +SS 316L
Sl.No. 6, F22 + Inconel 625
Sl.No. 7, Alloy 625 + Inconel 625

Additional in QW-305 Paragraph 2 tells,
A welding operator qualified to weld in accordance with one qualified WPS is also qualified to weld in accordance with other qualified WPSs within the limits of the essential variables of QW-360.

Please help me.

 

[XL83NL]

This post is more appropriate for the section Welding, Bonding & Fastener engineering. Whats your exact question?

 

[Jegan Thiyagarajan]

yes it's related to Overlay welding (Cladding). I have a qualification for welding operator with AISI4130 base material + Inconel 625 filler wire.

Whether this welding operator can do overlay welding (Cladding) for different Base material with different filler wire without qualifying him again.

Since we have different welding procedure as below, we don't think we need to qualify welding operator for each procedure as below according to ASME SEC IX clause QW-361.2

Sl.No. 1, Base material AISI4130 + Filler wire Inconel 625
Sl.No. 2, Base material A106 + Filler wire Inconel 625
Sl.No. 3, Base material A106 + Filler wire SS316L
Sl.No. 4, Base material SA234 WP22 Cl 3+ Filler wire SS 347
Sl.No. 5, Base material API 5L X65 PSL2 + Filler wire SS 316L
Sl.No. 6, Base material F22 + Filler wire Inconel 625
Sl.No. 7, Base material Alloy 625 + Filler wire Inconel 625

Advice me.