Butt Weld w/ Consumable Insert - WPS Qualificaiton per ASME IX / B31.3

[beh188]

I have an application where a butt weld between two pipes is typically performed. The process calls for the use of a consumable insert. Typically the dimensions of the material are about a 4" diameter pipe with 1/4" thickness.

The WPS needs to be qualified to ASME IX and B31.3.

I am familiar with the rules for qualifying a typical joint without the use of a consumable insert, but B31.3 states you need to specifically qualify with the use of a consumable insert. Can anyone provide guidance on the rules for what thicknesses can be qualified using a consumable insert? Is only the joint design that is tested qualified, with no application of the standard 1/16" to 2T thickness rules? I would like to have a general qualification that could apply to different pipe diameters and wall thicknesses.

Thanks.

 

[Kiwi2671]

beh188,
I cannot find any reason why the thicknesses in Table QW 451 would not be applicable to your qualified procedure,
Regards,
Kiwi

 

[Duwe6]

Good news: Kiwi2671 is correct -- QW-451 applies.

Bad news: QW-404.22 also applies. Each welder has to be tested on Consumable Inserts. Use the same butt-weld test you usually give, and put in a Consumable Insert. Each welder will probably want to practice for 2 to 5 coupons [roots w/inserts only]