WPS and PQR

[Anumiah Veera Jegan]

Dear all,

The PQR and WPS for the project I am working on has multiple processes (GTAW for root and SMAW for fill and cap).Due to some constraints GTAW cannot be used. Can I use the same PQR and WPS to use SMAW for root , fill and cap as per API 1104 or do I need to requalify a PQR and WPS?. Thanks.

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[rajesh kaswala]

Requalify pqr

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[Jamie Reyes]

You do not need to requalify. I suggest creating a new WPS So there’s no confusion on the thickness range qualified. You didn’t mention impacts as being a factor, so as long as you’re able to still meet all the variables involved, you’re good.

Cheers....

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Regards,

Jamie Reyes

J.R. Machine Company, Inc.

[Adnan Ziad]

NORMALLY IN API 1104 A CHANGE IN FILLER METAL TO ANOTHER IS ESSENTIAL VARRIABLE THAT NEED REQUALIFATION  

5.4.2.6 Filler Metal
The following changes in filler metal constitute essential variables:
a) a change from one filler metal group to another (see Table 1);
b) for materials with a SMYS greater than or equal to that of the material specified as API 5L Grade X65, a change in
the AWS classification of the filler metal (see 5.4.2.2).
Changes in filler metal within filler metal groups may be made within the material groups specified in 5.4.2.2. The
compatibility of the base material and the filler metal should be considered from the standpoint of mechanical
properties  

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