AWS D1.1 and ASME Sect IX PQRs combinations

[Anban]

Dear Experts

Dear Sirs

Pls advise .

AWS D1.1-Structural Welding Code-Steel
ASME IX - ASME Boiler & Pressure Vessel Code

Current situation- Module Tubular Columns( 800mm in dia x 30mm thk ) at assembly stage ( Vertical Position -Butt weld in 2G position ).
Material - AWS Group II- ASTM A131-Grade EH36
Internal accessibility - Not allowed for safety reasons.
So Project suggest to use- Root Run using GTAW and Fill/Cap by FCAW

I want to prepare WPS combining -
1- PQR qualified in 6G position using GTAW in accordance with ASME IX ( Base Material- APL 5L X65 ( CVN at -46 deg C)
2- PQR qualified in 2G position using FCAW( with ceramic  Backing Strip ) in accordance with AWS D1.1.( Base Material - AWS Group II-EH36-CVN at -40 deg C)

Can i do it? Does the codes prohibit such combinations? Is there any code Interpretations on this subject? 

[Naskabir Vengassery]

Anban,

no code in  my knowledge address this matter .Hence such combination is technically not possible

[veera raghava kommisetti]

Establish both with ASME. Why AWS??

If P.No is issue for EH36, you can write only chemistry 

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[Chaitanya Purohit]

AWS D1.1 is the code for Welding of Structural Steel 

ASME Sec IX is the code for welding of B&PV

Both the code requirement for qualification are different. You ma use AWS and ASME WPS in single work (upon client acceptance). but you can not club the two PQR from different code in one WPS. 

I understand that you are keen to utilize the existing PQRs to complete the job and save extra PQR qualification time to meet schedule.

Regards.

Chaitanya Purohit    

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C. K. Purohit
CSWIP 3.2, ASNT Level 3 (RT,MT)

Registered IRCA Lead Auditor

[Sahavas v s]

Hello,

Combination not possible as per code,so you can prepare two WPS ,one as per ASME and other one is as per AWS with weld metal backing.

 

 

 

 

On Thursday, June 26, 2014 2:03:44 AM UTC+3, Anban wrote:

[sudhakar kuppuswamy]

Hi,

If you got PQRs for all the process in line with ASME Sec 09 requirements , you can prepare a WPS inline with ASME Sec 09 alone and request your client to accept the same in place of AWS D1.1.

API RPI 582 allows the same , but subjected to client approval.

Regards
Sudhakar.K

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