×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Base Metal Qualification ( Piping vs Structural Steel )

Base Metal Qualification ( Piping vs Structural Steel )

Base Metal Qualification ( Piping vs Structural Steel )

(OP)
Dear All,

We have a WPS which is qualified for P1 Group 1&2 to P1 Group 1&2. A333 Gr6 to A350 LF2. PQR is impact tested. Now we have to weld P355 NL1 material on a stack ( S355 NL ). But these materials are unassigned as per ASME Section IX. I searched the web and found out that both materials are P1 GR 2. Can I weld structural steel material to structural steel material by using this WPS or do i have to prepare new test coupons from these two materials? Our QC Manager told that you cant add structural steel material and tubing material at the same time on the same WPS. Then what code should I use for qualifying these unassigned base materials?

I am really stuck!

RE: Base Metal Qualification ( Piping vs Structural Steel )

Two issues:

1) Does your contract/owner agreement permit use of ASME procedures to be used in lieu of AWS procedures (or whatever code your structural steel is governed by)?  If so, then your QC Manager's statement is incorrect.

2) As-is, no, you can not use an ASME procedure qualified for P1 materials to weld unassigned base metals, unless those materials are dual-certified as a listed grade.  You can either qualify new procedures per the base material groupings in QW-424, or go the grey area route of having a deviation approved by the owner and engineer of record.  I have used the latter approach a few times where a given material could be safely welded using an existing procedure, but the material was unobtainable within the necessary time frame.  
 

RE: Base Metal Qualification ( Piping vs Structural Steel )

(OP)
Not permitted. For structural we are following AWS procedures. As i understood, welders and PQRs shall be qualified as per AWS procedures. ASME Section IX doesnt work , right?

Thanks for your kind response

RE: Base Metal Qualification ( Piping vs Structural Steel )

kany,
It really depends on the Customer's contract specifications and Juridictional requirements.

We often use our ASME IX qualified procedures in lieu of AWS procedures when the Jurisdiction does not mandate AWS D1.1 and the Customer consents. Examination of the welds is per AWS D1.1.   

RE: Base Metal Qualification ( Piping vs Structural Steel )

Quote:

We often use our ASME IX qualified procedures in lieu of AWS procedures when the Jurisdiction does not mandate AWS D1.1 and the Customer consents. Examination of the welds is per AWS D1.1.    

We often do the same.

RE: Base Metal Qualification ( Piping vs Structural Steel )

We also often use our ASME IX qualified procedures in lieu of AWS procedures when consent is granted by the EOR.

Such variance has always been granted by EOR by accepting ASME Sec IX WPQs in liew of stated AWS D1.1 WPQs.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources