×
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

understanding of ASME code IX

understanding of ASME code IX

understanding of ASME code IX

(OP)
I had a impact tested PQR (GTAW+SMAW) with P1G1 TO P1G2 material having a coupon thickness 6 mm with 3 mm GTAW & 3 mm SMAW.(Qualification as per ASME sec IX)
so my base metal qualification is 3 to 12 mm with 6 mm GTAW & 6 mm SMAW.
I had another impact tested PQR(GTAW+SMAW+SAW)with P1G1 TO P1G2 having coupon thickness 12 mm with 2 mm GTAW,2mm SMAW & 8 mm SAW.

Can I develope a WPS with (toughness requirement) 3 to 24 mm base metal thickness qualification  (GTAW+SMAW+SAW) having above two PQR as supporting PQR?
If yes,what will be weld metal qualification for each process?
Can I weld a production piece P1G2 TO P1G1(requiring toughness test) of 10 mm thickness with 2 mm GTAW & 8 mm SAW having above two PQR as supporting PQR & maintaining all the other essential & supplimentery essential variable of SEC IX.

A quicky reply is highly appreciated.





 

RE: understanding of ASME code IX

6mm GTA and SMAW fill to max qualified.

RE: understanding of ASME code IX

(OP)
As per customer spec ,10 mm production piece's final pass need to be welded with SAW process only so can the weld procedure be developed by above way with above two supporting PQR?

RE: understanding of ASME code IX

Lahane,
Based on the info above, for impact qualified applications, your SAW process cannot be used on plate less than 12mm thick.

RE: understanding of ASME code IX

Is it mandatory to mentioned WPS no. on PQR, if so where it is given in section IX

RE: understanding of ASME code IX

Pandithan,

No it is not necessary to place the WPS # on a PQR, and for many folks it's a bad idea.
 
For one thing, you may have multiple WPS' supported by one PQR and if you were to list the WPS numbers on the PQR you'd be constantly revising the PQR.    

RE: understanding of ASME code IX

Please spend the money and qualify your processes separately.  Combinations lead to no end of these types of complicated questions.  

I see Charpy testing of two (or more) processes within the same coupon as a weakness in Section IX and possibly even a loophole.  One of the deposits could have relatively poor properties on its own, but gets allowed because the other is very tough.  How do you measure the actual respective deposit thicknesses anyway, especially on thin material?   

RE: understanding of ASME code IX

brimstoner,
ASME IX really only points you to a referencing section for impacts.

QW-171.3 Location and Orientation of Test Specimen.
The impact test specimen and notch location and
orientation shall be as given in the Section requiring
such tests.

ASME B31.3 states under "Test piece for preparation of impact specimens."
A-4 One required for each welding procedure, for each type of filler metal (i.e., AWS E-XXXX classifition),and for each flux to be used.

As for the measuring of processes - a steel rule across the face of the plate / pipe with the shaft of a vernier caliper pointing down into the prep works very well for measuring.
Hope that helps,
Cheers,
Kiwi.

Hope that helps

RE: understanding of ASME code IX

yes

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