ASME Section IX Welder Qualification

[vijay Katkar]

Dear Kundan/Mayur,



ASME Section IX Welder Qualification related Question.



As mentioned in section IX for qualification of welder or welding
operator use qualified WPS with supporting PQR's, if our PQR is welded
with P No- 8 to P No-8 (SA 240 TP 316L TO SA 240 TP 316L).

Is it possible to make WPS with P No-1 to P no-1 (PQR is with P No -8
To P No-8) but other than p no all variable are same as used in PQR
(Like filler wire, shelding gas, purging if require or etc), this WPS
will use only for welder qualification. please guide us.



Vijay Katkar

[kannayeram gnanapandithan]

not possible to make wps.  pnos are essential for wps and welders(ferrous to non ferrous)

if u qualify welder with p1, he is qualified to weld pnos up to 15f provided other essentials are in order

kgp

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[Devarajan Ramasamy]

Dear Vijay,

 

You never mentioned the welding process that you are going to use for the welding, but as per ASME Sect IX, all the available welding process has P. No as an essential variable, which means you cannot use P8 qualification record to qualify P1 WPS.

 

But, if you have a WPS of P8 - P8 and your intention is to qualify your welder for this WPS using P1 as your base material, you can do so by quoting

 

QW-423.1 Alternate Base Metal for Welder Qualification

- In essence, Welder Qualification using P1 base metal qualifies for P1 to P11 material as long as your filler wire/ electrode is equivalent as per your WPS.

Hope this answers your query.

 

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~ DEVARAJAN RAMASAMY~

[raj roy]

Dear Devarajan,
As para QW-423.1 of ASME Section IX  Base metal used for welder qualification may be substituted for the metal specified in the WPS in accordance with the following table. Table is mentioned as follow

Base Metals for Welder Qualification	Qualified Production Base Metals
P-No. 1 through P-No. 15F, P-No. 34, and P-No. 41 through P-No. 49	P-No. 1 through P-No. 15F, P-No. 34, and P-No. 41 through P-No. 49

  so we can substituted base metal without qualified any PQR is it the interpretation of this clause.

[Devarajan Ramasamy]

Thanks,

The latest revision of AME Sec IX 2010 does quote as per your explanation. I was referring to ASME Sec IX 2002 when I was explaining about the QW 423.1. But, through my understanding, any P1 to P15F base metal qualifies for welder performance test for P1 to P15F, P34 qualifies for P34 and any base metal of P No. 41 to P No. 49 qualifies for P No. 41 through P No. 49. 

There is another interpretation from a website www.gowelding.com that interpretes that any P No. 1 to P No.15, P No, 34 or P No. 41 through P49 qualifies for all P No. 1 to P No. 15, P No. 34 and P No. 41 through P No. 49. 

Please refer http://www.gowelding.com/wp/index.htm, quote

Welder Performance Qualification (WPQ) Materials  The purpose of this test is to determine the welders ability to deposit a sound weld therefore the base material is not considered as critical as it is in the PQR. Hence a performance test on any material in P groups 1 to 11 approves all those groups and sub groups, also P34 and P4X (P40-P49). Providing a compatible consumable exists with the same F number used in the qualification test. (QW423.1)

Which one is the correct interpretation? 

Hope some one can enlighten me in this issue.

[Rudi Putera]

Dear Devarajan,
My understanding, the correct interpretation is from website www.gowelding.com, that any P No. 1 to P No.15, P No, 34 or P No. 41 through P49 qualifies for all P No. 1 to P No. 15, P No. 34 and P No. 41 through P No. 49.
this interpretation I used in my current company for create welder certificate


Regards
Rudi

2011/9/13 Devarajan Ramasamy <neo.de...@gmail.com>

[TRavi...@flowserve.com]

Dear experts

In my view  we can not take a Base metal groupnig only in establishing as the P no changes the Filler rod , weld parameters ,&PWHT  ,in considering all, any any changes we need to establish the new WPS/PQR as per ASME SEC IX


RAVIKUMAR T S

[Mr Achmed]

as additional information you can read the following article :welder qualification atau prequalified proceduresB RAchmed

2011/9/14 <TRavi...@flowserve.com>

[ebrahem waheed]

Dear Expert

May it seems a stupid question, but really i am confused

What is the meaning of P-No.23 to P.No. 21 through P-No.25

and

P-No. 21 through P-No.23 with F-No. 23

Thanks