Welder Qualification

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Dhanabal Jalachandran

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Aug 25, 2014, 4:40:05 AM8/25/14
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Gent's,

Kindly need your advice to clear one issue based on Welder Qualification.? These questions were asked to me yesterday in Aramco Interview.

  • If a welder is qualified with CS, can he weld SS.? ( i answered he cannot as F4 and F5 doesn't allow as per ASME Sec IX), but the interviewer told me it can be welded in GTAW with some kind of Gas i forgot the name of it. but i have gone through all the reference code i dont find any as P number and F number are essential variable.

  • Welder requires tack welding qualification in ASME Sec IX or AWS D 1.1.? As per ASME Sec IX all the welders need to be qualified. As our company manufactures only Tanks and Vessels not much involved with AWS D 1.1, is there any applicable stuff where specifically welder needs to be qualified for Tank welding if he is not qualified welder.??

  • If a welder is qualified with ASME Sec IX, can he weld the jobs with the code based on AWS D 1.1.? I have answered yes it's possible as the requirements need to be followed, i.e., Essential variable, Client approval as per AWS D 1.1 Clause 4.2.2.1
 
Regards
Dhanabal Jalachandran

george....@gr.bureauveritas.com

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Aug 25, 2014, 5:25:45 AM8/25/14
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The Fno can be the same in case of SS and CS (example Fno4 and Fno 5). The same for F no6, it can be both. The Pno range is huge and includes Pno1 and Pno 8. So your answer, general speaking was wrong.
Tack welders need to be qualified if the tack weld remains in place. If tack welds are removed, the welders need not to be qualified. This is for the ASME Code.
I know nothing about AWS  D.1.1

    best regards

    Dr. Georgios Dilintas

    Authorized Nuclear Inspector
    Authorized Inspector Supervisor


    I&F REGIONAL TECHNICAL MANAGER
    BUREAU VERITAS HELLAS

    Tel: +30 210 40 63 113/4
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Inactive hide details for Dhanabal Jalachandran ---25/08/2014 11:51:02---Gent's, Kindly need your advice to clear one issue basDhanabal Jalachandran ---25/08/2014 11:51:02---Gent's, Kindly need your advice to clear one issue based on Welder Qualification.?

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Mohit Aggarwal

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Aug 25, 2014, 5:34:35 AM8/25/14
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Dear,

Point 1 If a welder is qualified in CS for GTAW process then he is qualified for SS with gas backing Argon because for GTAW process deletion of gas backing is essential variable if you carefully go through CODE and for GTAW filler wire SS and CS
both falls in F NO 6 AS given in code. So CS qualified welder cam make weld in SS and for P no welder is qualified to weld in P1-P15, P34, P41-P43 etc. As per code.

Point 2-As per code you need to qualified welder for tack weld also because it depends whether tack become part of welding aur you are going to remove it also material, service conditions of equipment.

Point the 3-If both codes requiement filled and after client approval welder is qualified.
Best Regards,
Mohit Aggarwal.

Dhanabal Jalachandran

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Aug 25, 2014, 9:12:15 AM8/25/14
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Dear,

Regarding point 2, as you have said, 

The tack welding is going to be removed.? so the welder may or may not be qualified.? Kindly suggest.

Point 2-As per code you need to qualified welder for tack weld also because it depends whether tack become part of welding aur you are going to remove it also material, service conditions of equipment.

BR
Dhanabal Jalachandran
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Regards
Dhanabal Jalachandran

Shridev Kurup

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Aug 26, 2014, 12:02:02 AM8/26/14
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Tack.1 ..Removal type no need because that potrion welded by unqualified welder does not going to be included in final weld.

Tack 2.Non removable type  Qualified welder required as per code.

So it is important you note what type of tacking is ongoing. Like...Bridge tack or something else. Again manufacturer can say they going to remove these unqualified welder welded tacks during the welding.

Regards
Shridev

Kannayeram Gnanapandithan

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Aug 28, 2014, 10:54:45 PM8/28/14
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tack welder qualification is not mandatory as per ASME Sec 9

THANKS & BEST REGARDS
KG.PANDITHAN, AWS-CWI, CSWIP 3.1
CONSULTANT-WELDING & QUALITY

george....@gr.bureauveritas.com

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Aug 29, 2014, 2:55:36 PM8/29/14
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You will not find in the Code the term "tack welder".
The Code is addressing only tack welds. "Tack Welders" are not addressed by the Code.
If tack welds remain in place, then they have to be performed by qualified welders


    best regards

    Dr. Georgios Dilintas

    Authorized Nuclear Inspector
    Authorized Inspector Supervisor


    I&F REGIONAL TECHNICAL MANAGER
    BUREAU VERITAS HELLAS

    Tel: +30 210 40 63 113/4
    Fax: +30 210 40 63 118
    Cell: +30 69 44 64 62 04
    (See attached file: Dilintas_George.vcf)

Inactive hide details for Kannayeram Gnanapandithan ---29/08/2014 06:05:44---tack welder qualification is not mandatory as per Kannayeram Gnanapandithan ---29/08/2014 06:05:44---tack welder qualification is not mandatory as per ASME Sec 9 THANKS & BEST REGARDS



From: Kannayeram Gnanapandithan <kgpan...@gmail.com>
To: materials-welding <material...@googlegroups.com>
Date: 29/08/2014 06:05
Subject: Re: [MW:21739] Welder Qualification
Sent by: material...@googlegroups.com




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rajesh s. mhaske ,Engineer Welding ,PUNE,INDIA

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Aug 30, 2014, 12:04:50 AM8/30/14
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Dear sir
 Plz refer Following
QW-301.2 Qualification Tests.
 Each manufacturer or contractor shall qualify each welder or welding operator for each welding process to be used in production welding and also refer following Interpretation

Interpretation: IX-77-04

Subject:             Section IX, Tack Welder Qualification

Date Issued:      January 31, 1977

File:                  NA

 

   Question:  May a welder be qualified as a tack welder if his tack welds were a part of another

welder's qualification test coupon or part of another welding procedure qualification test which

met the intent of the Code?

 

   Reply:  The Code requires that all welders, (including tack welders), must be qualified per

Section IX.

      Dear,

      Regarding point 2, as you have said, 

      The tack welding is going to be removed.? so the welder may or may not be qualified.? Kindly suggest.

      Point 2-As per code you need to qualified welder for tack weld also because it depends whether tack become part of welding aur you are going to remove it also material, service conditions of equipment.

      BR
      Dhanabal Jalachandran


      On Mon, Aug 25, 2014 at 12:14 PM, Mohit Aggarwal <aggarwa...@gmail.com> wrote:

        Dear,

        Point 1 If a welder is qualified in CS for GTAW process then he is qualified for SS with gas backing Argon because for GTAW process deletion of gas backing is essential variable if you carefully go through CODE and for GTAW filler wire SS and CS
        both falls in F NO 6 AS given in code. So CS qualified welder cam make weld in SS and for P no welder is qualified to weld in P1-P15, P34, P41-P43 etc. As per code.

        Point 2-As per code you need to qualified welder for tack weld also because it depends whether tack become part of welding aur you are going to remove it also material, service conditions of equipment.

        Point the 3-If both codes requiement filled and after client approval welder is qualified.
        Best Regards,
        Mohit Aggarwal.

          Gent's,

          Kindly need your advice to clear one issue based on Welder Qualification.? These questions were asked to me yesterday in Aramco Interview.
          • If a welder is qualified with CS, can he weld SS.? ( i answered he cannot as F4 and F5 doesn't allow as per ASME Sec IX), but the interviewer told me it can be welded in GTAW with some kind of Gas i forgot the name of it. but i have gone through all the reference code i dont find any as P number and F number are essential variable.
          • Welder requires tack welding qualification in ASME Sec IX or AWS D 1.1.? As per ASME Sec IX all the welders need to be qualified. As our company manufactures only Tanks and Vessels not much involved with AWS D 1.1, is there any applicable stuff where specifically welder needs to be qualified for Tank welding if he is not qualified welder.??
          • If a welder is qualified with ASME Sec IX, can he weld the jobs with the code based on AWS D 1.1.? I have answered yes it's possible as the requirements need to be followed, i.e., Essential variable, Client approval as per AWS D 1.1 Clause 4.2.2.1
           
          Regards
          Dhanabal Jalachandran


           
          The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
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        The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
        ---
        You received this message because you are subscribed to the Google Groups "Materials & Welding" group.


       
      The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
      ---
      You received this message because you are subscribed to the Google Groups "Materials & Welding" group.


     
    The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
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Syed Mahmud Habibur Rahman

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Oct 8, 2014, 12:04:04 AM10/8/14
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Hi, my comments are in Red
 
  • If a welder is qualified with CS, can he weld SS.? ( i answered he cannot as F4 and F5 doesn't allow as per ASME Sec IX), but the interviewer told me it can be welded in GTAW with some kind of Gas i forgot the name of it. but i have gone through all the reference code i dont find any as P number and F number are essential variable. He can according to ASME IX QW-423.1.
  • Welder requires tack welding qualification in ASME Sec IX or AWS D 1.1.? As per ASME Sec IX all the welders need to be qualified. As our company manufactures only Tanks and Vessels not much involved with AWS D 1.1, is there any applicable stuff where specifically welder needs to be qualified for Tank welding if he is not qualified welder.?? There is no mention for tack welding qualification in ASME but AWS D1.1 requires tack welding qualification (Part C, 4.32)
Hope this answers your question.
  • If a welder is qualified with ASME Sec IX, can he weld the jobs with the code based on AWS D 1.1.? I have answered yes it's possible as the requirements need to be followed, i.e., Essential variable, Client approval as per AWS D 1.1 Clause 4.2.2.1. Yes he definitely does as ASME IX is more strict and specific to the requirements compared to AWS D1.1.
    Fax: +30 210 40 63 118
    Cell: +30 69 44 64 62 04
    (See attached file: Dilintas_George.vcf)
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