Re: [MW:15548] Need clarification for Welder qualification as per ASME Sec 9 for IS 2062 Gr.B
Nandesh Kumar
| Gopal, The information you provided is incomplete. Enter all required information in the (link provided below) calculator and know the ranges. http://www.gowelding.com/wp/calc3.htm Respectfully, Nandesh Kumar A --- On Wed, 10/10/12, Gopalakrishnan G <gopa...@gmail.com> wrote:
|
John Henning
See QW-403.6 Qualified thickness of base metal is T to 2T or 6mm to 12mm. Assuming that the weld was made entirely with SMAW, the maximum deposited weld metal thickness would be 2t or 12mm.
Note that QW403.6 says: “The minimum base metal thickness qualified is the thickness of the test coupon T or 16mm whichever is less. However, where T is less than 6mm, the minimum thickness qualified is ½T. . . .”
Since the thickness is not less than 6mm, the qualified minimum base metal thickness is T.
(Yah – it sucks.)
John A. Henning
Welding & Materials
From: material...@googlegroups.com [mailto:material...@googlegroups.com] On Behalf Of Gopalakrishnan G
Sent: Wednesday, October 10, 2012 9:05 AM
To: material...@googlegroups.com
Subject: [MW:15548] Need clarification for Welder qualification as per ASME Sec 9 for IS 2062 Gr.B
I have Qualified PQR and WPS (with Impact test) for IS 2062 Gr B (P .No = 1 & G .No = 1) material (Process = SMAW)
Plate Thickness = 6 mm.Please clarify my following doubts
1) What will be my Qualification range for Deposit thickness for each process?
2)What will be my Base metal Qualification Range?
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sreedhar ch
ms viswanathan
Dear All,
Please clarify, for welder certification reneval NDE back up is required or weld inspection reports is enough as per sex IX.
In project NDE is not required , so we are not taken NDE for welders , how we can renew welders certificate?
Please tell clearly
Regards, M.S.V
|
Rudolf
Sent from my iPhone
--
G Sreenivas Rao
Dear MSV
Regards
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Vino Varghese
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ms viswanathan
Dear Rao,
If the welder is having 6 month continuty welding and weld inspection report as a proof , then why NDE is required?Wher it is mentioned NDE is must for renewal as per sex-IX. Regards, M.S.Viswanathan --- On Sat, 10/13/12, G Sreenivas Rao <gsrin...@gmail.com> wrote: |
ms viswanathan
Dear Rudolf,
If we produce weld inspection reports for 6 month or lesser, can we renew the certificate. Regards, M.S.Viswanathan --- On Sat, 10/13/12, Rudolf <rudol...@yahoo.com> wrote: |
Sandeep K P
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Rudolf
Sent from my iPhone
c sridhar
From: ms viswanathan <msviswan...@yahoo.com>
To: material...@googlegroups.com
Sent: Saturday, 13 October 2012 3:33 PM
Subject: [MW:15598] Welder certification reneval as per sex-IX
ms viswanathan
Dear Sridhar,
Where it is mentioned in Sec IX , NDE is required for welder certification renewal?.Please refer QW-322.1 a. & 322.2 a.
Regards, M.S.Viswanathan --- On Sat, 10/13/12, c sridhar <sridh...@yahoo.com> wrote: |
|
kannayeram gnanapandithan
usaage of his qualified welding process. In that case No NDE is
required, u have to maintain welder log descriping project,
components,materials,filler date/shift and welding process. Based on
welder log, u may have to maintain welder continuity for year and
mention his engagement on that process. If continuely engaged and
present in ur roll u need not give any reneval certificate
Pandithan
In-Charge/WT
Cethar Ltd
kannayeram gnanapandithan
keep records for engagement of welders for his qualified process, that
is enough as per Section 9
Pandithan
S DAS Arun RSHT-2
Dear Vishwanathan,
As per ASME Sec.IX
QW-322 Expiration and Renewal of Qualification
QW-322.1 Expiration of Qualification. The performance
qualification of a welder or welding operator shall be
affected when one of the following occurs:
(a) When he has not welded with a process during a
period of 6 months or more, his qualifications for that
process shall expire; unless, within the 6 month period,
prior to his expiration of qualification
(1) the welder has welded with that process using
manual or semiautomatic welding, under the supervision
and control of the qualifying manufacturer or contractor
or participating organization(s) as identified in QW-300.3;
that will extend his qualification for an additional 6 months
and in QW-300.3 NDT is mentioned for the welder qualification.
We have to ensure that essential variables mentioned on the qualifying WPS and the production details submitted are same and normally they can submit at least one NDT supporting documents for the same.
It is your clients discretion to decide on this case for a project where the NDT was not required, if he still insists for NDT means
But on the case of expiry again the code says….
QW-322.2 Renewal of Qualification
(a) Renewal of qualification expired under
QW-322.1(a) may be made for any process by welding a
single test coupon of either plate or pipe, of any material,
thickness or diameter, in any position, and by testing of
that coupon as required by QW-301 and QW-302. A successful
test renews the welder or welding operator’s previous
qualifications for that process for those materials,
thicknesses, diameters, positions, and other variables for
which he was previously qualified.
Providing the requirements of QW-304 and QW-305 are
satisfied, renewal of qualification under QW-322.1(a) may
be done on production work.
(b) Welders and welding operators whose qualifications
have been revoked under QW-322.1(b) above shall requalify.
Qualification shall utilize a test coupon appropriate to
the planned production work. The coupon shall be welded
and tested as required by QW-301 and QW-302. Successful
test restores the qualification.
Regards,
Arun
Grazie
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Thank you
John Henning
What are we talking about here? Are you questioning renewal of qualification after expiration/disqualification or are you questioning extension of qualification through welding continuity (which the Code also refers to as renewal).
In the former case, a weldor must perform a new qualification test. That test will be evaluated per the rules of Section IX (bend tests or volumetric exam per QW-302). That single test, on any thickness, in any position, with or without backing, will reinstate all previous qualifications held for the welding process tested.
In the later case, NDE is not required. The welder only needs to weld with the process every 6 months. How this is recorded or proved is not specified by ASME Section IX (See Interpretation IX-95-38).
The reference to QW-300.3 below is incorrect. This paragraph deals with how to use a single qualification test to qualify a weldor for multiple organizations/employers. If memory serves me correctly, the Code committee worked many years to respond to requests from United States craft unions and erection contractors to minimize the amount of qualification testing required. With the creation of this paragraph the “Common Arc” program was brought to fruition. It represents a compromise between those who felt that each employer perform their own qualification of weldors and those that believed a weldor should only have to qualify once and that qualification carry over to all employers. But, it has nothing to do with the issue of whether NDE is required for continuation of qualification.
Bottom line – if you are extending qualification by showing the weldor has been using the process, your QC manual should describe how that continuity is established or proved. However, Sc IX does not require NDE or any other examination to have been performed nor that it be specifically a production weld. Welding could be maintenance welds, non-code welds, or even practice/training welding. So long as it can be established that the weldor has been actively using the process his qualification is extended or renewed.
John A. Henning
Welding & Materials
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Grazie
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Thank you
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ms viswanathan
Dear Arun,
If the welder is not welded for 6 months as mentioned in QW322.1a, then his certfication is expired and retset is required for renewal as per QW 322.2. But it is not mentioned for certification renewal NDE is required. Regards, M.S.Viswanathan --- On Sun, 10/14/12, S DAS Arun RSHT-2 <Arun....@techint.it> wrote: |
Sudheer Babu
Preferred way is keep latest Radiography report which shows that welder is component enough to do the welding. If not other option is to do radiography on production test coupon which will confirm that welder is component enough to carry out the welding as previously qualified. If not we need to re test them
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ms viswanathan
Dear Mr John,
Thanks for your reply, This is what i expected.Thank you very much. Regards, M.S.Viswanathan --- On Mon, 10/15/12, John Henning <jhen...@deltak.com> wrote: |
SENTHILKUMAR SWAMINATHAN
S.SENTHILKUMAR
To: material...@googlegroups.com
Sent: Monday, 15 October 2012 6:33 PM
Subject: Re: [MW:15650] Welder certification reneval as per sex-IX
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S DAS Arun RSHT-2
Dear John,
I think my comments are mistook or my way presentation was not correct, apologies if so, the blue letters are my interpretations and the code I copied just for the reference.
“ We have to ensure that essential variables mentioned on the qualifying WPS and the production details submitted are same and normally they can submit at least one NDT supporting documents for the same.” Was my comment on the trailing mail, still if it is wrong please correct me.
My statement was “ they can” which was not used as required clause. Even a client or TPI signed weld report can be accepted for a renewal qualification in my opinion but the essential variables mentioned on the qualifying WPS and the production details submitted should be same.
Why a third party company or a client insisting these because, sometimes contractor may fabricate reports on urgency of the project. I am not accusing the entire industry but the precautions to eliminate the chances of mistakes.
Grazie
John Henning
I believe one needs to separate what the Code requires versus what an individual recommends or prefers. ASME Code says only that the welder has to have used the process in the past 6 months to maintain qualification for that process. In Interpretation IX-95-38, the Section IX Committee makes it clear that the Code is not going to specify how that is to be done. Let me will reiterate, for ASEM continuity: one does not have to have a weld with subsequent NDE, one does not have to use the WPS that used for qualification, one does not have to be welding production parts – the weldor only needs to have welded with the process. Your company can require anything in their QC manual.
The confusion arises because companies working primarily to European Codes or under the PED are using BS/EN 287-1. Clause 10.2, Prolongation, requires that the welds be production welds and that the welds be documented every 6 months with volumetric or fracture test results. The prolongation certificate must be verified and signed by the notified body inspector. Companies working primarily to this scheme will naturally have a different perception of what to expect of/for continuity records.
Since my company primarily works to ASME and only works a PED project every couple of years we choose not to maintain continuity per BS 287.1. Further there is the continuing high cost, per page, for each signature verification. (I, unflatteringly, refer to this as either welfare for the EU or EU trade protection, take your choice. The Europeans may take umbrage to this statement, but I am old, cranky, and entitled to my opinions. )
What my Company does is to have the weldor record daily the welding process and drawing number worked to on separate forms which are submitted to the welding engineer monthly. The welding engineer collates the forms and records, in C-Spec, the process and drawing number for the last instance reported for the month. A continuity summary report is issued each month so that weldors and production management know if a weldor is approaching the six month limit for any process and can plan accordingly. The information submitted by the weldors is spot checked against the weldors time keeping record. Every 6 months we submit the weldor records, the C‑Spec continuity summary sheet, and the past 6 months worth of forms to the Authorized Inspector (AI) for his review should he desire to do so. The individual forms are retained for one year. We feel this is more than adequate and exceeds any expectation implicit in the Section IX requirement for continuity.
S DAS Arun RSHT-2
Thanks John for the reply, I appreciate for copying the Interpretation IX-95-38 for our own information.
One more doubt for renewal only the process is the criteria or we have to consider thickness range and position also??
Thanks and Regards,
Grazie