FILLET WELD QUALIFICATION BY BUTT WELD AS PER API 1104

[NAJM UL ISLAM]

Dear Experts,

Greetings,

 

Can somebody advise me that if a welder is qualified for butt weld either in 5G position (Pipe horizontal) or 2G position (Pipe Vertical) whether  he will be qualified for fillet welds or not.

 

Thanks & Regards

 

NAJM UL ISLAM

[Mahmoud]

Yes

Regards

Mahmoud Qreis

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[Suresh]

Mr.Islam ,

 

Your query is not correct ...5G position tells you that pipe is rotating but electrode is constant at 45 degrees

                                        2G position is tells you that pipe should be horizontal  position ..not in vertical ...

 

If the welder is qualified in buttwelds in limited thickness ...welder can qualify for all filletwelds ..unlimited thickness..

 

Thanks

 

Suresh

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Thanks  & Best Regards,

Suresh

Mobile No: 91-92 92 905 905

[Dinesh Somwanshi]

yes ,consider the position also.

regards

[Ramin Kondori]

Dear Suresh:

Please recheck your response...
in 5G pipe is rotating...?!!!
in 2G pipe is horizontal...?!!!

Ramin  Kondori

   QC/Welding Engineer 

         IWE AT 0070

   

[lakshman kumar]

Dear All

 

Greetings  today

 

Why all the experts are in confusion----

 

1.      5G - pipe will not rotate – it is fixed position in horizontal condition.

2.      2G – Pipe is vertical – fixed condition – not a rotating situation –

3.      1G – is rotating – pipe horizontal

 

As per QW-461.9

PERFORMANCE QUALIFICATION — POSITION AND DIAMETER LIMITATIONS

(Within the Other Limitations of QW-303)

 

For 2G & 5G qualified welders(Either any of one) – fillet weld qualification will come by default – no need for further requalification

Thanks and Regards................?

Lakshman Kumar.B|Manager- QA/QC |Lanco Infratech Limited Plot No 1255 | Sanjeevani chowk | Mahanadi vihar | Cuttack 753004 Phone : + 91 671 2445033 | Mobile : +91 9937286851 |www.lancogroup.com Go Green|The future will thank you

Please note that my "Lanco group" mail is not working properly at some times, request you keep a copy to personal mail ID lakshma...@gmail.com

[rems.o...@gmail.com]

Yes the welder is qualified to perform fillet weld.

Suresh,
Note that in 5G position, the pipe is fixed with the axis in horizontal plane. It is in 1G that you rotate the pipe and keep the electrode constant.

Regards

Rems

Sent from my BlackBerry wireless device from MTN

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From: Suresh <bobsu...@gmail.com>

Sender: material...@googlegroups.com

Date: Sun, 31 Jul 2011 19:22:38 +0530

To: <material...@googlegroups.com>

ReplyTo: material...@googlegroups.com

Subject: Re: [MW:12008] FILLET WELD QUALIFICATION BY BUTT WELD AS PER API 1104

[Fitria Rahman]

yes, it can. please refer to QW-461.9 Sec IX code. a 5G welder qualifies for fillet weld plate and pipe.

Rgds,

2011/7/31 NAJM UL ISLAM <najmis...@gmail.com>

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[Suresh]

Dear All ,

 

Appolizes to all , Im bit confused ..my concept is correct but my typing bit wrong ...

 

Dear Rems ...Thank you for your concern .

 

Suresh

[NAJM UL ISLAM]

Mr. Suresh,

Thanks,

See exact detail below, I hope now it be clear:

 

Position is Fixed, pipe horizontal (like 5G in ASME IX) or

Position is Fixed, pipe Vertical (like 2G in ASME IX)

 

If you could give some reference it will be very helpful to me.

 

Regards,

 

NAJM UL ISLAM

 

From: material...@googlegroups.com [mailto:material...@googlegroups.com] On Behalf Of Suresh
Sent: Sunday, July 31, 2011 4:53 PM
To: material...@googlegroups.com
Subject: Re: [MW:12008] FILLET WELD QUALIFICATION BY BUTT WELD AS PER API 1104

 

Mr.Islam ,

[NAJM UL ISLAM]

Dear All,

My question was for API 1104 code not for ASME IX  (I know as per ASME no further qualification is required once welder is qualified for butt weld.

 

Regards,

NAJM UL ISLAM

[Karthik]

hi, 01. Please find herewith the attached file of pages from API1104 for your reference. As per API1104 - 6.2 and 6.2 (f) "Single Qualification Method, A Welder who successfully passes the butt weld quafication test in a fixed position with the axis inclined 45degrees from the horizontal plane shall be quafied to do butt welds and lap fillet in all positions. 02. As per API1104 - 6.3 "Multiple Qualification Method" (Butt weld as per the single qualfication and additionally a branch weld also) as per 6.3.1 of API1104,he can be quafied for all position and all thickness etc., Thanks & Regards, (Karthik) Karthikeyan.S QA/QC Manager Getabec Energy Co.,Ltd. 379,Moo6,Soi8,Nikhomphatana, Rayong-21180, Thailand. Phone: 0066 38 897035-8 (Off) Fax: 0066 38 897034 Hand Phone: 0066 892512282 --- On Tue, 8/2/11, NAJM UL ISLAM <najmis...@gmail.com> wrote:

[Eduardo Calva]

Hi dears, could you please tell me if according to API-1104, DNV, etc. the range for hi-low must be indicated in the wps and being a essential variable?
 
A client was asking about qualifying a coupon for minimum hi-low and one for the maximun hi-low in order to have a range qualified, but how does the level of hi-low affect in a welded joint?
 
Also in order to avoid hi-low levels to exceed the range we must to make sure the correct ovality of the pipes.
 
Thanks for your time and help

Eduardo Calva

 

[pgoswami]

Hi Eduardo,

 

See the extracts from API-1104 and DNV-OS-F101 for your reference.Both calls for a control of offset during welding.API calls fro a control during production weld, while DNV diplomatically puts forth this requirement, in Table C-2, clause, 6(a) and 7(e).

 

One good way to tackle the problem would be to counterbore the pipes, to keep the offset to the required minimum.If that's achievable the there's no need for separate PQR's with  different Hi Lo's.

 

Basically a change of hi-lo would alter the penetration profile for single sided FP joints, which is followed  for most of the pipes.Needless to elaborate for excessive high-los the radiographic quality  would suffer.

 

I would think a discussion with the client in line with the requirements of API and DNV spec would be useful

 

Thanks.

 

Pradip Goswami,P.Eng.IWE

Welding & Metallurgical Specialist & Consultant

Ontario,Canada.

Email-pgoswami@sympatico.ca,

pgos...@quickclic.net

 

API 1104-

7.2 ALIGNMENT

The alignment of abutting ends shall minimize the offset between surfaces. For pipe ends of the same nominal thickness, the offset should not exceed 1/8 in. (3 mm). Larger variations are permissible provided the variation is caused by variations of the pipe end dimensions within the pipe purchase specification tolerances, and such variations have been distributed essentially uniformly around the circumference of the pipe. Hammering of the pipe to obtain proper lineup should be kept to a minimum.

 

 

 

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From: material...@googlegroups.com [mailto:material...@googlegroups.com] On Behalf Of Eduardo Calva
Sent: Saturday, August 06, 2011 11:22 AM
To: material...@googlegroups.com
Subject: [MW:12130] Hi-low into WPS

[Eduardo Calva]

Thanks so much my friend. Your support is always welcome and appreciated.
 
The bad thing is when the joints are for pipelay and you can not do anything to counterbore the pipes, because even though the ovality is correct in all of the pipes; one of the these with the highest ovality permited can match with that with ovality "zero" and having more offset than permited.

Eduardo Calva

 

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From: pgos...@quickclic.net
To: material...@googlegroups.com
CC: eduard...@hotmail.com
Subject: [MW:12133] RE: 12130] Hi-low into WPS
Date: Sat, 6 Aug 2011 20:18:45 -0400