The proposed Groove design shown in ASME B31.3 is commonly used with successfull results (ofcourse if other things are in the way it should be), It's not mandatory but the recommended one since ASME team do lots of practical and theoratical analysis to provide the best practice one could follow, If your Contractor is confident enough and has successfully welded heavy thickness like this before, then you could allow him to do so.
Regards
Manpreet Singh
On Mon, 14 Feb 2011 16:03:53 +0530 Ahmed Husain <ahmraha@yahoo.com> wrote
>
>Dear Mr.Babu,
As per ASME B16.25, Para 3.1C, I think this requirement of compound bevel is mandatory.
Please let me knowif my interpretationis correct or not ?
>
>
Regards,
Ahmed Husain>Mob-0547170325
>
>
From: Kathalingam Babu <kathalingam.qaqc@ppl.com.sg>
>To: materials-welding@googlegroups.com
>Sent: Mon, February 14, 2011 11:47:11 AM
>Subject: Re: [MW:9872] Groove design and bevel
>
>
Dear Ahmed,
Is the ASME 16.25 would coverbevel preparation forthe pipe orfittings ?
As per my understanding that, Fig 328.4.2 is the typical examples only. Not an mandatory.
Regards,
K.Babu
Thanks & Regards,
K. Babu
>----- Original Message -----
>----- Original Message -----
--From: Ahmed HusainTo: materials-welding@googlegroups.com" rel=nofollow target=_blank ymailto="mailto:materials-welding@googlegroups.com" target=_new>materials-welding@googlegroups.comSent: Monday, February 14, 2011 4:24 PMSubject: Re: [MW:9871] Groove design and bevel
>Dear Bharat/Manpreet,At our project, what ever fiiting and pipewere received, it have compound bevels, but bevel prepared at site are single bevel. So it is quite common to see joint fit-upwhere onecomponent with compound bevel and joining component with single bevel.Is this a acceptable? Contractor says since groove design is non-essential variablein WPS, sosuch fit-up are acceptable.My concern is that sincecompound bevel is mandatory as per ASME B16.25, Contracor should follow the requirement of this code.What is your opinion in this regard.Ahmed Husain
>
>Mob-0547170325
>
>
From: BHARAT GOLE <bharatgole@hotmail.com>
>To: Material Welding <materials-welding@googlegroups.com>
>Sent: Mon, February 14, 2011 10:23:40 AM
>Subject: RE: [MW:9867] Groove design and bevel
>
> Dear Manpreet,
>I would like to share my experience realted to same issue which is raised by Mr. Husain.
>In our previous project we received fittings thickness greater than 22 mm with compound bevel .However pipes received with single bevel.Then contractor propose to do compound bevel for pipes with additional work and of course with extra cost.
>Construction code ASME 31.3 & approved WPS was without Impact, with PWHT as per ASME IX .
>WPS/PQR was qualified by Ludwing (one of reputed TPI ) showing various combination of joint configurations.Based on that we told contractor to go ahead with welding as it is - i.e.one side compound bevel & other side single bevel
>So there was big noise between contractor & us....contractor was not ready to weld joint like that
>Please let me know then my interpretation was correct or not ?
>Warm regards
>
>Bharat
>
>
>
>
>
>
Date: Mon, 14 Feb 2011 06:28:05 +0000
>To: materials-welding@googlegroups.com
>Subject: Re: [MW:9866] Groove design and bevel
>From: manpreetsin88@rediffmail.com
>
>Dear Husain,
>
>I guess your design code is ASME B31.3, ASME Sec ix do not go into process details (bevel preparation etc.)
>
>With reference to the butt end preperation shown in Fig 328.4.2 , Manufacturer has provided pipes withcompound bevel as required by code, now you need to confirm whether bevel preperation done at site is in accordance with Fig 328.4.2.
>
>Regards
>Manpreet Singh
>
>
>
>On Sun, 13 Feb 2011 21:42:00 , Ahmed Husain <ahmraha@yahoo.com> wrote
>Ahmed HusainDear All,
I have a query, kindly share your valuable knowledge on this subject.
1-As per ASME IX, Table QW-253 and QW-256, groove design is non-essential variable for SMAW and GTAW welding.
2-As per ASME B31.3, Fig 328.4.2 and ASME B16.25 Fig 3 and 5 (also Para 3.1C), components having thickness above 22 mm shall have compound bevel.
I would like to know that if the requirements of ASME B31.3 and 16.25 as stated above are mandatory? Because as per SEC IX, it is non-essential variable.
What I have observed at site, all pipes and fitting above 22 mm thickness have compound bevel from manufacturer, but all bevel prepared at side are single bevel. Is this acceptable?
>
>Mob-0547170325
>
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