Joint preparation-root gap

[lukman hakim]

Dear All, I have problem in joint preparation. According to design drawing & WPS the root gap for welding 48mm carbon steel plate by SMAW process is 3 mm, but actual we have gap more than 10 mm. This welding is for pressure vessel (ASME VIII Div.2).  Can we weld this joint with gap more than 10 mm? as per ASME IX for SMAW process root gap is not essential variable. Thanks Best regard, Lukman

[george....@gr.bureauveritas.com]

You are allowed but you have to revise your Wps without a new PQR.
For the realization you should start with some buttering to reduce the gap
Best regards
Dr Georgios Dilintas
Authorized Nuclear Inspector
Authorized Inspector Supervisor
HBS Regional Technical Manager

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[hitesh patel]

You are right , root gap is not a essential verialble for PQR under ASME Sec. IX , but as far as root fusion is concern , you have to take care that you will get proper fusion with this much gap.

 

Thanks

Hitesh Patel

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[lukman_h...@yahoo.com]

Dear Georgios dilintas,

Thanks for your response.

If we have to revise our wps, what we have to revise?
How width maximum permissible gap for buttering as per asme IX?
And how width maximum permissible gap for joint preparation allowable by asme IX? Thanks

Best regards,


Lukman

Sent from my BlackBerry®
powered by Sinyal Kuat INDOSAT

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From: george....@gr.bureauveritas.com

Sender: material...@googlegroups.com

Date: Tue, 15 Nov 2011 12:30:52 +0100

To: materials-welding<material...@googlegroups.com>

ReplyTo: material...@googlegroups.com

Subject: Re: [MW:12986] Joint preparation-root gap

[pradip kumar sil]

Dear,
You can proceed with new wps without making new PQR. I faced this
problem in my Project.
Regards
Sil

On 11/16/11, lukman_h...@yahoo.com <lukman_h...@yahoo.com> wrote:
> Dear Georgios dilintas,
>
> Thanks for your response.
>
> If we have to revise our wps, what we have to revise?
> How width maximum permissible gap for buttering as per asme IX?
> And how width maximum permissible gap for joint preparation allowable by
> asme IX? Thanks
>
> Best regards,
>
>
> Lukman

> Sent from my BlackBerryŽ

> powered by Sinyal Kuat INDOSAT
>

> -----Original Message-----
> From: george....@gr.bureauveritas.com
> Sender: material...@googlegroups.com
> Date: Tue, 15 Nov 2011 12:30:52
> To: materials-welding<material...@googlegroups.com>
> Reply-To: material...@googlegroups.com
> Subject: Re: [MW:12986] Joint preparation-root gap
>
> You are allowed but you have to revise your Wps without a new PQR.
> For the realization you should start with some buttering to reduce the gap
> Best regards
> Dr Georgios Dilintas
> Authorized Nuclear Inspector
> Authorized Inspector Supervisor
> HBS Regional Technical Manager
>
>

[rahul m]

dear friends,

                    as root gap is not an essential variable ,the only requirement is to revise the WPS.but also we have to make sure that the welder is of that capable to attain a weld without defects.

best regards ,

RAHUL M

On Wed, Nov 16, 2011 at 6:18 AM, <lukman_h...@yahoo.com> wrote:

Dear Georgios dilintas,

Thanks for your response.

If we have to revise our wps, what we have to revise?
How width maximum permissible gap for buttering as per asme IX?
And how width maximum permissible gap for joint preparation allowable by asme IX? Thanks

Best regards,


Lukman

Sent from my BlackBerryŽ