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Thursday, October 6, 2011

Re: [MW:12631] RT film overlap


As per ASME SEC V it was never mentioned the minimum or maximum overlap required, the film can be overlap in many sections it can vary from dia and the thickness, overlap can be made extent to such that full weld area had to be covered through films, with optimum density and the matching of successive films can be made. generally the overlap of the films is made a minimum of 1" that is an general practice, but no where the overlap length has been mentioned in the standards

On Wed, Oct 5, 2011 at 4:37 PM, Jean Staton <Jean.Staton@metco-ndt.com> wrote:

I was always taught it is the O.D  x 3.14 divided by the number of cassettes or take the 0.D. x 3.14 and divided by whatever you want on the length of film, i.e. if you want 15" to show your area of interest then take the O.D. x 3.14 and divide by that and you will  know how many cassettes you will need to surround that pipe/vessel.

 

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Murugesh Nadar
Sent: Tuesday, October 04, 2011 2:06 PM
To: materials-welding@googlegroups.com
Subject: Re: [MW:12624] RT film overlap

 

minimum one inch on both the ends of the film.

On Tue, Oct 4, 2011 at 11:58 AM, mike ball <oiqsnig@yahoo.com> wrote:

look up formular for calculating diagnostic film lenght DFL or actual external circunfrence divided by no of exposures plus 100mm i.e 50mm on both ends.


From: Nandesh Kumar <nandeshkumar@rocketmail.com>
To: materials-welding@googlegroups.com
Sent: Tuesday, October 4, 2011 5:34 AM
Subject: Re: [MW:12620] RT film overlap

 

two inch on both the ends of the film.

 

Nandeesh

--- On Mon, 3/10/11, KASHKOUSHA <kashkousha1@yahoo.com> wrote:


From: KASHKOUSHA <kashkousha1@yahoo.com>
Subject: [MW:12611] RT film overlap
To: "materials-welding@googlegroups.com" <materials-welding@googlegroups.com>
Date: Monday, 3 October, 2011, 12:29 PM

Dear all

Please could any one explain the length of film overlap for pipe acc.to ASME V

Regrds

 

 

H.KASHKOUSHA

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Best Regards,
Anna.Murugesh.

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