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
|
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Best Regards,
Anna.Murugesh.
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