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RE: [MW:12760] RT density

By Materials & Welding

The only where I see that 1.3 is allowed is for composite viewing.

 

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of pankaj kolhe
Sent: Saturday, October 22, 2011 11:42 AM
To: materials-welding@googlegroups.com
Subject: Re: [MW:12753] RT density

 

But somewhere i have read that on overlapped area minimum density required is 1.3 is it true?
pankaj

On Sat, Oct 22, 2011 at 12:18 AM, Jean Staton <Jean.Staton@metco-ndt.com> wrote:

Referring to ASME V, Art. 2 T-282.1 & 282.2 I understand it to read that the “area of interest” (and IQI) can not exceed 2.0 to 4.0.  What is your area of interest, is it between the location markers, is it the weld, heat affected zone, base metal, how much “area of interest” do you have?  I have one level III that has said “area of interest” is between position/location markers, while other Level III’s have said it’s the area that you are interested in.  Spelling it out in the Procedure would be ideal.   

 

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of meisam shokri arfaei
Sent: Friday, October 21, 2011 1:15 AM
To: materials-welding@googlegroups.com
Subject: Re: [MW:12737] RT density

 

Dear Pankaj,

Any NDT related work shall have a written procedure. These procedures may be in accordance with one or more codes or standards which support the user for some special works. In those procedures special situation for the work shall be defined. the first place that you have to search for such information about overlap of films is in written procedures.

But in general, there is a qualified range of film density that the interpreter can evaluate radiographic film in this range. The overlap shall be in such a way that each part of the film that is out of this range (usually lesser in density) repeats in next shoot within the in-range film density.

 

Regards

On Thu, Oct 20, 2011 at 10:38 PM, Nandesh Kumar <nandeshkumar@rocketmail.com> wrote:

Dear Pankaj,

 

Film overlap is given only for identification purpose that the same weld is continued.

 

Dont measure the density on the overlapped lighter area. Measure the density on un overlapped area of the previous film.

 

Its a general knowledge and no code says anything about that, as far as I know.

 

Nandeesh

 



--- On Thu, 20/10/11, pankaj.kolhe15 <pankaj.kolhe15@gmail.com> wrote:


From: pankaj.kolhe15 <pankaj.kolhe15@gmail.com>
Subject: [MW:12728] RT density
To: "pgoswami" <pgoswami@quickclic.net>, "materials-welding" <materials-welding@googlegroups.com>
Date: Thursday, 20 October, 2011, 3:09 PM

 

Dear sir,
what is the density requirement at overlapped area , if the two films
got overlapped
for gamma rays and where it is written

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--

M. Shokri Arfaei

International Welding Engineer (IWE)

ASNT NDT Level III

ERI Metallurgy Lab. Manager

Tel: +98-21-66283696

Fax: +98-21-66283693

 

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