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FOMA Bohemia is a traditional producer of industrial radiographic films INDUX and related accessories.

01:16 Jan-29-2001
Christine Olive
Re: Radiography of Tubes with Source on Tubes


 
1419 views
04:43 Dec-13-2000
Alan Beveridge
Radiography of Tubes with Source on Tubes

Does anyone have any information on a radiographic technique in which the source is placed onto the tube surface. Types of tubes are 2" OD, I believe the technique uses an Iridium source with a strength of 5 curies or less.

Any info on sensitivity, or who uses such a technique?

Regards,

Alan Beveridge


 
03:39 Dec-13-2000

Dent McIntyre

Consultant, NDE Manager NDELevel III/3
NDT Consultant,
Canada,
Joined Nov 1998
243
Re: Radiography of Tubes with Source on Tubes Alan:
Some years ago we used this technique on a nuclear piping job. The tiny Ir 192 source was so small we could actually perform panoramic shots and still meet Ug requirements. 2-2T was no problem.
How thick is the wall of these tubes?

Dent McIntyre
NDE Manager
B & W Canada

: Does anyone have any information on a radiographic technique in which the source is placed onto the tube surface. Types of tubes are 2" OD, I believe the technique uses an Iridium source with a strength of 5 curies or less.

: Any info on sensitivity, or who uses such a technique?

: Regards,

: Alan Beveridge




 
01:49 Dec-13-2000

Robert A. Day

Engineering
Milky Way Jewels,
USA,
Joined Nov 1998
40
Re: Radiography of Tubes with Source on Tubes


 
06:53 Dec-14-2000
Alan Beveridge
Re: Thickness ofTubes for Dent McIntyre : Dent,

Tube thicknesses vary from 3.4mm in reheater to 9.5mm in the final stage superheater.

Our local NDT companies have source sizes of 2mmx2mm, and 3mmx3mm Iridium.

Regards,

Alan Beveridge





 
04:49 Dec-14-2000

Dent McIntyre

Consultant, NDE Manager NDELevel III/3
NDT Consultant,
Canada,
Joined Nov 1998
243
Re: Thickness ofTubes for Dent McIntyre


 
05:25 Dec-15-2000
Alan Beveridge
Re: Radiography of Tubes with Source on Tubes : Dent,

Tube thickness varies from 3.4mm in our reheater to 9.5mm in the final stage superheater.

Regards,

Alan Beveridge

Alan:
: Some years ago we used this technique on a nuclear piping job. The tiny Ir 192 source was so small we could actually perform panoramic shots and still meet Ug requirements. 2-2T was no problem.
: How thick is the wall of these tubes?

: Dent McIntyre
: NDE Manager
: B & W Canada




 
03:52 Dec-20-2000
BobC
Re: Radiography of Tubes with Source on Tubes I regards to your question, you must first determine to which code, or to what specification you are to be in compliance with. ASME generaly requires anything below 3.5" od to be radiographed using a superimposed or eliptical technique. On the other end of the spectrum Gas piping code has essentially the same requirement. Most codes make provision for the engineer to approve alternate techniques, but in general you are going to want the smallest physical source that you can get. Hope some of this helps.



 
07:54 Sep-18-2001

Farshad Mobasher-Fard

Engineering
Nikan Machine,
Iran,
Joined Sep 2001
3
Re: Radiography of Tubes with Source on Tubes Re: Radiography of Tubes with Source on Tubes


 


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