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887 views
07:10 Nov-13-2004

William Blum

Consultant, Training, Level III Services
NDT Consulting Group Inc.,
USA,
Joined Nov 2000
89
Specific Gamma Constant Intensity

One reference (Gamma Radiation Safety Study Guide, Second Edition, Joe Bush) gives the above for IR192 as 5.2 R/hour at one foot. Another (Gamma Radiography, AEA Technology) states 5.9 R/hour at one foot. Can anyone give a good reference that might tell me which is correct or at least explain the discrepancy?

Thanks,




 
01:45 Nov-14-2004
Buddy
Re: Specific Gamma Constant Intensity ----------- Start Original Message -----------
: One reference (Gamma Radiation Safety Study Guide, Second Edition, Joe Bush) gives the above for IR192 as 5.2 R/hour at one foot. Another (Gamma Radiography, AEA Technology) states 5.9 R/hour at one foot. Can anyone give a good reference that might tell me which is correct or at least explain the discrepancy?
: Thanks,
------------ End Original Message ------------
Hello Bill!

The correct exposure rate is 5.9R/Hr/Ci @ 1'. This is the rate I've always used. Kodak gives the rate as .55R/Hr/Ci @ 1 meter. Do the math and it works out. Folow this link:

http://www.kodak.com/cluster/global/en/service/pubs/kpro/radiography/W37_02.shtml




 


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