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Regulations/Standards for Gamma rays Shielding
2

Regulations/Standards for Gamma rays Shielding

Regulations/Standards for Gamma rays Shielding

(OP)
Hello,  I am looking  for master  specifications or international regulations on Gamma  ray shielding for Industrial  Equipment.  The Radioactive isotope is Cobalt 60 and the  particular  equipment  is a radioactive concentration transmitter for  a dredge.

Thanks,

A.

RE: Regulations/Standards for Gamma rays Shielding

Have you looked on IAEA's site? (http://www.iaea.org/worldatom/ )  Don't know that there is a "master spec", it may be more that each country has its own regulations.  also try searching the code of federal regulation for gamma ray shielding (http://www.access.gpo.gov/nara/cfr/cfr-t...)

Patricia Lougheed

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RE: Regulations/Standards for Gamma rays Shielding

Hi ADAG,

Radiological protection to minimise doses to operators and the public involves more than shielding. Typically you look at distance, time of exposure AND shielding to optimise the design of your plant.

I would anticipate that most of the legal restrictions you will find will be to limit the dose rather than specify shielding thickness, however you could look in books on nuclear engineering to find attenuation coefficients of various materials.

Try the "Reactor Handbook 2nd Ed. Volume IV, Gamma Ray Attenuation", Blizard EP and Abbott LS, Interscience 1962 or "Introduction to Nuclear Engineering 3rd Ed.", Lamarsh JR and Baratta AJ, Prentice Hall 2001. The former is qute old but once you have located it have a look around the shelves and see what else is in the near vicinity! Since you have a cobalt source the energy of the gamma is well known but you will need to know the activity of the source to use the various graphs/tables.

Regards, HM.

No more things should be presumed to exist than are absolutely necessary - William of Occam

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