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MicroShield Exposure Estimates
I would have sent this question to MicroShield (MS) (Grove/Framatome), but they don't accept registration on their WWW users' group unless you have the latest version. They also haven't responded to my direct E-mails.
We often do calculations involving NORM radionuclides and have found that MS appears to give exposure estimates that are larger (by 20% or more) than one would obtain from other references e.g.. for Ra-226 in soil. In fact, the MS estimate for a point Ra-226 source (and decay products) is about 10% larger than the 0.825 R/h per Ci at 1 m given in the Radiological Health Handbook.
Is this the "latest" value for a point Ra-226 source? Has anybody else found similar discrepancies with MS?
Leo M. Lowe, Ph.D.
Senior Health and Environmental Physicist
SENES Consultants Limited
121 Granton Drive, Unit 12
RICHMOND HILL, Ontario
Canada L4B 3N4
Tel: (905) 764-9380
Fax: (905) 764-9386
Email Address: llowe@senes.on.ca
Web Site: http://www.senes.on.ca/ ************************************************************************ The RADSAFE Frequently Asked Questions list, archives and subscription information can be accessed at http://www.ehs.uiuc.edu/~rad/radsafe.html