[ RadSafe ] Offsite Dose Calculation Manual & Reg. Guide 1.109

Victor Anderson victor.anderson at frontier.com
Thu Mar 7 19:02:45 CST 2013


I'll go back and check guidance more closely, but dose is dose.  I wouldn't
leave offsite doses due to alpha emitters out of reports on offsite dose
calculations for any reason.  The whole point of doing offsite dose
calculations is to demonstrate compliance with regulations and technical
specifications.  In my opinion reporting alpha doses should be done and
those reports will be part of showing compliance with regulations and
technical specifications.  I'll look further into the reporting


-----Original Message-----
From: radsafe-bounces at health.phys.iit.edu
[mailto:radsafe-bounces at health.phys.iit.edu] On Behalf Of
JOHN.RICH at sargentlundy.com
Sent: Thursday, March 07, 2013 4:34 PM
To: radsafe at health.phys.iit.edu
Subject: [ RadSafe ] Offsite Dose Calculation Manual & Reg. Guide 1.109


It appears that the (US) Offsite Dose Calculation Manuals (ODCM) and Reg. 
Guide 1.109 do not address doses from airborne release and subsequent 
ingestion of alpha emitting nuclides (e.g., U, Pu, Am, etc.).  I haven't 
been able to find any guidance that explains why alpha doses do, or do 
not, need to be calculated.  It's clear that the quantity of alpha 
emitting nuclides need to be measured and reported.  However, nothing is 
said about what is supposed to be done with this information, other than 
reporting it. 

Anyway, this is a long-winded request for help.  Could somebody point me 
to a basis for leaving doses from alpha emitting nuclides out of the 
calculations of offsite doses.

thnx in advance  - -jmr

John Rich
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