Re[2]: radiopharmaceutical patient release

[John_McCarthy@bedison.com (John McCarthy)]

     Forgive me, but I do not believe the final rule addresses continuous 
     and occasional exposure for members of the general public [see Vol. 
     56, No. 98, May 21, 1991]. Although ICRP-26 originally provided a 
     differentiation of limits for long-term vs short-term transient 
     operation, the final rule notes that the ICRP had modified it's 
     philosophy changing the 100 mrem/year value to a primary limit.
     
     As I interpret 10CFR20 and the final ruling, 100 mrem/year is the 
     limit. The 500 mrem/year limit is available to older licensees and is 
     intended to be temporary after approval by the commission.
     
     Feel free to contact me with a reference for your interpretation.
     
     Jack McCarthy 


______________________________ Reply Separator _________________________________
Subject: Re: radiopharmaceutical patient release
Author:  radsafe@romulus.ehs.uiuc.edu at Internet
Date:    2/7/97 6:00 PM


100 mrem/y to a member of the general public is the limit for continuous
exposure. 500 mrem is still the limit for occasional exposure; although I
believe the NRC requires that the licensee request permission, in advance, to
apply it.

Chris Alston
ccja@aol.com