Re: Radon equilibrium factor

["Riasp Medora" <riasp.medora@fernald.gov>]

The reference for indoor and outdoor equilibrium factor is the UNSCEAR (United 
Nations Scientific Committee on the Effects of Atomic Radiation) Report 1993.  
The indoor value is 0.4 and the outdoor is 0.8.

Riasp Medora
riasp_medora@fernald.gov

______________________________ Reply Separator _________________________________
Subject: Radon equilibrium factor
Author:  radsafe@romulus.ehs.uiuc.edu at FE-INTERNET
Date:    12/19/97 6:09 AM


Can anybody advise on the equilibrium factor to use for outdoor radon?
     
Radon equilibrium factors for indoor and outdoor air are often quoted as 
0.4 and 0.8 respectively.
ICRP65 use 0.4 for indoor air,  but I do not have a good reference for 
outdoor air.  Is the equilibrium factor seasonal? How variable is it?
     
Andries Leuschner
andries.leuschner@pixie.co.za