Re[2]: Radon Question from Occ-Med-Env

[BRZGV@ccmail.ceco.com]

     The radon gas is the same concentration outside the mask as well as 
     inside.  Any particulate daughters will be the same concentration on 
     the inside as the outside due to continuous decay.  You may catch some 
     particulates in the filters, but they would only possibly serve to 
     give gamma dose to the face (immeasurable by far)?
     
     Glen


______________________________ Reply Separator _________________________________
Subject: RE: Radon Question from Occ-Med-Env
Author:  radsafe@romulus.ehs.uiuc.edu at INTERNET
Date:    7/1/96 11:17 PM


     
The only protection that may be offered from radon (a gas) is an air 
supplied respirator or a self contained breathing apparatus.  However, the 
radon is not the exposure problem, the radon progeny are the culprits and 
protection may be offered to some degree by a negative pressure respirator 
with a HEPA filter cartridge.
 ----------
From: radsafe
To: Multiple recipients of list
Subject: Radon Question from Occ-Med-Env 
Date: Monday, July 01, 1996 8:06AM
     
     
I copied this message from the occupational medicine BB. Perhaps RADSAFE 
could offer an answer.
*********
Hello,
     
I am looking for informations about the effectiveness of protective masks 
against radon and radon daugthers for workers exposed to concentrations up 
to
3000 Bq/m3 (81 Pico Curies/L).
     
Are there different ratios of protection ? 
What are the prices ?
     
     
Thanks in advance for your answers.
     
     
Jean-Claude Dessau, md
Medecin conseil
Equipe de sante environnementale
Direction regionale de la sante publique des Laurentides 
185, rue Durand
Saint-Jerome (Quebec)
Canada J7Z 2V4
     
Tel: (514) 436-5669, # 242
Fax: (514) 436-1761
e-mail: jcdessau@InterLink.NET