Re: Personal Dosimetry for Environmental Operations

[sandy_perle@email.fpl.com]

     Most commercial dosimetry badges will be able to measure natural 
     background, and in turn, identify exposures above these values. Your 
     valid requirement as stated, is to measure between 0.1 and 1 mrem. The 
     important factor then in over what time are you going to have to 
     measure the background to see these values. I would expect that with 
     the background levels that exist in your areas, you're talking about a 
     short period of time, on the order of days. In my area, our Panasonic 
     TLDs measure between 10 and 13 mrem for a 34 day period. Our 
     background readings are obviously lower than the Rocky Mountain area. 
     Therefore, determine the time period and then chose a dosimeter. I 
     have also used Harshaw TLDs and they adequately measure natural 
     background as well.. I'll let the film badge and other processors 
     address other dosimeters.
     
     Sandy Perle
     Supervisor Health Physics
     Florida Power and Light Company
     Nuclear Division
     
     (407) 694-4219 Office
     (407) 694-3706 Fax
     
     sandy_perle@email.fpl.com
     
     HomePage: http://www.lookup.com/homepages/54398/home.html


______________________________ Reply Separator _________________________________
Subject: Personal Dosimetry for Environmental Operations
Author:  radsafe@romulus.ehs.uiuc.edu at Internet-Mail
Date:    2/28/96 4:23 PM


RadSafers,
I am trying to obtain information on personal dosimetry that can accurately 
track exposures in the environmental background range.  The minimum reportable 
doses for the dosimetry I am currently using are: 20 mrem neutron, 10 mrem 
x-ray and gamma, and 40 mrem energetic beta.  Desired reportable doses would be 
in the range of 0.1 to 1 mrem.  If anyone has information regarding vendors, 
suppliers, or just a general clue please contact me.
     
Mark B. Mattheiss
Health Physicist
Dames & Moore, Inc.
Denver, Colorado
e-mail DENMBM@DAMES.COM
Phone 303-299-7911