Re[2]: Tritium in exit signs and on watch dials

[Steven.Rima@DOEGJPO.COM (Steven Rima)]

     I'm not sure if the NRC limit listed by Bill is relatively new, since 
     this isn't my area of expertise, but I have an older Timex watch from 
     the early 80's, that clearly states on the back that it contains "200 
     mCi 3H". It also has the trefoil symbol on the back. I quit wearing it 
     after a radiochemistry lab manager "borrowed" it for a few days and 
     found detectable tritium leaching out of it. It does glow nicely in 
     the dark... :-)
     
     Steven D. Rima, CHP, CSP
     Manager, Health Physics and Industrial Hygiene
     MACTEC-ERS, LLC
     srima@doegjpo.com


______________________________ Reply Separator _________________________________
     Bill Lipton wrote, in part:
     
watch dials - see pages 9ff - The NRC limit is 25 mCi per watch.  In 
practice, 
     the average activity is less than 2 mCi.
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