Re: Petri Dishes for Air Sample Filter Transport?

["Dr. Neil Utting" <radprot@radprot.demon.co.uk>]

In message <9706121522.AA23499@romulus.ehs.uiuc.edu>, Michael P McDonald
<mpmcdon@sandia.gov> writes
>
>     Our management is thinking about using plastic petri dishes (two 
>     piece) for transporting air sample filters to the counting labs 
>     instead of the standard paper coin envelopes which are now in use. 
>     They want to make this change in an effort to minimize the "transfer" 
>     of radioactive material from the filter medium to the paper envelope.
>     
>     Has any other facility/plant done this, or thought about doing this 
>     and decided not to?  Why or why not?
>     
>     
>     Mike McDonald
>     Radiation Protection Training Project
>     Sandia National Laboratories
>     MPMCDON@SANDIA.GOV
>     (505) 844-0653

-- 
Dr. Neil Utting
What is your evidence that there is a transfer of radiactive material from th
efilter paper to the inside of the coin bag; have you actually assessed it?
Regards. Nei Utting radprot@radprot.demon.co.uk