re: Paper Planchets

[Martinson Timothy I <tmartin@wpsr.com>]

Mr Cartwright
     While we do not use paper planchets on ourTennelec LB5100PW automatic 
planchet counter, I do use a plastic snap-in version that we have custom 
molded for our use by a local plastics molder. They are very light, firmly 
held by the planchet carrier, easy to remove when desired, and much less 
expensive than the stainless steel planchets provided thru Oxford/Tennelec. 
The only change I made to accomodate our use of the plastic planchets was to 
have fabricated a new calibration source(s) utilizing the plastic planchets 
for a backing. This allows for the change in backscatter due to the new 
material. Since we have these made for us, they are not commercialy 
available (we own the mould). We did, at their request, supply some to 
Tennelec for a university that required the weight savings, they stacked 
their planchets so high that the floor above had a hole cut thru to 
accomodate it. I could supply some to you to tryout. Perhaps they would fit 
your application.

Tim Martinson
Health Physics Group
Kewaunee Nuclear Power Plant
Wisconsin Public Service Corporation
N490 Highway 42
Kewaunee, Wi     54216
Phone:(920)388-8345
Fax:(920)388-8331
E-mail: tmartin@wpsr.com
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