Beta-gamma Surveys in High Backgrounds

["Estabrooks, Bates" <Bates.Estabrooks@rfets.gov>]

Rocky Flats is beginning Characterization Surveys in several buildings which
will eventually be stripped out and torn down.  We need to do surveys for
b-g emitters ("decay modes other than alpha emission. . .")  i.a.w. Doe
Order 5400.5 Table IV-1 limits (5000/15000 dpm/100cm2) 

These buildings, in many locations, have high gamma backgrounds (4K-60K cpm
read on an NE Electra w/ DP6) which will make it difficult to perform direct
b-g surveys.  The background is largely due to TRU waste drums in the areas,
and due to Pu/Am residues in nearby glove box lines.

Does anyone have any elegant suggestions on instrumentation, or otherwise,
on how to deal with this? 

Thanks.

Bates Estabrooks
RMRS Rocky Flats
bates.estabrooks@rfets.gov

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