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Proceedings Paper

In-plant measurement and analysis of mixtures of uranium and plutonium TRU waste using a 252Cf shuffler instrument
Author(s): Jon R. Hurd
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Paper Abstract

The active-passive 252Cf shuffler instrument, installed and certified several years ago in Los Alamos National Laboratory's plutonium facility, has now been calibrated for different matrices to measure Waste Isolation Pilot Plant- destined transuranic-waste. Little or no data currently exists for these types of measurements in plant environments where sudden large changes in the neutron background radiation can significantly distort the results. Measurements and analyses of twenty-two 55-gallon drums, consisting of mixtures of varying quantities of uranium and plutonium in mostly noncombustible matrices, have been recently completed at the plutonium facility. The calibration and measurement techniques, including the method used to separate out the plutonium component, will be presented and discussed. Calculations used to adjust for differences in uranium enrichment from that of the calibration standards will be shown. Methods used to determine various sources of both random and systematic error will be indicated. Particular attention will be directed to those problems identified as arising from the plant environment. The results of studies to quantify the aforementioned distortion effects in the data will be presented. Various solution scenarios will be outlined, along with those adopted here.

Paper Details

Date Published: 29 January 1999
PDF: 11 pages
Proc. SPIE 3536, Nuclear Waste Instrumentation Engineering, (29 January 1999); doi: 10.1117/12.339061
Show Author Affiliations
Jon R. Hurd, Los Alamos National Lab. (United States)

Published in SPIE Proceedings Vol. 3536:
Nuclear Waste Instrumentation Engineering
David E. Robertson, Editor(s)

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