Monitoring
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United States of America Patent
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Mar 8, 2011
Grant Date -
Aug 7, 2008
app pub date -
Apr 9, 2008
filing date -
Nov 23, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The method includes providing the volume of waste in a monitoring space; providing a support, the support being provided with a plurality of detectors for radioactive material; monitoring the volume of waste for radioactive material, in one or more parts, to give a monitoring results; and correcting the monitoring result for geometry and/or attenuation to give a corrected result using a correction factor. The correction factor is obtained by a method that includes providing a simulation of an equivalent volume of waste free of radioactive material in an equivalent monitoring space, with equivalent detectors; providing a known activity radioactive source at one or more positions in the volume of waste; determining the detector response to the source in a position, a comparison of the response and known activity contributing to a correction function for that equal volume, one or more such correction functions providing the correction factor.
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