Inherent limitations of fixed time servo-controlled radiometric calorimetry
There has been some interest in low precision, short run time calorimetry measurements. This type of calorimetry measurement has been proposed for use when high precision measurements are not required, for example, to screen scrap containers to determine if there is enough material to be measured more accurately of for confirmatory measurements that only require low precision results. The equipment needed to make these measurements is a servo-controlled calorimeter with a sample preequilibration bath. The preequilibration bath temperature is set to the internal temperature of the calorimeter running at a fixed servo-controlled wattage level. The sample power value is determined at a fixed time form the sample loading into the calorimeter. There are some limitations and areas of uncertainties in the use of data obtained by this method. Data collected under controlled conditions demonstrate the limitations. Sample packaging, preequilibration time, and item wattage were chosen as the variables most likely to be encountered in a plant environment.
- OSTI ID:
- 5745300
- Report Number(s):
- CONF-871110-; CODEN: TANSA; TRN: 89-028034
- Journal Information:
- Transactions of the American Nuclear Society; (USA), Vol. 55; Conference: 3. international conference on facility operations safeguards interface, San Diego, CA (USA), 29 Nov - 4 Dec 1987; ISSN 0003-018X
- Country of Publication:
- United States
- Language:
- English
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Application of prediction of equilibrium to servo-controlled calorimetry measurements
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46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
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SAFEGUARDS
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