skip to main content

Title: 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.
Authors:
; ;
Publication Date:
OSTI Identifier:
5745300
Report Number(s):
CONF-871110--
Journal ID: ISSN 0003-018X; CODEN: TANSA; TRN: 89-028034
Resource Type:
Conference
Resource Relation:
Journal Name: Transactions of the American Nuclear Society; (USA); Journal Volume: 55; Conference: 3. international conference on facility operations safeguards interface, San Diego, CA (USA), 29 Nov - 4 Dec 1987
Country of Publication:
United States
Language:
English
Subject:
98 NUCLEAR DISARMAMENT, SAFEGUARDS, AND PHYSICAL PROTECTION; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; NUCLEAR FACILITIES; NUCLEAR MATERIALS MANAGEMENT; CALORIMETRY; ACCURACY; PACKAGING; SAFEGUARDS; SAMPLE PREPARATION; TIME DEPENDENCE; MANAGEMENT 055001* -- Nuclear Fuels-- Safeguards, Inspection, & Accountability-- Technical Aspects; 440100 -- Radiation Instrumentation