skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Plutonium calorimetry and SNM holdup measurements. Progress report for the period March 1976--August 1976

Abstract

The calorimetric instrumentation developed at Argonne National Laboratory (ANL) for making nondestructive measurements of the plutonium content of fuel rods is discussed. Measurements with these instruments are relatively fast (i.e., 15 to 20 minutes) when compared to the several hours usually required with more conventional calorimeters and for this reason are called ''fast-response.'' Most of the discussion concerns the One-Meter and the Four-Meter Fuel-Rod Calorimeters and the Analytical Small-Sample Calorimeter. However, to provide some background and continuity where needed, a small amount of discussion is devoted to the three earlier calorimeters which have been described previously in the literature. Then a brief review is presented of the literature on plutonium holdup measurements. The use of gamma-ray techniques for holdup measurements is discussed and results are given for the determination of sample thickness using the ratio of intensities of high- and low-energy gamma rays. The measurements cover the plutonium metal thickness range from 0.001 to 0.120 inches. The design of a gamma-ray collimator with 37 parallel holes is also discussed. Neutron-counting experiments using BF/sub 3/ proportional counters embedded in two polyethylene slabs are described. This detector configuration is characterized for its sensitivity to sample and background plutonium, counting both coincidence (fission)more » and total neutrons. In addition, the use of infrared imaging devices to measure small temperature differences is considered for locating large amounts of plutonium holdup and also for performing fast attribute checks for fabricated fuel elements.« less

Authors:
; ; ;
Publication Date:
Research Org.:
Argonne National Lab., IL (USA)
Sponsoring Org.:
U.S. Nuclear Regulatory Commission
OSTI Identifier:
7324989
Report Number(s):
ANL-77-8; NUREG-0182
TRN: 77-009051
DOE Contract Number:  
W-31-109-ENG-38
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
98 NUCLEAR DISARMAMENT, SAFEGUARDS, AND PHYSICAL PROTECTION; CALORIMETERS; DESIGN; NUCLEAR MATERIALS MANAGEMENT; CALORIMETRY; PLUTONIUM; GAMMA DETECTION; NEUTRON DETECTION; NONDESTRUCTIVE ANALYSIS; ACTINIDES; CHEMICAL ANALYSIS; ELEMENTS; MANAGEMENT; MEASURING INSTRUMENTS; METALS; RADIATION DETECTION; TRANSURANIUM ELEMENTS; 055001* - Nuclear Fuels- Safeguards, Inspection, & Accountability- Technical Aspects

Citation Formats

Brumbach, S B, Finkbeiner, A M, Lewis, R N, and Perry, R B. Plutonium calorimetry and SNM holdup measurements. Progress report for the period March 1976--August 1976. United States: N. p., 1977. Web. doi:10.2172/7324989.
Brumbach, S B, Finkbeiner, A M, Lewis, R N, & Perry, R B. Plutonium calorimetry and SNM holdup measurements. Progress report for the period March 1976--August 1976. United States. doi:10.2172/7324989.
Brumbach, S B, Finkbeiner, A M, Lewis, R N, and Perry, R B. Tue . "Plutonium calorimetry and SNM holdup measurements. Progress report for the period March 1976--August 1976". United States. doi:10.2172/7324989. https://www.osti.gov/servlets/purl/7324989.
@article{osti_7324989,
title = {Plutonium calorimetry and SNM holdup measurements. Progress report for the period March 1976--August 1976},
author = {Brumbach, S B and Finkbeiner, A M and Lewis, R N and Perry, R B},
abstractNote = {The calorimetric instrumentation developed at Argonne National Laboratory (ANL) for making nondestructive measurements of the plutonium content of fuel rods is discussed. Measurements with these instruments are relatively fast (i.e., 15 to 20 minutes) when compared to the several hours usually required with more conventional calorimeters and for this reason are called ''fast-response.'' Most of the discussion concerns the One-Meter and the Four-Meter Fuel-Rod Calorimeters and the Analytical Small-Sample Calorimeter. However, to provide some background and continuity where needed, a small amount of discussion is devoted to the three earlier calorimeters which have been described previously in the literature. Then a brief review is presented of the literature on plutonium holdup measurements. The use of gamma-ray techniques for holdup measurements is discussed and results are given for the determination of sample thickness using the ratio of intensities of high- and low-energy gamma rays. The measurements cover the plutonium metal thickness range from 0.001 to 0.120 inches. The design of a gamma-ray collimator with 37 parallel holes is also discussed. Neutron-counting experiments using BF/sub 3/ proportional counters embedded in two polyethylene slabs are described. This detector configuration is characterized for its sensitivity to sample and background plutonium, counting both coincidence (fission) and total neutrons. In addition, the use of infrared imaging devices to measure small temperature differences is considered for locating large amounts of plutonium holdup and also for performing fast attribute checks for fabricated fuel elements.},
doi = {10.2172/7324989},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1977},
month = {2}
}