Neutron collar calibration and evaluation for assay of LWR fuel assemblies containing burnable neutron absorbers

Technical Report · Thu Nov 01 00:00:00 EST 1990

DOI:https://doi.org/10.2172/6531379· OSTI ID:6531379

Henriksen, P W ^[1]; Menlove, H O; Stewart, J E; Qiao, S Z; Wenz, T R ^[2]; Verrecchia, G P.D. ^[3]

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1. ed.
2. Los Alamos National Lab., NM (USA)
3. Commission of the European Communities, Luxembourg (Luxembourg). Safeguards Directorate

The neutron coincidence collar is used to verify the uranium content in light water reactor fuel assemblies. An AmLi neutron source actively interrogates the fuel assembly to measure the {sup 235}U content and the {sup 238}U content can be verified from a passive neutron coincidence measurement. This report gives the collar calibration data for pressurized water reactor (PWR) and boiling water reactor (BWR) fuel assemblies both with and without cadmium liners. Calibration curves and correction factors are presented for neutron absorbers (burnable poisons) and various fuel assembly sizes. The data were collected using the Los Alamos BWR and PWR test assemblies as well as fuel assemblies from several fuel fabrication facilities. 11 refs., 15 figs., 14 tabs.

• Research Organization: Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOD
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 6531379
• Report Number(s): LA-11965-MS; ISPO-323; ON: DE91001718
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
BWR TYPE REACTORS
FUEL ASSEMBLIES
NEUTRON ABSORBERS
CALIBRATION
NEUTRON DETECTORS
PWR TYPE REACTORS
CADMIUM
MATHEMATICAL MODELS
NEUTRON SOURCES
URANIUM 235
URANIUM 238
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALPHA DECAY RADIOISOTOPES
ELEMENTS
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EVEN-ODD NUCLEI
HEAVY NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MEASURING INSTRUMENTS
METALS
MINUTES LIVING RADIOISOTOPES
NUCLEI
PARTICLE SOURCES
RADIATION DETECTORS
RADIATION SOURCES
RADIOISOTOPES
REACTORS
URANIUM ISOTOPES
WATER COOLED REACTORS
WATER MODERATED REACTORS
YEARS LIVING RADIOISOTOPES
210100* - Power Reactors
Nonbreeding
Light-Water Moderated
Boiling Water Cooled
210200 - Power Reactors
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440102 - Radiation Instrumentation- Radiation Dosemeters