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Implementation of the active neutron Coincidence Collar for the verification of unirradiated PWR and BWR fuel assemblies [electronic resource].

Published:
Los Alamos, N.M. : Los Alamos National Laboratory, 1982.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description:
Pages: 26 : digital, PDF file
Additional Creators:
Los Alamos National Laboratory and United States. Department of Energy. Office of Scientific and Technical Information
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Summary:
An active neutron interrogation technique has been developed for the measurement of the /sup 235/U content in fresh fuel assemblies. The method employs an AmLi neutron source to induce fission reactions in the fuel assembly and coincidence counting of the resulting fission reaction neutrons. When no interrogation source is present, the passive neutron coincidence rate gives a measure of the /sup 238/U by the spontaneous fission reactions. The system can be applied to the fissile content determination in fresh fuel assemblies for accountability, criticality control, and safeguards purposes. Field tests have been performed by International Atomic Energy Agency (IAEA) staff using the Coincidence Collar to verify the /sup 235/U content in light-water-reactor fuel assemblies. The results gave an accuracy of 1 to 2% in the active mode (/sup 235/U) and 2 to 3% in the passive mode (/sup 238/U) under field conditions.
Report Numbers:
E 1.99:la-ur-82-2797
E 1.99: conf-821119-3
E 1.99: iaea-sm-260/104
iaea-sm-260/104
conf-821119-3
la-ur-82-2797
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Note:
Published through SciTech Connect.
01/01/1982.
"la-ur-82-2797"
" conf-821119-3"
" iaea-sm-260/104"
"DE83000608"
International symposium on recent advances in nuclear materials safeguards, Nienna, Australia, 8 Nov 1982.
Menlove, H.O.; Keddar, A.
Funding Information:
W-7405-ENG-36
View MARC record | catkey: 14398247