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Pulsed reactivity measurements of large /sup 235/U--Al castings in H/sub 2/O [electronic resource].

Published
Aiken, S.C : Savannah River Laboratory, 1977.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
Pages: 14 : digital, PDF file
Additional Creators
Savannah River Laboratory and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
The safe storage and handling of large /sup 235/U-Al castings at the Savannah River Plant are assured by limiting the number of fuel pieces and their spacing such that the k/sub eff/ calculated by KENO-IV with Hansen-Roach cross sections does not exceed some conservative limit with complete, accidental water immersion. For economic reasons, the conservative limit on the calculated k/sub eff/ is generally chosen as high as possible consistent with an accurate knowledge of the margin of error in the k/sub eff/ calculation. The margin of error for arrays of large, hollow cylinders of highly enriched /sup 235/U-Al alloy fuel in H/sub 2/O is presented. The subcritical reactivities were derived from pulsed neutron measurements. The measurements are extended to castings with 17.39 kg /sup 235/U/m, the pulsed experiments are more accurately analyzed by the ..cap alpha..v/sup -1/ method, and measurements for both 7-assembly hexagonal and 2 x 3 square pitch lattices are compared with KENO-IV calculations.
Report Numbers
E 1.99:dp-ms-77-49
E 1.99: conf-771109-70
conf-771109-70
dp-ms-77-49
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Note
Published through SciTech Connect.
01/01/1977.
"dp-ms-77-49"
" conf-771109-70"
ANS winter meeting, San Francisco, CA, USA, 27 Nov 1977.
Pellarin, D.J.; Jarriel, J.L.
Funding Information
EY-76-C-09-0001
View MARC record | catkey: 14119159