Actions for REACTIVITY MEASUREMENTS ON UNPERTURBED, SLIGHTLY ENRICHED URANIUM DIOXIDE LATTICES

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REACTIVITY MEASUREMENTS ON UNPERTURBED, SLIGHTLY ENRICHED URANIUM DIOXIDE LATTICES

Author
MacKinney, A. L.
Published
United States : [publisher not identified], 1960.
[Oak Ridge, Tennessee] : [U.S. Atomic Energy Commission], 1960.
Physical Description
microopaque : positive ; 8 x 13 cm
Additional Creators
Ball, R. M.

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Summary
Uniform lattice critical experiments with 3 and 4% en iched uranium dioxide, clad with stainless steel, were erformed in ordinary water. These experiments were done with fuel pins, 0.500 inches O.D. with an active fuel length of 66.5 inches. The fuel pins were fabricated by swaging the UO/sub 2/ powders to 87% theoretical density, in stainless steel tubing. The final wall thickness was 0.0282 inches. The pitch spacings which were used and the volume fractions of materials present in the core are listed. The minimum critical radius obtained for the fully reflected cores is shown as a function of the ratio of water to equivalent uranium metal. Measurements of the differential reactivity as a function of water height for each lattice yielded the common straight lines of (differential reactivity)/sup -1/2/ as a function of water height. Numerical integration of the differential reactivity curve yields the excess reactivity as a function of core radius. (auth)
Report Numbers
BAW-1199
Other Subject(s)
Collection
U.S. Atomic Energy Commission depository collection.
Note
DOE contract number: AT(30-1)-2602
NSA number: NSA-16-022846
OSTI Identifier 4824152
Research organization: Babcock and Wilcox Co. Critical Experiment Lab., Lynchburg, Va.
View MARC record | catkey: 38672950