Reference critical experiments. Progress report, April 1--June 30, 1978
A series of experiments was conducted to provide accurate critical data on low-enriched uranium oxide (U/sub 3/O/sub 8/) systems with three different moisture contents and under several conditions of reflection. These data will provide check-points against which computer accuracy may be determined. The core currently being studied consists of approx. 1900 kg of low-enriched (4.5% U-235) uranium oxide with an H/U of approx. 0.75. The oxide alone is not ctitical; hence, a high-enriched (93% U-235) uranium driver section near the core center is required. During this quarter, nine critical data points were obtained for concrete-, plastic-, and minimally-reflected cores with three different drivers. Thirteen experiments were added to the program to determine the effect of various moderator materials interspersed between the core units. For these experiments, all material has been obtained and fabricated, and other preparations are nearly completed. The uranium oxide is gaining weight with time. Four oxide cans have been isolated in controlled atmospheres to determine the cause of the weight gain.
- Research Organization:
- Atomics International Div., Golden, CO (USA). Rocky Flats Plant
- OSTI ID:
- 6547585
- Report Number(s):
- NUREG/CR-0297; RFP-2829
- Country of Publication:
- United States
- Language:
- English
Similar Records
Reference critical experiments. Progress report October 1, 1978--December 31, 1978
Benchmark critical experiments on low-enriched uranium oxide systems with H/U = 0. 77
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URANIUM 235
CRITICALITY
RESEARCH PROGRAMS
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SLIGHTLY ENRICHED URANIUM
URANIUM OXIDES U3O8
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ACTINIDE NUCLEI
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ALPHA DECAY RADIOISOTOPES
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URANIUM COMPOUNDS
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