Reference critical experiments. Progress report, January 1--March 31, 1978
Five special cans of oxide, used to fill the regions around the driver support and source removal slots, have been packed and adjusted to an H/U of 0.75 by injecting measured quantities of water. Handstacking of the metal and solution uranium drivers has been completed. Two pairs of solution driver cans were fabricated of type 304 stainless steel and their dimensions measured. Handstacking of the low-enriched oxide cans at an H/U = 0.75 was performed on the horizontal split table in the concrete reflector. The first table closure of the concrete-reflected oxide experiment had the solution driver cans in the array, but they contained no solution. The reciprocal multiplication was measured as a function of the table separation, and a value of 0.55 with the table completely closed was achieved. A proposal for thirteen critical experiments to be added to the existing low-enriched oxide experiments was submitted to NRC for approval. These additional experiments are to determine the conditions for criticality for arrays of low-enriched oxide (H/U = 0.75) with various moderating materials interspersed among the units.
- Research Organization:
- Atomics International Div., Golden, CO (USA). Rocky Flats Plant
- OSTI ID:
- 6896033
- Report Number(s):
- NUREG/CR-0096; RFP-2795
- Country of Publication:
- United States
- Language:
- English
Similar Records
Reference critical experiments. Progress report October 1, 1978--December 31, 1978
Critical experiments on low-enriched uranium oxide systems with H/U = 2. 03
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URANIUM 235
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420203* - Engineering- Handling Equipment & Procedures