Clean critical experiment benchmarks for plutonium recycle in LWR's. Volume I. Final report

Technical Report · Thu Apr 01 04:00:00 EST 1976

OSTI ID:7119390

Smith, R I; Konzek, G J

The experimental measurements program reported provides benchmark neutronics data for use in assessing the accuracy of neutronics analysis methods for slightly enriched uranium lattices and for mixed oxide (UO2 - PuO2). A series of twelve lattice experiments has been performed to determine neutronics parameters, such as the number of fuel rods needed to achieve criticality unborated or the boron concentration needed in the moderator to achieve criticality when borated, and to measure the power distributions throughout the cores. The twelve experiments consisted of six lattices containing UO2-2.35% 235U fuel and six lattices containing UO2-2 wt% PuO2 (8% 240Pu). The lattice pitches were selected to provide configurations which were undermoderated, near optimum moderation, or overmoderated and which had approximately the same water-to-fuel volume ratio for both fuel types in each degree of moderation. (GRA)

• Research Organization: Battelle Pacific Northwest Labs., Richland, WA (USA)
• OSTI ID: 7119390
• Report Number(s): PB-255728
• Country of Publication: United States
• Language: English

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