REDUCED REACTIVITY SWING LEU FUEL CYCLE ANALYSES FOR THE HFR PETTEN
The primary objective of these low enriched uranium (LEU) fuel cycle analyses was to effect at least a 33% reduction in the reactivity swing now experienced in the high enriched uranium (HEU) cycle while minimizing increases in 235-U loading and power peaking. All LEU equilibrium fuel cycle calculations were performed using either a 19- or 20-plate fuel element with 0.76 mm thick meat and 0.5 or 0.6 mm thick Cd wires as burnable absorbers and 16- or 17- plate control rod fuel followers with 0.76 mm thick meat. Burn up dependent microscopic cross sections were used for all heavy metals and fission products. A three-dimensional model was used to account for the effect of partially inserted control rods upon burn-up profiles of fuel and of burnable absorbers and upon power peaking. The equilibrium cycle reactivity swing (or, equivalently control rod movement) was reduced by 50% using LEU fuel with U meat densities <4.8 Mg/m**3.
Bibliographic Reference: INTERNATIONAL MEETING ON REDUCED ENRICHMENT FOR RESEARCH AND TEST REACTORS, PETTEN (THE NETHERLANDS), OCT. 14-16, 1985 WRITE TO CEC LUXEMBOURG, DG XIII/A2, POB 1907 MENTIONING PAPER E 32631 ORA
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Record Number: 1989124127100 / Last updated on: 1987-01-01
Available languages: en