BENCHMARK EXPERIMENTS ON A LEAD REFLECTED SYSTEM AND CALCULATIONS ON THE GEOMETRY OF THE EXPERIMENTAL FACILITY USING MOST OF THE COMMONLY AVAILABLE NUCLEAR DATA LIBRARIES
Based on some criticality benchmark experiments with lead reflectors some recent calculations carried out in parallel by Service d'Etude de Criticite, France (SEC), and the U.K. Atomic Energy Authority, Safety and Reliability Directorate (SRD), some critical approach experiments were decided on to compare the different libraries of cross-sections available. They were designed by SEC in parallel with SRD, the object being to predict a high leakage core at optimum moderation with a thick lead reflector in order to maximise the effect of the lead. The following conclusions were reached: - The experiments are relatively pure; SEC and SRD's results are not statistically different. - The counters have only a slight effect on the reactivity of the assembly. - Monk and Moret's results are statistically equivalent. - GAMTEC II library cross-sections over-predict the effect of the lead reflector by about 7%. - The calculated results predicted by the various libraries (not GAMTEC II) generally are within three standard deviations of the values measured in the experiments. - Except for SCALE 16 group the libraries tend to over-predict the measured k effectives. - This report has particular relevance to transport of LWR fuel in lead shielded transport flasks; the work was partly funded by the CEC (Directorate General for Energy) (DG XVII/D-1).
Bibliographic Reference: EUR 9993 EN (1985) MF, 70 P., BFR 150, BLOW-UP COPY BFR 350, EUROFFICE, LUXEMBOURG, POB 1003
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Record Number: 1989124127200 / Last updated on: 1987-01-01
Available languages: en