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Benchmarking of the graphite and fluoride insertions in LR-0 reactor

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LOSA E. KOŠŤÁL M. RYPAR V. SCHULC M. NOVÁK E. JÁNSKÝ B. VEŠKRNA Martin MRAVEC Filip MATĚJ Zdeněk CVACHOVEC František

Druh Článek ve sborníku
Konference Physics of Reactors 2016, PHYSOR 2016: Unifying Theory and Experiments in the 21st Century
Fakulta / Pracoviště MU

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WWW https://www.scopus.com/inward/record.uri?eid=2-s2.0-84992163237&partnerID=40&md5=d398be12ce5f72d7074810c5fd7a6117
Klíčová slova Benchmark; FLIBE; FLINA; Graphite; LR-0
Popis Graphite and selected fluoride salts have their place in historic, as well as in most advanced nuclear reactors. Integral benchmarking of materials used in nuclear technology is very important for validation of calculation codes used at advanced reactor modelling. Discovered discrepancies can also point at inaccurate description of nuclear data. Benchmark experiments have been carried out in zero power light water reactor, LR-0, which is suited for these tasks thanks to the well-defined criticality. Criticality and neutron spectrum in graphite and fluoride salt has been benchmarked in experimental phase. The results of critical benchmark for graphite are showing good coincidence with calculation in ENDF/B-VII.0 nuclear library, however discrepancies exceeding 3a interval of uncertainties have been demonstrated with fluoride salt. Large discrepancies are apparent from C/E-1 comparison of neutron spectrum in fluoride salt. These discrepancies are likely caused by improper description of 19F.
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