Abstract
Absence of relevant neutronic experimental data substantiating the use of plutonium fuel in high-temperature graphite moderated reactors determines the necessity of conducting the step-by-step calculational benchmark studies of neutron-physics characteristics of HTGR reactors supposing the use of Pu fuel. In frames of proposed benchmark neutronic calculations of elementary cells of a HTGR with prismatic block fuel, the benchmark models of fuel compact and burnable poison cells were developed and calculated. This paper presents a short description of benchmarks and currently available solutions.
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