Experimental Criticality Benchmarks for SNAP 10A/2 Reactor Cores

Krass, A.W.

Oak Ridge National Laboratory

关键词: Criticality;    Radiation Protection;    Reflection;    Hydrides;    Nesdps Office Of Nuclear Energy Space And Defense Power Systems;   

DOI  :  10.2172/885963
RP-ID  :  ORNL/TM-2005/54
RP-ID  :  DE-AC05-00OR22725
RP-ID  :  885963

美国|英语

来源: UNT Digital Library

【 摘 要 】

This report describes computational benchmark models for nuclear criticality derived from descriptions of the Systems for Nuclear Auxiliary Power (SNAP) Critical Assembly (SCA)-4B experimental criticality program conducted by Atomics International during the early 1960's. The selected experimental configurations consist of fueled SNAP 10A/2-type reactor cores subject to varied conditions of water immersion and reflection under experimental control to measure neutron multiplication. SNAP 10A/2-type reactor cores are compact volumes fueled and moderated with the hydride of highly enriched uranium-zirconium alloy. Specifications for the materials and geometry needed to describe a given experimental configuration for a model using MCNP5 are provided. The material and geometry specifications are adequate to permit user development of input for alternative nuclear safety codes, such as KENO. A total of 73 distinct experimental configurations are described.