Abstracts and Available Papers Presented at the 2002 International RERTR Meeting
STUDY OF USING OF LOW ENRICHED URANIUM FUEL FOR RESEARCH REACTOR IN SOFIA
T. Apostolov, S. Belousov
Institute for Nuclear
Research and Nuclear Energy of Bulgarian Academy of Sciences
72 Tzarigradsko shosse,
1784 Sofia, Bulgaria
The results of the study of arrangement of the reactor core of
pool type Research Reactor 200 kW in Sofia are presented. The number of planned
horizontal experimental channels of Research Reactor is equal to 8 and vertical
ones to 9. The beginning of study performed for fresh IRT2M tabular fuel
assemblies containing highly enriched uranium with 36% enrichment is presented.
The core modelling calculations are performed by the MCNP4C code. The IRT-2M
fuel assembly modelling is tested by experimental data. The configuration of
the reactor core including three-tube and four-tube fuel assemblies as well as
beryllium blocks is analysed.
The aspects of feasibility of using of developed in Russia
pin-type fuel assemblies IRT-MR with low enriched uranium (LEU<20%) in core
design instead of IRT-2M ones are discussed.