WWR-K reactor LEU core design optimization for improving the experimental characteristics
Shaimerdenov A. Sairanbayev D. Gizatulin S. Nessipbay A. Bugubay Z. Nugumanov D. Sakhiyev S.
January 2024Elsevier Ltd
Annals of Nuclear Energy
2024#195
The increase in demand for irradiation activities in the WWR-K reactor dictates the need to increase the number of irradiation positions in the core. Several core designs were considered by simulation with using MCNP6 code. As a result, core consisting of 22 FAs of the 1st type and 4 FAs of the 2nd type was chosen. An analysis of the calculation results showed that the new design of the core improves the experimental characteristics of the reactor and, at the same time, ensures nuclear safety. In particular, the number of irradiation positions in the fuel area increases from 3 to 5, in the new core design. The maximum thermal neutron flux increases to 2.1x1014 cm-2s−1. This paper presents the results of neutron analysis of the new WWR-K reactor core design in comparison with the existing.
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The Institute of Nuclear Physics, 1 Ibragimov st., Almaty, 050032, Kazakhstan
The Institute of Nuclear Physics
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