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Safety Analysis For The Wwr-K Research Reactor Converted To Leu Fuel, S. N. Koltochnik, A. A. Shaimerdenov

Eurasian Journal of Physics and Functional Materials

Recently in the WWR-K water-water research reactor the former HEU fuel, enriched to 36% in Uranium- 235, was changed to LEU one, enriched to 19.7%, with substantial change of the core configuration. In view of reactor conversion, a new Safety Analysis Report (SAR) was developed for the WWR-K reactor. Substantiation of reactor safe operation under both normal operation and emergency conditions was done under thermal-hydraulic approach. In the analysis developed prior to physical start up it was assumed that a main circulation pump (MCP) provides the coolant flow rate in the core equal to 350 m 3 /h (a certified …