Neutron physics analysis of core reserve at Cycle 17 of Kozloduy-2 unit

Kozloduy-2 unit began its commercial operation in 1975. Its 17th refueling cycle is performed in 1992 according to a special safety-related schedule. This report provides data on fuel loading, power density distributions, operational limits, reactivity coefficients, control rod worths. The core is arranged in a new loading pattern with better distribution of the differently burnt assemblies, in order to achieve the most uniform power distribution. Preliminary calculated values have been compared with the experimental data measured during the start-up of Unit 2. The results of experiment show that the cycle 17 of Kozloduy-2 reactor satisfies the nuclear safety criteria. 4 figs., 9 tabs., 7 refs. (author)