Comparative Analysis of VVER-1000 Westinghouse and TVEL Spent Fuel Capability

Abstract

This work has analyzed the impact on VVER-1000 spent fuel isotope composition caused by the different operational conditions, such as the presence or absence of absorber-rods, oscillating the concentration of boric acid, dissolved in the moderator (water) during the campaign, fuel and/or moderator temperature. Also, impact caused by technological allowances applied while manufacturing fuel assembly was analyzed by weight of fuel and by its enrichment. Calculations were made for reactor cells of fuel assemblies for VVER-1000. They were composed of the typical fuel assemblies of Russian TVEL suppliers and the new fuel assemblies of Westinghouse Company.