Characteristics of Loviisa NPP spent fuel

摘要

The composition and radioactive characteristics of the spent fuel from Imatran Voima Oy's (IVO) Loviisa NPP (VVER-type PWR) have been estimated with the ORIGEN2 computer code (version 2.1) using the so-called PWR-UE cross section library. Four separate cases have been calculated. The main results of the calculations are the composition, activity, heat production, photon source and spectrum, and neutron source of the spent fuel as a function of cooling time. In the tables and figures of the report only the most important data of the large ORIGEN2 output files have been given. The ORIGEN2 results have also been compared with those calculated with the CASMO-HEX fuel assembly burnup program. (11 refs., 3 figs., 10 tabs.). (Atomindex citation 27:068650)