Extended Burnup CANDU Fuel: Description of Database and Comparison with Code Predictions

Abstract

Interest in the modelling of extended-burnup CANDU fuel has been prompted by the examination of such fuel from CANDU reactors and the development of extended-burnup CANDU fuel for the future. A study was done at AECL Research to compile a database on experimental irradiations whose outer-element burnups exceed 300 MW.h/kgU. This paper describes the elements that comprise the database and discusses analysis of fission-gas-release measurements against experimental parameters. Fission-gas- release measurements are also compared against predicted results from the MOD10 and MOD11 versions of the code ELESIM.