Time Average CANDU Model With Fuel Reshuffling

Abstract

The CANDU time-average model when used in conjunction with the diffusion equation provides a generalized view of the core during regular operation. It gives an average picture of the reactor operation and provides values of 3-dimensional core flux, power, burnup, and refuelling-frequency distributions to be followed for reactor operations. In order to minimize fuel requirements for a CANDU core, reshuffling some of the fuel exiting the reactor has been considered. A time-average model with fuel reshuffling has been added to an existing diffusion code [DIF2G3D].This paper describes the code created to do time-average calculations with reshuffling, and some of the results achieved.