Review of the CANDU® Time-Average Model And Calculations

Abstract

This is a review paper. It provides a review of the CANDU time-average model. This is a reactor physicist’s design tool, useful in designing an average picture of the reactor operation. It provides to the reactor operator targets of 3-dimensional core flux, power, burnup, and refuelling-frequency distributions to be followed for operating the reactor. The time-average model accounts for the discrete nature of refuelling, the refuelling scheme used, and the variation of lattice properties from bundle to bundle. This paper describes the CANDU time-average model, the analytical basis of the time-average model, and how time-average calculations are done.