Hot channel calculation methodologies in case of Gd burnable poison

István Panka, András Keresztúri, Hungary, KFKI Atomic Energy Research Institute

18th Symposium of AER on VVER Reactor Physics and Reactor Safety (2008, Eger, Hungary)
CFD, Hydraulic calculations

Abstract

The final step in the safety analysis is the investigation of the fulfilment of the acceptance criteria using hot channel calculations. Recently, there has been under way at Paks NPP to introduce a new, higher enriched (4.2 %) fuel type containing Gd burnable poison. To do that, for some transients the DBA analyses must be repeated and last year, as one of the first steps in this process, it was needed to review the hot channel calculation methodologies used in the analyses.

Presentation / full paper