USE OF THE AXIAL BURNUP PROFILE AT THE NUCLEAR SAFETY ANALYSIS OF THE VVER-1000 SPENT FUEL STORAGE IN UKRAINE

O.Dudka, Y.Bilodid, Y.Kovbasenko, V.Khalimonchuk State Scientific and Technical Centre on Nuclear and Radiation Safety (SSTC N&RS)

17th Symposium of AER on VVER Reactor Physics and Reactor Safety (2007, Yalta, Crimea (Ukraine, back then))
PHYSICAL PROBLEM OF SPENT FUEL, DECOMMISSIONING AND RADWASTE

Abstract

Burnup of each fuel assembly conservatively uniform over assembly length and equal to average burnup of the end parts while nuclear safety analysis of the spent fuel storage taking into account burnup credit.
To avoid excessive conservatism in this approach, it is offered to use an axial conservative burnup profile for VVER-1000 spent fuel storage nuclear safety analysis.
In the report the axial conservative burnup profile is presented analyzing of spent fuel axial burnup profiles.

Presentation / full paper