Transition to Four Batch Loading Scheme in Loviisa NPP

S. Saarinen, T. Lahtinen, M. Antila, Fortum Nuclear Services Ltd, Finland

19th Symposium of AER on VVER Reactor Physics and Reactor Safety (2009, Varna, Bulgaria)
Fuel management


The VVER-440 reactors of Loviisa NPP are operated with 1500 MWth power and reduced core. During recent years a 3-batch loading scheme has been used. Loviisa-1 is currently running with BNFL fuel equilibrium cycle and Loviisa-2 with TVEL fuel equilibrium cycle. Our goal is to move to a 4-batch scheme with TVEL fuel for both reactors. To achieve this goal the U-235 enrichment has to be increased from the current designs used. The fuel to be used in the near future is 4.37 % enriched fuel with six Gd2O3 doped rods.

Presentation / full paper

Only registered users from member companies are allowed to view and download presentations and full papers.

Please log in or sign up.