Possible beyond design‐basis accident analysis dealing with crippling of VVER‐1200 fuel assemblies, Joint Institute for Power&Nuclear Research‐ Sosny

S. Polazau (Mr), National Academy of Science of Belarus

26th Symposium of AER on VVER Reactor Physics and Reactor Safety (2016, Helsinki, Finland)
Reactor dynamics and safety analysis

Abstract

POSSIBLE BEYOND DESIGN-BASIC ACCIDENT ANALYSIS DEALING WITH CRIPPLING OF VVER-1200 FUEL ASSEMBLIESSIKORIN S., POLAZAU S., DAMARAD Yu. Joint Institute for Power and Nuclear Research – Sosny,National Academy of Science of BelarusABSTRACTThe destruction variants for TVS-2M fuel assembly of reactor VVER-1200 are analyzed on the possible beyond design-basic accident at a handling and transportation of fuel assemblies, including unauthorized action. By means of program codes MCU-PD and MCNP4C the analytical researches were executed on criticality of multiple systems on the basis of fuel rods, contained in fuel assemblies. The opportunity to create nuclear-dangerous system with Keff exceeding 1,09 in the water are shown. Technical decisions for avoidance of super-critical system formations and fulfillment of nuclear safety requirements are offered.26th Symposium of AER on VVER Reactor Physics and Reactor Safety 41 10 – 14 October 2016, Helsinki, Finland

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