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