Nuclear Safety of RBMK Storage Pool under Seismic Impact

International Conference for Young Scientists, Specialists, and Postgraduates on Nuclear Reactor Physics 2016

Fedosov, A.^1

Head of Laboratory, NRC, Kurchatov Institute, Moscow, Russia^1

关键词: Design basis accidents;    Fuel assembly;    Maximum design;    Nuclear safety;    Regulatory documents;    Seismic action;    Seismic impacts;    Vertical positions;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/781/1/012035/pdf
DOI  :  10.1088/1742-6596/781/1/012035

来源: IOP

【 摘 要 】

Nuclear safety of RBMK storage pool of spent fuel during of the maximum design earthquake is evaluated. The lower ends of the fuel assemblies are not fixed and they can deviate from the vertical position. The seismic action may be one of the reasons for such deviations. 3D model of fuel assemblies movements caused by seismic impact is used. The simulation of the dynamics of a fuel assemblies group under seismic impacts allows to find the dangerous configuration of closest approach of the fuel assemblies. Three-dimensional neutron program STEPAN calculates the Keff of the most dangerous systems. The maximum design earthquake is the design basis accident. In this case according to the regulatory documents the fuel is considered with zero burn-up. Nuclear safety of RBMK storage pool under considered conditions is provided.