Izvestiya vuzov. Yadernaya Energetika

The peer-reviewed scientific and technology journal. ISSN: 0204-3327

Development of seismic protection system for design extension conditions

11/28/2017 2017 - #04 Global safety, reliability and diagnostics of nuclear power installations

Galiev I.I. Chernyaev A.N. Bibik S.V.

DOI: https://doi.org/10.26583/npe.2017.4.09

UDC: 621.039.587

Development of SPS DEC is proposed in the article in order to improve operational safety of nuclear power plants located in areas with unfavorable seismic conditions. The idea is to create a network of seismic stations located at a certain distance from the plant and provided with the data transmission system. If seismic sensors detect ground motion with a magnitude greater than a certain set point, seismic stations transmit a signal over the radio channels that the setpoint is exceeded before the seismic wave reaches the nuclear power plant. This allows to transfer the reactor to a subcritical state before the destruction of equipment and buildings begins. Ensuring reliable secure communication is achieved by the simultaneous use of three radio channels organized in accordance with the TETRA, WiMAx and LTE standards and technologies and by use of the necessary cryptography, authentication and data protection against distortion measures. The analysis of the optimality of the seismic stations remoteness from NPPs and their number is carried out in the work with two SS placing options: radial around the NPP and towards the place with the highest probability of occurrence of an earthquake. The scheme of multilevel majority signal processing is proposed, which allows to exclude spurious activations of the system. The proposed system is an expedient solution that does not require high costs for implementation and allows to significantly improving the safety of the nuclear power plant by preventing beyond design basis accidents caused by earthquakes with intensity higher than at maximum estimated earthquake.


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Seismic Protection System maximum estimated earthquake shutdown seismic station safety VVER data transmission