Citation

Yu K, Peng J. China Saf. Sci. J. 2019; 29(8): 87-92.

Copyright

(Copyright © 2019, China Occupational Safety and Health Association, Publisher Gai Xue bao)

DOI

10.16265/j.cnki.issn1003-3033.2019.08.014

PMID

unavailable

Abstract

In order to ensure operation safety of marine nuclear power system, DCS safety-in-depth system is studied. Firstly, deep safety characteristics of DCS were extracted by analyzing DCS structure of marine nuclear power. Secondly, safety-in-depth factors, including operation software, hardware, environment and livewire, were analyzed based on SHEL model. Then, a safety-in-depth protection system of DCS was constructed from three aspects, top-level safety management, overall safety architecture and safety protection technology. Finally, the influencing and being influenced degree, centrality and causality of system factors were calculated and analyzed based on DEMATEL method, and its key factors and points were identified. The results show that DCS safety-in-depth factors of marine nuclear power are complex and it is necessary to carry out safety-in-depth protection from management, safety architecture and protection technology, especially paying attention to key points of safety education and training, safety management system, virus protection and intrusion protection. © 2019 China Safety Science Journal

Language: zh