Citation

Wu H, Li S. China Saf. Sci. J. 2021; 31(6): 113-120.

Copyright

(Copyright © 2021, China Occupational Safety and Health Association, Publisher Gai Xue bao)

DOI

10.16265/j.cnki.issn1003-3033.2021.06.015

PMID

unavailable

Abstract

In order to overcome defect that traditional safety analysis models cannot evaluate complex interactions between components in the high-speed railway dispatching system, based on system theory, STAMP treats interaction safety between personnel and equipment in high-speed railway emergency command system as a system control and feedback problem, high-speed railway emergency dispatch control feedback model was constructed, and system safety risks and constrain were identified. STPA was used to analyze unsafe control behavior and control defects inducing unsafe control behavior. Validity of STAMP / STPA applied to safety analysis of high-speed railway emergency dispatch was verified based on case analysis of high-speed railway derailment accident in Taiwan. The results show that risk factors of emergency dispatch command of high-speed railway can be analyzed by feedback model of emergency dispatch control perception or execution error, decision-making error, receiving or execution delay. At the same time, failure path of safety constraint can be deduced by model. © 2021 China Safety Science Journal. All rights reserved.

Language: zh