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Study on integrated functional hazard analysis for Safety-Critical System

Tao Tang

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Abstract

This paper introduced an improved safety analysis technique for Integrated Functional Hazard Analysis(IFHA)of Safety-Critical System.It was integrated functional safety analysis,FHA,FMEA,HAZOP and FTA by interaction of analyzing results in different phases and the expression of unified fault tree to ensure the consistency of the process and overcome the problems appeared in the classic analysis.In this paper the introduced technique was also used in the ground subsystem of CBTC-ZC Subsystem,which helped to identify potential hazards in system design,not only as a safety case,but also the project for the further analysis.The next work would analyze the software of ZC with hardware in the future.

About this research paper

What this paper is about

This paper introduced an improved safety analysis technique for Integrated Functional Hazard Analysis(IFHA)of Safety-Critical System.It was integrated functional safety analysis,FHA,FMEA,HAZOP and FTA by interaction of analyzing results in different phases and the expression of unified fault tree to ensure the consistency of the process and overcome the problems appeared in the classic analysis.In this paper the introduced technique was also used in the ground subsystem of CBTC-ZC Subsystem,which helped to identify potential hazards in system design,not only as a safety case,but also the project for the further analysis.The next work would analyze the software of ZC with hardware in the future.

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Available abstract

This paper introduced an improved safety analysis technique for Integrated Functional Hazard Analysis(IFHA)of Safety-Critical System.It was integrated functional safety analysis,FHA,FMEA,HAZOP and FTA by interaction of analyzing results in different phases and the expression of unified fault tree to ensure the consistency of the process and overcome the problems appeared in the classic analysis.In this paper the introduced technique was also used in the ground subsystem of CBTC-ZC Subsystem,which helped to identify potential hazards in system design,not only as a safety case,but also the project for the further analysis.The next work would analyze the software of ZC with hardware in the future.

Key concepts: Hazard and operability study, Fault tree analysis, Reliability engineering, Hazard analysis, Consistency (knowledge bases), Life-critical system, System safety, Hazard

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