航空四站气体保障过程的STAMP建模与STPA安全性分析

航空四站气体保障装备的可靠性在不断提高,而气体保障过程中的事故仍有发生,需要一种新的方法系统地去识别新的危险因素,从而提高系统的安全性。从控制的角度结合STAMP和STPA对航空四站气体保障过程进行安全性分析。首先,介绍STAMP/STPA的工作机理;然后,对航空四站气体保障过程构建STAMP模型,采用STPA安全分析方法对航空四站气体保障过程的安全性进行分析,识别不安全控制行为,对生成的不安全控制行为进行场景分析;最后,与事故树分析法(ATA)进行分析结果的比较,从而证实了该方法的优越性。结果表明:采用STAMP模型和STPA安全分析法可以更加全面地识别出不安全控制行为及其原因,更有利于保证航空四站气体保障过程的安全。

STAMP Modeling and STPA Safety Analysis of Aviation Four Stations Gas Support Process

The reliability of Aviation four stations gas support equipment is improving constantly, but gas support process of the accident is still happening. STAMP regards safety as a matter of control, believing that the accident is caused by unreasonable control and inaccurate information feedback. This paper first introduces the working mechanism of STAMP / STPA, and then constructs the STAMP model for Aviation Four Stations Gas Support Process. The STPA safety analysis method is used to analyze the safety of the Aviation Four Stations Gas Support Process and identify the unsafe control action, the scene analysis of the generated unsafe control behavior is performed, and finally the comparison with Accidents Tree Analysis (ATA) is carried out to confirm the superiority of the method.