Hazard analysis technique based on hazard factors

Considering the lack of concrete hazard analysis tool for implementing hazard analysis during the preliminary design stage, a hazard analysis technique based on hazard factors was proposed. In this hazard analysis technique, hazard elements were identified, components of a system were classified, and the states of different component types were analyzed, based which potential hazards can be identified by analyzing the effect of various coupling relationships between these states to the hazard elements. A case study about the fuel system on airplane was presented which demonstrates the engineering practicability and effectiveness of the technique in preliminary hazard analysis. The hazard analysis technique can effectively identify potential hazards at the preliminary design stage, provide a basis for the subsequent design and system safety, and can also be used for safety analysis of follow-up development phase.