ADDRESSING SAFETY ANALYSIS TECHNIQUE USING SysML (2.0) PARAMETRIC DIAGRAM

Complex safety critical systems are widely used in avionic, nuclear, medical, robotic, automation industries and defence applications. Safety critical system relies a lot on software, either it ensures a system's safety or can expose it by putting the system into a dangerous state. Therefore, when handling with safety critical systems, the first important step is to do hazards identification. Besides that, it requires a clear understanding of the whole software's role and interactions with the system. Identifying hazards is an important task in safety. It forms the basic foundation of the safety requirements, the system design and the system implementation. Hazard analysis needs to be carried out at the earliest stage of system development to avoid serious damage and accidents from happening. Identifying potential hazards helps to reduce overall development time, save project costs and efforts. This paper aims to validate the usability of the System Modeling Language (SysML) Parametric Diagram for safety evaluation. The described method is still an early attempt. The integration between the Parametric Diagram and safety analysis techniques provides a common language or platform for system engineers and customers to understand the whole system safety evaluation model and process. Therefore it provides a way to improve understanding on the safety properties of a safety critical system.