Eunbi Kim  Hyuksoo Han

10.5626/JOK.2019.46.8.741

multi-view system modeling safety activity management process safety lifecycle management system tool chain

To ensure safety in a safety critical system, it is of importance to identify the potential hazards, to analyze and evaluate them from a concept phase. If the hazards are assessed as critical, they must be removed or safety requirements to mitigate them should be defined. Also, the safety requirements should be designed, implemented, and verified through testing. For the developers and safety experts to work together in the lifecycle, it is necessitated that the safety activities should be integrated into the modeling of system development. For the appropriate performance of these activities, a management system is required that can provide the traceability and status accounting of artifacts such as requirements specification, hazard list and safety requirements as mitigation method, design, implementation, and test cases. However, previous researches have mostly focused on providing better modeling and analysis methods for safety activities. Not much effort has been made on the management process of safety activities. In this paper, we propose the framework for safety activity management process and SLMS (Safety Lifecycle Management System) based on the multi-system modeling process, SAMM (Safety Analysis based on Multi-view Modeling). To demonstrate the capability of the proposed framework, an appropriate example of applying it to a radiotherapy system is also presented.