Operational and System Hazard Analysis in a Safe Systems Requirement Engineering Process - Application to automotive industry

This paper analyzes this issue by focusing on the definition of high-level (or vehicle-level) safety requirements. It proposes a Safe Systems Requirement Engineering Process and a method named Operational and System Hazard Analysis (O&SHA) that helps to specify the high-level safety requirements (called safety goals in ISO 26262). It is based on a Model-Based Systems Engineering approach (MBSE) which integrates safety aspects. The added value of the proposed method is illustrated by applying it to two case studies.