Examining Integrated Human-system Safety in NextGen through an Application of the Human-organization Safety Technique

摘要

In an effort to proactively examine NextGen concepts to identify and mitigate potential human performance risks and system-level contributing factors, the proactive Human-Organization Safety Technique (HOST) was developed. Building upon human factors and systems engineering theories, HOST combines the Human Error Safety Risks Assessment (HESRA) methodology with the Systems Theoretic Process Analysis (STPA) to provide stakeholders with a comprehensive view of potential safety risks. Through the application of HOST, human and system performance hazards and their impacts are identified. Utilizing systems engineering processes and human-system interaction models, the ramifications of those hazards are traced beyond the immediate hazard actor impact to identify other system and actor impacts. HOST provides a structured methodology for assessing and prioritizing human and system performance hazards based on severity, likelihood, and detection/recovery. The consistent structure underlying the human-system interaction models further enables the identification of key safety interaction points and integration hazards associated with multiple related concepts. The resulting prioritized identification of potential human and system performance hazards allows for mitigation strategies to be developed and targeted towards the highest priority hazards.