Practical Human Reliability Analysis An Effective Tool for Simultaneous Enhancement of Safety and Productivity

摘要

In recent years, significant advances have been made in methods and approaches for analyzing human error and assessing the likelihood of people being successful in routine operations, maintenance, nad responding to abnormal conditions. This success depends on a synergistic response by hardware systems, human operators and maintenance personnel. The area of study which focuses on people in the system is human reliability analysis (HRA). Many of the better-known models for HRA are hybrid approaches fo modeling human errors using techniques suchas probability trees, models of dependence, and performance shaping factors affecting an individual's actions. These rigorousand methodical processes are effective tools to use when a comprehensive evaluation by HRA secialists is required to support a detailed quantitative risk assessment. However, for many safety assessments, a more practical, but effective, method can be appplied for a fraction of the cost and time typically reuired to do rigorous quantitative analysis. Some trade-off of detail and precision for prompt and effective identification of potentially significant deficiencies is considered acceptable.