The Importance of Human Reliability Analysis in Human Space Flight

HRA is a method used to describe qualitatively and quantitatively the occurrence of human failures in the operation of complex systems that affect availability and reliability. Modeling human actions with their corresponding failure in a PRA (Probabilistic Risk Assessment) provides a more complete picture of the risk and risk contributions. A high quality HRA can provide valuable information on potential areas for improvement including training procedural equipment design and need for automation.