Transients in Reliability Associated with Human Learning

Analysis of performance data for complex mechanical energy conversion and control equipment has shown that human learning is a contributing factor to reliability growth. Resolution of technical problems is delayed until the personnel involved have developed the skills enabling them to effectively do their jobs. Added to the effect of wrong decisions and inadequately performed tasks is the accompanying lack of self-confidence that may result in the failure of personnel to assume responsibility for their actions. Case histories are presented to illustrate some of the situations that cause set-backs in reliability growth, with emphasis on that part caused by the learning process.