Chapter 19. Failure Tolerance Design
Gregg John Baumer
Chairman, International Space Station Safety Review Panel (Retired), Johnson Space Center, National Aeronautics and Space Administration, Houston, Texas
Contents
19.1 Safe
653
19.2 Hazard
655
19.3 Hazardous Functions
658
19.4 Design for Minimum Risk
659
19.5 Conclusions
660
19.1. Safe
Safe is a general term, denoting an acceptable level of risk, relative freedom from and low probability of personal injury, fatality, damage to property, or loss of critical equipment function (NASA 1989). It should be the goal of all space hardware designers to develop hardware that is safe. When there is a breakdown of safety in design, accidents occur.
An accident is an unplanned event or series of events that result ...
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