Highlights · 42
Safety is increased by increasing system or component reliability. If components or systems do not fail, then accidents will not occur.
Location 181
The confusion on this point is exemplified by the primary focus on failure events in most accident and incident analysis.
Location 184
High component reliability does not prevent component interaction accidents.
Location 211
Safety, in contrast, is defined as the absence of accidents, where an accident is an event involving an unplanned and unacceptable loss [115].
Location 227
To increase safety, the focus should be on eliminating or preventing hazards, not eliminating failures.
Location 228
Bottom-up decentralized decision making can lead-and has led-to major accidents in complex sociotechnical systems. Each local decision may be “correct” in the limited context in which it was made but lead to an accident when the independent decisions and organizational behaviors interact in dysfunctional ways.
Location 270
Because the accident model influences what cause(s) is ascribed to an accident, the countermeasures taken to prevent future accidents, and the evaluation of the risk in operating a system, the power and features of the accident model used will greatly affect our ability to identify and control hazards and thus prevent accidents.
Location 285
The accident model used should encourage and guide a comprehensive analysis at multiple technical and social system levels.
Location 393
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