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The Safety Critical Systems Handbook, 4th Edition by Kenneth L. Simpson, David J. Smith

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Part A

The Concept of Safety Integrity

In the first chapter we will introduce the concept of functional safety and the need to express targets by means of safety integrity levels. Functional safety will be placed in context, along with risk assessment, likelihood of fatality, and the cost of conformance.
The life-cycle approach, together with the basic outline of IEC 61508 (known as BS EN 61508 in the UK), will be explained.

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