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Reliability, Maintainability and Risk, 9th Edition by David J. Smith

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Chapter 24

A Case Study: Gas Detection System

Abstract

This is a practical case study which enables readers to practice some of the quantification techniques explained throughout the book.

This chapter is a case study based on a typical gas detection system. It provides an example of the safety-integrity targeting described in Chapter 22. The topic is fully covered in The Safety Critical Systems Handbook, D. J. Smith and K. G. L. Simpson, 4th edition, ISBN 978-0-12-805121-4.
Assume that our gas detection system has the primary function of providing an executive action input to some other ‘Emergency Shutdown’ system in order to protect a chemical process plant. This ESD system will close valves in order to isolate the flammable gases so as to prevent ...

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