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

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Chapter 11

Pressure Control System (Exercise)

Abstract

This exercise on Pressure Control System is based on the real scenario. Spaces have been left for the reader to attempt the calculations, for which answers are provided in Appendix 5.

Keywords

CCF; Life cycle; MTD; Proposed design; Reliability model assumptions; Safety system
 
This exercise is based on a real scenario. Spaces have been left for the reader to attempt the calculations. The answers are provided in Appendix 5.

11.1. The Unprotected System

Consider a plant supplying gas to offsite via a twin stream pressure control station. Each stream is regulated by two valves (top of Figure 11.1). Each valve is under the control of its downstream pressure. Each valve is closed by the upstream gas pressure ...

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