This book has evolved over a number of years from a series of courses, seminars and safety engineering projects exida has completed throughout the world. Unfortunately, this project review and audit experience continues to show how easy it is to select bad SIL targets. Incorrect or missing input information, insufficient resources, lack of facilitator or team skills, and poor communication between disciplines can each lead to severe under-design and over-design problems. These problems can cost large amounts of money and sometimes even lives, yet they can usually be prevented by consistent, rational and careful application of the relatively basic techniques presented in this book.
The concepts and techniques in this book are based on the application of the Safety Lifecycle as it is described in the international standard IEC 61511 with references to IEC 61508 and 62061. The third edition has been fully restructured to provide a clearer path through the risk analysis process along with more detailed guidance on independent protection layers and assurance activities. It expands upon the framework developed in these standards to provide a working guide to apply these ideas to both retrofit and green field projects in the process and machine automation industries. The techniques cover a range from coarse qualitative screening up to fully detailed numerical modeling and can readily be varied or adapted to suit a wide range of applications.
Publish Date: Mar 17, 2022
ISBN-13: 978-1-934977-20-0