Synopsis
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. This book can also readily be used in machine safety applications as well. 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 suite a wide range of applications.
About the Author
Dr. Scharpf is a Principal Engineer and Partner with exida. He has over twenty years of professional experience and is widely recognized for his work in chemical process safety, efficiency analysis and optimization. He has led many Safety Lifecycle projects in chemical processing, energy, mining and machine automation applications from analysis to operations. He has published numerous reviewed journal articles as well as co-authoring an ISA textbook on SIL selection. He is one of exida s principal training facilitators and a member of the CFSE Governance Board Executive. Dr. Scharpf has also developed and patented several of the cryogenic gas processing, energy management, and separation techniques currently used for hydrogen, synthesis gas, power generation, and industrial drying. His principal responsibilities at exida center on the risk analysis phases of projects with a focus on achieving both cost and safety improvements. With significant experience in research and development as well, he also teaches several process, energy, and safety related courses at the University of Otago in Dunedin, New Zealand.
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