Approaching safety instrumented system design.

A new book intended to help companies achieve cost-effective safety improvements through a performance- and standards-based approach to Safety Instrumented System design has been published by the International Society of Instrumentation (ISA).

“By following the Safety Lifecycle (SLC) design and engineering methods, and functional safety standards described in the book, companies can implement a SLC process that works better, saves project time and improves safety,” says William M. Goble, Ph.D., PE, CFSE, who, along with Iwan van Beurden, MSc, CFSE, co-wrote Safety Instrumented System Design: Techniques and Design Verification.

Starting with a description of the entire SLC process, the authors illustrate the advantages and importance of performance-based design, from conceptual design to design verification. In addition to explaining the design phase of the SIS safety life cycle as defined in IEC 61511:2016, the book brings clarity to some of the potentially confusing language in the standard.

Appendices include statistics, probability, failure-rate data tables, and system architectures. Each chapter contains questions and answers similar to those found on professional certification exams for functional safety—making the book a valuable resource for those seeking to achieve certification.

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