ISA publishes new book on Safety Instrumented Systems life-cycle based on ISA/IEC 61511 functional process safety standard

  • July 09, 2018
  • Research Triangle Park, North Carolina

The International Society of Automation (ISA) today announces it has published a new book that covers the entire life-cycle of safety instrumented systems (SIS)-including specification, design, analysis, programming, installation, maintenance, and change management.

Safety Instrumented Systems: A Life-Cycle Approach by Paul Gruhn, PE, CFSE, and Simon Lucchini, CFSE, MIEAust CPEng, leverages the performance and documentation requirements defined in the ISA/IEC 61511 functional process safety standard along with the authors' nearly 80 years of safety system experience, expertise and insights.

"The world of safety instrumented systems is complex; technology and knowledge continue to grow and evolve," says Gruhn, Global Functional Safety Consultant at aeSolutions who developed the first commercial control and safety system modeling software more than 25 years ago. "This new book provides the 'must-know' material on the entire safety instrumented system lifecycle that practitioners need. And it does so in an easy-to-read, conversational style and in a highly condensed format."

In addition to explaining the significance and value of the ISA/IEC 61511 standard in improving functional process safety, the book, Gruhn emphasizes, provides important practical guidance and real-world case studies and experiences.

"To properly design, install, commission and operate a safety system, you have to align the performance requirements of the standard with how process plants operate and how projects are executed," points out Lucchini, Chief Controls Specialist and Fellow in Safety Systems at Fluor Canada and the Safety Systems Committee chair of ISA's Safety & Security Division. "Safety needs to be integrated into the design rather than 'bolted on' at some late stage of the project. This book helps guide functional safety engineers and others involved in process industry safety to the right decisions about safety systems at the right time."

To purchase a copy of Safety Instrumented Systems: A Life-Cycle Approach,click here.

For more details, read the informative author interview

For greater perspective on the value and significance of the updated edition and its areas of new and enhanced content, read the Q&A feature with both co-editors.

About ISA

The International Society of Automation ( is a nonprofit professional association that sets the standard for those who apply engineering and technology to improve the management, safety, and cybersecurity of modern automation and control systems used across industry and critical infrastructure. Founded in 1945, ISA develops widely used global standards; certifies industry professionals; provides education and training; publishes books and technical articles; hosts conferences and exhibits; and provides networking and career development programs for its 40,000 members and 400,000 customers around the world.

ISA owns, a leading online publisher of automation-related content, and is the founding sponsor of The Automation Federation (, an association of non-profit organizations serving as "The Voice of Automation." Through a wholly owned subsidiary, ISA bridges the gap between standards and their implementation with the ISA Security Compliance Institute ( and the ISA Wireless Compliance Institute (