PAS - White Papers

IPL Assurance

What is Your SIS Doing When You're Not Watching?

You pay a lot of money for your Safety Instrumented System (SIS) and spend a lot on its upkeep. You expect it to always be there for you. Are you really getting your money’s worth? Is it doing things you don’t know about, or not doing things it should? In this paper, we examine many of the necessary administrative tasks associated with managing Independent Protection Layers (IPLs) with particular emphasis on SIS. Some of these tasks are often overlooked, and significant risks exist if they are not done properly.
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Understanding and Applying the ANSI/ISA 18.2 Standard

Alarm Management has become an ever-increasing topic of discussion in the power and processing industries. In 2003, ISA started developing a standard around this subject. After six years of hard work, the ANSI/ISA-18.2-2009 Management of Alarm Systems for the Process Industries standard was published. This paper reviews the scope, regulatory impact, requirements, recommendations, alarm definitions, and other details of the standard.
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Understanding the New IEC 62682 Alarm Management Standard

This white paper explains why there are now both an ISA-18.2 and an IEC 62682 Standard on “Management of Alarm Systems for the Process Industries.” The genesis of the IEC document is explained and the differences between the two documents are detailed.This paper is a supplement to the PAS white paper, “Understanding and Applying the ISA-18.2 Alarm Management Standard.
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Making a Big Dent in Nuisance Alarms

In this white paper, learn the PAS 7-step approach to alarm system improvement, a well-known and proven approach based on hundreds of successful projects and many terabytes of real-world data. Elimination of nuisance alarms is an essential, early step towards a properly functioning alarm system. Dealing with very few alarms, in the ways shown in this white paper, can create a large and easily calculated improvement in an alarm system, with very little time and effort.
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Maximize Operator Effectiveness Part I: Understanding High Performance HMI Principles and Best Practices

The first paper of a two-part white paper series, "Maximize Operator Effectiveness," breaks down the evolving standards and provides valuable insight into HPHMI principles and best practices. This white paper augments the detailed content in The High Performance HMI Handbook. Part one provides typical examples of common but poor HMIs, along with highly detailed depictions of improved methods that provide for much better operator situation awareness and control.
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Maximize Operator Effectiveness Part II: Interpreting the New ANSI/ISA 101.01-2015 Standards

The second paper of a two-part white paper series, "Maximize Operator Effectiveness," provides new case studies and guidelines on developing a detailed plan of action for the improvement of a process control HMI. This white paper augments the detailed content in The High Performance HMI Handbook.
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