Sometimes an email exchange turns up something developed years ago that still has great value. So is this case with an article I received as an attachment on final control elements and their suitability in safety instrumented functions (SIFs), a.k.a. safety loops. The...
ISA Portugal recently hosted a conference on functional safety. Emerson's Russell Cockman, whom you may recall from earlier safety-related posts, presented 10 ways to improve functional safety without worrying where to put the decimal point in the calculation. From...
This past Emerson Exchange conference has a treasure trove of presentations as it does every year. I've gone into the trove and mined this presentation, Measurement Diagnostics in Safety Instrumented Systems, by Emerson's Mark Menezes. The presentation is based on an...
Advanced diagnostics are improving our lives in many ways from healthcare to transportation. And in our world of process automation, they are fundamentally changing the way we operate and manage our plants. In an earlier post, A High-Speed, Statistical View for Better...
The language of process safety is filled with its own jargon. Architectures are described as 1oo1, 1oo2, 2oo2, 2oo3, etc. The "oo" means "out of". So, 1oo1 means one-out-of-one. William M. Goble and Harry Cheddie wrote a book, Safety Instrumented Systems Verification...
Update and bump: I received great news from Riyaz that the ISA Kuwait section has agreed to let us upload and link to their December 2009 newsletter containing Riyaz's article, When is a Safety Integrity Level (SIL) Rating of a Valve Required? I'd like to thank the...
In our continuing look at elements in the IEC 61511 process safety lifecycle, I uncovered an excellent presentation, Safety Instrumented Systems - Considering the Whole Loop, by Emerson's Andy Crosland. You may recall Andy from a recent process safety seminar series...
Emerson's Riyaz Ali, whom you may recall from earlier posts, wrote an Inside Functional Safety article recently titled, Digital Technology: A remedy for sick shutdown valves in Safety Instrumented System (SIS) applications. The paper is available for purchase from...
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The opinions expressed here are the personal opinions of the authors. Content published here is not read or approved by Emerson before it is posted and does not necessarily represent the views and opinions of Emerson.