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Posts Tagged ‘IEC 61508’

Control Valve Suitability in Safety Applications

Posted in Final Control Element, Safety on Wednesday, April 8th, 2015. No comments yet
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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 article, When SIL suitability is required for final control elements, was written […]

Level Switches in Tank Overfill Safety Applications

Posted in Level on Wednesday, April 1st, 2015. 2 comments so far
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Level measurements, especially in safety critical applications such as tank overspill protection, continue to advance in capability, accuracy and reliability. In this 3:16 YouTube video, Prevent overfills & decrease operating costs with Rosemount 2100 vibrating fork level switches, Emerson’s Marianne Williams shares how the Rosemount 2100 series of liquid level switches help solve measurement challenges […]

Improving Process Safety without a Calculator

Posted in Safety on Wednesday, March 4th, 2015. 2 comments so far
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If you’re not fluent in Polish, you may have missed a recent Automatyka article, Bezpieczeństwo funkcjonalne zgodne z normami [Functional Safety Compliance]. Emerson’s Andy Crosland and Ryszard Boroń wrote it and provided me an English translation of the article so that I could share with you. I’ve added some hyperlinks to some of the concepts, […]

Wired Versus Wireless Risk Analysis for Process Instrumentation Measurements

Posted in Safety on Monday, October 27th, 2014. 3 comments so far
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How does wireless communications compare against wired communications for process instrumentation? That was the subject of an Emerson Exchange presentation by Kenexis’ Ed Marszal and Emerson’s Gary Hawkins. Their presentation, Risk analysis of wired versus wireless transmission of process measurements was recently narrated by Ed as an encore presentation and uploaded to YouTube. In this […]

Safety Instrumented System Solenoid-Operated Valve Approaches

Posted in Safety on Thursday, October 16th, 2014. No comments yet
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Last week at the Emerson Exchange conference, I caught up with Emerson’s Riyaz Ali. You may recall Riyaz from many safety instrumented system-related posts. We discussed some of the trends in integrated positioners + solenoid valves + limit switches + valve position transmitters. Riyaz felt that this approach not in line with the safety instrumented […]