Posts Tagged ‘2oo3’

High Pressure Protective Systems for Oil and Gas Producers

Posted in Final Control Element, Oil & Gas, Safety on Tuesday, September 3rd, 2013. One comment so far
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A North Carolina State University course, Introduction to Fugitive Emissions Monitoring, defines fugitive emissions as: …used in air quality control, generally refers to any emission escaping from regulated processes (sources) other than via the designed release point (smoke stack, etc.). The point source for a fugitive emission is simply called “a leak.” These leaks and […]

Redundancy and Diagnostics in Safety Instrumented System Sensors

Posted in Safety on Wednesday, December 12th, 2012. 2 comments so far
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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 article from several years ago, Measurement Best Practices for Safety Instrumented Systems by Mark […]

Safety Instrumented System Architecture Diagnostics

Posted in Safety, Technologies on Tuesday, September 13th, 2011. One comment so far
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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 – Practical Probabilistic Calculations, to explain how to do probabilistic calculations based on […]

Considering the Tradeoffs in Safety-Certified Sensors

Posted in Measurement, Safety on Thursday, December 4th, 2008. No comments yet
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Emerson’s Dale Perry alerted me to a great article on safety-certified sensors in the November 2008 issue of Control Engineering magazine. Dale manages the Rosemount pressure measurement line of products. The article, Practice Safe Sensing; Safety-certified sensors promise to cut costs and boost performance. But the tradeoffs must be carefully considered., described the advances in […]