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Posts Tagged ‘CFSE’

Sharing Devices between Control and Safety Instrumented Systems

Posted in Abnormal Situation Prevention, Safety on Tuesday, May 1st, 2012. One comment so far
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Emerson’s Mike Boudreaux alerted me to a discussion in the Oil and Gas Instrumentation Club LinkedIn group. The thread referenced an earlier post on this blog, Field Device Sharing Between Control and Safety Systems that Mike had written. Mike quoted Emerson certified functional safety expert, Len Laskowski, whom you may recall from earlier posts, on […]

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 […]

Executing IEC 61511 Process Safety Projects

Posted in Project Services, Safety on Friday, May 21st, 2010. No comments yet
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ControlGlobal.com has an excellent article on the global process safety standard, IEC 61511. The article, IEC 61511 Implementation – The Execution Challenge, shares the experiences of two Mustang Engineering process automation project veterans. I turned to one of Emerson’s certified functional safety experts (CFSE) and long-time process safety veteran, Len Laskowski, for his thoughts on […]

Volume Tank Considerations in Process Safety Applications

Posted in Project Services, Safety on Tuesday, January 27th, 2009. 4 comments so far
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I saw a great process safety article in InTech magazine titled, When failsafe isn’t enough. It give a “howto” approach to volume tank sizing for reserve air pressure required for an orderly safety shutdown. The author describes some cases where this reserve air volume might be needed, such as when failure position of safety valves […]