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Posts Tagged ‘process safety’

What to See at the Offshore Technology Conference 2012

Posted in Oil & Gas, Technologies on Wednesday, May 2nd, 2012. 2 comments so far
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This is a big week for some of the major process manufacturing sectors. The Offshore Technology Conference (OTC2012) is going on through tomorrow in Houston, Texas and Interphex 2012 for the Life Sciences industry through tomorrow in New York City. These are definitely two industries with unique business challenges, processes, and operational challenges. In Twitter, […]

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 […]

Centralized, Distributed, and Hybrid Safety Instrumented Systems

Posted in Safety, Technologies on Wednesday, January 11th, 2012. No comments yet
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Emerson’s Mike Boudreaux alerted me to a great article comparing safety instrumented system architectures. The ISA InTech article, Centralized or distributed process safety compares and contrasts centralized, distributed, and hybrid safety systems. Centralized systems have a single logic solver with all safety I/O routed and hardwired back to it. Distributed systems locate the logic controllers […]

Clarifications on the Use of the DVC6000 SIS in Safety Applications

Posted in Final Control Element, Safety on Thursday, December 1st, 2011. 3 comments so far
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I had the chance to catch up with Emerson’s Riyaz Ali at the Emerson Exchange last month in Nashville. You may recall Riyaz from many process safety-related posts. In his conversations with process automation and safety professionals, he has been encountering some misconceptions he hoped we could clear up in this post. These misconceptions surround […]

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 […]