A few months ago, I attempted to clear up some misconceptions about the use of digital valve controllers in safety applications in a post, Clarifications on the Use of the DVC6000 SIS in Safety Applications. It addressed misconceptions about references to the obsolete...
safety instrumented function
Clarifications on the Use of the DVC6000 SIS in Safety Applications
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...
Clear and Concise Safety Requirements Specifications
Update and bump: Here is the link to Andy's paper, The importance of a clear Safety Requirements Specification as part of the overall Safety Lifecycle, which is now posted. Original May 2011 post: Emerson's Andy Crosland, a process safety expert, will be presenting a...
Roundup of Process Safety Thoughts and Ideas
As we did with the recent energy efficiency post, I wanted to highlight a few key points made in past IEC 61511 safety lifecycle-related posts. This global safety standard provides a performance-based methodology to plan and execute your process safety efforts through...
Adopting the IEC 61511 Safety Lifecycle Standard
I saw a great article from exida's Dr. Peter Clarke, Setting the Standard, on how process plants can benefit through proper and careful adoption of the IEC 61511 global safety standard. It's perhaps the best primer I've seen in a while on the safety lifecycle and the...
Control Valves in Process Safety Applications
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...
Five Common Misconceptions about Functional Safety
Emerson's Mike Boudreaux shares some misconceptions that automation and safety professionals have about functional safety. Here they are in Mike's words: Emerson has provided free safety lifecycle seminars to process industry companies around the world, including...
Differences in Fire & Gas Systems and Emergency Shutdown Systems
As we thaw out from this morning's ice and snow here in Austin, Texas, Mike Boudreaux was kind enough to send me his thoughts on a fire & gas system presentation by Emerson's Raphael Lachmann. Raphael, whom you may recall from an earlier marine and offshore safety...
Thermocouples or Temperature Transmitters in Safety Systems?
I discussed the use of RTDs and thermocouples for temperature measurement last week in a post, Temperature Measurement and Installation Practices. Emerson's Len Laskowski, a certified functional safety expert (CFSE), was recently asked about the use of thermocouples...
Credit for Partial Stroke Tests in Verification Process
A question was posed this week to Emerson's Mike Boudreaux about how to take credit for partial stoke tests in a performance verification process. Mike leads the process safety systems efforts and was presenting on this topic this week. He wrote up this post to recap...
Dual Purpose Transmitters in Safety Functions and Basic Process Control
Emerson's Maruti Dey, a technical consultant with expertise in safety instrumented systems (SIS), gave an Emerson Exchange presentation, How to Avoid Shooting Yourself in the Foot with Your SIS? In the presentation, Maruti described using SIS transmitters in a...
Staying on Schedule through Diagnostic Detection
Emerson's David Sheppard, a certified functional safety expert, passed along a great story of a recent refinery incinerator startup. Over the course of a week, the incinerator was taken down so that the emergency shutdown system (ESD) and process control-related...
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