Bulk liquid storage tanks are found in many industrial processes including refineries, tank terminals, pipeline terminals, petrochemical and LNG plants, and aviation fuel depots to name a few. There are two predominant requirements from a process safety and control...
IEC 61508
What is in a SIL Safety Certification
exida's Dr. William Goble and Emerson's Afton Coleman presented, What's is in a SIL Safety Certification?, at the 2012 Emerson Exchange conference. Their abstract:How is a product "certified" for use in a safety instrumented system? What does this mean, and how do I...
Q and A on Digital Valve Controllers and Solenoids in Safety Applications
A reader emailed some great questions to an earlier post, Clarifications on the Use of the DVC6000 SIS in Safety Applications. The post, featuring the thoughts of Emerson's Riyaz Ali, addressed misconceptions about the use of digital valve controllers and solenoids in...
Additional Clarifications on Digital Valve Controllers in Safety Applications
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...
Centralized, Distributed, and Hybrid Safety Instrumented Systems
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...
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...
Safety Instrumented System Architecture Diagnostics
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...
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...
Ways to Build Process Safety Competency
An important topic we touched on in an earlier post was process safety competency. The post, Developing Safety Competency, noted the importance of people involved in the safety lifecycle who must be competent in the areas of this lifecycle in which they interact....
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...
Burner Management Systems with DeltaV SIS
Thanks to Emerson's Mike Boudreaux and Kim Conner for writing this post while I'm on vacation this week. Emerson's David Sheppard presented A straightforward approach using DeltaV SIS for typical BMS systems at Emerson Exchange. David is a certified functional safety...
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