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Flow Control with VFD Pumps versus Control Valves

Posted in Energy, Final Control Element on Friday, April 1st, 2011. 10 comments so far
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A recent article explored the energy savings of variable frequency drive (VFD)-based centrifugal pumps versus control valves in flow control applications. The article, Eliminating the Control Valve sums its position in the subtitle, “Valves Are Energy Hogs; They Stick; They’re Prone to Mechanical Failure. So Why the Reluctance to Replace Them With VFDs?” The […]

Testing the Safety Valve in a Safety Instrumented Function

Posted in Emerson Exchange, Safety on Thursday, November 11th, 2010. No comments yet
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Safety instrumented functions (SIFs), also known as safety loops, are comprised of a sensor to sense the process condition, a logic solver to decide the safety action to take, and a final element to perform the action. Emerson’s Riyaz Ali and I & C Specialist’s C B Chakradhaar gave a presentation at the 2010 Emerson […]

Technology Trends in Process Safety

Posted in Safety, Technologies on Friday, June 25th, 2010. No comments yet
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Emerson’s Mike Boudreaux shared a Control Engineering Asia article written by the renowned process safety expert, Paul Gruhn. The article, Providing Process Safety, analyzes some of the latest trends in safety instrumented systems (SIS) designs for the process industries. Mike manages the DeltaV SIS brand and highlighted many of the areas in the article where […]

Control Valve Impact on Process Variability

Posted in Final Control Element on Wednesday, April 28th, 2010. No comments yet
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The March/April edition of Intech magazine features an article by‘s Greg McMillan–Key design components of final control elements. The article is derived from Greg’s new book, Essentials of Modern Measurements and Final Elements in the Process Industry. Final control elements, such as control valves, are used to control the process by changing the flow. […]

Better Operational Decisions from a Safety Viewpoint

Posted in Abnormal Situation Prevention, Safety on Monday, March 30th, 2009. No comments yet
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Recently at the International Health, Safety, Environment, and Loss Prevention Conference in Kuwait, Emerson’s David Walker had the opportunity to present on the topic of process safety. His presentation, Using a Smart Safety Instrumented System (SIS) to Make Better Operational Decisions, described the role of diagnostics in monitoring the health of the devices and surrounding […]