References to the use of butterfly valves date back to James Watt, who: …made use of a butterfly valve in his steam engine, and the first Mercedes car built around 1901 introduced a butterfly valve in the fuel intake linked to the accelerator pedal. Wikipedia describes butterfly valves as from: …a family of valves called […]
Sometimes an email exchange turns up something developed years ago that still has great value. So is this case with an article I received as an attachment on final control elements and their suitability in safety instrumented functions (SIFs), a.k.a. safety loops. The article, When SIL suitability is required for final control elements, was written […]
Managing pressure is a fundamental control challenge for most process manufacturers and producers. A frequent question is whether a pressure regulator or control valve is best for a particular application. At last fall’s Emerson Exchange, I live-blogged a great presentation by Keith Erskine with Emerson local business partner, Puffer-Sweiven and Fluor‘s Vince Mezzano on this […]
Emerson’s Carsten Thoegersen and Emanuele Rivolta shares his expertise on high-integrity pressure protection systems in process safety applications. Their abstract: HIPPS (High-Integrity Pressure Protection System) is a part of the Safety Instrumented System (SIS) & designed as the “last line of defence” preventing overpressure, loss of containment & fugitive emissions. A key driver reducing or […]
Final elements such as safety shutdown valves, emergency isolation valves, blowdown valves, etc., in safety instrumented functions (SIFs) are equipped with various accessories such as digital valve controllers, solenoid valves (SOV), and volume boosters, to name a few. Emerson’s Riyaz Ali shared a draft of a paper he is developing about the different approaches with […]
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