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Posts Tagged ‘SIS solenoid’

Exercising Solenoid Valves in Safety Applications

Posted in Final Control Element, Fluid and Motion Control on Monday, January 6th, 2020. No comments yet
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Valves used in safety applications tend to stay in opened or closed positions for very long, time intervals. As Emerson’s Joe McHugh explained in a Plant Engineering article, Double up on solenoid safety: …all valves experience stiction if they remain inactive for too long. (Note: Stiction is the friction that tends to prevent stationary surfaces […]

Field Device Sharing Between Control and Safety Systems

Posted in Measurement, Safety on Thursday, February 10th, 2011. No comments yet
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Emerson’s Mike Boudreaux has been receiving great questions on process safety and the IEC 61511 global safety standard during some of the recent Safety Lifecycle Seminars. He’s written a post to address one of them: A very common topic of discussion is the sharing of field devices between the basic process control system (BPCS) and […]