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Safety Instrumented System Diagnostics to Prevent, Not Initiate Safety Trips
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Jim Cahill
24 May 2012
Abnormal Situation Prevention
IEC 61511
safety instrumented function
Safety
process safety
safety instrumented system
logic solver
safety transmitter
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Safety Instrumented System Diagnostics to Prevent, Not Initiate Safety Trips
Emerson’s Mike Boudreaux pointed me to a great blog post by exida’s Principal Partner, Dr. William Goble. The post, I Don’t Want No D*** Diagnostics! describes how automatic diagnostics in a safety-rated transmitter led to a false trip, much to the displeasure of the impacted control engineer and plant staff. Dr. Goble describes the incident: [...]