April 2004

Columns

HP Automation Safety: Let the numbers answer the question

Many companies in the hydrocarbon processing industry are working to understand and implement the new functional safety standards. I am not sure why there is so much interest, but many say they are lo..

Goble, W., exida LLC

Many companies in the hydrocarbon processing industry are working to understand and implement the new functional safety standards. I am not sure why there is so much interest, but many say they are looking to take advantage of the potential cost savings. "I want to use two pressure transmitters hooked to my PLC to design a safety integrity level (SIL) 2 safety instrumented function (SIF). Will this meet the new IEC 61511 standard?" Numerous questions naturally arise. Design issues are the ones I seem to hear the most. Questions like, "I want to use two pressure transmitter

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