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Gold/Mining/Energy : Canadian Oil & Gas Companies

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To: teevee who wrote (6567)	6/13/1999 3:24:00 AM
From: Gulo	of 24923

Actually, my major client is a refinery of sorts. I know of no actual controls in the entire 70,000 bbl/d facility that fit your scenario. Even those that can be centrally controlled have simple circuits that are not in any way dependent on date. That is, even if the programmable logic controllers were aware of date (many are not), they do not use the date in their control software. The central monitoring systems, of course, do use dates. If something did screw up there, it would make for an exciting hour or two. Another example would be H2S alarms that sound when they think they haven't been maintained since 1900. Neither would shut the plant down. Maybe refineries in the U.S. are different, but I doubt it. Maybe a process/control engineer familiar with other plants could comment. Regards.

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