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How many bypass on ESD Systems?

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Stokely

According to SIL2 or SIL3, how many securities that you can allow to bypass on an Emergency shutdown system (ESD)?
 
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PhilCorso

Stokely... my system, called Pretect, had a key-operated Bypass-Switch for for each input-tripping variable, and a key-operated Disable-Switch for each output-action variable.

Regards, Phil Corso

 
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