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Company Zesco recently experienced a minor earthquake causing no damages, but resulted in a temporary power outage. Employees attempted to leave the building, but the doors were locked. What MOST likely caused the doors to remain locked?
The doors jammed due to earthquake
The door access control system was set to function in a fail-secure mode.
The buildings keys were lost in the earthquake
The access control system was set to function in Fail-secure. This means when a failure occurs, the system is set to prioritize security over safety, thus locking the doors. A fail-safe would cause the system to prioritize safety over security, opening the doors and allowing employees to leave the building.
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