Ideally, the system may recover from certain hazards (operational errors, exceptional conditions, external threats ...) easily and resume normal operation instantly, with minimal attention and effort by the operator. If a disturbance is not resolved instantly (by rebounding), it transforms into a hazard.
The effect of a hazard depends on the risk inherent to the system operation and on the operators awareness about the risky situation.
The strategy for hazard management is:
The way the machine informs the operators about the exceptional situation is by alarms .
Updated on 05 Nov 2016.