Alerting attributes

The alerting quality of an alarm signal is determined by its effect on the operator's behavior in case of hazard, as follows:

Attention	If following a fault, the operator is required to recognize the state change immediately, the alarm should alert the operator, to ensure that the operator stops doing other things.
Risk recognition	The alarm should provide proper indication of the risk level associated with the hazard
Awareness of the grace time	The alarm should indicate the time available for the operator before the hazard materializes to a threat
Hazard identification	The alarm should indicate its source, the fault that triggered the alarm
Guidance	The alarm should include information about the proper way to respond and recover.