4.3.2-2 Manual Silencing

Auditory signals should be silenced manually unless this interferes with other more critical actions.

Additional Information:
While manual silence is a generally desirable feature to get the operator's attention, it may become distracting to manually silence all alarms under high-alarm conditions. Guidelines 4.3.5-3 and 4.3.6-3 address alarm system configuration changes made either automatically or by operator-selection, such as automatic silence of auditory alerts for lower priority alarms under high- alarm conditions.