If critical equipment is not regularly monitored, an alarm should be provided to indicate malfunctions or conditions that would cause personnel injury or equipment damage.
Additional Information:
The alarm may be auditory, visual, or both. If an auditory alarm would be overly intrusive or disruptive, the alarm should be visual. A combination of auditory and visual alarms should be provided when the ambient illumination may impair the maintainer's ability to see the latter. A high degree of ambient illumination may cause visual glare, affecting the detection of light-emitting alarms. A low degree of ambient illumination may interfere with their ability to detect and read alarms on light- reflecting displays.