Are spurious alarms avoided?
Spurious alarms are following on false alarms because of shutdown actions. A high number of false alarms may cause operators to become insensitive to safety alarms and subsequently fail to respond to abnormal situations. They may try to "beat" the safety system by inhibiting safety functions or interpret false alarms as being "real" alarms. Check the frequency of alarms caused by testing of the sensors. Is there a system for planned testing and correlation on sensors?
Comments/Recommendations
NUREG0700, point 5.3-1, 2, p. 306.
DC: Are spurious alarms logged in order to reduce false alarms?