Patent ID: 8675805

Claim:
An automated periodic surveillance testing apparatus, the apparatus comprising: an automatic test and interface processor (ATIP) to generate a test initiation signal including a test value and to transmit the generated test initiation signal to a bistable processor (BP) and a coincidence processor (CP), when system conditions related to the digital reactor protection system satisfy selected permission conditions; and a control unit to output an analysis result for the data path between the BP and the CP using a first test result value corresponding to the test value from the BP and a second test to result value corresponding to the test value from the CP, which respond to the test initiation signal, wherein: the ATIP performs at least one of a device self-diagnosis, an on-line state diagnosis and an automatic logic test with respect to the digital reactor protection system; and the ATIP comprises: a BP on-line state diagnostic unit to perform comparison between two groups in a channel with respect to at least one of a process variable, a set value, and a trip/auxiliary trip state of the BP; a CP on-line state diagnostic unit to perform a comparison between groups with respect to a coincidence state of the CP of a group in a channel; another on-line state diagnostic unit to diagnose surveillance using a state signal from a Reactor Trip Switch Gear (RTSG), system cabinet or initiation circuit; and a pulsatile index monitoring unit to monitor at least one of pulsatile indices of the BP, the CP and the ATIP.