Benchmarking an expert fault detection and diagnostic system on the Three Mile Island accident event sequence
Abstract
Early fault identification systems enable detecting and diagnosing early onset faults or fault causes which
allow maintenance planning on the equipment showing signs of deterioration or failure. This includes
valve and leaks and small cracks in steam generator tubes usually detected by means of ultrasonic inspection.
We have shown (Cilliers and Mulder, 2012) that detecting faults early during transient operation in
NPPs is possible when coupled with a reliable reference to compare plant measurements with during
transients. We have also shown (Cilliers, 2013) that by correlating the fault detection information as
received from distributed systems it is possible to diagnose the faults in terms of location and magnitude.
This paper makes use of the techniques and processes developed in the previous papers and apply it to
a case study of the Three Mile Island accident. In this way we can determine how the improved information
available could present the operator with a better idea to the state of the plant during situations
where a combination of faults and transients prevents the operator and conventional systems to recognise
the abnormal behaviour
URI
http://hdl.handle.net/10394/13589https://www.sciencedirect.com/science/article/pii/S030645491300340X
https://doi.org/10.1016/j.anucene.2013.06.037
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