Instrument Fault Detection in a Pressurized Water Reactor Pressurizer
- 1 January 1982
- journal article
- research article
- Published by Taylor & Francis in Nuclear Technology
- Vol. 56 (1) , 23-32
- https://doi.org/10.13182/nt82-a32877
Abstract
A technique of functional redundancy (as opposed to hardware redundancy) for detecting incipient failures in process instruments is applied to a simulation of the loss-of-fluid test pressurizer. The failure detection scheme consists of a set of five Kalman filters and a logical means for combining estimated state variables with instrument signals to produce decision functions, which identify faults, as they occur, in each of five instruments. Test data from the simulated plant show that prompt detection of both bias faults and high noise faults is possible during small transient fluctuations in the pressurizer from its nominal operating state.Keywords
This publication has 3 references indexed in Scilit:
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- An innovations approach to fault detection and diagnosis in dynamic systemsAutomatica, 1971