Expert system for online surveillance of nuclear reactor coolant pumps
First Claim
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1. An expert system for determining the operability of a specified pump comprising:
- a set of pumps of which the specified pump is a member;
means for measuring physical parameters representative to the operations condition each pump of said set of pumps;
means for acquiring data generated by said measuring means;
an artificial-intelligence based inference engine coupled to said data acquiring means where said inference engine applies a sequential probability ratio test to statistically evaluate said acquired data to determine a status for the specified pump and its respective measuring means by continually monitoring and comparing changes in a specific operational parameter signal acquired from a plurality of measurement means;
means for transferring said status generated by said interference engine to an output system.
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Abstract
An expert system for online surveillance of nuclear reactor coolant pumps. This system provides a means for early detection of pump or sensor degradation. Degradation is determined through the use of a statistical analysis technique, sequential probability ratio test, applied to information from several sensors which are responsive to differing physical parameters. The results of sequential testing of the data provide the operator with an early warning of possible sensor or pump failure.
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Citations
9 Claims
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1. An expert system for determining the operability of a specified pump comprising:
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a set of pumps of which the specified pump is a member; means for measuring physical parameters representative to the operations condition each pump of said set of pumps; means for acquiring data generated by said measuring means; an artificial-intelligence based inference engine coupled to said data acquiring means where said inference engine applies a sequential probability ratio test to statistically evaluate said acquired data to determine a status for the specified pump and its respective measuring means by continually monitoring and comparing changes in a specific operational parameter signal acquired from a plurality of measurement means; means for transferring said status generated by said interference engine to an output system. - View Dependent Claims (2, 3, 4, 5, 9)
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6. A method for early determination of pump or pump sensor degradation comprising the steps of:
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monitoring physical parameters representative of the operating condition of said pump through the use of a plurality of sensors; transmitting said data to a data acquisition system and subsequently to an artificial-intelligence inference engine; statistically analyzing on said data arriving at said inference engine through the use of a sequential probability ratio test;
using said sequential probability ratio test to establish a status for said sensors and said pump;transmitting said status to an output device. - View Dependent Claims (7, 8)
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Specification