Patent US5309485A successfully refreshed from Google Patents.
US5309485A
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Core automated monitoring system
Assignee: General Electric Co
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Filing: 1992-07-06
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Granted: 1994-05-03
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Expires: 2012-07-06
Abstract
Abstract An automated monitoring system and method of operation is provided for a nuclear reactor having a pressure vessel containing a reactor core for boiling water to generate steam. A plurality of monitors provide signals for respective monitoring parameters for monitoring operation of the reactor, and a computer includes a database therein containing predetermined setpoints for the monitoring parameters. The computer identifies abnormal and normal behavior of the monitoring parameters based on the database, and determines cause of abnormal behavior of the monitoring parameters using artificial intelligence. A warning i also provided to identify the cause of the monitoring parameter abnormal behavior. And, automatic mitigation action may also be effected.
Inventors
- 👤 Fred C.-C. Chao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:48
CPC Classifications
G; G21; G21D; G21D3/00; G21D3/001; G21C; G21C17/00; Y; Y02; Y02E; Y02E30/00; Y02E30/30; Y10; Y10S; Y10S706/00; Y10S706/90
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
136 words
A core automated monitoring system (CAMSYS) comprising: a nuclear reactor including a reactor pressure vessel containing a nuclear reactor core for boiling water in said vessel to generate steam; a plurality of monitors for monitoring operation of said nuclear reactor, each monitor providing a signal for a respective monitoring parameter; and a CAMSYS computer including: a database containing predetermined setpoints for said monitoring parameters; means for identifying abnormal and normal behavior of said monitoring parameters based on said database; means for determining cause of abnormal behavior of said monitoring parameters including predetermined artificial intelligence rules associated with each, primary one, of said monitoring parameters for determining said abnormal behavior cause based on performance of preselected related, secondary, ones of said monitoring parameters; and means for determining a control parameter to mitigate said monitoring parameter abnormal behavior.
Claim 2
Dependent Claim
136 words
A core automated monitoring system (CAMSYS) comprising: a nuclear reactor including a reactor pressure vessel containing a nuclear reactor core for boiling water in said vessel to generate steam; a plurality of monitors for monitoring operation of said nuclear reactor, each monitor providing a signal for a respective monitoring parameter; and a CAMSYS computer including: a database containing predetermined setpoints for said monitoring parameters; means for identifying abnormal and normal behavior of said monitoring parameters based on said database; means for determining cause of abnormal behavior of said monitoring parameters including predetermined artificial intelligence rules associated with each, primary one, of said monitoring parameters for determining said abnormal behavior cause based on performance of preselected related, secondary, ones of said monitoring parameters; and means for determining a control parameter to mitigate said monitoring parameter abnormal behavior.
Claim 3
Dependent Claim
20 words
A CAMSYS according to claim 1 further comprising means for providing a warning identifying said monitoring parameter abnormal behavior cause.
Claim 4
Dependent Claim
69 words
A CAMSYS according to claim 2 wherein said secondary monitoring parameters are preselected for each primary monitoring parameter to determine said abnormal behavior cause based on all three of: predetermined analytical transient and accident operating performance of said reactor; actual operating records of transient and accident operating performance of said reactor; and interrelationship of said primary and secondary monitoring parameters based on predetermined reactor physics and thermal hydraulic principles.
Claim 5
Dependent Claim
70 words
A CAMSYS according to claim 2 wherein said secondary monitoring parameters are preselected for each primary monitoring parameter to determine said abnormal behavior cause based on at least one of: predetermined analytical transient and accident operating performance of said reactor; actual operating records of transient and accident operating performance of said reactor; and interrelationship of said primary and secondary monitoring parameters based on predetermined reactor physics and thermal hydraulic principles.
Claim 6
Dependent Claim
77 words
A CAMSYS according to claim 4 wherein said primary monitoring parameter is neutron flux and said secondary monitoring parameters include core flowrate and control rod density change rate; and said artificial intelligence rules identify a recirculation flow control system problem as a cause of abnormal behavior of said neutron flux exceeding a given setpoint wherein said core flowrate also exceeds a given setpoint without normal demand therefor and said control rod density change rage is substantially zero.
Claim 7
Dependent Claim
25 words
A CAMSYS according to claim 4 wherein said CAMSYS computer further comprises means for adjusting said control parameter to mitigate said monitoring parameter abnormal behavior.
Claim 8
Dependent Claim
76 words
A CAMSYS according to claim 6 further including a nuclear system protection system (NSPS) operatively joined to said monitors and effective to cause reactor trip and operation of reactor safety systems; and wherein said behavior identifying means determine rate of said abnormal behavior including a slow transient, a fast transient relative to said slow transient, and a severe transient faster than said fast transient, with said slow, fast, and severe transients effecting different levels of mitigation.
Claim 9
Dependent Claim
134 words
For a nuclear reactor including a reactor pressure vessel containing a nuclear reactor for boiling water in said vessel to generate steam, and a plurality of monitors for monitoring operation of said nuclear reactor, each monitor providing a signal for a respective monitoring parameter, a method of operation comprising: providing a database containing predetermined setpoints for said monitoring parameters; identifying abnormal and normal behavior of said monitoring parameters based on said database; automatically determining cause of abnormal behavior of said monitoring parameters in a computer based on said database and predetermined artificial intelligence rules associated with each, primary one, of said monitoring parameters for determining said abnormal behavior cause based on performance of preselected related, secondary, ones of said monitoring parameters; and automatically determining a control parameter to mitigate said monitoring parameter abnormal behavior.
Claim 10
Dependent Claim
134 words
For a nuclear reactor including a reactor pressure vessel containing a nuclear reactor for boiling water in said vessel to generate steam, and a plurality of monitors for monitoring operation of said nuclear reactor, each monitor providing a signal for a respective monitoring parameter, a method of operation comprising: providing a database containing predetermined setpoints for said monitoring parameters; identifying abnormal and normal behavior of said monitoring parameters based on said database; automatically determining cause of abnormal behavior of said monitoring parameters in a computer based on said database and predetermined artificial intelligence rules associated with each, primary one, of said monitoring parameters for determining said abnormal behavior cause based on performance of preselected related, secondary, ones of said monitoring parameters; and automatically determining a control parameter to mitigate said monitoring parameter abnormal behavior.
Claim 11
Dependent Claim
19 words
A method according to claim 8 further comprising adjusting said control parameter to mitigate said monitoring parameter abnormal behavior.
Claim 12
Dependent Claim
18 words
A method according to claim 9 further comprising providing a warning identifying said monitoring parameter abnormal behavior cause.
Claim 13
Dependent Claim
77 words
A method according to claim 10 wherein said primary monitoring parameter is neutron flux and said secondary monitoring parameters include core flowrate and control rod density change rate; and said artificial intelligence rules identify a recirculation flow control system problem as a cause of abnormal behavior of said neutron flux exceeding a given setpoint wherein said core flowrate also exceeds a given setpoint without normal demand therefor and said control rod density change rage is substantially zero.
References Cited (Backward Citations)
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| 7.5 Years (Year 8) | 2001-05-02 | 2001-11-01 | 2002-05-03 | $3760.00 | Window Closed / Lapsed |
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