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Loose part diagnosis method for nuclear power station

A component diagnosis and nuclear power plant technology, applied to computer components, instruments, character and pattern recognition, etc., can solve problems such as failure to capture event signals, long cycle of analysis results, lack of expert technical support, etc.

Active Publication Date: 2010-06-23
NUCLEAR POWER INSTITUTE OF CHINA
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Problems solved by technology

At present, domestic nuclear power plant loose parts diagnosis technology still relies on foreign companies. For example, China General Nuclear Power Group pays an annual fee to France every year. When the loose parts monitoring system sends out an alarm signal, it collects and records relevant data and sends them to France for analysis. The disadvantages are It is often impossible to capture event signals, the cycle of analysis results is long, and there is no strong expert technical support

Method used

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  • Loose part diagnosis method for nuclear power station
  • Loose part diagnosis method for nuclear power station
  • Loose part diagnosis method for nuclear power station

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Embodiment Construction

[0053] The method for diagnosing loose parts of a nuclear power plant according to the present invention will be further described below in conjunction with specific embodiments.

[0054] When the nuclear power plant loose parts monitoring system detects a trigger event, it saves the original sampling data of the acceleration signals of each monitoring channel on the disk. The original sampling data file name of the triggering event is recorded together to form the event database. Each record in the event database corresponds to the corresponding data file, and each data table corresponds to the path of the corresponding data file. Use the specially written data transfer program to query the event database data table through the database query method, select the data table that needs to be transferred, and use the data link method to bundle and transfer the original sampling data to the mobile phone while transferring the database. hardware, U disk or other magnetic media. C...

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Abstract

The invention relates to a loose part diagnosis method for a nuclear power station, which comprises the steps as follows: (1) event database building; (2) event signal analysis; and (3) positioning and quantitative calculation. The loose part diagnosis method for the nuclear power station is used for fault monitoring and diagnosis for the nuclear power station, timely analyzes the loose part alarm events after a loose part monitoring system gives off the alarm fault signal, confirms the features of the loose part and estimates the positioning quality of the loose part. The positioning error of the loose part events is 0.5m, the quality estimation error of the loose part is plus-minus 50% and the energy estimation error is plus-minus 50%.

Description

technical field [0001] The invention relates to a method for diagnosing loose parts of a nuclear power plant, in particular to a method for diagnosing an alarm event issued by a monitoring system for loose parts of a nuclear power plant. Background technique [0002] After the nuclear power plant loose parts monitoring system detects an alarm event, it is necessary to diagnose and analyze the alarm event in a timely manner, confirm the nature of the alarm event (loose parts, falling parts, vibration or interference), locate the loose parts, and locate the loose parts. Estimate the mass and its collision energy, evaluate the hazards of the pressure boundary and key components in the impact flow channel, and provide a basis for taking shutdown maintenance measures. At present, domestic nuclear power plant loose parts diagnosis technology still relies on foreign companies. For example, China General Nuclear Power Group pays an annual fee to France every year. When the loose par...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M7/00G06K9/00
Inventor 刘才学胡建荣简捷盘世标
Owner NUCLEAR POWER INSTITUTE OF CHINA
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