A method for online localization of in-pile abnormal components based on neutron noise analysis

By utilizing existing neutron detectors within the reactor for neutron noise analysis, abnormal components can be located in real time, solving the problem of early diagnosis of abnormal components before accidents occur within the reactor and achieving progress in safe operation and diagnostic systems.

CN116525160BActive Publication Date: 2026-03-10INSTITUTE OF NUCLEAR PHYSICS AND CHEMISTRY CHINA ACADEMY OF ENGINEERING PHYSICS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-05-04
Publication Date
2026-03-10

AI Technical Summary

Technical Problem

Existing technologies lack reliable early diagnostic methods for abnormal components within the reactor, making it impossible to provide real-time warning information.

Method used

Neutron noise analysis is performed using existing neutron detectors within the reactor. Through spectrum analysis and theoretical calculations, combined with an algorithm for locating abnormal components within the reactor, abnormal components can be located in real time, providing early warning information.

Benefits of technology

It enables early diagnosis of abnormal components within the reactor before an accident, providing real-time warning information without the need for additional detectors, thus improving the safe operation of the reactor and the construction of the diagnostic system.

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Abstract

This invention discloses an online location method for abnormal components within the reactor based on neutron noise analysis. This method utilizes the detection signals from existing neutron detectors within the reactor for online analysis, eliminating the need for additional detectors. It combines the theoretical neutron noise spectrum of each component, calculated in advance for high-risk components that may have loosening, detachment, or local boiling within the reactor, with an in-reactor abnormal component location algorithm to provide real-time directional location of the abnormal components. This provides early warning information for reactor operation monitoring and fault diagnosis, and has significant implications for the safe operation of reactors and the construction of diagnostic systems.
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Citation Information

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