Novel global critical accident alarm method and system

A critical accident and alarm system technology, applied in the direction of alarms, instruments, etc., can solve problems such as the inability to quickly judge critical accidents, the number of alarm systems, and the inability to give the magnitude of critical accidents.

Active Publication Date: 2020-10-20
CHINA INSTITUTE OF ATOMIC ENERGY
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0005] 1. For places with many critical accident risk points, a large number of alarm systems need to be purchased
[0006] 2. When an accident occurs, there may be alarms from multiple sets of adjacent systems, and it is impossible to quickly determine where the critical accident occurred
[0007] 3. The existing criticality alarm system can only trigger an alarm, but cannot give the size of the criticality accident, and the total number of nuclear fuel fissions in the accident is unknown

Method used

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  • Novel global critical accident alarm method and system
  • Novel global critical accident alarm method and system
  • Novel global critical accident alarm method and system

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Embodiment Construction

[0037] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0038] Such as figure 1 As shown, the present invention provides a novel global critical accident alarm method, adopting at least three detectors to supervise the same critical accident risk point, and the distances between the detectors supervising the same critical accident risk point and the critical accident risk point are all different; Specifically include:

[0039] S100 judging whether a critical accident occurs;

[0040] When a critical accident occurs in the S200, the position of the critical accident area is judged according to the dose rate response of detectors at different positions;

[0041] The S300 calculates the dose rate based on the measured values ​​of the relevant detectors and the distance from the critical accident area, and integrates the curve of the fission rate versus time obtained from the corresponding relationship betwe...

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Abstract

The invention relates to a novel global critical accident alarm method and system. The method comprises the following steps: judging whether a critical accident occurs or not; when a critical accidentoccurs, judging the position of a critical accident area according to dose rate responses of detectors at different positions; and carrying out integral processing on a measurement value of the related detector to obtain the total fission times under the critical accident condition. The system comprises a detection unit; a critical accident judgment unit used for judging whether a critical accident occurs or not; a position confirmation unit used for judging the position of a critical accident area according to the dose rate response of detectors at different positions when a critical accident occurs; and a total fission frequency calculation unit used for carrying out integral processing on the measurement value of the related detector to obtain the total fission frequency under the critical accident condition. The beneficial effects of the invention are that the method can give an alarm and determine an accident point under the condition of a critical accident, and quickly estimatesthe size of the accident and the total number of fission times after the accident is finished.

Description

technical field [0001] The invention belongs to the field of nuclear industry safety, and in particular relates to a novel global critical accident alarm method and system. Background technique [0002] Nuclear criticality accidents refer to energy and radioactive material release events caused by self-sustaining or divergent neutron chain reactions of fissile substances, and generally refer to prompt supercritical accidents (criticality accidents mentioned later refer to prompt supercritical accident). Although a nuclear criticality accident will not instantly release most of the fission energy of nuclear materials like an atomic bomb explosion, it will still produce a large amount of prompt neutrons and gamma rays when the accident occurs, causing overdose to nearby workers radiation, and even death. [0003] The national standard "GB15146.9-94 Performance and Inspection Requirements for Nuclear Criticality Safety Nuclear Criticality Accident Detection and Alarm System f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08B21/10G08B21/12G08B21/18
CPCG08B21/10G08B21/12G08B21/182
Inventor 朱庆福李航刘锋夏兆东刘洋
Owner CHINA INSTITUTE OF ATOMIC ENERGY
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