Optimized critical accident alarm method and system

A critical accident and alarm system technology, applied in the field of nuclear safety, can solve the problems that the judgment of the size of the accident cannot be detailed and reliable, the shortest may only be a few milliseconds, tens of milliseconds, and the accident process cannot be reproduced and reversed, so as to shorten the alarm time , strong applicability, detailed and accurate measurement data

Active Publication Date: 2021-02-05
CHINA INSTITUTE OF ATOMIC ENERGY
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Problems solved by technology

[0005] However, the original criticality alarm system generally has the following problems. The data storage of the original criticality alarm system is generally stored in a cycle of 1 second or longer, and the shortest duration of criticality may only be a f

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  • Optimized critical accident alarm method and system
  • Optimized critical accident alarm method and system
  • Optimized critical accident alarm method and system

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[0044]The present invention will be described in detail below with reference to the drawings and embodiments.

[0045]Such asfigure 1 As shown, the present invention discloses an optimized critical accident alarm method, including:

[0046]S100. Collect detector data according to a preset collection cycle;

[0047]S200. Accumulate the collected data of each collection period to obtain an accumulated value;

[0048]S301: When the accumulated value reaches the preset value, calculate and store the accumulated dose rate according to the accumulated value and the current accumulation time;

[0049]S302: When the preset maximum time is reached but the accumulated value fails to reach the preset value, calculate and store the accumulated dose rate according to the accumulated value and the maximum time;

[0050]S400: Compare the cumulative dose rate with the alarm threshold, and decide whether to alarm according to the comparison result.

[0051]In the present invention, the acquisition period is 1-60 millise...

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Abstract

The invention relates to an optimized critical accident alarm method and system. The method comprises the following steps: acquiring detector data according to a preset acquisition period; accumulating the acquired data of each acquisition period to obtain an accumulated value; when the accumulated value reaches a preset value, calculating and storing an accumulated dose rate according to the accumulated value and the current accumulated time; when the preset maximum time is reached but the accumulated value does not reach the preset value, calculating and storing an accumulated dose rate according to the accumulated value and the maximum time; and comparing the accumulated dose rate with an alarm threshold, and determining whether to give an alarm or not according to a comparison result.The system comprises a data acquisition module, a data accumulation module, a first data calculation module, a second data calculation module and an alarm module. The beneficial effects of the invention are that the method carries out the data collection in a period far less than a conventional data collection period, can timely find a critical accident state and give an alarm, shortens the alarmtime under a critical accident, and enables the provided data to be more detailed and precise because of the short collection period.

Description

technical field [0001] The invention belongs to the field of nuclear safety, and in particular relates to an optimized 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 for Fissile ...

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Application Information

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IPC IPC(8): G08B21/18G08B21/12G08B21/10G01T1/24
CPCG08B21/182G08B21/12G08B21/10G01T1/248
Inventor 夏兆东朱永福刘锋李航
Owner CHINA INSTITUTE OF ATOMIC ENERGY
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