Typical nuclide monitor of fuel element failure

A technology of fuel elements and monitors, applied in the field of radiation monitoring, which can solve the problems of impossibility to arrange nuclear facility sites, inconvenient use, complicated operation, etc., and achieve the effects of good environmental adaptability, corrosion avoidance, stability and linear satisfaction

Active Publication Date: 2015-02-18
中国船舶集团有限公司第七一九研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the high-purity germanium probe needs to work at low temperature (<-196°C), a complex cooling system is required. At the same time, the high-purity germanium detection system is not allowed to have obvious vibration during operation, otherwise it will affect the normal operation of the equipment. For laboratory use, it is impossible to arrange at the site of a nuclear facility with a complex environment
In addition, the energy spectrum processing software compiled by the computer requires the participation of professionals in the process of analyzing the gamma energy spectrum, which is complicated to operate and inconvenient to use.

Method used

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  • Typical nuclide monitor of fuel element failure
  • Typical nuclide monitor of fuel element failure
  • Typical nuclide monitor of fuel element failure

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0022] like figure 1 As shown, the monitoring instrument of the present invention includes two parts, a detection sampling device 1 and a signal processing device 2, and the detection sampling device 1 and the signal processing device 2 are connected by cables; wherein, the signal processing device 2 includes a main amplifier 3, a sampling unit 4 and a host unit 5. When it is necessary to debug, monitor, and record energy spectrum data, an additional component computer 5 is optional, and the monitor can work independently without the computer.

[0023] like figure 2 As shown, the detection and sampling device 1 is composed of a spiral sampling pipeline 18 , a lead shield 15 and a detector core 12 . The helical sampling line 18 is used to sample the water in the primary loop, and let it flow through the helical sampling line at a constant sp...

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Abstract

The invention belongs to the field of radiation monitoring technology and provides a typical nuclide monitor of fuel element failure. The monitor is realized based on a typical nuclide detection method of fuel element failure and comprises a detection sampling unit and a signal processing unit. The detection sampling unit is composed of a spiral sampling line, a lead shielding body and a detector core body. The signal processing unit comprises a main amplifier, a sampling unit and a host unit. The monitor provided by the invention can carry out quantitative monitoring on typical fission nuclide in a loop coolant by a gamma spectrometry technology, so as to accurately and timely judge whether a fuel element is damaged. The typical nuclide monitor has characteristics of high precision, fast response and good real-time performance, and is simple and easy to use.

Description

technical field [0001] The invention belongs to the technical field of radiation monitoring, and in particular relates to a typical nuclide monitor for fuel element damage, which is realized based on a typical fission nuclide detection method for fuel element damage. Background technique [0002] There are thousands of fuel elements in the reactor core. These fuel elements have been in high temperature, high pressure, high radiation, and high corrosion environment for a long time, and are subjected to the scour of the main heat carrier, internal thermal stress, etc., especially if the fuel elements exist in the manufacturing process. Some degree of breakage may occur when there are minor flaws. Once the nuclear fuel element is damaged, the fission products will enter the main heat carrier, increasing the radioactive level of the main heat carrier. Leakage will cause pipeline and equipment pollution. Leakage of the primary circuit system will lead to increased radiation lev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21C17/04
CPCG21C17/041G21C17/10Y02E30/30
Inventor 程翀许浒代传波罗鹏廖武蔺常勇吴荣俊郭智荣
Owner 中国船舶集团有限公司第七一九研究所
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