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Airborne radioactive monitor

A radioactivity and monitor technology, applied in the field of nuclear radiation monitoring, can solve the problems of process safety and personnel safety hazards of nuclear facilities and equipment, long response time, and high detection lower limit, achieve high sensitivity and rapid measurement, high degree of automation, and improve detection efficiency. Effect

Active Publication Date: 2017-01-04
武汉海王核能装备工程有限公司
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Problems solved by technology

[0003] Existing airborne radioactivity monitoring equipment in nuclear facilities includes radioactive aerosol detectors, radioactive iodine detectors and radioactive gas detectors, signal processing devices, sampling and other components. The measurement sensitivity of the equipment is low, the detection limit is high, and the response time is long. It cannot well meet the high-sensitivity and fast-response monitoring requirements of highly hazardous airborne radioactive substances, which brings hidden dangers to the equipment process safety and personnel safety of nuclear facilities

Method used

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0027] Such as figure 1 , 2 , 3, and 4, in this embodiment, the air pump 20 provides the sampling power, and the gas enters the aerosol iodine detector 3 after entering the monitor from the sampling gas inlet 1.

[0028] After the sampling gas passes through the air inlet end cover 26 in the aerosol iodine detector 3, the radioactive aerosol therein is filtered by the filter paper 27, and then the radioactive iodine in the sampling gas is filtered by the active carbon filter box 28, and then the gas leaves through the gas outlet end cover 29 Aerosol Iodine Detector3. The gamma rays emitted by the radioactive aerosol in the filter paper 27 and the radioactive iodine in the activated carbon filter box 28 are detected by LaBr with high detection efficiency. 3The scintillator 22 detects and converts the optical signal to the photocathode of the photomult...

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Abstract

The invention belongs to the nuclear radiation monitoring technical field and provides an airborne radioactive monitor. The airborne radioactive monitor includes an aerosol iodine detection system, a radioactive gas detection system and a sampling system; a sampling gas inlet end is connected with the aerosol iodine detection system and the sampling system; the outlet of the aerosol iodine detection system is divided into two paths, wherein one pipeline is connected with the radioactive gas detection system, and the other pipeline is connected with a sampling gas outlet end and is provided with a manual shut-off valve; and the outlet of the sampling system is connected with the sampling gas outlet end. The airborne radioactive monitor of the invention has the advantages of high sensitivity, low detection limit and short response time, and can better realize fast and effective measurement of airborne radioactive material.

Description

technical field [0001] The invention relates to the technical field of nuclear radiation monitoring, in particular to an airborne radioactivity monitor, which is used for automatic on-line monitoring of airborne radioactivity in the environment. Background technique [0002] During the operation of nuclear facilities, various artificial airborne radioactive substances will be produced. The leakage of these artificial airborne radioactive substances into the atmosphere inside the plant may cause radiation damage to the staff of the nuclear facility. Radiation damage to surrounding residents. Real-time monitoring of the content of airborne radioactive substances in the atmospheric environment of nuclear facilities can ensure the radiation safety of nuclear facility staff and ensure the safe operation of nuclear-related processes. Therefore, the requirements for airborne radioactive monitoring equipment for nuclear facilities are increasingly urgent. [0003] Existing airborne...

Claims

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Application Information

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IPC IPC(8): G01T1/203G01T1/202
CPCG01T1/202G01T1/203
Inventor 陈祥磊程翀王益元许浒刘巍万新峰施礼周军
Owner 武汉海王核能装备工程有限公司
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