System platform for calibrating radioactive aerosol monitoring equipment and working method thereof

A technology for monitoring equipment and calibration systems, applied in the field of system platforms, can solve problems such as working state deviation, low calibration confidence, inaccurate radioactivity concentration, etc., and achieve the effect of adjustable measurement range and high precision

Active Publication Date: 2016-10-26
武汉海王核能装备工程有限公司
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Problems solved by technology

At present, most of the radioactive aerosol monitoring equipment adopts the secondary calibration method, that is, the geometric detection efficiency of the aerosol detector is calibrated by replacing the gaseous radioactive aerosol with a solid radioactive source, which has the advantages of simple equipment, convenient operation, and low cost. The disadvantage is that because the solid radioactive source is a point source or an area source, not a r

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  • System platform for calibrating radioactive aerosol monitoring equipment and working method thereof

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Embodiment Construction

[0029] The technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings and embodiments.

[0030] Such as figure 1 As shown, this embodiment provides a calibration system platform for radioactive aerosol monitoring equipment, including an aerosol generating device, a standard aerosol activity concentration measuring device, an aerosol monitoring device to be calibrated, an aerosol recovery device, electrical control and monitoring station, etc.

[0031]The aerosol generating device includes an aerosol gas path and a dilution gas path, and the aerosol gas path includes a high-purity nitrogen cylinder HPN1, a pressure reducing valve VC1, an aerosol generator, a solenoid valve EV1, and an aerosol gas path connected in sequence. The end is connected to the dilution bottle, and the dilution gas circuit includes a high-purity nitrogen cylinder HPN2, a pressure reducing valve VC2, a flow meter FM1, a manual...

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Abstract

The invention belongs to the field of radiation protection, and provides a system platform for calibrating radioactive aerosol monitoring equipment and a working method thereof. The platform comprises an aerosol generation device, a standard aerosol activity concentration measurement device, a to-be-calibrated aerosol monitoring equipment device, an aerosol recycling device, an electrical control and monitor console, and the like. According to the invention, radioactive aerosol generated by the aerosol generation device simultaneously flows through the standard aerosol activity concentration measurement device and the to-be-calibrated aerosol monitoring equipment device, the obtained radioactive activity concentration is equal, the standard aerosol activity concentration measurement device goes through standard measurement and can accurately measure the activity concentration values of gaseous radioactive aerosol of different activity levels and different types, and thus, a to-be-calibrated detector can be calibrated. The system platform has the advantages of dynamic calibration, high precision, adjustable measurement range, synchronous measurement by the standard device and the to-be-calibrated device, applicability to online monitoring and offline monitoring, and the like.

Description

technical field [0001] The invention belongs to the field of radiation protection, in particular to a system platform for calibrating radioactive aerosol monitoring equipment. Background technique [0002] Radioactive aerosol is a dispersed system formed by solid or liquid radioactive particles suspended in the air or gas medium, and is one of the main radioactive pollutants in nuclear-related places such as nuclear power plants. There are many ways to produce radioactive aerosols, such as the dust produced during the mining, crushing, screening, and grinding of uranium ore, and the formation of aerosols from the solution and meteorological chemical reactions at room temperature during the reprocessing of nuclear fuel, especially in nuclear power plants. A large amount of radioactive aerosols will be produced under accident conditions. Radioactive aerosols have a high ionization effect and are the main threat to human exposure. Therefore, monitoring radioactive aerosols is ...

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Application Information

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IPC IPC(8): G01T7/00G01N33/00
CPCG01N33/0006G01N33/0055G01T7/005
Inventor 陈祥磊万新峰施礼裴煜刘巍程翀王益元许浒
Owner 武汉海王核能装备工程有限公司
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