Radioactive aerosol particle recovery device

Abstract

The invention discloses a radioactive aerosol particle recovery device, comprising an inlet nozzle and an inlet duct; a plurality of impact orifice plates with specific orifice sizes are assembled below the inlet duct in order; a collection carrier for intercepting particle with the determined scope is arranged below each impact orifice plate; a high efficient filter film installed in the filter film liner is arranged below the lowest collection carrier; the particles passing through the collection carrier reach the next impact orifice plate or high efficient filter film via a transitional tube; an exhaust tube nozzle is arranged below the filter film liner; and the exhaust tube nozzle is connected with an exhaust power regulation and control device for wholly operating. In the radioactive aerosol particle recovery device, the particles in the different ranges can be collected on the different carrier; the radioactive aerosol particle recovery device is applicable to radioactive aerosol mass spectrometer measurement with many specific purposes or the related measurement thereof. Furthermore, the recovery device is also applicable to the special site where it is not convenient to sample by using the common aerosol sampling device, so that the recovery device is in accordance with the special sampling and monitoring requirement of certain aerosols.

Description

technical field [0001] The invention belongs to the measurement of some radioactive aerosols with specific purposes and requirements in the field of nuclear technology, especially in the field of mass spectrometer measurement technology that needs to finely measure the radioactive swabs of nuclear facilities and equipment, and especially relates to It is a radioactive aerosol particle recovery device. Background technique [0002] In some monitoring or inspections with special purposes and requirements in nuclear facilities, it is required to analyze and measure the uranium content and isotope ratio (235U / 238U) on the contaminated surface of nuclear facility equipment. The mass spectrometer analyzes and measures the uranium content and isotope ratio (235U / 238U) in the wiped samples. Practice has proved that in order to achieve a certain monitoring or monitoring sensitivity, it is often not feasible to directly measure and analyze the wiped samples. How to recover the radio...

AI Technical Summary

Problems solved by technology

How to recover the radioactive particles in the swab sample to some kind of carrier suitable for effective mass spectrometry analysis involves a cumbersome sample preparation process

In addition, radioactive aerosol pollution in nuclear facilities and surface contamination on nuclear equipment need to be monitored, sometimes to monitor the pollution status of certain narrow spaces or dead corners of equipment, or to obtain some information about these dead corners or narrow spaces. For some special information, it is often difficult to sample or recover with the usual aerosol sampling device or surface contamination wipe tool

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