Portable sampling device used for air tritiated water

Abstract

The invention provides a portable sampling device used for air tritiated water. A semiconductor refrigeration sheet and a cooling fan inside of the sampling device are connected to a power supply through wires, the heating surface of the semiconductor refrigeration sheet is tightly close to the cooling fan, the refrigeration surface of the semiconductor refrigeration sheet is wrapped with a heat insulation layer housing, a temperature sensor and an accommodation container are placed in a heat insulation layer canvity body, an air inlet, an air outlet and a power air pump outlet are all connected to a hose, a flow display controller is connected to a power air pump through a signal line, and the power air pump is connected to the power supply. According to the sampling device, the power air pump is utilized to adjust inhalational water vapor flow containing tritium in the environment, and the semiconductor refrigeration sheet is utilized to fast condense the water vapor flow containing tritium and collect the condensed water vapor flow containing tritium into a container to form tritiated water. The sampling device can be applicable to fast sampling of the water vapor flow containing tritium near a respiratory zone of working staffs in a tritium related place, has the advantages of being small in size and strong in practicability, and can provide support for tritium radiation protection for tritium related working staffs.

Description

technical field [0001] The invention belongs to the technical field of radiation protection and environmental protection, and in particular relates to a portable sampling device for air tritiated water. Background technique [0002] As one of the important raw materials in the field of nuclear industry and precision weapon production, tritium has the characteristics of beta radioactivity and low toxicity. Among them, the toxicity of tritiated water is more than 10,000 times that of tritium gas. Since tritium is the nuclide with the smallest molecular weight, there is currently no suitable material that can completely protect it. Therefore, the intake of tritiated water by tritium-related workers mainly depends on the tritium content in urine monitored by radiation protection. However, since tritium enters the human body through the respiratory system and is excreted through the urine through the complex metabolic process of the human body, it is impossible to intuitively a...

AI Technical Summary

Problems solved by technology

However, since tritium enters the human body through the respiratory system and is excreted through the urine through the complex metabolic process of the human body, it is impossible to intuitively and quickly understand the absorbed dose of tritiated water by tritium-related personnel

The fixed-point sampling device for tritiated water in ambient air is too large to be carried and cannot reflect the dose of tritiated water that personnel may inhale

Absorb environmental tritiated water through silica gel, although it is convenient to carry, but the silica gel absorbs water too slowly and the adsorption capacity is low, it takes a long time (24 hours) to sample, and after sampling, the tritiated water adsorbed on the silica gel needs to be distilled, which is not suitable for Nature of Short-Time Work in Tritium-Involved Locations

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