6 results about "Tritiated water" patented technology

The invention relates to a method for testing the tritium release rate of a tritium-containing waste package, and the method comprises the steps: guiding tritium-containing waste gas released by the tritium-containing waste package in an exhaust hood to be continuously input into an ionization chamber online monitoring system, and determining the initial tritium activity concentration; when the first threshold value is lower than the first threshold value, the tritium-containing waste gas flows into an initial bubbling sampler after passing through a refrigerating system to collect tritiated water, and target gas is obtained; enabling the target gas to circularly pass through the operation of the initial bubbling sampler, and replacing a new bubbling sampler every time a first preset time is reached; after a second preset time is reached, stopping the cyclic operation, and testing the target tritium activity concentration of liquid in the bubbling sampler which is replaced for multiple times and the current bubbling sampler by adopting a liquid scintillation counter; and calculating the tritium release rate based on the target tritium activity concentration. Target gas is discharged into the exhaust hood again, tritiated water absorption is carried out on tritium-containing waste gas multiple times, and the technical effects that tritiated water absorption is more complete due to multiple times of cyclic absorption, and the tritium release rate detection result is more accurate are achieved.

The present application relates to a kind of measurement device of tritium adsorption coefficient, including experimental cavity, with the adsorption cavity and absorption device being connected with experimental cavity, and with the exhaust cavity being connected with adsorption cavity, with tritium-containing solution temporary storage tank being connected with absorption device, monitoring instrument is arranged between the experimental cavity, adsorption cavity and exhaust cavity, valve is arranged between each connecting component.The present application indirectly calculates the adsorption coefficient of unit volume, unit surface area experimental cavity in the material to be measured under different temperature, tritium concentration conditions by weighing the weight change of silica gel and other adsorption materials in adsorption cavity.It has practical significance for studying the adsorption coefficient of material itself, the anti-tritium penetration effect of surface coating material.The experimental device can be widely used to measure the adsorption coefficient of tritiated water, organic tritium in material.

The invention discloses an air tritiated water sampling method and system for all climate, and relates to the field of air tritiated water sampling, and the method comprises the following steps: obtaining four environmental parameters of the temperature, the relative humidity, the atmospheric pressure and the air velocity of a sampling point in real time; inputting the environment parameters obtained in real time into a preset dynamic parameter generator, and outputting a group of optimal key sampling parameter combinations; dynamically adjusting a sampling pump and a temperature adjusting device according to the optimal key sampling parameter combination so as to execute sampling operation; the effective adsorption capacity of the adsorbent is continuously monitored in the whole sampling period, and early warning information of adsorbent replacement is provided for a user. According to the invention, the problems of condensation and icing, premature saturation or desorption of an adsorbent and the like in all weather can be effectively avoided, and the sampling efficiency and accuracy are remarkably improved; meanwhile, continuous and stable sampling is guaranteed through adsorbent residual capacity monitoring and failure early warning, and high-precision and intelligent air tritiated water sampling under any weather condition is achieved.

The invention belongs to the technical field of nuclear reactor waste gas treatment and radionuclide recovery, and particularly relates to a magnesium-nickel alloy for low-temperature efficient recovery of deuterized water and tritiated water in reactor waste gas and a preparation method and application of the magnesium-nickel alloy. The magnesium-nickel alloy is magnesium-nickel alloy particles, and the preparation method comprises the steps that after magnesium metal and magnesium-nickel intermediate alloy are mixed according to the design proportion, high-temperature melting is conducted, the liquid alloy is stirred till components are uniform, then pouring and natural cooling are conducted, and a magnesium-nickel alloy ingot is obtained; and then the magnesium-nickel alloy ingot is processed into magnesium-nickel alloy particles, and finally the magnesium-nickel alloy particles meeting the requirements are screened. In the magnesium-nickel alloy, the nickel element forms a micro-couple with a magnesium matrix to accelerate electrochemical corrosion and destroy the integrity mechanism of a magnesium surface oxidation film, the reaction activity of the magnesium-nickel alloy with deuterized water and tritiated water vapor is jointly improved, and deuterium and tritium isotopes in waste gas are efficiently and selectively adsorbed and fixed.

The application discloses a kind of air tritiated water sampling method and system for all-weather, it is related to air tritiated water sampling field, the method comprises: four kinds of environmental parameters of temperature, relative humidity, atmospheric pressure and air flow rate of sampling point are acquired in real time;The environmental parameters acquired in real time are input to the preset dynamic parameter generator, and output a set of optimized key sampling parameter combination;According to the optimized key sampling parameter combination, dynamically adjust sampling pump, temperature adjusting device to execute sampling operation;In the whole sampling cycle, the effective adsorption capacity of adsorbent is continuously monitored, and the early warning information of adsorbent replacement is provided to the user.The problems such as condensation icing, adsorbent premature saturation or resolution under all-weather can be effectively avoided by the application, and the sampling efficiency and accuracy are significantly improved;At the same time, through adsorbent residual capacity monitoring and failure warning, the sampling is continuously stable, and high-precision, intelligent air tritiated water sampling under any weather condition is realized.

The invention provides a system and a method for removing radioactive tritium from inert gas. The system comprises: a filter unit for removing organic components and inorganic particles in the inert gas; the gas buffer tank is used for mixing oxygen and inert gas from the filtering unit; the oxygen supply unit is used for supplying oxygen into the gas buffer tank; the catalytic oxidation unit is used for converting element-state tritium contained in the inert gas into tritiated water; the catalytic washing unit is used for transferring radioactive tritium contained in the inert gas from the catalytic oxidation unit into liquid-phase water; the natural water supply unit is used for supplying natural water into the catalytic washing unit; and the condensing unit is used for condensing the tritium-removed inert gas flowing out of the catalytic washing unit. According to the system and the method, the residual quantity of tritium in the inert gas can be effectively reduced, so that the inert gas reaches the safe emission standard.