Mapping of tritium emissions using absorption vapour samplers |
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Authors: | Gergely Vodila,Mihá ly Molná r,Mihá ly Veres,É va Svingor,Istvá n Futó ,Istvá n Barnabá s,Sá ndor Kapitá ny |
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Affiliation: | 1. Laboratory of Environmental Studies, Institute of Nuclear Research (ATOMKI) of Hungarian Academy of Sciences, H-4001 Debrecen, Hungary;2. Isotoptech Co. Ltd., Debrecen, Hungary;3. Radioactive Waste Treatment and Disposal Facility, H-2166 Püspökszilágy, Hungary |
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Abstract: | Püspökszilágy Radioactive Waste Treatment and Disposal Facility (RWTDF) is a typical near-surface engineered repository designated to store low- and intermediate-level wastes from various institutes, research facilities and hospitals in Hungary. Two automatic combined 14C–tritium sampling units installed at the facility sample the air 2 m above surface. The one installed near the vaults detects tritium (T) activities two orders of magnitude higher than the far reference sampling unit. To localize the T emissions, 19 small absorption vapour samplers filled with silica gel were settled onto the ground surface. After the saturation of the silica gel, the water was recovered and its T concentration was measured with a low-background liquid scintillation counter. The absorption vapour samplers are cheap, simple and easy-to-use. We present the samplers and the T distribution map constructed from the data, which helps to localize the T emission. |
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Keywords: | Tritium Absorption vapour sampler Silica gel Desorption Liquid scintillation counting Npp Hungary |
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