Tritium dynamics in soils and plants grown under three irrigation regimes at a tritium processing facility in Canada

Journal of Environmental Radioactivity
S MihokI Clark

Abstract

The dynamics of tritium released from nuclear facilities as tritiated water (HTO) have been studied extensively with results incorporated into regulatory assessment models. These models typically estimate organically bound tritium (OBT) for calculating public dose as OBT itself is rarely measured. Higher than expected OBT/HTO ratios in plants and soils are an emerging issue that is not well understood. To support the improvement of models, an experimental garden was set up in 2012 at a tritium processing facility in Pembroke, Ontario to characterize the circumstances under which high OBT/HTO ratios may arise. Soils and plants were sampled weekly to coincide with detailed air and stack monitoring. The design included a plot of native grass/soil, contrasted with sod and vegetables grown in barrels with commercial topsoil under natural rain and either low or high tritium irrigation water. Air monitoring indicated that the plume was present infrequently at concentrations of up to about 100 Bq/m(3) (the garden was not in a major wind sector). Mean air concentrations during the day on workdays (HTO 10.3 Bq/m(3), HT 5.8 Bq/m(3)) were higher than at other times (0.7-2.6 Bq/m(3)). Mean Tissue Free Water Tritium (TFWT) in plants and soil...Continue Reading

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Dec 3, 2014·Journal of Environmental Radioactivity·Frédérique Eyrolle-BoyerElisabeth Leclerc

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Citations

Dec 6, 2016·Journal of Environmental Radioactivity·A Melintescu, D Galeriu
Jun 11, 2019·Environmental Science. Processes & Impacts·Martine C DuffOmar E Rivera
Nov 3, 2020·Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine·S B KimM Stuart
Aug 10, 2020·Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine·Feng GuoHuiFang Shen
Feb 6, 2017·Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine·James MoranWilcox Freeburg

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