Reduction of chlorine concentrations by using a greenbelt |
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| Institution: | 1. Institut de Radioprotection et de Sûrété Nucléaire (IRSN), France;2. CEREGE, France;1. Institut de Radioprotection et de Sûreté Nucléaire, PSE-ENV/SRTE/LRC, BP 10 Rue Max-Pol Fouchet, 50130 Cherbourg Octeville, France;2. Université Paris-Est (UPE), Centre d’Etudes et de Recherches en Thermique Environnement et Systèmes (CERTES), EA 3481, Université Paris-Est Créteil Val de Marne (UPEC), Créteil, France;3. Institut de Radioprotection et de Sûreté Nucléaire, PSE-ENV, Le Vésinet, France;4. Institut National de Recherche en Agronomie, Unité Interaction Sol Plante Atmosphère, Villenave d’Ornon, France;5. Institut National de Recherche en Agronomie, Unité Fourrages Environnement Ruminants Lusignan, France;1. Department of Nuclear Engineering and Management, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, Japan;2. AMS Group, Tandem Accelerator Complex, Research Facility Center for Science and Technology, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan;1. National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan;2. Hyogo Prefectural Institute of Environmental Sciences, 3-1-27 Yukihira-cho, Suma-ku, Kobe, Hyogo 654-0037, Japan;3. Meteorological Research Institute, Japan Meteorological Agency, 1-1 Nagamine, Tsukuba, Ibaraki 305-0052, Japan;4. RIKEN Advanced Institute for Computational Science, 7-1-26 Minatojima-minamimachi, Chuo-ku, Kobe, Hyogo 650-0047, Japan;1. Laboratory of Environmental Analytical Chemistry – LQA2, University of the Balearic Islands, Cra. Valldemossa km 7.5, 07122 Palma de Mallorca, Spain;2. Sciware Systems, S.L., Spin-off of the University of the Balearic Islands, C/Pi 37, 07193 Bunyola, Spain |
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| Abstract: | This paper presents the experimental results of using a greenbelt to mitigate accidental releases of chlorine from a small storage installation. During the field tests carried out with the shrub Thuya orientalis, Linnaeus (oriental thuya), the ability of such a barrier of vegetation to mitigate accidental releases by reducing the chlorine downstream concentrations was investigated. Visible injuries to the shrubs exposed to chlorine have been noticed, since the damaged areas exhibited typical symptoms with needles necrosis and a burnt orange-brown color. Early defoliation was observed in the vegetation areas directly exposed to the gas plume. It was shown that in the presence of the greenbelt, the chlorine concentrations were lessened by a factor of 4 at a distance of 5 m downstream from the source. This dilution ability vanished swiftly with the distance downstream from the greenbelt. |
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