title: Near-field krypton-85 measurements in stable meteorological conditions around the AREVA NC La Hague reprocessing plant: estimation of atmospheric transfer coefficients.
abstract: The aim of this work was to study the near-field dispersion of (85)Kr around the nuclear fuel reprocessing plant at La Hague (AREVA NC La Hague - France) under stable meteorological conditions. Twenty-two (85)Kr night-time experimental campaigns were carried out at distances of up to 4 km from the release source. Although the operational Gaussian models predict for these meteorological conditions a distance to plume touchdown of several kilometers, we almost systematically observed a marked ground signal at distances of 0.5-4 km. The calculated atmospheric transfer coefficients (ATC) show values (1) higher than those observed under neutral conditions, (2) much higher than those proposed by the operational models, and (3) higher than those used in the impact assessments.
authors: IRSN/PRP-ENV/SERIS, Laboratoire de Radioécologie, Rue Max Pol Fouchet, BP10, Cherbourg-Octeville 50130, France. Electronic address: olivier.connan@irsn.fr.
authors: O
authors: O
authors: Connan
authors: IRSN/PRP-ENV/SERIS, Laboratoire de Radioécologie, Rue Max Pol Fouchet, BP10, Cherbourg-Octeville 50130, France.
authors: L
authors: L
authors: Solier
authors: IRSN/PRP-ENV/SERIS, Laboratoire de Radioécologie, Rue Max Pol Fouchet, BP10, Cherbourg-Octeville 50130, France.
authors: D
authors: D
authors: Hébert
authors: IRSN/PRP-ENV/SERIS, Laboratoire de Radioécologie, Rue Max Pol Fouchet, BP10, Cherbourg-Octeville 50130, France.
authors: D
authors: D
authors: Maro
authors: IRSN/PRP-ENV/SERIS, Laboratoire de Radioécologie, Rue Max Pol Fouchet, BP10, Cherbourg-Octeville 50130, France.
authors: M
authors: M
authors: Lamotte
authors: IRSN/PRP-ENV/SERIS, Laboratoire de Radioécologie, Rue Max Pol Fouchet, BP10, Cherbourg-Octeville 50130, France.
authors: C
authors: C
authors: Voiseux
authors: IRSN/PRP-ENV/SERIS, Laboratoire de Radioécologie, Rue Max Pol Fouchet, BP10, Cherbourg-Octeville 50130, France.
authors: P
authors: P
authors: Laguionie
authors: IRSN/PRP-ENV/SERIS, Laboratoire de Radioécologie, Rue Max Pol Fouchet, BP10, Cherbourg-Octeville 50130, France.
authors: O
authors: O
authors: Cazimajou
authors: IRSN/PRP-ENV/SERIS, Laboratoire de Radioécologie, Rue Max Pol Fouchet, BP10, Cherbourg-Octeville 50130, France.
authors: S
authors: S
authors: Le Cavelier
authors: IRSN/PRP-ENV/SERIS, Laboratoire de Radioécologie, Rue Max Pol Fouchet, BP10, Cherbourg-Octeville 50130, France.
authors: C
authors: C
authors: Godinot
authors: IRSN/PRP-ENV/SERIS, Laboratoire de Radioécologie, Rue Max Pol Fouchet, BP10, Cherbourg-Octeville 50130, France.
authors: M
authors: M
authors: Morillon
authors: IRSN/PRP-ENV/SERIS, Laboratoire de Radioécologie, Rue Max Pol Fouchet, BP10, Cherbourg-Octeville 50130, France.
authors: L
authors: L
authors: Thomas
authors: IRSN/PRP-ENV/SERIS, Laboratoire de Radioécologie, Rue Max Pol Fouchet, BP10, Cherbourg-Octeville 50130, France.
authors: S
authors: S
authors: Percot
mesh_terms: D000396:Air Pollutants, Radioactive / Q000032:analysis*; D005602:France; D007727:Krypton Radioisotopes / Q000032:analysis*; D008962:Models, Theoretical; D011834:Radiation Monitoring; D011874:Radiometry; D014887:Weather
chemical_list: D000396:Air Pollutants, Radioactive; D007727:Krypton Radioisotopes
keywords: Atmospheric dispersion; Briggs model; Krypton-85; Stable meteorological condition