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Frankemölle JPKW, Camps J, De Meutter P, Antoine P, Delcloo AW, Vermeersch F, Meyers J. Near-range atmospheric dispersion of an anomalous selenium-75 emission. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 2022; 255:107012. [PMID: 36126488 DOI: 10.1016/j.jenvrad.2022.107012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 08/30/2022] [Accepted: 09/03/2022] [Indexed: 06/15/2023]
Abstract
On May 15th of 2019, an anomalous emission of selenium-75 was detected at the stack of the Belgian Reactor 2 (BR2) in Mol. Although the release exceeded the prescribed limits for BR2, there was no harm to the population or food chain and so the event was classified as INES 1. However, it was very interesting from the perspective of near-range atmospheric dispersion. This publication brings together all available information at the near range - stack-monitored source term data, on-site meteorological data, ambient dose equivalent rates, deposition and concentration measurements - in one dataset that covers the initial puff release on May 15th, 2019 as well as a residual release through early November 2019. To demonstrate the consistency of this dataset, supporting atmospheric transport and dispersion calculations are performed using a Gaussian plume model. These calculations, in turn, are supported by near-range Flexpart calculations in the context of the residual release.
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Affiliation(s)
- J P K W Frankemölle
- SCK CEN, Belgian Nuclear Research Centre, Boeretang 200, BE-2400, Mol, Belgium; KU Leuven, Dept. Mechanical Engineering, Celestijnenlaan 300, BE-3000, Leuven, Belgium.
| | - J Camps
- SCK CEN, Belgian Nuclear Research Centre, Boeretang 200, BE-2400, Mol, Belgium
| | - P De Meutter
- SCK CEN, Belgian Nuclear Research Centre, Boeretang 200, BE-2400, Mol, Belgium; RMI, Royal Meteorological Institute of Belgium, Ringlaan 3, BE-1180, Brussels, Belgium
| | - P Antoine
- SCK CEN, Belgian Nuclear Research Centre, Boeretang 200, BE-2400, Mol, Belgium
| | - A W Delcloo
- RMI, Royal Meteorological Institute of Belgium, Ringlaan 3, BE-1180, Brussels, Belgium
| | - F Vermeersch
- SCK CEN, Belgian Nuclear Research Centre, Boeretang 200, BE-2400, Mol, Belgium
| | - J Meyers
- KU Leuven, Dept. Mechanical Engineering, Celestijnenlaan 300, BE-3000, Leuven, Belgium
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