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    Stralingsniveaumetingen aan het terrein van de EPZ kerncentrale Borssele in 2019

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    Authors
    Tanzi, CP
    Series/Report no.
    RIVM rapport 2020-0138
    Type
    Report
    Language
    nl
    
    Metadata
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    Title
    Stralingsniveaumetingen aan het terrein van de EPZ kerncentrale Borssele in 2019
    Translated Title
    Radiation level measurements around the site of Borssele nuclear power plant in 2019
    Publiekssamenvatting
    Het gammastralingsniveau aan de terreingrens van kerncentrale Borssele lag in 2019 onder het toegestane maximum van 10 microsievert per jaar. De hoogste vastgestelde dosis is 1,5 microsievert. Dit blijkt uit controlemetingen van het RIVM. Het RIVM rapporteert jaarlijks in opdracht van de Autoriteit Nucleaire Veiligheid en Stralingsbescherming (ANVS) of de kerncentrale aan de vergunningseis voldoet. De kerncentrale moet ervoor zorgen dat de blootstelling van personen buiten de terreingrens maximaal 10 microsievert per jaar is. Dat is in de revisie van de kernenergiewetvergunning van 2016 vastgelegd. Om de maximale effectieve dosis te berekenen wordt op de terreingrens het gammastralingsniveau gemeten. Dit gebeurt met het door het RIVM beheerde MONET-meetnet. Van de meting wordt vervolgens de natuurlijke achtergrondwaarde afgetrokken. De resulterende meetwaarde wordt gecorrigeerd met de zogeheten Actuele Blootstelling Correctiefactor (ABC-factor). Een ABC-factor hangt samen met de bestemming van het gebied waar de effectieve stralingsdosis kan worden opgelopen. Rond het terrein van kerncentrale Borssele is de bestemming uitsluitend industriële doeleinden en daarvoor geldt een ABC-factor van 0,2. Na de toepassing van deze ABCfactor is de berekende maximale effectieve dosis 1,5 microsievert per jaar. In 2019 is met acht monitoren op de terreingrens het gammastralingsniveau continu gemeten. In dit rapport zijn de daggemiddelden van de metingen van de MONET-monitoren rond de kerncentrale in 2019 weergegeven. Ook wordt uitgelegd hoe voor elk meetpunt de natuurlijke achtergrondwaarde is bepaald.
    In 2019, the radiation level caused by gamma radiation at the site boundary of the Borssele nuclear power plant was below the maximum permitted level of 10 microsievert per year. The maximum effective dose was 1.5 microsievert. This is the result of measurements carried out by the RIVM on location. RIVM is tasked by the Authority for Nuclear Safety and Radiation Protection (ANVS) to report annually on whether the Borssele nuclear power plant meets the criterion stipulated in the license. The nuclear power plant must ensure that the maximum effective dose received by persons outside the site boundary of Borssele NPP does not exceed 10 microsievert annually. This is stipulated in the operating license, which was granted in 2016 in accordance with Dutch legislation on the use of nuclear energy. In order to determine the maximum effective dose, gamma radiation is measured at the site boundary. The measurements are carried out within the framework of the MONET monitoring network, which falls under the administrative management of RIVM. The measurements are analyzed by subtracting the natural background value. The resulting measurement data are then corrected with the so-called "Actuele Blootstelling Correctiefactor" (or ABC-factor, meaning actual exposure correction factor). An ABC-factor takes into account the specific use of the area where the gamma dose may occur. Around the boundary of the Borssele nuclear power plant the ABC-factor is 0.2. This translates into a maximum effective dose of 1.5 microsievert per year, which is below the maximum permitted yearly dose. In 2019 measurements of the radiation level were carried out continuously at eight locations at the site boundary. This report provides the daily averages of the radiation dose recorded by the MONET monitors around the Borssele nuclear power plant and explains how the background level at each measuring location was determined.
    Publisher
    Rijksinstituut voor Volksgezondheid en Milieu RIVM
    Sponsors
    ANVS
    DOI
    10.21945/RIVM-2020-0138
    URI
    http://hdl.handle.net/10029/624425
    ae974a485f413a2113503eed53cd6c53
    10.21945/RIVM-2020-0138
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