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      Impact of Strontium and Krypton Release from Ghana’s MNSR following a Conjectural Accident Scenario

      1 , 2 , 1 , 2 , 1 , 3 , 1 , 3
      Science and Technology of Nuclear Installations
      Hindawi Limited

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          Abstract

          Accidental release of gaseous or liquid effluents is a critical issue and of a greater concern to the nuclear industry when it comes to the protection of the public and the environment. The emphasis becomes paramount when the release involves particulate of radiation particles. This paper provides a comprehensive insight report on an account of a research investigation carried out in addressing a radiological safety issue of Ghana’s Miniature Neutron Source Reactor (MNSR) during its core conversion project. The amounts of Strontium-90 (Sr-90) and Krypton-85 (Kr-85) effluents presumably released from the reactor hall to the surroundings and the consequential emission radiation to the working area within a 200 m radius were analyzed for a six-month working period. The objective was to estimate specifically the approximate total effective dose equivalent (TEDE) of Sr-90 and Kr-85 by considering a conjectural accident scenario using a well-recognized and user-friendly known atmospheric dispersion model before the preparatory period. The maximum TEDE value recorded at a ground deposition value of 4.6E − 01 kBq/m 2 was approximately 1.80 E − 02 mSv and 4.90 E − 4 mSv for Sr-90 and Kr-85, respectively, at a maximum distance of 0.1 km from the source. The estimated dose values recorded were found to be within the recommended regulatory safety limits of 50 mSv for onsite workers and 1 mSv for the general public. No adverse effect was experienced with respect to human health and the environment.

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              The spread of smoke and gases from chimneys

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                Author and article information

                Journal
                Science and Technology of Nuclear Installations
                Science and Technology of Nuclear Installations
                Hindawi Limited
                1687-6075
                1687-6083
                December 01 2019
                December 01 2019
                : 2019
                : 1-9
                Affiliations
                [1 ]University of Ghana, School of Nuclear and Allied Sciences, P. O. Box AE1, Atomic Energy, Accra, Ghana
                [2 ]Nuclear Regulatory Authority, P. O. Box AE50, Atomic Energy, Accra, Ghana
                [3 ]Ghana Atomic Energy Commission, P. O. Box LG80, Legon, Accra, Ghana
                Article
                10.1155/2019/3026046
                27c56c24-bf49-4f91-814a-05884a39886a
                © 2019

                http://creativecommons.org/licenses/by/4.0/

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