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Study On The Effects Of Marine Obstructions On The Movement Of Radionuclides

Posted on:2020-08-17Degree:MasterType:Thesis
Country:ChinaCandidate:Ebtihal MohammedFull Text:PDF
GTID:2370330578968585Subject:Nuclear Science and Technology
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Radionuclides are widely used in energy production and medical,military and industrial applications.Thus,understanding the behavior of radionuclides which have been or may be released into ecosystems is important for human and environmental risk assessment.Modelling of radionuclides or their stable element analogues is a vital tool that can predict the consequences of accidental release.Radionuclides have been released to the environment from a multiplicity of sources,both planned and accidental.Given that more than 70%of the surface of the Earth is ocean,it is not surprising that much of these releases now reside there.Study paper built on data analysis in the Red Sea showed the relation with radionuclides concentration and the depth or organic matters.The calculated results of radionuclide concentration C are obtained when the ocean depth Yo is 0 m?5000m and the radioactivity emission rate Q is 11470Bq/s?50500Bq/s,which gives ranged values for 137Cs=(0.4396 to 28.2026)Bq/m3,210Po=(0.4321 to 27.7222)Bq/m3,232Th=(0.4397 to 28.2088)Bq/m3.Using self-programming MNAP explain the diagram relations between concentrations(C),discharge rate(Q)and distance between discharge point and shoreline(Y0).The data input for the self-program MNAP is compared to Mediterranean Sea due to lack of data in the Red Sea,the results explain the factors affecting radionuclides distribution in aquatic system with complex variety of physical,geochemical and biological processes,which influence the behavior,transport and fate of radionuclides released into the water or sediment.In establishing radiation guidelines with respect to pollution from nuclear power plants,it is often the case that a small number of certain radionuclides turn out to be of special importance.These radionuclides are ones that lend to be incorporated into living organisms,either because they are isotopes of essential elements or behave chemically very much like essential elements need to determine the levels of some heavy metals;natural and artificial radionuclides in sediments along the Sudanese coast of the Red Sea.
Keywords/Search Tags:Radionuclides, Dispersion, Red Sea, Concentration
PDF Full Text Request
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