Oceanic Diffusion Coefficient around Wolsong Nuclear Power Plant Site

In Korea, total 20 units of nuclear power plants have been operated at 4 sites - Kori, Ulchin, Wolsong and Yonggwang. At present, 10 units of new nuclear power plants have been under construction or planed at Kori, Wolsong and Ulchin sites. In the near future, more than 20 units of nuclear power plants will be intensively operated at the east coast of Korea. Recently, to more accurately assess the radiological impact of radioactive effluents in relation to the new nuclear power plant siting, the license renewal, and the normal operation, three-dimensional models have been developed and used for aquatic dispersion based on the Notice No. 2008-9 'Guideline for investigating and assessing hydrological and aquatic characteristics of nuclear facility site' of the Ministry of Education, Science and Technology (MEST) in Korea. In this study, the oceanic diffusion coefficients used in these models were estimated by using drifters/buoys with GPS around Wolsong nuclear power plant site in 2005 and 2008