Radioactive Background in Hydrosphere Prior to Planned Extension of Nuclear Power Plant

Eduard Hanslík ； Diana Maresová ； Eva Juranová

《International Journal of Nuclear Energy Science and Engineering》 3卷3期 (2013/09) Pp. 47-55

並列摘要

Artificial radionuclides occurred in samples of surface water and other components of the hydrosphere in the last century. Their main sources were atmospheric tests of nuclear weapons and in Europe, the accident at the Chernobyl nuclear reactor. These radionuclides include mainly tritium, strontium 90 and caesium 137 in present. In the area of concern, a power plant with two 1000 MW blocks has been in operation since 2001. At present, its extension is discussed. Regarding the assessment on the impacts of nuclear facilities which represent point sources of artificial radionuclides, it is necessary to take into account their impact on the hydrosphere. The paper describes the development of artificial radionuclides activity concentrations in the recipient of the nuclear power plant waste water and its tributaries, uninfluenced by the power plant. The activity concentrations of caesium 137 and strontium 90 are permanently decreasing during the monitored period 1990-2012. Activity concentrations of tritium, detected in river sites not affected by Temelín nuclear plant, are slowly decreasing and their values are substantially lower than those on the sites affected by the plant. The nuclear power plant operation caused an increase of tritium activity concentrations downstream from the plant. Radionuclides amounts released after the power plant's extension are estimated.

並列關鍵字

Radioactivity ； Tritium ； Strontium ； Caesium ； Background ； Surface Water ； Nuclear Power Plant