Radionuclide Accumulation at a Hydroelectric Power Dam

There are about 1200 hydroelectric power plants in Sweden and several thousands of other water reservoirs for other purposes. World wide there are about 45 000 large dams in the world, the vast majority of which were constructed after 1950 and in total there are several millions of smaller ponds. These dams produce several benefits including supply of irrigation water, hydropower generation, flood control, recreation, fishing and others. [Pg.1]

The retention of dissolved silicated (DSi) artificial dams in Sweden and Finland has been studied which show a reduction in the delivery to the coastal zone. [Pg.1]

It is well known that anthropogenic radionuclides such as radiocaesium and plutonium together with natural Pb are accumulated in sediments and can be used for the dating/growth rate determination of the sediments. The flux of these radionuclides depends on factors, such as physical and chemical properties, biological factors etc,. Water dams along rivers will stop the water flow and might act as effective traps by sedimentation processes and accumulate material that otherwise would be transported to the sea. [Pg.1]

We have studied the accumulation and vertical distribution of Vb, Cs and 239+240p in sediment cores from a dam (Grand hydroelectric power dam) situated in [Pg.1]

There are in principle two sources for anthropogenic radioactivity in rivers in Sweden, 1954-58 (20%) and 1961-62 (80%), and the Chernobyl accident, 1986. These events are quite distinct in time and by using isotopic ratios and radionuclide ratios the two sources can be distinguished from each other. China and France also conducted nuclear tests during 1960 -1980. [Pg.2]

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