Environmental radiation monitoring around the nuclear facilities

Environmental Radiation Monitoring was carried out with measurement of environment. Raadiation and environmental radioactivity analysis on the sites of KAERI nuclear facilities and Seoul Research Reactors and their environments. The average level of environmental radiation dose measured by an ERM and the accumulated radiation dose by a TLD were almost same level compared with the previous years. The activity of gross α and gross β, Tritium, Uranium and Strontium in environmental samples showed a environmental level. The radioactivities of most γ-radionuclides in air particulate, fall out, rain water and ground water were less than MDA except 40K or 7Be which are natural radionuclides. However, not only 40K or 7Be but also 137Cs were detected at the background level in surface soil, discharge sediment and surface water