Environmental radiation monitoring around the nuclear facilities

A portable count-rate meter (Eberline, Model PRS-1, mica end-window type G-M detector, -2.0 mg/cm2) and thermoluminescent detectors (CaSO4; Dy) for the environmental Radiation Monitoring have been used to obtain total gamma dose rates at 23 locations within a 30km radius of the Kori Nuclear Power plant and it's surroundings area. Also environmental Radiation monitors (Reuter Stokes, RSS-111, Spherical high pressurized ionization chamber) have been employed for continuous monitoring of environmental radiation at four locations, which are Eonyang, Onsan, Ulsan, and Busan. The measurement of gross alpha and beta radioactivities of the surface soil and of the pine needles also have been made. (Author)