Environmental radiation monitoring around nuclear power plant using thermoluminescence dosimetry

A field study was undertaken at the Bushehr Nuclear Power Plant, BNPP, and surrounding areas from August 1996 to August l997 as a part of a pre-operational program to establish the natural background radiation level for this region. The purpose of this project was to study environmental background radiation which was accomplished by thermoluminescence dosimetry. 18 TLD stations were set up and distributed around the nuclear power plant up to distance s of 30 km radius. The selected dosimeters consisted of two Calcium Sulfate (Titanium doped), CaSO4:Tm, disks. Dosimeters were calibrated and utilized according to the ANSI N545 -1975 standard procedure. The measured exposure rates of the background radiation level from all the stations were in the range of (0.03 - 0.12 μSv/h) with the mean value of 0.075 μSv/h. (Author)