Effective dose of miners due to natural radioactivity in a manganese mine in Hungary.
In this study, short-term radon (RnDP) and thoron (TnDP) progeny measurements and dose estimation were carried out in winter and summer in a manganese mine, Hungary. Gamma-ray dose rate originating from external sources and (222)Rn and (226)Ra contents of spring-water from a mine was also measured. During working hours RnDP and TnDP concentration values changed between 12.1-175 and 0.14-0.42 Bq m(-3), respectively. The (222)Rn and (226)Ra concentration values in the karst spring-water were ∼6 Bq dm(-3) and 16 mBq dm(-3), respectively. The radiation dose resulting from the consumption of karst spring-water was negligible. The doses from the inhalation of TnDP and external gamma radiation were of the same magnitude, ∼0.1 mSv y(-1), which was rather negligible related to the estimated radiation dose of 5 mSv y(-1) from RnDP.
Kávási
N
N
Research Center for Radiation Protection, National Institute of Radiological Sciences, Inage-ku, Chiba-shi, Japan. norbert@fml.nirs.go.jp
Vigh
T
T
Sorimachi
A
A
Ishikawa
T
T
Tokonami
S
S
Hosoda
M
M
D000396:Air Pollutants, Radioactive; D016902:Air Pollution, Indoor / Q000032:analysis*; D004781:Environmental Exposure; D005740:Gases; D006801:Humans; D008345:Manganese / Q000032:analysis*; D008906:Mining; D016273:Occupational Exposure; D011834:Radiation Monitoring / Q000295:instrumentation*; D011868:Radioisotopes / Q000032:analysis*; D011874:Radiometry; D011886:Radon / Q000032:analysis*; D017687:Radon Daughters / Q000032:analysis*; D012306:Risk; D012621:Seasons; D014875:Water Pollutants, Radioactive / Q000032:analysis
D000396:Air Pollutants, Radioactive; D005740:Gases; D011868:Radioisotopes; D017687:Radon Daughters; D014875:Water Pollutants, Radioactive; D008345:Manganese; D011886:Radon