Evaluation and Consideration on Environmental Radiation Analysis of Yeong-Gwang Nuclear Power Plant Site Inside&Outside(2000~2009 year)

영광원전 부지 내.외부의 환경방사능 분석에 대한 평가 및 고찰(2000~2009년)

  • Han, Sang-Jun (Chosun University) ;
  • Lee, Seung-Jin (Yeong-Gwang N.P.P Supervisory Center for Environment Radiation & Safety) ;
  • Lee, Goung-Jin (Chosun University) ;
  • Lee, Na-Young (Yeong-Gwang N.P.P Supervisory Center for Environment Radiation & Safety) ;
  • Kim, Hee-Gang (Yeong-Gwang N.P.P Supervisory Center for Environment Radiation & Safety) ;
  • Mun, Ji-Yeon (Yeong-Gwang N.P.P Supervisory Center for Environment Radiation & Safety)
  • Received : 2011.02.28
  • Accepted : 2011.06.17
  • Published : 2011.06.30

Abstract

Yeong-Gwang N.P.P Private Environment Supervisory Organization analyzed over 3,000 samples including 10 marine and 24 land samples from the year 2,000 to 2009. According to the results of the analysis, artificial nuclides that resulted from the effect of Yeong-Gwang Nuclear Power Plant operations were not detected in most samples. However, from the rain and seawater samples, which were taken from inside the plants such as the intake, the discharge and the observatory, $^3H$ was detected although it was below the regulation level. The $^3H$ concentration detected in the rain taken from the observatory, by the yearly average criterion, was 30.5~40.0 $Bq{\cdot}L^{-1}$, which is around 20 times the $^3H$ concentration detected in the surroundings of the power plants, but it is 0.1% of the regulation level of 40,000 $Bq{\cdot}L^{-1}$. Also, $^3H$ concentration detected in the seawater taken from the intake and the discharge, by the yearly average criterion, was 2.75~17.8$Bq{\cdot}L^{-1}$, which means the concentration detected in the discharge is about 140~280% higher than that detected in the intake except the year 2006. Based on these results, it was determined that, although lower than the regulation level, the $^3H$ in gas and liquid form detected in the rain and seawater sampled from the observatory and the discharge was released into the environment from the power plants. Therefore, regular monitoring and analysis is required on the level of $^3H$ in the observatory and the discharge.

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