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Electronic journal of the International Association
for Environmental Hydrology
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JEH Volume 7 (1999), Paper 7, June 1999
Posted June 16, 1999
ENVIRONMENTAL IMPACT ASSESSMENT OF RADIONUCLIDE TRANSPORT AT THE TRIGA
REACTOR, KOREA
Gye-Nam Kim, Hui-Jun Won, Byung-Jik Lee, Won-Zin Oh, and Jong-Ho
Kim
Decontamination, Decommissioning and Restoration Technology
Department, Korea Atomic Energy Research Institute, Yusong, Taejon, Korea
ABSTRACT
The simulation of radionuclide transport at the TRIGA reactor site
was carried out to analyze the distribution of residual radionuclide concentrations
around the reactor site after reactor decommissioning. The soil within
the study area was sampled and its hydraulic conductivity, porosity, moisture
content, and distribution coefficient were measured in the laboratory.
Simulation results around the reactor site show the following: the section
influenced most critically by the residual radionuclides is within 150
m of the reactor building and a stream in front of the reactor. An average
flow velocity of groundwater around the TRIGA reactor site is 0.6~1.8 m/sec.
The residual radionuclide concentrations are reduced to about 0.3 percent
at a distance of 15 m from the reactor. The stream, located at a distance
of 150~200 m, is only slightly affected by residual radionuclides.
Reference: Kim, Gye-Nam, Hui-Jun Won, Byung-Jik Lee, Won-Zin
Oh, and Jong-Ho Kim ; Environmental Impact Assessment of Radionuclide
Transport at the TRIGA Reactor, Korea , Journal of Environmental Hydrology,
Vol. 7, Paper 7, June 1999.
Gye-Nam Kim
Decontamination, Decommissioning & Restoration Technology Dept.
Korea Atomic Energy Research Institute
PO Box 105
Yusong Taejon
305-600 Korea
E-mail: kimsum@nanum.kaeri.re.kr