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J Radiat Prot > Volume 28(3); 2003 > Article
Journal of Radiation Protection 2003;28(3):239-0.
Estimation of Tritium Concentration in Groundwater around the Nuclear Power Plants Using a Dynamic Compartment Model
Choi, Heui-Joo;Lee, Han-Soo;Kang, Hee-Suk;Choi, Yong-Ho;
Every nuclear power plant measured concentrations of tritium in groundwater and surface water around the plants periodically. It was not easy to predict the tritium concentration only with these measurement data in case of various release scenarios. KAERI developed a new approach to find the relationship between the tritium release rate and tritium concentration in the environment. The approach was based upon a dynamic compartment model. In this paper the dynamic compartment model was modified to predict the tritium behavior more accurately. The mechanisms considered for the transfer of tritium between the compartments were evaporation, groundwater flow, infiltration, runoff, and hydrodynamic dispersion. Time dependent source terms of the compartment model were introduced to refine the release scenarios. Also, transfer coefficients between the compartments were obtained using realistic geographical data. In order to illustrate the model various release scenarios were developed, and the change of tritium concentration in groundwater and surface water around the nuclear power plants was estimated.
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