Examination of concrete samples from the TMI-2 reactor building basement

摘要

Core samples were obtained from the concrete walls of the TMI-2 reactor building basement which had been submerged for up to three years in reactor coolant which leaked from the damaged reactor. The concrete samples were obtained in 1985 and 1986 using a Rover robot equipped with a drilling attachment. Three samples were sent to the Idaho National Engineering Laboratory (INEL) for examination to determine the leachability and total retention of fission products in the concrete. These data are to be used in the evaluation of methods for decontaminating the reactor building basement. It was determined that for some radionuclides (e.g., /sup 90/Sr) up to 90% of the total activity can be removed by leaching. 11 refs., 10 figs., 3 tabs.