Improvement of internal dose measurement program using a whole body counter at nuclear power plants

A whole body counter (WBC) is used in nuclear power plants (NPPs) to identify and measure the radioactivity in the bodies of human beings. In this study, several experiments were conducted to improve the internal dose measurement procedures using a WBC in NPPs. First, back and forth countings using a WBC were carried out to set up the discrimination program between internal and external radioactive contamination in NPPs. Second, experiments on selecting an optimal geometry of the WBC and locating the contaminated area of radionuclides were performed. (author)