Decontamination work in the Reactor Fuel Examination Facility

Ida, Yuma; Obata, Hiroki; Kimura, Yasuhiko; Onozawa, Atsushi 

Reactor Fuel Examination Facility (RFEF) is one of the largest hot laboratories in Japan. This lab is dedicated to perform the post irradiation examinations of spent fuel and has 8 concrete cells and 5 lead cells. There are many kinds of the contaminated equipment in the hot cells, therefore, it is very important to prevent the exposure of the workers who maintain and inspect those equipment. In this presentation, explaining about typical decontamination work in RFEF which is included air dose rate reduction trend, required period and required worker, etc to share the way of hot cell maintenance and to discuss how efficient cell maintenance.