Experience of clean-up activities and feedback to future D&D projects; Japan Power Demonstration Reactor decommissioning project

Yanagihara, Satoshi; Tachibana, Mitsuo; Shimada, Taro; Sukegawa, Takenori; Shiraishi, Kunio

8th International Conference on Radioactive Waste Management and Environmental Remediation (ICEM '01), Vol.2, p.1247 - 1251, 2001/10

https://doi.org/10.1115/ICEM2001-1225

In the Japan Power Demonstration Reactor (JPDR) decommissioning project, the procedure for clean-up activities was specially studied for harmonization with radioactive waste treatment policy in Japan; it consisted of several components such as survey of the facility operational history, radiological characterization of building surfaces, decontamination and final survey of radioactivities. After confirming that there was no significant radioactivity in the facilities in the final step of the procedure, buildings were demolished in consideration of treatment of wastes as non-radioactive materials. The JPDR decommissioning project was completed by March 1996 with no serious problems, which showed that the procedure was rational, and that the experiences are useful for planning of future decommissioning activities. The dismantling and clean-up activities were reviewed, and the experiences are excepted to contribute to establishing standard and regulatory systems on decommissioning nuclear facilities.