5:15 PM - 6:30 PM
*Shigeo Okuma1, Tadashi Nakatsuka1, Shun Nakano1, Hideyuki Satoh2, Ayako Okubo3 (1.Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST), 2.The Secretariat of the Nuclear Regulation Authority, 3.Hydro-soft Technology Institute Co., Ltd.)