Development of exposure reduction technologies by digitalization of environment and radioactive source distribution; Current status of development project

Suzuki, Masahiro ; Yamaguchi, Takashi ; Machida, Masahiko  ; Kawabata, Kuniaki   ; Ito, Rintaro

In the decommissioning of the Fukushima Daiichi NPS (1F), prior to the full-scale implementation of fuel debris removal operations, it is necessary to improve the on-site environment in order to safely and efficiently construct access routes in the reactor building (R/B). Then, JAEA is now developing a prototype system that estimates radioactive source distributions by using on-site dose rate data and examines countermeasure effects of such as decontamination, shielding with estimated contamination (radiation sources) on the estimated sources in cyberspace. This report presents overview of the development project and its current status.