R&Ds on remote radiation measurement technology in JAEA towards the decommissioning of FDNPP

Sato, Yuki  ; Kaburagi, Masaaki   ; Terasaka, Yuta   ; Saegusa, Jun; Kawabata, Kuniaki   ; Wakaida, Ikuo  ; Torii, Tatsuo  

The development of radiation measurement methods in the high dose-rate environment is requested to accelerate implementation of decommissioning of the Fukushima Dai-ichi Nuclear Power Plant (FDNPP). We are now developing the technology which can measure the distribution of the contamination level with radioactive substances inside the building of FDNPP. Light-weight portable gamma camera is to be developed, and is used for drones that can remotely measure the radiation distributions in the high radioactive fields where workers are not allowed to enter and remain there.