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Kamei, Gento; Honda, Akira; Mihara, Morihiro; Oda, Chie; Murakami, Hiroshi; Masuda, Kenta; Yamaguchi, Kohei; Nakanishi, Hiroshi*; Sasaki, Ryoichi*; Ichige, Satoru*; et al.
JAEA-Research 2007-067, 130 Pages, 2007/09
JAEA-Research-2007-067.pdf:28.78MB
After the publication of the 2nd progress report of geological disposal of TRU waste in Japan, policy and general scheme of future study for the waste disposal in Japan was published by ANRE and JAEA. This annual report summarized aim and progress of individual problem, which was assigned into JAEA in the published policy and general scheme. The problems are as follows; characteristics of TRU waste and its geologic disposal, treatment and waste production, quality control and inspection methodology for waste, mechanical analysis of near-field, data acquisition and preparation on radionuclides migration, cementitious material transition, bentonite and rock alteration in alkaline solution, nitrate effect, performance assessment of the disposal system and decomposition of nitrate as an alternative technology.
Ono, Koji*; Sato, Kaoru; Takahashi, Fumiaki; Hasegawa, Takayuki*; Katsunuma, Yasushi*; Kamei, Osamu*; Yoshitake, Takayasu*; Ban, Nobuhiko*; Endo, Akira; Lee, C.*; et al.
no journal, ,
We developed a web-based CT dosimetry system, WAZA-ARI, which calculates doses to average-sized Japanese adults (male and female) as well as a four-year-old girl. The system is being upgraded to a new version, WAZA-ARI 2, incorporating several new features. To enable the dose calculation for a wider range of subjects, WAZA-ARI 2 utilizes voxelized hybrid phantoms developed by Florida University (0, 1, 5, 10 and 15 years old, both sexes) in addition to the JAEA voxel phantoms of the average-sized Japanese male and female. It is also capable of calculating doses to adults with small, large and extra-large body sizes. The system computes tissue doses on user's request referring to the dose coefficient datasets that have been calculated using the Particle and Heavy Ion Transport code System (PHITS). As the phantoms used represent physiques of Asian population, WAZA-ARI 2 is appropriate to calculate patient doses in Asian countries.