Evaluation of induced activity, decay heat and dose rate distribution after shutdown in ITER Maki, Koichi [Hitachi Ltd., Ibaraki (Japan). Hitachi Research Lab.]; Satoh, Satoshi; Hayashi, Katsumi; Yamada, Koubun; Takatsu, Hideyuki; Iida, Hiromasa 70 PLASMA PHYSICS AND FUSION; ITER TOKAMAK; REACTOR SHUTDOWN; RADIATION DOSE DISTRIBUTIONS; AFTER-HEAT; RADIOACTIVITY; EVALUATION; COMPUTERIZED SIMULATION; RADIATION TRANSPORT; TRANSMUTATION; REACTOR MAINTENANCE Induced activity, decay heat and dose rate distributions after shutdown were estimated for 1MWa/m{sup 2} operation in ITER. The activity in the inboard blanket one day after shutdown is 1.5x10{sup 11}Bq/cm{sup 3}, and the average decay heating rate 0.01w/cm{sup 3}. The dose rate outside the 120cm thick concrete biological shield is two order higher than the design criterion of 5{mu}Sv/h. This indicates that the biological shield thickness should be enhanced by 50cm in concrete, that is, total thickness 170cm for workers to enter the reactor room and to perform maintenance. (author) Japan Atomic Energy Research Inst., Tokyo (Japan) OSTI as DE97758662 Japan 1997-03-01 English Conference Conference: 1996 symposium on nuclear data, Tokai (Japan), 21-22 Nov 1996; Other Information: PBD: Mar 1997; Related Information: Is Part Of Proceedings of the 1996 symposium on nuclear data; Iguchi, Tetsuo [Nagoya Univ. (Japan)]; Fukahori, Tokio [eds.]; PB: 332 p. Medium: X; Size: pp. 188-193 https://doi.org/ ON: DE97758662 [] JAERI-Conf-97-005; CONF-9611184-; INDC(JPN)-179/U Other: ON: DE97758662; TRN: JP9709104 JPN; SCA: 700480; PA: JPN-97:009104; EDB-97:148216; SN: 97001867008 2008-02-05 545183 https://www.osti.gov/etdeweb/servlets/purl/545183