Waste management for JAERI fusion reactors

Tobita, K.; Nishio, S.; Konishi, Satoshi; Jitsukawa, S.

doi:10.1016/j.jnucmat.2004.04.139

Cited by 13 publications

(6 citation statements)

References 11 publications

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“…This will be a challenging issue that we should deal with in the future. As suggested by the previous study [16], a dramatic reduction of radioactive waste seems difficult as far as the present materials selection of SlimCS is concerned. Introduction of an advanced blanket with environmentally aware, for example, the combination of liquid breeder and SiC/SiC, in the later phase of DEMO operation will be a possible idea to stress environmental awareness in fusion energy development.…”

Section: Discussionmentioning

confidence: 75%

Torus configuration and materials selection on a fusion DEMO reactor, SlimCS

Tobita

Nishio

Tanigawa

et al. 2009

Journal of Nuclear Materials

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Section: Discussionmentioning

confidence: 75%

Torus configuration and materials selection on a fusion DEMO reactor, SlimCS

Tobita

Nishio

Tanigawa

et al. 2009

Journal of Nuclear Materials

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“…For both plants, reinforced shielding is adopted to clear the beyondshield components from regulatory control as much as possible [15]. In principle, 75% of the radioactive materials from both reactors are qualified for clearance after 50 yr storage.…”

Section: Clearance Of Fusion Materials: Us European and Japanese Stmentioning

confidence: 99%

The feasibility of recycling and clearance of active materials from fusion power plants

Zucchetti

El-Guebaly

Forrest

et al. 2007

Journal of Nuclear Materials

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“…The maintenance scenario and the waste management of fusion DEMO reactor have been proposed [1][2][3]. In the maintenance procedure of the reactor, used in-vessel components are removed from the reactor vessel to be replaced.…”

Section: Introductionmentioning

confidence: 99%

Conceptual Design of Temporally Storage Area in Hot Cell for Fusion DEMO Reactor

Kondo

Someya

Tsuji

et al. 2016

Plasma and Fusion Research

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In the maintenance procedure of fusion DEMO reactor, used in-vessel components are removed from the reactor vessel to be replaced. The temporally storage area for the used blanket segments is necessary. In the present work, the temporally storage area is conceptually designed as the used segments are stored dispersively in the plural compartments in the hot cell for the following dismantling procedure. The space dose rate of the compartment, where more than one segment is installed, was evaluated by means of the gamma ray transport calculation with PHITS Monte Calro analysis code. The space dose rate in the compartment decreases with time. For example, by the temporally storage of five used segments in one compartment for 20 years, the space dose rate in the compartment becomes lower than 250 Gy/hr, which is the limited value proposed for the remote handling in the ITER. The decay heat of the segments during the temporally storage is removed by flowing He. The segments are cooled at the temperature lower than 550• C. Then, the used back plates can be reused in the other operation of the reactor, since the mechanical properties of the back plates are not affected by the heat treatment during the temporally storage.

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Waste management for JAERI fusion reactors

Cited by 13 publications

References 11 publications

Torus configuration and materials selection on a fusion DEMO reactor, SlimCS

Torus configuration and materials selection on a fusion DEMO reactor, SlimCS

The feasibility of recycling and clearance of active materials from fusion power plants

Conceptual Design of Temporally Storage Area in Hot Cell for Fusion DEMO Reactor

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