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Seki, Yasushi; Aoki, Isao; Yamano, Naoki; Tabara, Takashi

doi:10.1023/a:1021839219543

Cited by 8 publications

(2 citation statements)

References 7 publications

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“…development of superconducting coils with high current density). From the ecological point of view, fusion reactors produce no high level radioactive waste [15], and the CO 2 emission will be as low as for fission reactors [16]. These factors would bring about competitive superiority for fusion power plants.…”

Section: Cost Analysismentioning

confidence: 99%

Compact reversed shear tokamak reactor with a superheated steam cycle

et al. 2000

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The compact reversed shear tokamak CREST is a cost competitive reactor concept based on a reversed shear high β plasma and water cooled ferritic steel components. The moderate aspect ratio A = 3.4 and the elongation κ = 2.0 of CREST are very similar to the case of the ITER advanced mode plasma. Presentation of such a concept based on the ITER project should be worth while for formulating a fusion development strategy. The achievement of a competitive cost of electricity (COE) is the first priority for electric power industries. High β and high thermal efficiency are the most effective parameters for achieving a competitive COE. In order to achieve a high efficiency power plant, a superheated steam cycle has been adopted which permits a high thermal efficiency (η = 41%). Current profile control and high speed plasma rotation by neutral beam current drive stabilize the ideal MHD activity up to the Troyon coefficient βN = 5.5. A cost assessment has shown that CREST could generate about 1.16 GW(e) electric power at a competitive cost.

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Section: Cost Analysismentioning

confidence: 99%

Compact reversed shear tokamak reactor with a superheated steam cycle

et al. 2000

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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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Safety

2021

Fusion Reactor Design

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Cited by 8 publications

References 7 publications

Compact reversed shear tokamak reactor with a superheated steam cycle

Compact reversed shear tokamak reactor with a superheated steam cycle

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

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