Plasma and Fusion Research
Volume 9, 3405140 (2014)
Regular Articles
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki 509-5292, Japan
- 1)
- Japan Atomic Energy Agency, 2-168 Oaza-Obuchi-Aza-Omotedate, Rokkasho 039-3212, Japan
- 2)
- Central Research Institute of Electric Power Industry, 2-11-1 Iwado-kita, Komae 201-8511, Japan
Abstract
A new model to evaluate the plant availability of a fusion reactor by considering the required cooling time before starting the scheduled replacement of in-vessel components was developed and incorporated in the tokamak system design code TPC-SCONE. Plant availability strongly depends on the electric output and decreases with increasing electric output. The plant availability does not much improve by advances in the physics or engineering design conditions. Consequently, the effect of the increase in the electric output on reducing the cost of electricity is diminished. Thus, proper selection of the electric output of a fusion reactor (especially for a DEMO reactor) is likely required to achieve the plant availability target.
Keywords
reactor design, system design code, cost model, plant availability, time required for replacement
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References
- [1] J. Sheffield et al., ORNL/TM-9311 (1986).
- [2] H. Fujieda et al., JAERI-M 92-178 (1992) (in Japanese).
- [3] M. Nakamura et al., Fusion Eng. Des. 87, 864 (2012).
- [4] H. Utoh et al., J. Plasma Fusion Res. SERIES 9, 304 (2010).
- [5] R. Hiwatari et al., Nucl. Fusion 44, 106 (2004).
- [6] K. Tobita et al., Nucl. Fusion 47, 892 (2007).
- [7] H. Utoh et al., Nucl. Fusion 53, 123005 (2013).
This paper may be cited as follows:
Takuya GOTO, Hiroyasu UTOH, Youji SOMEYA, Makoto NAKAMURA, Ryoji HIWATARI and Kenji TOBITA, Plasma Fusion Res. 9, 3405140 (2014).