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- 爾見 豊
- (一財)発電設備技術検査協会
書誌事項
- タイトル別名
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- Practical Method of Risk-Informed Decision Making in Nuclear Power Plant Operation and Its Safety Effect
- リスク ジョウホウ オ カツヨウ シタ ゲンシリョク ハツデンショ ウンヨウ ノ ジツヨウテキ ナ イシ ケッテイ シュホウ ト ソノ アンゼン ジョウ ノ コウカ
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<p> Before the Fukushima-Daiichi Accident, Japanese nuclear power plants (NPPs) were utilized with a capacity factor of around 70%, 20% lower than the US capacity factor of around 90%, which is a consequence of Japanese NPPs being operated with a shorter fuel cycle and longer outage period. One reason for this situation is that Japanese decision making is strongly focused on equipment reliability. In a typical pressurized-water reactor, however, core damage frequency (CDF) during refueling outage is higher than that during operation, that is, a short fuel cycle could possibly increase the total CDF of NPPs. In this paper, a decision-making rule using an index representing CDF par power generation is firstly proposed. Secondly, using this rule, a decision process is simulated to optimize the fuel cycle and refueling outage period while showing the effects on CDF reduction in each plant. Thirdly, by applying this decision process to all Japanese NPPs, the total CDF reduction in Japan is indicated. This simulation shows that the change of decision-making rule will bring about an 18% CDF reduction or 16% increase in power generation in total in Japan. At the same time, each NPP gains strong incentive to improve its own safety because this new rule permits a higher capacity factor operation only for the NPPs that are safer than the average.</p>
収録刊行物
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- 日本原子力学会和文論文誌
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日本原子力学会和文論文誌 20 (2), 41-49, 2021
一般社団法人 日本原子力学会
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詳細情報 詳細情報について
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- CRID
- 1390569690549127552
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- NII論文ID
- 130008046892
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- NII書誌ID
- AA11643165
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- ISSN
- 21862931
- 13472879
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- NDL書誌ID
- 031547151
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
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- 使用不可