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Risk assessment of accident of uncontrolled boron dilution at shutdown condition for PWR

Ke Guotu, Xu Hanming

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Abstract

Taking Guangdong Daya Bay Nuclear Power Station for reference plant, the potential accident initiators of uncontrolled boron dilution at shutdown condition for pressurized water reactor is analyzed and classified systematically. Based upon French NPPs operating experience over 750 reactor-years, the PSA method is adopted to evaluate the risk related to such accident. Finally, according to the estimated result some appropriate measures and recommendations to reduce the corresponding risk are proposed.

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What this paper is about

Taking Guangdong Daya Bay Nuclear Power Station for reference plant, the potential accident initiators of uncontrolled boron dilution at shutdown condition for pressurized water reactor is analyzed and classified systematically. Based upon French NPPs operating experience over 750 reactor-years, the PSA method is adopted to evaluate the risk related to such accident. Finally, according to the estimated result some appropriate measures and recommendations to reduce the corresponding risk are proposed.

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Available abstract

Taking Guangdong Daya Bay Nuclear Power Station for reference plant, the potential accident initiators of uncontrolled boron dilution at shutdown condition for pressurized water reactor is analyzed and classified systematically. Based upon French NPPs operating experience over 750 reactor-years, the PSA method is adopted to evaluate the risk related to such accident. Finally, according to the estimated result some appropriate measures and recommendations to reduce the corresponding risk are proposed.

Key concepts: Shutdown, Pressurized water reactor, Nuclear engineering, Environmental science, Nuclear power plant, Nuclear power, Dilution, Boron

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