This paper studies the mitigation strategies for combustible gases in a NPP. Based on the PSA results and engineering experiences, one typical case and one bounding case are chosen for the study of the control systems for the combustible gases. The combustible gases control strategies for AP1000 and EPR are also discussed. The studies find that, the combustible gases control system should be designed along with containment heat removal systems. The containment heat removal system will cool the containment and condense the vapor in the containment, which will facilitate the effectiveness of the igniters. The advantage of the passive recombiners system is the ability to eliminate hydrogen beyond the flammability limit. But the recombination rate is slow, and at the early stage of the accidents, the hydrogen will still be at a high level. In this condition, the operation of the containment heat removal systems should be designed carefully to eliminate the negative hydrogen risks.
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2017 25th International Conference on Nuclear Engineering
July 2–6, 2017
Shanghai, China
Conference Sponsors:
- Nuclear Engineering Division
ISBN:
978-0-7918-5785-4
PROCEEDINGS PAPER
Studies on the Mitigation Strategies for Combustible Gases in a NPP Available to Purchase
Meilan Chen,
Meilan Chen
China Nuclear Power Technology Research Institute, Shenzhen, China
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Peng Chen,
Peng Chen
China Nuclear Power Technology Research Institute, Shenzhen, China
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Yehong Liao
Yehong Liao
China Nuclear Power Technology Research Institute, Shenzhen, China
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Meilan Chen
China Nuclear Power Technology Research Institute, Shenzhen, China
Peng Chen
China Nuclear Power Technology Research Institute, Shenzhen, China
Yehong Liao
China Nuclear Power Technology Research Institute, Shenzhen, China
Paper No:
ICONE25-66326, V007T11A005; 6 pages
Published Online:
October 17, 2017
Citation
Chen, M, Chen, P, & Liao, Y. "Studies on the Mitigation Strategies for Combustible Gases in a NPP." Proceedings of the 2017 25th International Conference on Nuclear Engineering. Volume 7: Fuel Cycle, Decontamination and Decommissioning, Radiation Protection, Shielding, and Waste Management; Mitigation Strategies for Beyond Design Basis Events. Shanghai, China. July 2–6, 2017. V007T11A005. ASME. https://doi.org/10.1115/ICONE25-66326
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