CPR1000 severe accident management guideline (SAMG) is a product of the Westinghouse Owners Group (WOG) SAMG and the French SAMG (called GIAG) combination. It adopts the structure of WOG SAMG. However, it follows the approach of GIAG performing reactor coolant system (RCS) depressurization immediately after entering SAMG. This is a special feature of CPR1000 SAMG. The purpose of this paper is to evaluate this RCS depressurization strategy. The simulations of a station blackout (SBO) accident are performed for CPR1000 with RCS depressurization strategy adopted at both core exit temperature (CET) of 650 and 1100 °C together with opening different number of safety relief valves (SRV) using an integral severe accident analysis code. The optimized RCS depressurization strategy is provided to delay the reactor pressure vessel (RPV) failure time. And some comments are provided for future improvement.
Funding source: National Natural Science Funds of China
Award Identifier / Grant number: No. 72104207
Funding source: Natural Science Foundation of Fujian Province of China
Award Identifier / Grant number: No. 2020J01038
Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
Research funding: This work was supported by the National Natural Science Funds of China (No. 72104207) and the Natural Science Foundation of Fujian Province of China (No. 2020J01038).
Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
Henry, C.E. and Landgren, V. (2003). MAAP4 modular accident analysis program for LWR power plants, computer code user’s manual. Electric Power Research Institute, Palo Alto.Search in Google Scholar
Jacquemain, D., Cenerino, G., Corenwinder, F., Raimond, E.I., Bentaib, A., Bonneville, H., Clement, B., Cranga, M., Fichot, F., and Koundy, V. (2015). Nuclear power reactor core melt accidents. Current state of knowledge. EDP Sciences, France.Search in Google Scholar
Ni, X., Zheng, J., Hou, E., Hao, J., Bian, B., and Li, N. (2016). Simulation of early phase radioactivity of CPR1000 plant under LOCAs based on RELAP5-3D core engineering simulator. Prog. Nucl. Energy 93: 47–58, https://doi.org/10.1016/j.pnucene.2016.07.019.Search in Google Scholar
Wang, S.-J., Chiang, K.-S., and Chiang, S.-C. (2004). Analysis of PWR RCS injection strategy during severe accident. Nucl. Technol. 146: 199–205, https://doi.org/10.13182/nt04-a3498.Search in Google Scholar
Westinghouse Owners Group, and Westinghouse Electric Corporation. (1994). Severe accident management guidance: WOG program MUHP-2310. Westinghouse Electric Corp, Pittsburgh, PA.Search in Google Scholar
Wu, L., Yu, P., Huang, Z.A., Li, J., Zheng, J., Wang, J., Xu, T., Gao, Y., Cao, L., and Miao, H. (2021a). Development of optimization platform and its application in severe accident management. Prog. Nucl. Energy 136: 103721, https://doi.org/10.1016/j.pnucene.2021.103721.Search in Google Scholar
Wu, L., Miao, H., Yu, P., Huang, Z., Zheng, J., Li, J., Zhai, Z., and Jia, T. (2021b). Study of PWR hot leg creep rupture and RCS depressurization strategy during an SBO accident. Kerntechnik 86: 194–201, https://doi.org/10.1515/kern-2021-0005.Search in Google Scholar
Yang, Z., Chong, Y., Li, C., Deng, J., Xu, X., and Chai, G. (2013). Issues associated with the development of severe accident management guidelines for NPPs in China. 21st International Conference of Nuclear Engineering, Chengdu, China.10.1115/ICONE21-16838Search in Google Scholar
Yuan, K., Qie, W.Q., Tong, L.L., and Cao, X.W. (2013). Analysis on containment depressurization under severe accidents for a Chinese 1000 MWe NPP. Prog. Nucl. Energy 65: 8–14, https://doi.org/10.1016/j.pnucene.2013.01.006.Search in Google Scholar
Zheng, F. (2013). Brief discussion on ‘Daya Bay and Ling’ Ao nuclear power plant severe accident management guideline. Nucl. Saf. 12: 26–29.Search in Google Scholar
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