@inproceedings{12e883811c374f6e92f1e1e2620fd3a1,
title = "Study on the Impact of Squib Valve Opening Time on Maximum Temperature of Cladding During a SBO Accident in the ACP100",
abstract = "Small Modular Reactors (SMRs), exemplified by China{\textquoteright}s third-generation ACP100 design, integrate advanced safety features such as passive residual heat removal (PRHRS) and safety injection systems. A Station Blackout (SBO){\textemdash}loss of offsite power, turbine trip, and emergency AC power failure{\textemdash}can escalate into severe accidents like core meltdown. This study evaluates the ACP100{\textquoteright}s response to an SBO combined with PRHRS failure, focusing on the timing of squib valve activation to mitigate primary circuit pressure and replenish coolant. Using severe accident analysis software, variations in maximum cladding temperature were assessed with 1200 K as the failure threshold. Key findings: (1) Squib valve opening rapidly reduces cladding temperature by restoring coolant inventory; (2) Premature valve activation worsens accident severity; (3) Delayed valve opening (before cladding reaches 1200 K) prolongs temperature rise and better preserves cladding integrity. These insights highlight the critical balance between early intervention and delayed valve operation to optimize accident mitigation in SMRs.",
keywords = "ACP100, Numerical analysis, SBO, Small Modular Reactor (SMR), Squib valve",
author = "Yujian Wang and Haoli Wang and Shihao Wu and Yapei Zhang and Wenxi Tian and Suizheng Qiu and Su, \{G. H.\}",
note = "Publisher Copyright: {\textcopyright} The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2026.; 32nd International Conference on Nuclear Engineering, ICONE 2025 ; Conference date: 22-06-2025 Through 26-06-2025",
year = "2026",
doi = "10.1007/978-981-95-3237-7\_42",
language = "英语",
isbn = "9789819532360",
series = "Springer Proceedings in Physics",
publisher = "Springer Science and Business Media Deutschland GmbH",
pages = "513--522",
editor = "Sichao Tan and Weiqiang Xu and Yanyan Zhu",
booktitle = "Proceedings of the 32nd International Conference on Nuclear Engineering{\textemdash} Volume 8, ICONE 2025- Nuclear Codes and Standards, Licensing and Regulation, Mitigation Strategy for Beyond Design Basic Events",
}