Results 1 to 10 of about 69,304 (159)
Frontiers in Energy Research, 2022 During a severe accident in a nuclear reactor, the molten core—or corium—may be relocated into the reactor vessel’s lower plenum in case of core support plate failure.
Jules Delacroix +2 more
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Uncertainty analysis of molten corium In-Vessel Retention under External Reactor Vessel Cooling
International Journal of Advanced Nuclear Reactor Design and Technology, 2023 External Reactor Vessel Cooling (ERVC) is a key measure to realize molten corium In-Vessel Retention (IVR). The uncertainty of severe accident in core leads to the uncertainty of molten pool parameters in lower head, which may threat the reliability of ...
Shihao Wu +6 more
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Nuclear Engineering and Technology, 2015 Background: A numerical simulation was carried out to investigate the difference between internal and external heat-flux distributions at the reactor vessel wall under in-vessel retention through external reactor vessel cooling (IVR-ERVC). Methods: Total
Jaehoon Jung +3 more
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In-Vessel Melt Retention of Pressurized Water Reactors: Historical Review and Future Research Needs
Engineering, 2016 A historical review of in-vessel melt retention (IVR) is given, which is a severe accident mitigation measure extensively applied in Generation III pressurized water reactors (PWRs).
Weimin Ma, Yidan Yuan, Bal Raj Sehgal
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Influence of an in-vessel debris bed on the heat load to a reactor vessel under an IVR condition
Nuclear Engineering and Technology, 2023 We measured the heat load to a reactor vessel with and without the in-vessel debris bed under an IVR-ERVC condition. Mass transfer methodology was adopted based on heat and mass transfer analogy to achieve high Ra′H of order ∼1015 with compact test rigs.
Joon-Soo Park +2 more
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Test of Critical Heat Flux on Outer Surface of CAP1400 Pressurized Reactor Vessel
Shanghai Jiaotong Daxue xuebao, 2022 A full height sliced test facility is established based on the modeling process. The heating test section is manufactured by adopting the explosive welding technology, and the surface of carbon steel can simulate the actual surface characteristic of a ...
SHI Guobao, ZHENG Mingguang, ZHANG Kun, KUANG Bo, LIU Pengfei
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He jishu, 2022 BackgroundIn the event of a reactor severe accident, in-vessel retention (IVR) is a very effective and important severe accident mitigation measure. The lower head of the reactor pressure vessel (RPV) plays an important role in IVR strategy.
YANG Hao +4 more
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Study on the Calculation Method of Molten Pool Decay Heat Distribution under IVR Condition
Frontiers in Energy Research, 2021 As an important strategy to mitigate severe accidents, the in-vessel retention (IVR) technique has been applied to the new generation of pressurized water reactor (PWR).
Yisheng Hao +11 more
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Analysis of heat transfer of the RPV lower head under severe accidents with ASTEC
He jishu, 2023 BackgroundAmong the mitigating strategies for severe accidents, the in-vessel retention (IVR) is one of the useful remission measurements. The key point to evaluating IVR is to analyze that the final steady-state thermal load of the melt does not exceed ...
ZUO Jiaxu +4 more
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Frontiers in Energy Research, 2022 When the large pressurized water reactor in-vessel retention (IVR) system is put into operation, the outer wall of the reactor pressure vessel (RPV) will experience severe temperature fluctuations and be subjected to high internal pressure loads at the ...
Dahuan Zhu +6 more
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