Journal ArticleDOI
The influence of the crust layer on RPV structural failure under severe accident condition
Jianfeng Mao,Jianfeng Mao,Li Xiangqing,Shiyi Bao,Shiyi Bao,Lijia Luo,Zengliang Gao,Zengliang Gao +7 more
TLDR
In this paper, a detailed investigation is conducted by using numerical simulation on the two pressure vessel (RPV) with and without crust layer respectively, and the authors assesses the likelihood and potential failure location, time and mode of the lower head (LH) under the loadings of the critical heat flux (CHF) and slight internal pressure.About:
This article is published in Nuclear Engineering and Design.The article was published on 2017-05-01. It has received 7 citations till now. The article focuses on the topics: Creep.read more
Citations
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Journal ArticleDOI
Investigation on the RPV structural behaviors caused by various cooling water levels under severe accident
Jianfeng Mao,Jianfeng Mao,Linghui Hu,Shiyi Bao,Shiyi Bao,Lijia Luo,Zengliang Gao,Zengliang Gao +7 more
TL;DR: In this paper, the authors investigated the structural behavior of the pressure vessel (RPV) under the severe accident (SA) event of core meltdown and found that the structural failure occurs at the site aside around the water level.
Journal ArticleDOI
Microscopic damage mechanism of SA508 Gr3 steel in ultra-high temperature creep
TL;DR: In this paper, the microstructure of different creep stages was examined by scanning electron microscopy and TEM microscopy, and the results showed that the microscopic damage is mainly induced by creep cavities and coarse second-phase particles.
Journal ArticleDOI
The Studies on Multiaxial Creep Behavior of Inconel 718 Notched Bar at 700 °C
TL;DR: In this article, the authors studied the multi-axial creep behavior of Inconel 718 alloy at 700°C and found that the influence of notch radius on its creep behavior and damage evolution was studied through experimental and numerical investigation.
Journal ArticleDOI
Development of a lumped-parameter code for efficient assessment of in-vessel melt retention strategy of LWRs
TL;DR: In this paper, a transIVR code was developed to estimate transient one-and two-layer melt pool heat transfer with reasonable accuracies, and two-dimensional representation of heat conduction in the pressure vessel wall, facilitating the coupled thermo-mechanical analysis of the reactor pressure vessel under thermal loads.
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The Influence of Crust Layer on Reactor Pressure Vessel Failure Under Pressurized Core Meltdown Accident
TL;DR: In this paper, the effect of corium crust on the RPV structural behavior was examined under multilayered crust formation conditions with consideration of detailed thermal characteristics, such as high-temperature gradient across the wall thickness.
References
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Journal ArticleDOI
In-vessel coolability and retention of a core melt
TL;DR: In this article, the efficacy of external flooding of a reactor vessel as a severe accident management strategy is assessed for an AP600-like reactor design, and the assessment includes consideration of bounding scenarios and sensitivity studies, as well as arbitrary parametric evaluations that allow for the delineation of the failure boundaries.
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Characteristics of Corium Debris Bed Generated in Large-Scale Fuel Coolant Interaction Experiments
TL;DR: In this paper, the formation of corium debris as the result of fuel-coolant interaction (energetic or not) has been studied experimentally in the FARO and KROTOS facilities operated at JRC-Ispra between 1991 and 1999.
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Analysis of safety margin of in-vessel retention for AP1000
TL;DR: In this article, a point estimate procedure has been developed for modeling the steady-state endpoint of two core melt configurations: Configuration I and Configuration II, and the results of benchmark calculations of AP600 by IVRASA were consistent with those of the UCSB and INEEL.
Journal ArticleDOI
Experimental evaluation of the water ingression mechanism for corium cooling
TL;DR: In this paper, the authors evaluated the significance of water ingression cooling in the quenching of molten corium and provided an experimental basis for a water- ingression model that can be incorporated into computer codes used to assess accident management strategies.