Results 151 to 160 of about 2,961,144 (192)

Simulant Melt Experiments on In-Vessel Retention Through External Reactor Vessel Cooling

Nuclear Technology, 2006
External reactor vessel cooling (ERVC) is one of the major severe accident management strategies for operating nuclear power plants. Flow circulation inside the reactor pressure vessel (RPV) insulator should be effective enough to ensure sufficient heat removal via ERVC.
Kang, KH Kang, Kyoung-Ho, Park, RJ Park, Rae-Joon, Kim, SB Kim, Sang-Baik, Kim, HD Kim, Hee-Dong, Chang, SH Chang, Soon-Heung   +4 more
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Upward-facing multi-nozzle spray cooling experiments for external cooling of reactor pressure vessels

International Journal of Heat and Mass Transfer, 2020
Abstract Cooling by water spray is a well-known technology that can reach significantly higher Critical Heat Flux (CHF) compared to other cooling methods. For the light water reactor safety, the in-vessel retention (IVR) by external reactor vessel cooling (ERVC) is a comprehensive severe accident management strategy to arrest and confine the corium ...
Satya V. Ravikumar Bandaru, Walter Villanueva, Alexander Konovalenko, Andrei Komlev, Sachin Thakre, Per Sköld, Sevostian Bechta   +6 more
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Conjugate heat transfer analysis for in-vessel retention with external reactor vessel cooling

Annals of Nuclear Energy, 2016
Abstract A conjugate heat transfer analysis method for the thermal integrity of a reactor vessel under external reactor vessel cooling conditions is developed to resolve light metal layer focusing effect issue for in-vessel retention. The method calculates steady-state three-dimensional temperature distribution of a reactor vessel using coupled ...
Jong Woon Park
exaly   +2 more sources

Numerical computation of a reactor vessel melting under external cooling conditions

Journal of Nuclear Science and Technology, 2017
ABSTRACTNumerical computations are performed for melting and natural convection in the liquefied region of a reactor vessel under external cooling to find more thermal margin for in-vessel retention. Existing typical experiment and calculations for gallium melting are used for the validation.
Jong-Woon Park, Hyuk-Jin Song
exaly   +2 more sources

Evaluation of in-vessel corium retention through external reactor vessel cooling for small integral reactor

Nuclear Engineering and Design, 2013
Abstract A criterion to prevent reactor vessel failure using in-vessel corium retention through the external reactor vessel cooling (IVR-ERVC) of a small integral reactor has been evaluated during a severe accident. A thermal load analysis from the corium pool to the outer reactor vessel wall in the lower plenum of the reactor vessel was performed to
Hwan Yeol Kim, Kwang Soon Ha, Rae-Joon Park   +2 more
exaly   +2 more sources

RELAP Simulation on Boiling and Flow Phenomena Under External Reactor Vessel Cooling Condition

18th International Conference on Nuclear Engineering: Volume 4, Parts A and B, 2010
External reactor vessel cooling (ERVC) of the In-vessel retention (IVR) system is widely accepted as a feasible way to remove decay heat from the lower head of the reactor pressure vessel (RPV) under severe accident (SA) conditions. However, some issues relating to ERVC still need to be evaluated before its application, such as boiling and flow ...
Yongchun Li, Weihua Zhou, Yanhua Yang, Bo Kuang, Xu Cheng   +4 more
openaire   +2 more sources

Effect of in-core instrumentation mounting location on external reactor vessel cooling

Annals of Nuclear Energy, 2017
Abstract The effect of in-core instrumentation (ICI) mounting location on the application of in-vessel corium retention through external reactor vessel cooling (IVR-ERVC), used to mitigate severe accidents in which the nuclear fuel inside the reactor vessel becomes molten, was investigated.
Jungsoo Suh, Huiun Ha
exaly   +2 more sources

An assessment methodology for in-vessel corium retention by external reactor vessel cooling during severe accidents in PWRs

Annals of Nuclear Energy, 2001
Abstract A consistent probabilistic approach is proposed to evaluate the feasibility of in-vessel retention of the molten corium through external reactor vessel cooling (IVR-ERVC) during severe accidents of pressurized water reactors (PWRs). By combining the results of Level-1 probabilistic safety assessment, a critical heat flux correlation, and ...
Park, JH Park, Jae Hong, Jeong, YH Jeong, Yong Hoon, Baek, WP Baek, Won-Pil, Chang, SH Chang, Soon Heung   +3 more
openaire   +3 more sources

Numerical study of in-vessel retention under the gallium–water external reactor vessel cooling system using MARS-LMR

Journal of Nuclear Science and Technology, 2015
To confirm the feasibility of the gallium–water IVR-ERVCS (in-vessel retention-external reactor vessel cooling system), this paper focuses on the numerical simulation of severe accidents in APR 1400 using MARS-LMR (multidimensional analysis of reactor safety-liquid metal reactor).
Kang, Sarah, Park, Seong Dae, Kim, In Guk, Bang, In Cheol   +3 more
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Investigations on in-vessel melt retention by external cooling for a generic VVER-1000 reactor

Annals of Nuclear Energy, 2015
Abstract External or internal hazards, combined with multiple failures of components and safety systems or human errors can lead to a reactor core melt. In that case the reactor pressure vessel is the last barrier to keep the molten materials inside the reactor and to prevent further challenges to the nuclear power plant structures and consequently ...
Eberhard Altstadt, Fridman, Emil
exaly   +3 more sources