Results 121 to 130 of about 1,560 (162)
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Conjugate heat transfer analysis for in-vessel retention with external reactor vessel cooling
Annals of Nuclear Energy, 2016Abstract 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, 2017ABSTRACTNumerical 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
Effect of in-core instrumentation mounting location on external reactor vessel cooling
Annals of Nuclear Energy, 2017Abstract 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
Investigations on in-vessel melt retention by external cooling for a generic VVER-1000 reactor
Annals of Nuclear Energy, 2015Abstract 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 ...
E Altstädt, E Fridman
exaly +3 more sources
Loop analysis of a natural circulation two-phase flow under an external reactor vessel cooling
International Communications in Heat and Mass Transfer, 2008Under ERVC (External Reactor Vessel Cooling) conditions in a severe accident, a natural circulation two-phase flow is driven and a decay heat from the reactor vessel wall can be removed for an integrity of a reactor vessel wall. In this study, to estimate a natural circulation mass flow rate and to analyze the major factor determining the natural ...
Kwang Soon Ha, Rae Joon Park
exaly +2 more sources
International Communications in Heat and Mass Transfer, 2008
During a severe accident in a nuclear power plant, a decay heat from a molten corium should be removed to maintain an integrity of the reactor vessel. This feasible strategy can be achieved by a External Reactor Vessel Cooling (ERVC) which requires a coolant to be circulated sufficiently between the reactor vessel and its insulation.
Kwang Soon Ha, Rae Joon Park
exaly +2 more sources
During a severe accident in a nuclear power plant, a decay heat from a molten corium should be removed to maintain an integrity of the reactor vessel. This feasible strategy can be achieved by a External Reactor Vessel Cooling (ERVC) which requires a coolant to be circulated sufficiently between the reactor vessel and its insulation.
Kwang Soon Ha, Rae Joon Park
exaly +2 more sources
CHF enhancement by vessel coating for external reactor vessel cooling
Nuclear Engineering and Design, 2006Abstract In-vessel retention (IVR) is a key severe accident management (SAM) strategy that has been adopted by some operating nuclear power plants and proposed for some advanced light water reactors (ALWRs). One viable means for IVR is the method of external reactor vessel cooling (ERVC) by flooding the reactor cavity during a severe accident.
J. Yang +5 more
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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
Rae-Joon Park +3 more
openaire +1 more source
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
Rae-Joon Park +3 more
openaire +1 more source
Nuclear Engineering and Design, 1999
Since the suggestion of external reactor vessel cooling (ERVC), the effects of melting and cooling on the response of structural integrity of the reactor pressure vessel (RPV) under core melting accident conditions have been investigated. To investigate the initial behavior of RPV lower head and the effects of analysis conditions on the structural ...
Jong Sung Kim, Tae Eun Jin
openaire +1 more source
Since the suggestion of external reactor vessel cooling (ERVC), the effects of melting and cooling on the response of structural integrity of the reactor pressure vessel (RPV) under core melting accident conditions have been investigated. To investigate the initial behavior of RPV lower head and the effects of analysis conditions on the structural ...
Jong Sung Kim, Tae Eun Jin
openaire +1 more source