Results 131 to 140 of about 1,560 (162)

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
openaire   +1 more source

An experimental study of hypervapotron structure in external reactor vessel cooling

Nuclear Engineering and Design, 2016
Abstract In vessel retention (IVR) is one of the key strategies for many advanced LWR designs to mitigate postulated severe accidents. The success of IVR substantially relies on external reactor vessel cooling (ERVC) by which the decay heat is removed from the melt core in the reactor vessel lower head.
Yufeng Zhao, Ming Zhang, Fangxin Hou, Tianfang Gao, Peipei Chen   +4 more
openaire   +1 more source

Analysis of External Cooling of the Reactor Vessel During Severe Accidents

Nuclear Technology, 2002
An analysis is presented of the integral behavior of the external cooling of a reactor vessel by natural circulation during a severe accident to investigate the feasibility of the in-vessel retention strategy for a high-power reactor by using the RELAP5/MOD3 computer code.
Jin Ho Song, Sang Baik Kim, Hee Dong Kim
openaire   +1 more source

External cooling of a reactor vessel under severe accident conditions

Nuclear Engineering and Design, 1993
Abstract The TMI-2 accident demonstrated that a significant quantity of molten core debris could drain into the lower plenum during a severe accident. For such conditions, the Individual Plant Examinations (IPEs) and severe accident management evaluations, consider the possibility that water could not be injected to the RCS. However, depending on the
Robert E. Henry, Hans K. Fauske
openaire   +1 more source

Simulation of external reactor vessel cooling in a lumped-parameter code

Kerntechnik, 2013
Abstract In the course of a severe accident in a nuclear power plant the integrity of the reactor vessel may be preserved by External Reactor Vessel Cooling (ERVC). By flooding the cavity surrounding the reactor vessel the decay heat is removed from molten core material through the vessel wall to water at the submerged vessel surface. In
U. Schittek, M. K. Koch
openaire   +1 more source

Corium retention for high power reactors by an in-vessel core catcher in combination with External Reactor Vessel Cooling

Nuclear Engineering and Design, 2004
Abstract If there were inadequate cooling during a reactor accident, a significant amount of core material could become molten and relocate to the lower head of the reactor vessel, as happened in the Three Mile Island Unit 2 (TMI-2) accident. If it is possible to ensure that the vessel lower head remains intact so that relocated core materials are ...
J.L. Rempe, D.L. Knudson, K.G. Condie, K.Y. Suh, F.-B. Cheung, S.-B. Kim   +5 more
openaire   +1 more source

Experimental and Analytical Studies on the Penetration Integrity of the Reactor Vessel Under External Vessel Cooling

Nuclear Technology, 2004
Experimental and analytical studies on the penetration integrity of the reactor vessel have been performed to investigate the potential for reactor vessel failure during a severe accident in the Ad...
Rae-Joon Park, Kyoung-Ho Kang, Jong-Tae Kim, Ki-Young Lee, Sang-Baik Kim   +4 more
openaire   +1 more source

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
openaire   +1 more source

Limiting Factors for External Reactor Vessel Cooling

Nuclear Technology, 2005
The method of external reactor vessel cooling (ERVC) that involves flooding of the reactor cavity during a severe accident has been considered a viable means for in-vessel retention (IVR). For high-power reactors, however, there are some limiting factors that might adversely affect the feasibility of using ERVC as a means for IVR.
openaire   +1 more source

Experimental and Analytical Studies on Penetration Integrity of the Reactor Vessel Under External Vessel Cooling

10th International Conference on Nuclear Engineering, Volume 2, 2002
Experimental and analytical studies on the penetration integrity of the reactor vessel in the APR (Advanced Power Reactor) 1400 have been performed under the condition of external vessel cooling in a severe accident. The objective of this study is to estimate failure or non-failure of the penetration including the ICI (In-Core Instrumentation) nozzle ...
Rae-Joon Park, Kyoung-Ho Kang, Jong-Tae Kim, Kil-Mo Koo, Sang-Baik Kim, Ki-Young Lee   +5 more
openaire   +1 more source