Results 1 to 10 of about 1,532 (134)

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, Dong Wang, Yapei Zhang, Yukun Zhou, Wenxi Tian, Suizheng Qiu, G.H. Su   +6 more
doaj   +4 more sources

Structural Integrity Evaluation of a Reactor Cavity during a Steam Explosion for External Reactor Vessel Cooling [PDF]

Energies, 2021
Nuclear power is a major source of electricity in the international community. However, a significant problem with nuclear power is that, if a severe nuclear accident occurs, radiation may leak and cause great damage.
Sang-Hyun Park, Kwang-Hyun Bang, Jong-Rae Cho   +2 more
doaj   +2 more sources

Research on Optimized Design of In-Vessel Retention–External Reactor Vessel Cooling Strategy and Negative Effect Assessment [PDF]

Frontiers in Energy Research, 2022
Due to large uncertainty, the effectiveness of in-vessel retention (IVR) with external reactor vessel cooling (ERVC) for high-power reactors cannot be fully demonstrated during the transient process. To optimize the current IVR-ERVC strategy, the concept
Peng Chen, Zijie Wu, Dekui Zhan, Shaoxiong Xia, Xinhai Zhao   +4 more
doaj   +4 more sources

Numerical study on thermal-hydraulics of external reactor vessel cooling in high-power reactor using MARS-KS1.5 code: CFD-aided estimation of natural circulation flow rate

Nuclear Engineering and Technology, 2022
This paper presents a numerical investigation of two-phase natural circulation flows established when external reactor vessel cooling is applied to a severe accident of the APR1400 reactor for the in-vessel retention of the core melt.
Min Seop Song, Il Woong Park, Eung Soo Kim, Yeon-Gun Lee   +3 more
doaj   +3 more sources

Evaluation of heat-flux distribution at the inner and outer reactor vessel walls under the in-vessel retention through external reactor vessel cooling condition

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, Sang Mo An, Kwang Soon Ha, Hwan Yeol Kim   +3 more
doaj   +3 more sources

Modeling corium pool stratification and focusing effect in APR1400 using a multiphase CFD framework [PDF]

Scientific Reports
Accurately predicting molten corium behavior is critical for assessing severe accident scenarios in nuclear reactors, particularly under In-Vessel Corium Retention with Reactor Vessel External Cooling (IVCR-RVEC) strategies.
Kamran Mahboob, Ahmed Alkaabi, Yacine Addad   +2 more
doaj   +2 more sources

Numerical simulation on in-vessel molten corium behavior with external vessel cooling using smoothed particle hydrodynamics

Nuclear Engineering and Technology
The in-vessel retention through external reactor vessel cooling (IVR-ERVC) strategy is a key management strategy for early termination of a nuclear severe accident that can threaten the integrity of the reactor vessel.
Tae Hoon Lee, Yeon-Gun Lee, Kukhee Lim, Yun-Jae Kim, So-Hyun Park, Eung Soo Kim   +5 more
doaj   +3 more sources

Fuel–Coolant Interaction Visualization Test for In-Vessel Corium Retention External Reactor Vessel Cooling (IVR-ERVC) Condition

Nuclear Engineering and Technology, 2016
A visualization test of the fuel–coolant interaction in the Test for Real cOrium Interaction with water (TROI) test facility was carried out. To experimentally simulate the In-Vessel corium Retention (IVR)- External Reactor Vessel Cooling (ERVC ...
Young Su Na, Seong-Ho Hong, Jin Ho Song, Seong-Wan Hong   +3 more
doaj   +2 more sources

Structural behavior of an ablated reactor pressure vessel wall with external cooling

Progress in Nuclear Energy, 2022
Walter Villanueva
exaly   +2 more sources

Experimental Research for CHF Sensitivity of Heat Flux Distribution under IVR Conditions

Science and Technology of Nuclear Installations, 2022
In-vessel retention (IVR) through external reactor vessel cooling (ERVC) is one of the most effective severe accident mitigation measures in the nuclear power plants.
Shilei Han, Pengfei Liu, Bo Kuang, Yanhua Yang   +3 more
doaj   +1 more source