Nuclear Engineering and Technology

  • 제44권3호
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  • Pages.237-248
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  • 2012
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  • 1738-5733(pISSN)
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  • 2234-358X(eISSN)
한국원자력학회 (Korean Nuclear Society)
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CORIUM BEHAVIOR IN THE LOWER PLENUM OF THE REACTOR VESSEL UNDER IVR-ERVC CONDITION: TECHNICAL ISSUES

  • 투고 : 2012.03.28
  • 발행 : 2012.04.25
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초록

Corium behavior in the lower plenum of the reactor vessel during a severe accident is very important, as this affects a failure mechanism of the lower head vessel and a thermal load to the outer reactor vessel under the IVR-ERVC (In-Vessel corium Retention through External Reactor Vessel Cooling) condition. This paper discusses the state of the art and technical issues on corium behavior in the lower plenum, such as initial corium pool formation characteristics and its transient behavior, natural convection heat transfer in various geometries, natural convection heat transfer with a phase change of melting and solidification, and corium interaction with a lower head vessel including penetrations of the ICI (In-Core Instrumentation) nozzle are discussed. It is recommended that more detailed analysis and experiments are necessary to solve the uncertainties of corium behavior in the lower plenum of the reactor vessel.

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피인용 문헌

  1. Conceptual Design Enhancement for Prevention and Mitigation of Severe Accidents vol.188, pp.2, 2014, https://doi.org/10.13182/NT13-125
  2. Natural convection of melted core at the bottom of nuclear reactor vessel in a severe accident vol.42, pp.1, 2018, https://doi.org/10.1002/er.3893
  3. Modelling of Severe Accident and In-Vessel Melt Retention Possibilities in BWR Type Reactor vol.2018, pp.1687-6083, 2018, https://doi.org/10.1155/2018/7162387