SEVERE ACCIDENT MITIGATION FEATURE OF IN-VESSEL CORIUM RETENTION THROUGH EXTERNAL REACTOR VESSEL COOLING FOR SMART
4th International Technical Meeting on Small Reactors - 2016 Nov. 02-04


Presented at:
4th International Technical Meeting on Small Reactors
2016 Nov. 02-04
Location:
Ottawa, ON Canada
Session Title:
Parallel Session I: SMR Safety Analysis

Authors:
R.J. Park (Korea Atomic Energy Research Institute (KAERI))
  

Abstract

An IVR-ERVC (In-Vessel corium Retention through External Reactor Vessel Cooling) for severe accident mitigation is adopted as a design feature in the SMART (System-integrated Modular Advanced Reactor) of a Korean small integral reactor. A criterion to prevent reactor vessel failure using the IVR-ERVC of a SMART has been evaluated during a severe accident. The thermal margin was evaluated through a comparison of the thermal load with the maximum heat removal rate of the CHF on the outer reactor vessel wall. Because the thermal margin for the IVR-ERVC is sufficient, the reactor vessel integrity is maintained during a severe accident in SMART.

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