After the Fukushima disaster, overseas nuclear power plants have established conditions for issuing a red alert in the event of fuel damage within the spent fuel pool and they have already implemented conditions for issuing a blue alert when fuel is exposed above the water surface. In South Korean nuclear power plants, a real-time monitoring system is in place to oversee the exposure of spent fuel to the surface within the spent fuel pool. To achieve this, a water level indicator gauge is installed within the spent fuel pool, allowing for continuous real-time monitoring. This paper conducted a comparative assessment of radiation levels from water level monitoring system in two units’ spent fuel pools based on the low water levels (1 feet from the storage rack), utilizing the radiation analysis code (MCNP).

• Donghee Lee(Korea Hydro and Nuclear Power (KHNP) Central Research Institute (KHNP-CRI)) corresponding author
• Yongdeog Kim(Korea Hydro and Nuclear Power (KHNP) Central Research Institute (KHNP-CRI))
• Kiyoung Kim(Korea Hydro and Nuclear Power (KHNP) Central Research Institute (KHNP-CRI))