Study on the Pressure Balance of the Hybrid Safety Injection Tank

피동충수용 혼합형 안전주입탱크의 압력평형에 관한 이론적 해석 및 시험적 연구

  • Received : 2015.11.03
  • Accepted : 2016.01.21
  • Published : 2016.03.31


The Hybrid Safety Injection Tank is a passive safety injection system that enables the safety injection water to be injected into the reactor pressure vessel throughout all operating pressures by connecting the top of the SIT and the pressurizer(PZR). In this study, the condition for balancing the pressure between the Hybrid SIT and PZR was derived theoretically. The pressure balancing condition was set at the point where the velocity of the Hybrid SIT coolant injected into the Direct Vessel Injection(DVI) line was at or above zero. If the condition was derived from a pressure network for the Hybrid SIT, pressurizer, and reactor pressure vessel, the pressure difference between the pressurizer and SIT is less than 0.07 MPa.


Hybrid Safety Injection Tank;Pressure Balance;Separate Effect Facility


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Supported by : 한국에너지기술평가원(KETEP)