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http://dx.doi.org/10.5855/ENERGY.2017.26.3.071

Analysis on Heat Loss of Hybrid Safety Injection Tank to Predict Pressure Equalizing Time  

Kim, Myoung Jun (Korea Atomic Energy Research Institute)
Ryu, Sung Uk (Korea Atomic Energy Research Institute)
Kim, Jae Min (Korea Atomic Energy Research Institute)
Park, Hyun-Sik (Korea Atomic Energy Research Institute)
Yi, Sung-Jae (Korea Atomic Energy Research Institute)
Publication Information
Journal of Energy Engineering / v.26, no.3, 2017 , pp. 71-77 More about this Journal
Abstract
In the event of loss of coolant accident (LOCA) and station black out (SBO) in the primary system of a nuclear reactor, the coolant water should be injected to reactor coolant system (RCS) without any intervention of operators or active components. To satisfy the requirements, hybrid safety injection tank (Hybrid SIT) was suggested by Korea Atomic Energy Research Institute (KAERI). The pressure equalizing time of Hybrid SIT is an important parameter to determine the timing of coolant injection. To predict the pressure equalizing time of the Hybrid SIT, a separate effect test facility was constructed and sensitivity tests were conducted in various conditions. The main parameter determining the pressure equalizing time was obtained from separate effect test (SET) results. The wall of condensation on the inner wall of SIT and direct contact condensation on the water surface affected to the pressure equalizing time very much. In this study, the effect of each condensation phenomena on pressure equalizing time was quantitatively analyzed from results of SET and a prediction method of pressure equalizing time was proposed.
Keywords
Hybrid SIT; Pressure equalizing time; Condensation; Heat loss;
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  • Reference
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