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http://dx.doi.org/10.5855/ENERGY.2015.24.3.096

Preliminary Analysis of the Thermal-Hydraulic Performance of a Passive Containment Cooling System using the MARS-KS1.3 Code  

Bae, Sung Hwan (School of Mechanical Engineering, Pusan National University)
Ha, Tae Wook (School of Mechanical Engineering, Pusan National University)
Jeong, Jae Jun (School of Mechanical Engineering, Pusan National University)
Yun, Byong Jo (School of Mechanical Engineering, Pusan National University)
Jerng, Dong Wook (School of Energy System, Chung-Ang University)
Kim, Han Gon (Central Research Institute, Korea Hydro and Nuclear Power Co.)
Publication Information
Journal of Energy Engineering / v.24, no.3, 2015 , pp. 96-108 More about this Journal
Abstract
A passive containment cooling system has been designed to remove the heat inside a containment during accidents without external power supply. In this work, the PCCS was introduced in the APR1400 plant to replace the containment spray system and, then, the thermal-hydraulic performance of the PCCS was analyzed using the system thermal-hydraulic computer code, MARS. A double-ended cold-leg break accident, which is known to induce the maximum pressure in the containment, is simulated, where the thermal hydraulics of the PCCS, the reactor coolant system, and the containment are simultaneously simulated. The results of the calculations showed that the PCCS can replace the existing spray system and that the containment building and its internal structure also play a very important role for the heat removal during the accident. Some sensitivity calculations were carried out to evaluate the model uncertainty and the effects of design parameters. The limitations of the PCCS are also discussed.
Keywords
PCCS; MARS code; LOCA;
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