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Study of Thermal Stratification into Leaking Flow in the Nuclear Power Plant, Emergency Core Coolant System  

Han Seong-Min (Graduate School, Department of Mechanical Engineering, Korea University)
Choi Yong-Don (Department of Mechanical Engineering, Korea University)
Park Min-Soo (Graduate School, Department of Mechanical Engineering, Korea University)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.18, no.3, 2006 , pp. 202-210 More about this Journal
Abstract
In the nuclear power plant, emergency core coolant system (ECCS) is furnished at reactor coolant system (RCS) in order to cool down high temperature water in case of emergency. However, in this coolant system, thermal stratification phenomenon can be occurred due to coolant leaking in the check valve. The thermal stratification produces excessive thormal stresses at the pipe wall so as to yield thermal fatigue crack (TFC) accident. In the present study, when the turbulence penetration occurs in the branch pipe, the maximum temperature differences of fluid at the pipe cross-sections of the T-branch with thermal stratification are examine.
Keywords
Thermal stratification; Turbulence penetration; Safety injection system; Branch pipe;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Park, M._H., Kim, K.-C., Lee, S.-K., Kim, T.-R. and Lee, S.-C., 2002, Proc. of Summer Conf. of SAREK, pp.785-790
2 EPRl, Thermal Stratification, Cycling and Striping (TASCS), TR-I03581, 1994
3 Song, D.-I., Choi, Y. D. and Park, M.-S., 2001, Experimental research for identification of thermal stratification phenomena in the nuclear powerplant emergency core coolant system (ECCS), Trans. B, Proc. of Fall Conf. of KSME, pp.735-740
4 Choi, Y. D., Hong, S. W. and Park, M. S., 2003, The effect of turbulence penetration on the thermal stratification phenomenon caused by coolant leaking in a T-branch of square cross-section, International J. of Air-Conditioning and Refrigeration, Vol.11, No.2, pp. 51-60
5 Hong, S.-W., Choi, Y. D., Park, M.-S. and Seo, J. - H., 2001, Numerical analysis of thermal stratification into leaking flow in a T branch, Trans. B, Proc. of Fall Conf. of KSME, pp.729-734
6 Thermal Stresses in Piping Connected to Reactor Coolant Systems, 1988, United States Nuclear Regulatory Commission, Bulletin No. 88-08
7 Hong, S.-W., Choi, Y. D. and Park, M.-S., 2003, The effect of turbulence on the thermal stratification phenomenon caused by leaking flow in a T-branch of square crosssection, Korean J. of Air-Conditioning and Refrigeration, Vol. 15, No.3, pp.239-245