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KMID : 0371819980300010026
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Nuclear Engineering and Technology
1998 Volume.30 No. 1 p.26 ~ p.39
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PCCS Analysis Model for the Passively Cooled Steel Containment
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Hwang, Y.D.
Chung, B.D./Cho, B.H./Chang, M.H./Jeong, Ik
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Abstract
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The containment pressure and temperature transient analysis computer code CONTEMPT4/MOD5 is modified to incorporate the passive containment cooling models. The correlations are selected from the existing experimental heat transfer correlations to model the natural and mixed convection in annular space between the containment shell and the shield building. The evaporative heat transfer of the water film on the outer shell of the containment is modeled using the correlations derived from the analogy between the heat and mass transfer. The modified code is applied to the AP600 containment transient analysis for the model verification and the results are compared to the results of GOTHIC calculation done by Westinghouse. Also, a series of parametric sensitivity studies of heat transfer correlations, water film ratio and delay time of the wet cooling on the containment peak pressure and temperature following LOCA are performed for the containment of 1000MWe passive plant, KP1000.
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KEYWORD
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