Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2009, Vol. 20 ›› Issue (4): 251-256 doi: 10.13538/j.1001-8042/nst.20.251-256

• NUCLEAR ENGINEERING • Previous Articles    

Model comparisons on molten core-concrete interactions

TONG Lili* CAO Xuewu LI Jingxi YANG Yajun   

  1. School of Nuclear Science and Engineering, Shanghai Jiaotong University, Shanghai 200240, China
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TONG Lili, CAO Xuewu, LI Jingxi, YANG Yajun. Model comparisons on molten core-concrete interactions.Nuclear Science and Techniques, 2009, 20(4): 251-256     doi: 10.13538/j.1001-8042/nst.20.251-256

Abstract:

Based on the plant model of 600-MW PWR, the molten core-concrete interactions (MCCI) under different models are studied. Station blackout (SBO) with steam-driven auxiliary feed water pump failure is selected as the case for the model comparisons analysis. The result shows that thermal resistance model between debris and concrete has much influence on the consequence of MCCI. The concrete erosion rate calculated with gas film model is much higher than that of slag film model. Some other model comparisons such as the chemical reaction heat and the configuration molten pool are also discussed.

Key words: Severe accident, Molten core-concrete interactions, Concrete ablation rate, Thermal resistance