Experimental research progress on critical heat flux of Chinese PWR |
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Authors: | Xiao Zejun Song Xianhui Lang Xuemei Bai Xuesong Ma Jieliang Wang Pengfei Chen Bingde |
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Affiliation: | National Key Laboratory of Bubble Physics & Natural Circulation, Nuclear Power Institute of China, 25 South Third Section, Er Huan Street, P.O. Box 622, Chengdu 610041, PR China |
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Abstract: | One of the most important requirements in the design of pressurized water reactor (PWR) is to avoid the occurrence of critical heat flux (CHF). The design criteria for PWR specify that they must be operated at a certain percentage below CHF at all times and locations so as to the cladding temperature of fuel element at safe values. So in the process of safety assessment, CHF is one of important thermal-hydraulic parameters limiting the available power, whose size directly affects safety and economy of PWR nuclear power plant. This paper deals with a summary of experimental research progress on CHF of Chinese PWR. It mainly presents CHF experimental researches of Φ10 fuel assembly, CHF experimental researches of standard fuel assembly, and CHF experimental progress of non-uniform heated rod bundles. It should be emphasized that it also presents experimental research programs on CHF of Chinese advanced fuel assembly with self-reliance copyright. All CHF data obtained will be used for design improvement of Chinese PWR and R&D program of New Generation 1000 MWe PWR. |
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