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Experimental investigation of spray cooling behavior in 4$$times$$4 simulated fuel bundle

Nagatake, Taku ; Shibata, Mitsuhiko ; Yoshida, Hiroyuki  ; Nemoto, Yoshiyuki  ; Kaji, Yoshiyuki  

In Fukushima Daiichi Nuclear Power Plant accident, failure of cooling system for spent fuel pool occurred and there was a concern that the spent fuels were damaged. Then a safety measures for SFP cooling in severe accident condition is required. As a countermeasure for SFP severe accident, it is considered that a portable spray is used for SFP cooling in such condition. In this research project, the numerical simulation methods have been developed in order to evaluate the applicability of portable spray system for cooling SFPs. And experiments were also performed in order to get a knowledge of spray cooling phenomena and validation data for the numerical simulation methods. As one of the experiments, a cooling experiment by using 4$$times$$4 simulated fuel assembly were performed and temperature distribution during spray cooling process were measured. In this paper, the results of a cooling experiment are reported.

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Category:Nuclear Science & Technology

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