Infrared observation of ballooning and burst of nuclear fuel cladding tubes
نویسندگان
چکیده
Nuclear fuel claddings can balloon and rupture at high temperatures under internal gas pressure in case of design basis accidents like loss-of-coolant-accident (LOCA). The thermal phenomena surrounding the ballooning cracking was investigated a series experiments performed using zirconium alloy cladding tubes Centre for Energy Research Hungary. were recorded high-speed infrared camera intermediate range measured in-situ. It found that before tube, ballooned surface forms bulge heats up locally, hot spot appears. During crack propagation, tip temperature is significantly warmer than rest tube. rate increase determined. emission coefficient slightly oxidized samples also emissivity fit our measurements to be around ε = 0.89.
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ژورنال
عنوان ژورنال: Nuclear Engineering and Design
سال: 2021
ISSN: ['0029-5493', '1872-759X']
DOI: https://doi.org/10.1016/j.nucengdes.2020.110942