Evaluation of Initial Temperature Effect on Transient Fuel Behavior under Simulated Reactivity-Initiated Accident Conditions

Autor:	Yutaka Udagawa, Toyoshi Fuketa, Tomoyuki Sugiyama
Rok vydání:	2010
Předmět:	Nuclear and High Energy Physics Nuclear fuel Chemistry Nuclear engineering Pressurized water reactor Enthalpy Nuclear reactor Coolant law.invention Nuclear Energy and Engineering Creep law Research reactor Burnup Nuclear chemistry
Zdroj:	Journal of Nuclear Science and Technology. 47:439-448
ISSN:	1881-1248 0022-3131
DOI:	10.1080/18811248.2010.9711634
Popis:	In order to evaluate possible effects of initial temperature on the transient fuel behavior, such as cladding deformation and fission gas release, under reactivity-initiated accident conditions, two comparative pulse-irradiation tests were performed on identical high-burnup PWR fuel rods under different temperature conditions at the Nuclear Safety Research Reactor (NSRR). The test RH-1 was carried out at room temperature of _20_C, while the coolant temperature in the test RH-2 was _280_C corresponding to the hot zero power temperature of PWR. The fuel rods did not fail in both tests against fuel enthalpy increases of 462 and 378 J/g, respectively. The results of the two tests were generally consistent with data previously obtained in a number of tests at room temperature, when the data were plotted as a function of the peak fuel enthalpy, not of the maximum increase in fuel enthalpy. Computer analysis using the RANNS code confirmed that the cladding residual deformation in the test RH-2 was driven only by...
Databáze:	OpenAIRE
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