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- W4232199076 abstract "performed in the large central experimental tube, which is one of the most excellent features of this reactor, using specially designed capsules or loops which can accommodate up to 49 BWR type test fuels. Many types of test fuels in various conditions will be examined by the NSRR program, such as BWR, PWR and FBR type fuels from the beginning of life to the end of life with and without simulated reactor internal structures. The experiments will be continued for more than 10 years divided into three phases. The first phase of the program will be devoted to the experiments pertaining to reactivity initiated accidents (RIA). In these experiments we will make use of the excellent pulsing capability of ACPR, which is expected to generate 100 MW-sec prompt energy release with 1.3 msec of minimum reactor period by 4.7 dollar reactivity insertion and to yield more than 280 cal/g-UO{sub 2} heat deposit even in an approximately 10% enriched BWR type test fuel. (280 cal/g-UO{sub 2} is believed enough heat deposit to cause fuel failure.) In general, heat flow behaviors from fuel meat to clad and from clad to coolant are very complex phenomena, but they are the key point in analyzing transient response of fuels. In the sudden heat transient conditions brought by pulsing, however, it will be possible to examine each phenomenon separately according to their characteristics of time delay. This is the main reason why RIA type experiments are selected at the initial stage of the NSRR program. The second phase of the program will be devoted to the experiments pertaining to power cooling mismatch (PCM) accidents and possibly loss of coolant accidents (LOCA). In these experiments, we will make use of the steady state power level which will be increased up to 14 MW. The third phase will be the experiments pertaining to burned-up fuels. (author)" @default.
- W4232199076 created "2022-05-12" @default.
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- W4232199076 date "1996-01-01" @default.
- W4232199076 modified "2023-09-27" @default.
- W4232199076 title "Nuclear safety. Technical progress journal, October 1996--December 1996" @default.
- W4232199076 doi "https://doi.org/10.2172/561213" @default.
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