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Tashiro, Shinsuke; Uchiyama, Gunzo; Ono, Takuya; Amano, Yuki; Yoshida, Ryoichiro; Watanabe, Koji*; Abe, Hitoshi; Yamane, Yuichi
Nuclear Technology, 10 Pages, 2024/00
Times Cited Count：0 Percentile：0.00(Nuclear Science & Technology)Contributing to the confinement safety evaluation of glove-box (GB) connected with high efficiency particle air (HEPA) filters for radioactive materials under fire accidents, combustion tests of a flammable polymer, Polymethyl methacrylate (PMMA), and a flame retardant polymer, Polycarbonate (PC), as typical GB panel resins have been conducted with an engineering-scale combustion apparatus. The combustion properties such as the mass loss rate (MLR) and the heat release rate (HRR) of PMMA and PC were investigated in the combustion tests. In the tests with the same shapes, it was found the followings; MLRs and HRRs of PMMA were larger than those of PC under the same supply flow rate into the combustion cell (Fv); MLRs and HRRs of PMMA and PC were constant under different Fv. Moreover, in the tests of PMMA with different cross section areas (S), MLRs and HRRs were found to be proportional to S. Using these results, the relationships of MLR and HRR to S of PMMA and PC were deduced.
Soyama, Hitoshi*; Futakawa, Masatoshi; Homma, Kana*
Journal of Nuclear Materials, 343(1-3), p.116 - 122, 2005/08
Times Cited Count：10 Percentile：55.66(Materials Science, Multidisciplinary)In order to estimate life time of the mercury target vessel of spallation neutron source which will be subjected to cavitation impacts, prediction methods of pitting damage induced by the cavitation impact were proposed. It is very important to estimate incubation time, in which plastic deformation occurs without mass loss, because the thickness of vessel is very thin. In the present paper, two estimation methods were proposed. One of them is estimatiion from erosion test of severely damaged specimen by plotting the mass loss as a function of exposure time to cavitation on the logarithmic scales. Another method is the observation method of plastic deformation pits on damaged surface at very early period in incubation stage.
C.J.Choi*; Nakamura, Hideo
Annals of Nuclear Energy, 24(4), p.275 - 285, 1997/00
Times Cited Count：7 Percentile：51.96(Nuclear Science & Technology)no abstracts in English
; Murao, Yoshio
JAERI-M 83-091, 108 Pages, 1983/06
no abstracts in English
;
Journal of Nuclear Science and Technology, 20(3), p.267 - 269, 1983/00
Times Cited Count：0 Percentile：0.29(Nuclear Science & Technology)no abstracts in English
