著者

大江 修造

出版者

日本開発工学会

雑誌

開発工学 (ISSN:13437623)

巻号頁・発行日

vol.31, no.1, pp.19-22, 2011 (Released:2012-12-20)

参考文献数

5

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The Three Mile Island Unit-2 accident was examined from the view point of chemical engineering. It was concluded that preventive measures for the TMI atomic power plant were insufficient compared with those of a chemical plant. Zirconium alloy cladding reacts with steam and generates a hydrogen and zirconium oxide, which loses mechanical strength. As a result, the fuel element melted. At the temperature of 871°C, zirconium alloy starts to react with steam.Zr + 2H2O → ZrO2 + 2H2 + 141 Kcal (1)The reaction rate was observed by Pawel et al., and they presented a rate equation called the Cathcart-Pawel equation. According to the Cathcart-Pawel equation , zirconium alloy cladding was oxidized for 40 minutes at 1649°C (Schneider, 1980). This paper will state that the simulation of a hydrogen explosion at a higher temperature results in a significantly shorter reaction time. For example, at 1000°C the time is 100 hours, whereas at 1500°C it is two hours.

著者

伊藤 利朗

出版者

The Development Engineering Society of Japan

雑誌

開発工学 (ISSN:13437623)

巻号頁・発行日

vol.24, pp.9-14, 2006

著者

加藤 浩一郎

出版者

日本開発工学会

雑誌

開発工学 (ISSN:13437623)

巻号頁・発行日

vol.26, pp.21-30, 2007-10-30 (Released:2010-09-09)

参考文献数

18