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http://dx.doi.org/10.9726/kspse.2016.20.4.038

Analysis on Activation Energy Measurement and Application of Nuclear Equipment Non-metallic Materials  

Bhang, Keug-Jin (Safety Qualification Center, KHNP Central Research Institute)
Hong, Jun-Hee (Mechanical Engineering Department, Chungnam National University)
Publication Information
Journal of Power System Engineering / v.20, no.4, 2016 , pp. 38-43 More about this Journal
Abstract
Safety-related equipments of Nuclear Power Plants(NPP) have to perform environmental qualification test in accordance with IEEE-323 standards. However, non-metallic materials replace new one regularly instead of the test because they are considered as consumable parts. In this study, the seven kinds of non-metallic materials are selected and their activation energy was experimentally evaluated with uncertainty analysis by using thermogravimetric analyzer(TGA). In order to obtain activation energy of non-metallic materials, mass difference, temperature raising rate and conversion rate on the specimen are analyzed. It is postulated that the three experiment conditions are important to get a reliable activation energy. This postulate was experimentally confirmed using Arrhenius equation and Flynn-Wall-Ozawa analysis.
Keywords
Non-metallic Material; Environment Qualification; Thermal Aging; activation energy;
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