Characterization of Damaged Epoxy Resins on Steel Liners OriginatedOperation of Nuclear Power Plant

摘要

The property chm~ges of epoxy coatings on steel plate in atomic reactor container have been mmlyzed in terms ofrnthermal properties in the case of simple irradiation and designed accident conditions (DBA: design basis accident). Twornkinds of the epoxy coating systems were selected in this work. The specimens were irradiated by two different dose rates,rni.e., 1×10~6 and 5×10~5 rad. The total dosage was fixed at 2×10~8 rad. Two kinds of DBA conditions were applied in thernspecimens. Their effects have been surveyed in the context of the clmnges of glass transition tenlperature (T_g), the initialrndecomposition temperatures (T_(IDT)), and the maximum decomposed temperature (T_(max)). As a result, the different epoxyrnsystems, irradiation rates, and DBA test conditions showed a significant change on the thermal properties of thernspecimens.