原子力発電所用安全系低圧ケーブル絶縁体の劣化状態分析

カテゴリ: 論文誌(論文単位)

グループ名: 【A】基礎・材料・共通部門

発行日: 2016/09/01

タイトル(英語): Ageing State Analysis of Insulation of Safety-related Low Voltage Cables for Nuclear Power Plants

著者名: 皆川　武史(原子力規制庁長官官房技術基盤グループ),池田　雅昭(原子力規制庁長官官房技術基盤グループ)

著者名(英語): Takefumi Minakawa (Regulatory Standard and Research Department, Secretariat of Nuclear Regulation Authority (S/NRA/R)), Masaaki Ikeda (Regulatory Standard and Research Department, Secretariat of Nuclear Regulation Authority (S/NRA/R))

キーワード: 原子力発電所,安全系ケーブル,架橋ポリエチレン,エチレンプロピレンジエンゴム　　nuclear power plant,safety-related cable,cross-linked polyethylene,ethylene propylene diene rubber

要約(英語): Safety-related low voltage cables of nuclear power plants are required to perform their safety functions under anticipated environmental conditions over their service life. Elongation-at-break (EAB) has been used as an indicator for evaluating the degradation level of the polymeric insulation of the cables. This paper describes results of measurement of gel fraction, crystallinity from differential scanning calorimetry and infrared absorbance from attenuated total reflectance Fourier transform infrared spectroscopy for commonly used cable insulation types, cross-linked polyethylene, flame-retardant cross-linked polyethylene and flame-retardant ethylene propylene diene rubber, to investigate the correlation between polymeric molecular structure and EAB. The measurements were conducted following accelerated thermal ageing or concurrent thermal and radiation ageing for each insulation type. As a result, infrared absorbance of carboxylic acid for the concurrently aged insulation showed a clear correlation with EAB while gel content and crystallinity were not clearly related.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.136 No.9 （2016） 特集：電気電子絶縁材料システムシンポジウム

本誌掲載ページ: 574-579 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejfms/136/9/136_574/_article/-char/ja/