原子力発電所から撤去された FR-EPDM ケーブルの重大事故環境下における絶縁性能

Aiki Watanabe; Asuka Haga; Takefumi Minakawa; Masaaki Ikeda; Naoshi Hirai; Yoshimichi Ohki

doi:10.1541/ieejfms.142.368

原子力発電所から撤去された FR-EPDM ケーブルの重大事故環境下における絶縁性能

Aiki Watanabe^*, Asuka Haga, Takefumi Minakawa, Masaaki Ikeda, Naoshi Hirai, Yoshimichi Ohki

^*この研究の対応する著者

各務記念材料技術研究所

研究成果: Article › 査読

抄録

The insulation performance of cables removed from an actual plant was investigated in a simulated severe accident (SA) environment. The cable insulated with flame-retardant ethylene propylene diene rubber (FR-EPDM) was a safety cable in the plant. A similar FR-EPDM-insulated cable was aged artificially to the degree equivalent to what the removed cable would have been suffered. These cables were irradiated with ⁶⁰Co gamma rays at a dose rate of 10 kGy/h for 50 hours at room temperature to simulate the radiation exposure during a SA. The cables were then exposed to a steam environment for 168 hours to simulate the SA. During the steam exposure, the insulation resistance of the cables was measured continuously. As a result, the minimum insulation resistance was about 10⁸ to 10⁹ Ωm in the two cables, indicating that both have sufficient insulation performance.

寄稿の翻訳タイトル	Insulation Performance of a Cable Insulated with Flame-retardant Ethylene-propylene-diene Rubber Removed from a Nuclear Power Plant under Severe Accident Conditions
本文言語	Japanese
ページ（範囲）	368-374
ページ数	7
ジャーナル	IEEJ Transactions on Fundamentals and Materials
巻	142
号	9
DOI	https://doi.org/10.1541/ieejfms.142.368
出版ステータス	Published - 2022

Keywords

cable
insulation performance
nuclear power plant
severe accident

ASJC Scopus subject areas

電子工学および電気工学

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10.1541/ieejfms.142.368

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title = "原子力発電所から撤去された FR-EPDM ケーブルの重大事故環境下における絶縁性能",

abstract = "The insulation performance of cables removed from an actual plant was investigated in a simulated severe accident (SA) environment. The cable insulated with flame-retardant ethylene propylene diene rubber (FR-EPDM) was a safety cable in the plant. A similar FR-EPDM-insulated cable was aged artificially to the degree equivalent to what the removed cable would have been suffered. These cables were irradiated with 60Co gamma rays at a dose rate of 10 kGy/h for 50 hours at room temperature to simulate the radiation exposure during a SA. The cables were then exposed to a steam environment for 168 hours to simulate the SA. During the steam exposure, the insulation resistance of the cables was measured continuously. As a result, the minimum insulation resistance was about 108 to 109 Ωm in the two cables, indicating that both have sufficient insulation performance.",

keywords = "cable, insulation performance, nuclear power plant, severe accident",

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AU - Watanabe, Aiki

AU - Haga, Asuka

AU - Minakawa, Takefumi

AU - Ikeda, Masaaki

AU - Hirai, Naoshi

AU - Ohki, Yoshimichi

PY - 2022

Y1 - 2022

N2 - The insulation performance of cables removed from an actual plant was investigated in a simulated severe accident (SA) environment. The cable insulated with flame-retardant ethylene propylene diene rubber (FR-EPDM) was a safety cable in the plant. A similar FR-EPDM-insulated cable was aged artificially to the degree equivalent to what the removed cable would have been suffered. These cables were irradiated with 60Co gamma rays at a dose rate of 10 kGy/h for 50 hours at room temperature to simulate the radiation exposure during a SA. The cables were then exposed to a steam environment for 168 hours to simulate the SA. During the steam exposure, the insulation resistance of the cables was measured continuously. As a result, the minimum insulation resistance was about 108 to 109 Ωm in the two cables, indicating that both have sufficient insulation performance.

AB - The insulation performance of cables removed from an actual plant was investigated in a simulated severe accident (SA) environment. The cable insulated with flame-retardant ethylene propylene diene rubber (FR-EPDM) was a safety cable in the plant. A similar FR-EPDM-insulated cable was aged artificially to the degree equivalent to what the removed cable would have been suffered. These cables were irradiated with 60Co gamma rays at a dose rate of 10 kGy/h for 50 hours at room temperature to simulate the radiation exposure during a SA. The cables were then exposed to a steam environment for 168 hours to simulate the SA. During the steam exposure, the insulation resistance of the cables was measured continuously. As a result, the minimum insulation resistance was about 108 to 109 Ωm in the two cables, indicating that both have sufficient insulation performance.

KW - cable

KW - insulation performance

KW - nuclear power plant

KW - severe accident

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原子力発電所から撤去された FR-EPDM ケーブルの重大事故環境下における絶縁性能

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Keywords

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