Insulation Performance of a Cable Insulated with Flame-retardant Ethylene-propylene-diene Rubber Removed from a Nuclear Power Plant under Severe Accident Conditions
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- Watanabe Aiki
- Regulatory Standard and Research Department, Secretariat of Nuclear Regulation Authority (S/NRA/R)
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- Haga Asuka
- Regulatory Standard and Research Department, Secretariat of Nuclear Regulation Authority (S/NRA/R)
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- Minakawa Takefumi
- Regulatory Standard and Research Department, Secretariat of Nuclear Regulation Authority (S/NRA/R)
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- Ikeda Masaaki
- Regulatory Standard and Research Department, Secretariat of Nuclear Regulation Authority (S/NRA/R)
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- Hirai Naoshi
- RIMST, Waseda University
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- Ohki Yoshimichi
- RIMST, Waseda University
Bibliographic Information
- Other Title
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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
Abstract
<p>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.</p>
Journal
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- IEEJ Transactions on Fundamentals and Materials
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IEEJ Transactions on Fundamentals and Materials 142 (9), 368-374, 2022-09-01
The Institute of Electrical Engineers of Japan
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Details 詳細情報について
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- CRID
- 1390293268648866048
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- ISSN
- 13475533
- 03854205
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- Text Lang
- ja
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- Data Source
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- JaLC
- Crossref
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- Abstract License Flag
- Disallowed