Progress on reliability of remote maintenance concept for JA DEMO

Joint Special Design Team for Fusion DEMO

doi:10.1016/j.fusengdes.2019.02.133

Progress on reliability of remote maintenance concept for JA DEMO

Joint Special Design Team for Fusion DEMO

工学研究科・量子エネルギー工学専攻

National Institutes for Quantum and Radiological Science and Technology

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

4 被引用数 (Scopus)

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JA DEMO selected the vertical maintenance scheme as the primary maintenance option. In order to improve reliability of Remote Handling (RH) and plant availability, update of in-vessel transferring mechanism of the segment, pipe unit structure on maintenance port were carried out. The RH equipment is composed of end-effectors (grippers) for the banana segment, a power manipulator, a telescopic guide and a carrier. The pipe structure in vertical maintenance port was updated considering the thermal expansion, easy handling (short maintenance time) and alignment of welding groove. Based on estimation of maintenance time, four works in parallel will be required for plant availability reachable for commercialization (>60%).

本文言語	英語
ページ（範囲）	1583-1586
ページ数	4
ジャーナル	Fusion Engineering and Design
巻	146
DOI	https://doi.org/10.1016/j.fusengdes.2019.02.133
出版ステータス	出版済み - 2019 9月

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10.1016/j.fusengdes.2019.02.133

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title = "Progress on reliability of remote maintenance concept for JA DEMO",

abstract = "JA DEMO selected the vertical maintenance scheme as the primary maintenance option. In order to improve reliability of Remote Handling (RH) and plant availability, update of in-vessel transferring mechanism of the segment, pipe unit structure on maintenance port were carried out. The RH equipment is composed of end-effectors (grippers) for the banana segment, a power manipulator, a telescopic guide and a carrier. The pipe structure in vertical maintenance port was updated considering the thermal expansion, easy handling (short maintenance time) and alignment of welding groove. Based on estimation of maintenance time, four works in parallel will be required for plant availability reachable for commercialization (>60\%).",

keywords = "DEMO design, In-vessel component, Pipe connection, Plant availability, Remote maintenance",

author = "\{Joint Special Design Team for Fusion DEMO\} and Hiroyasu Utoh and Satoshi Kakudate and Ryoji Hiwatari and Youji Someya and Yoshiteru Sakamoto and Nobuyuki Asakura and Shinsuke Tokunaga and Kenji Tobita",

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year = "2019",

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doi = "10.1016/j.fusengdes.2019.02.133",

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AU - Joint Special Design Team for Fusion DEMO

AU - Utoh, Hiroyasu

AU - Kakudate, Satoshi

AU - Hiwatari, Ryoji

AU - Someya, Youji

AU - Sakamoto, Yoshiteru

AU - Asakura, Nobuyuki

AU - Tokunaga, Shinsuke

AU - Tobita, Kenji

PY - 2019/9

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N2 - JA DEMO selected the vertical maintenance scheme as the primary maintenance option. In order to improve reliability of Remote Handling (RH) and plant availability, update of in-vessel transferring mechanism of the segment, pipe unit structure on maintenance port were carried out. The RH equipment is composed of end-effectors (grippers) for the banana segment, a power manipulator, a telescopic guide and a carrier. The pipe structure in vertical maintenance port was updated considering the thermal expansion, easy handling (short maintenance time) and alignment of welding groove. Based on estimation of maintenance time, four works in parallel will be required for plant availability reachable for commercialization (>60%).

AB - JA DEMO selected the vertical maintenance scheme as the primary maintenance option. In order to improve reliability of Remote Handling (RH) and plant availability, update of in-vessel transferring mechanism of the segment, pipe unit structure on maintenance port were carried out. The RH equipment is composed of end-effectors (grippers) for the banana segment, a power manipulator, a telescopic guide and a carrier. The pipe structure in vertical maintenance port was updated considering the thermal expansion, easy handling (short maintenance time) and alignment of welding groove. Based on estimation of maintenance time, four works in parallel will be required for plant availability reachable for commercialization (>60%).

KW - DEMO design

KW - In-vessel component

KW - Pipe connection

KW - Plant availability

KW - Remote maintenance

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Progress on reliability of remote maintenance concept for JA DEMO

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