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

ENG - Quantum Science and Energy Engineering

Research output: Contribution to journal › Article › peer-review

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%).

Original language	English
Pages (from-to)	1583-1586
Number of pages	4
Journal	Fusion Engineering and Design
Volume	146
DOIs	https://doi.org/10.1016/j.fusengdes.2019.02.133
Publication status	Published - 2019 Sep

Keywords

DEMO design
In-vessel component
Pipe connection
Plant availability
Remote maintenance

ASJC Scopus subject areas

Civil and Structural Engineering
Nuclear Energy and Engineering
Materials Science(all)
Mechanical Engineering

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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",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier B.V.",

year = "2019",

month = sep,

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

language = "English",

volume = "146",

pages = "1583--1586",

journal = "Fusion Engineering and Design",

issn = "0920-3796",

publisher = "Elsevier BV",

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TY - JOUR

T1 - Progress on reliability of remote maintenance concept for JA DEMO

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

Y1 - 2019/9

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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DO - 10.1016/j.fusengdes.2019.02.133

M3 - Article

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VL - 146

SP - 1583

EP - 1586

JO - Fusion Engineering and Design

JF - Fusion Engineering and Design

SN - 0920-3796

ER -

Progress on reliability of remote maintenance concept for JA DEMO

Abstract

Keywords

ASJC Scopus subject areas

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