Pre-conceptual design assessment of DEMO remote maintenance

A. Loving (Corresponding Author), O. Crofts, N. Sykes, D. Iglesias, M. Coleman, J. Thomas, J. Harman, U. Fischer, J. Sanz, Mikko Siuko, M. Mittwollen

    Research output: Contribution to journalArticleScientificpeer-review

    26 Citations (Scopus)

    Abstract

    EDFA, as part of the Power Plant Physics and Technology programme, has been working on the pre-conceptual design of a Demonstration Power Plant (DEMO). As part of this programme, a review of the remote maintenance strategy considered maintenance solutions compatible with expected environmental conditions, whilst showing potential for meeting the plant availability targets. A key finding was that, for practical purposes, the expected radiation levels prohibit the use of complex remote handling operations to replace the first wall. In 2012/2013, these remote maintenance activities were further extended, providing an insight into the requirements, constraints and challenges. In particular, the assessment of blanket and divertor maintenance, in light of the expected radiation conditions and availability, has elaborated the need for a very different approach from that of ITER. This activity has produced some very informative virtual reality simulations of the blanket segments and pipe removal that are exceptionally valuable in communicating the complexity and scale of the required operations. Through these simulations, estimates of the maintenance task durations have been possible demonstrating that a full replacement of the blankets within 6 months could be achieved. The design of the first wall, including the need to use sacrificial limiters must still be investigated. In support of the maintenance operations, a first indication of the requirements of an Active Maintenance Facility (AMF) has been elaborated.
    Original languageEnglish
    Pages (from-to)2246-2250
    JournalFusion Engineering and Design
    Volume89
    Issue number9-10
    DOIs
    Publication statusPublished - 2014
    MoE publication typeA1 Journal article-refereed
    Event11th International Symposium on Fusion Nuclear Technology-11, "ISFNT-11", 2014 - Barcelona, Spain
    Duration: 15 Sep 201420 Sep 2014

    Fingerprint

    Conceptual design
    Power plants
    Availability
    Radiation
    Erbium doped fiber amplifiers
    Limiters
    Virtual reality
    Demonstrations
    Physics
    Pipe

    Keywords

    • fusion energy
    • power plants
    • maintenance
    • divertors
    • blankets
    • remote handling

    Cite this

    Loving, A., Crofts, O., Sykes, N., Iglesias, D., Coleman, M., Thomas, J., ... Mittwollen, M. (2014). Pre-conceptual design assessment of DEMO remote maintenance. Fusion Engineering and Design, 89(9-10), 2246-2250. https://doi.org/10.1016/j.fusengdes.2014.04.082
    Loving, A. ; Crofts, O. ; Sykes, N. ; Iglesias, D. ; Coleman, M. ; Thomas, J. ; Harman, J. ; Fischer, U. ; Sanz, J. ; Siuko, Mikko ; Mittwollen, M. / Pre-conceptual design assessment of DEMO remote maintenance. In: Fusion Engineering and Design. 2014 ; Vol. 89, No. 9-10. pp. 2246-2250.
    @article{69cc30e79dd540fbbf7d7898f8f0cc84,
    title = "Pre-conceptual design assessment of DEMO remote maintenance",
    abstract = "EDFA, as part of the Power Plant Physics and Technology programme, has been working on the pre-conceptual design of a Demonstration Power Plant (DEMO). As part of this programme, a review of the remote maintenance strategy considered maintenance solutions compatible with expected environmental conditions, whilst showing potential for meeting the plant availability targets. A key finding was that, for practical purposes, the expected radiation levels prohibit the use of complex remote handling operations to replace the first wall. In 2012/2013, these remote maintenance activities were further extended, providing an insight into the requirements, constraints and challenges. In particular, the assessment of blanket and divertor maintenance, in light of the expected radiation conditions and availability, has elaborated the need for a very different approach from that of ITER. This activity has produced some very informative virtual reality simulations of the blanket segments and pipe removal that are exceptionally valuable in communicating the complexity and scale of the required operations. Through these simulations, estimates of the maintenance task durations have been possible demonstrating that a full replacement of the blankets within 6 months could be achieved. The design of the first wall, including the need to use sacrificial limiters must still be investigated. In support of the maintenance operations, a first indication of the requirements of an Active Maintenance Facility (AMF) has been elaborated.",
    keywords = "fusion energy, power plants, maintenance, divertors, blankets, remote handling",
    author = "A. Loving and O. Crofts and N. Sykes and D. Iglesias and M. Coleman and J. Thomas and J. Harman and U. Fischer and J. Sanz and Mikko Siuko and M. Mittwollen",
    year = "2014",
    doi = "10.1016/j.fusengdes.2014.04.082",
    language = "English",
    volume = "89",
    pages = "2246--2250",
    journal = "Fusion Engineering and Design",
    issn = "0920-3796",
    publisher = "Elsevier",
    number = "9-10",

    }

    Loving, A, Crofts, O, Sykes, N, Iglesias, D, Coleman, M, Thomas, J, Harman, J, Fischer, U, Sanz, J, Siuko, M & Mittwollen, M 2014, 'Pre-conceptual design assessment of DEMO remote maintenance', Fusion Engineering and Design, vol. 89, no. 9-10, pp. 2246-2250. https://doi.org/10.1016/j.fusengdes.2014.04.082

    Pre-conceptual design assessment of DEMO remote maintenance. / Loving, A. (Corresponding Author); Crofts, O.; Sykes, N.; Iglesias, D.; Coleman, M.; Thomas, J.; Harman, J.; Fischer, U.; Sanz, J.; Siuko, Mikko; Mittwollen, M.

    In: Fusion Engineering and Design, Vol. 89, No. 9-10, 2014, p. 2246-2250.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - Pre-conceptual design assessment of DEMO remote maintenance

    AU - Loving, A.

    AU - Crofts, O.

    AU - Sykes, N.

    AU - Iglesias, D.

    AU - Coleman, M.

    AU - Thomas, J.

    AU - Harman, J.

    AU - Fischer, U.

    AU - Sanz, J.

    AU - Siuko, Mikko

    AU - Mittwollen, M.

    PY - 2014

    Y1 - 2014

    N2 - EDFA, as part of the Power Plant Physics and Technology programme, has been working on the pre-conceptual design of a Demonstration Power Plant (DEMO). As part of this programme, a review of the remote maintenance strategy considered maintenance solutions compatible with expected environmental conditions, whilst showing potential for meeting the plant availability targets. A key finding was that, for practical purposes, the expected radiation levels prohibit the use of complex remote handling operations to replace the first wall. In 2012/2013, these remote maintenance activities were further extended, providing an insight into the requirements, constraints and challenges. In particular, the assessment of blanket and divertor maintenance, in light of the expected radiation conditions and availability, has elaborated the need for a very different approach from that of ITER. This activity has produced some very informative virtual reality simulations of the blanket segments and pipe removal that are exceptionally valuable in communicating the complexity and scale of the required operations. Through these simulations, estimates of the maintenance task durations have been possible demonstrating that a full replacement of the blankets within 6 months could be achieved. The design of the first wall, including the need to use sacrificial limiters must still be investigated. In support of the maintenance operations, a first indication of the requirements of an Active Maintenance Facility (AMF) has been elaborated.

    AB - EDFA, as part of the Power Plant Physics and Technology programme, has been working on the pre-conceptual design of a Demonstration Power Plant (DEMO). As part of this programme, a review of the remote maintenance strategy considered maintenance solutions compatible with expected environmental conditions, whilst showing potential for meeting the plant availability targets. A key finding was that, for practical purposes, the expected radiation levels prohibit the use of complex remote handling operations to replace the first wall. In 2012/2013, these remote maintenance activities were further extended, providing an insight into the requirements, constraints and challenges. In particular, the assessment of blanket and divertor maintenance, in light of the expected radiation conditions and availability, has elaborated the need for a very different approach from that of ITER. This activity has produced some very informative virtual reality simulations of the blanket segments and pipe removal that are exceptionally valuable in communicating the complexity and scale of the required operations. Through these simulations, estimates of the maintenance task durations have been possible demonstrating that a full replacement of the blankets within 6 months could be achieved. The design of the first wall, including the need to use sacrificial limiters must still be investigated. In support of the maintenance operations, a first indication of the requirements of an Active Maintenance Facility (AMF) has been elaborated.

    KW - fusion energy

    KW - power plants

    KW - maintenance

    KW - divertors

    KW - blankets

    KW - remote handling

    UR - https://www.sciencedirect.com/journal/fusion-engineering-and-design/vol/89/issue/9

    U2 - 10.1016/j.fusengdes.2014.04.082

    DO - 10.1016/j.fusengdes.2014.04.082

    M3 - Article

    VL - 89

    SP - 2246

    EP - 2250

    JO - Fusion Engineering and Design

    JF - Fusion Engineering and Design

    SN - 0920-3796

    IS - 9-10

    ER -

    Loving A, Crofts O, Sykes N, Iglesias D, Coleman M, Thomas J et al. Pre-conceptual design assessment of DEMO remote maintenance. Fusion Engineering and Design. 2014;89(9-10):2246-2250. https://doi.org/10.1016/j.fusengdes.2014.04.082