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

25 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.
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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

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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.

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KW - blankets

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DO - 10.1016/j.fusengdes.2014.04.082

M3 - Article

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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