O.Crofts A.Loving M.Torrance S.Budden B.Drumm T.Tremethick D.Chauvin M.Siuko W.Brace V.Milushev M.Mittwollen T.Lehmann F.Rauscher G.Fischer P.Pagani Y.Wang C.Baars A.Vale
During the EU DEMO Pre-Concept Design Phase, the remote maintenance team developed maintenance strategies and systems to meet the evolving plant maintenance requirements. These were constrained by the proposed tokamak architecture and the challenging environments but considered a range of port layouts and handling system designs. The design‑d…
Preprint PurchaseE. Flynn P. Cooper O. Crofts A. Loving Z. Vizvary A. Wilde
DEMO is a key part of the EU fusion roadmap, where the programme is reaching the end of the pre-conceptual phase with a gate review in 2020. As part of the work to complete this phase, eight Key Design Integration Issues (KDII’s) have been identified as critical to the programme. Within KDII#1 (wall protection limiters) the feasibility of the Inn…
Preprint PublishedIain Farquhar James Davies Oliver Crofts Tony Loving
One of the major challenge in the commercialisation of fusion is maintaining the powerplant reactor in a sufficiently short period of time to achieve commercial levels of plant availability. To inform the development of an appropriate remote maintenance strategy for EU DEMO, a simplified, parametric model, called the Maintenance Duration Estimator …
Preprint PublishedOliver Crofts Antony Loving Richard Gowland Gregory Keech
The development of fusion as a viable power source is moving from the science driven design of experimental devices to the engineering design considerations required to develop a feasible power plant. An effective maintenance plan is essential because the time in maintenance is potentially very large. To be effective a maintenance plan must be o…
Preprint PublishedJ. Thomas A. Loving O. Crofts R. Morgan J. Harman
The DEMO Active Maintenance Facility (AMF) would be used for the storage, handling and processing of In- Vessel Components (IVC) throughout their time on site, the only exception being the time that they are installed in the vessel. It is anticipated that all handling operations associated with used components will have to be carried out using remo…
PublishedO Crofts P Allan J Raimbach A Tesini C-H Choi C Damiani M Van Uffelen
The maintenance requirements for the equipment in the ITER Neutral Beam Cell requires components to be lifted and transported within the cell by remote means. To meet this requirement, the provision of an overhead crane with remote handling capabilities has been initiated. The layout of the cell has driven the design to consist of a monorail crane …
PublishedN Sykes C Belcher C-H Choi O Crofts R Crowe C Damiani S Delavalle L Meredith T Mindham J Raimbach A Tesini M Van Uffelen
The ITER neutral beam cell will contain up to three heating neutral beams and one diagnostic neutral beam, and four upper ports. Though manual maintenance work is envisaged within the cell, when containment is breached, or the radiological protection is removed the maintenance must be conducted remotely. This maintenance constitutes the removal and…
PublishedA. Loving O. Crofts N. Sykes D. Iglesias M. Coleman J. Thomas J. Harman U. Fischer J. Sanz M. Siuko M. Mittwollen Et.Al.
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 pl…
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