Analysis of ITER upper port plug remote handling maintenance scenarios

Koning, J.F.; Baar, M.R. de; Elzendoorn, B.S.Q.; Heemskerk, C.J.M.; Ronden, D.; Schuth, W.J.

doi:10.1016/j.fusengdes.2012.01.015

Cited by 9 publications

(5 citation statements)

References 6 publications

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“…Availability considerations lead to the need for efficient maintenance solutions, usually by remote handling [10]. Two mainly independent approaches can be defined; on one side the general reliability of tools and processes can be optimized, on the other side the reduction of amount and complexity of the required remote handling tasks leads to faster and more reliable maintenance operations.…”

Section: In Vessel Part Of the Upper Launchermentioning

confidence: 99%

Progress of the ECRH Upper Launcher design for ITER

Strauß

Aiello

Bruschi

et al. 2014

Fusion Engineering and Design

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The design of the ITER ECRH system provides 20MW millimeter wave power for central plasma heating and MHD stabilization. The system consists of an array of 24 gyrotrons with power supplies coupled to a set of transmission lines guiding the beams to the four upper and the equatorial launcher. The front steering upper launcher design described herein has passed successfully the preliminary design review, and it is presently in the final design stage. The launcher consists of a millimeter wave system and steering mechanism with neutron shielding integrated into an upper port plug with the plasma facing blanket shield module (in-vessel) and a set of ex-vessel waveguides connecting the launcher to the transmission lines.Part of the transmission lines are the ultra-low loss CVD torus diamond windows and a shutter valve, a mitre bend section and the feedthroughs integrated in the plug closure plate. These components are connected by corrugated waveguides and form together the first confinement system (FCS). In-vessel, the mm-wave system includes a quasi-optical beam propagation system including four mirror sets and a front steering mirror. The millimeter wave system is integrated into a specifically optimized upper port plug providing structural stability to withstand plasma disruptions forces and the high heat load from the plasma side with a dedicated blanket shield module. A recent update in the ITER interface definition has resulted in the recession of the upper port plug first wall panels, which is now integrated into the design. Apart from the millimeter wave system the upper port plug houses also a set of shield blocks which provide neutron shielding. An overview of the actual ITER ECRH upper launcher is given together with some highlights of the design.

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Section: In Vessel Part Of the Upper Launchermentioning

confidence: 99%

Progress of the ECRH Upper Launcher design for ITER

Strauß

Aiello

Bruschi

et al. 2014

Fusion Engineering and Design

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“…However, research into a synthetic viewing system is being undertaken [8], employing cameras to geometrically calibrate a virtual scene to a real hardware setup [2].…”

Section: Modules Irrelevant To Rhscmentioning

confidence: 99%

“…ITER has established procedures to develop validated RH designs and methods [1] [2]. This implies that the accessibility and handle-ability of an ITER component by remote methods, needs to be reviewed.…”

Section: Introductionmentioning

confidence: 99%

“…Virtual Reality (VR) simulation is a cost-effective and flexible method to enable RH Compatibility Assessment (RHCA) [2].…”

Section: Introductionmentioning

confidence: 99%

“…The Remote Handling Study Centre (RHSC) [2] enables VR simulation for RH procedure detailing and validation. Operators can interact individually or as a team with the virtual environment by different means, including common computer interfaces such as keyboards, mice, joysticks and spacemice.…”

Section: Introductionmentioning

confidence: 99%

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Evaluating ITER remote handling middleware concepts

Koning

Heemskerk²,

Schoen³

et al. 2013

Fusion Engineering and Design

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Remote maintenance activities in ITER will be performed by a unique set of hardware systems, supported by an extensive software kit. A layer of middleware will manage and control a complex set of interconnections between teams of operators, hardware devices in various operating theatres, and databases managing tool and task logistics. The middleware is driven by constraints on amounts and timing of data like real-time control loops, camera images, and database access.The Remote Handling Study Centre (RHSC), located at FOM institute DIFFER, has a 4-operator work cell in an ITER relevant RH control room setup which connects to a virtual hot cell back-end. The Centre is developing and testing flexible integration of the Control Room components, resulting in proof-of-concept tests of this middleware layer. SW components studied include generic human-machine interface software, a prototype of a RH operations management system, and a distributed virtual reality system supporting multi-screen, multi-actor, and multiple independent views. Real-time rigid body dynamics and contact interaction simulation software supports simulation of structural deformation, "augmented reality" operations and operator training.The paper presents generic requirements and conceptual design of middleware components and Operations Management System in the context of a RH Control Room work cell. The simulation software is analyzed for realtime performance and it is argued that it is critical for middleware to have complete control over the physical network to be able to guarantee bandwidth and latency to the components.

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