Risk mitigation strategy for the ITER electron cyclotron upper port launcher

TitleRisk mitigation strategy for the ITER electron cyclotron upper port launcher
Publication TypeJournal Article
Year of Publication2010
AuthorsA.PH Goede, W.A Bongers, B.SQ Elzendoorn, MF Graswinckel, MR de Baar
JournalFusion Engineering and Design
Volume85
Number7-9
Pagination1117-1124
Date PublishedDec
Type of ArticleProceedings Paper
ISBN Number0920-3796
Accession NumberISI:000287333200032
KeywordsElectron cyclotron heating, ITER, Risk analysis
Abstract

A basic requirement for ITER equipment to meet is a high level of reliability, because ITER operation time is precious and radioactive operation leaves limited scope for repair. In order to reduce the risk of failure during ITER operation an effective risk mitigation strategy is necessary. This paper presents such strategy for the ITER electron cyclotron upper port launcher (ECUPL). A preliminary ECUPL risk analysis identifies possible failure modes. A probabilistic risk assessment quantifies the risk of failure using a 4 x 4 impact-likelihood matrix. Impact is quantified through technical, cost and schedule elements. Likelihood depends on the risk mitigation strategy adopted. A cost benefit analysis determines the most cost effective risk mitigation strategy. An essential element in risk mitigation is the testing of equipment prior to installation on the ITER machine. This paper argues the need for low- and highpower millimetre wave tests carried out on the fully assembled ECUPL It presents a conceptual design for a dedicated on-site test bed that can handle 2 of 8 microwave beams at 2 MW long pulse operation. (C) 2010 Elsevier B.V. All rights reserved.

URL<Go to ISI>://000287333200032
Division

Fusion Physics

PID

059f58c30aed72ab8d6a5dad47b727c1

Alternate TitleFusion Eng. Des.

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