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Availability Analysis of the ITER Blanket Remote Handling System

Takahito MARUYAMA, Yuto NOGUCHI, Nobukazu TAKEDA and Satoshi KAKUDATE

Department of ITER Project, Japan Atomic Energy Agency, Naka 311-0193, Japan

(Received 4 November 2014 / Accepted 20 January 2015 / Published 27 February 2015)

Abstract

The ITER blanket remote handling system (BRHS) is required to replace 440 blanket first wall panels in a two-year maintenance period. To investigate this capability, an availability analysis of the system was carried out. Following the analysis procedure defined by the ITER organization, the availability analysis consists of a functional analysis and a reliability block diagram analysis. In addition, three measures to improve availability were implemented: procurement of spare parts, in-vessel replacement of cameras, and simultaneous replacement of umbilical cables. The availability analysis confirmed those measures improve the availability and capability of the BRHS to replace 440 blanket first wall panels in two years.

Copyright (c) 2015 The Japan Society of Plasma Science and Nuclear Fusion Research

Keywords

ITER, maintenance, remote handling, availability, RAMI

DOI: 10.1585/pfr.10.3405010

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References

• [1] D. van Houtte, K. Okayama and F. Sagot, Fusion Eng. Des. 85, 1220 (2010).
• [2] Y. Noguchi, T. Maruyama, N. Takeda and S. Kakudate, “Seismic Analysis of the ITER Blanket Remote Handling System” Manuscript submitted for publication.
• [3] Fusion component failure rate database (ITER private reference, ITER_D_EFPDV9).
• [4] System Requirement (SRD) Document SRD-23-01 (Blanket Remote Handling System) from DOORS (ITER private reference, ITER_D_28B6W8 v4.3).

This paper may be cited as follows:

Takahito MARUYAMA, Yuto NOGUCHI, Nobukazu TAKEDA and Satoshi KAKUDATE, Plasma Fusion Res. 10, 3405010 (2015).