A. Tesini

ITER in-vessel components transfer using remotely controlled casks

The paper provides an overview of the ITER transfer cask system design. The system is required during the assembly and maintenance periods of ITER. The system is designed with safety as the primary goal, to ensure minimum exposure risk to personnel and to allow the reliable transfer of components between the machine and the hot cell.

ITER hot cell

The paper provides an overview of the International Thermonuclear Experimental Reactor (ITER) hot cell system design. The system includes the hot cell proper, required for use both during machine assembly and operations, and the radwaste facility. The hot cell is divided in different areas and equipped with a variety of process and testing equipment. The components and waste streams are such that repair and refurbishment operations have minimum impact on the overall machine operation schedule.

Remote Maintenance of In-Vessel Components for ITER

ITER in-vessel components must be remotely maintained due to neutron activation. Components that require maintenance include the blanket shield modules, divertor cassettes and ancillary systems mounted in the vacuum vessel (VV) ports. Maintenance is predominantly accomplished by component removal and transfer to the hot cell facility for repair or waste processing. Component transfer between the VV and the hot cell is performed in sealed casks that dock to the VV ports. An overview of the in-vessel remote maintenance requirements, techniques and equipment is presented.

Status of ITER neutral beam cell remote handling system

Abstract 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 replacement of line replaceable units, and their transport to and from a cask docked to the cell. A design of the remote handling system has been prepared to concept level which this paper describes including the development of a beam line transporter, beam source remote handling equipment, upper port remote handling equipment and equipment for the maintenance of the neutral shield. This equipment has been developed complete the planned maintenance tasks for the components of the neutral beam cell and to have inherent flexibility to enable as yet unforeseen tasks and recovery operations to be performed.

Overview of Bore Tools Systems for divertor remote maintenance of ITER

Because of the radiation levels preventing direct, hands-on access to the machine components, maintenance work on ITER will eventually require the use of Remote Handling techniques. In particular, the replacement of components such as divertor and blanket modules will require the use of remote cutting, welding and Non Destructive Testing of water cooling pipes.

Radiation and Safety Aspects of Removal of Activated Components from the ITER Vacuum Vessel

Remote maintenance of damaged components in ITER is based on replacement. This involves the transfer of activated components in sealed but not shielded transfer casks to the Hot Cell Facility. Measures taken to avoid the risk of contamination with tritium and activated dust during such operations are described and preparatory activities, involving hands-on assisted tasks, are summarized.

Applying remote handling attributes to the ITER neutral beam cell monorail crane

Abstract The maintenance requirements for the equipment in the ITER neutral beam cell require 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 that travels on a branched monorail track attached to the cell ceiling. This paper describes the principle design constraints and how the remote handling attributes were applied to the concept design of the monorail crane, concentrating on areas where novel design solutions have been required and on the remote recovery requirements and solutions.