Abstract
The replacement strategy of the massive Multi-Module
Blanket Segments (MMS) is a key driver in the design of
several DEMO systems. These include the blankets
themselves, the vacuum vessel (VV) and its ports and the
Remote Maintenance System (RMS).Common challenges to any
blanket attachment system have been identified, such as
the need for applying a preload to the MMS manifold, the
effects of the decay heat and several uncertainties
related to permanent deformations when removing the
blanket segments after service. The WP12 kinematics of
the MMS in-vessel transportation was adapted to the
requirements of each of the supports during 2013 and 2014
design activities.The RM equipment envisaged for handling
attachments and earth connections may be composed of up
to three different assemblies. An In-Vessel Mover at the
divertor level handles the lower support and earth
bonding, and could stabilize the MMS during
transportation. A Shield Plug crane with a 6 DoF
manipulator operates the upper attachment and earth
straps. And a Vertical Maintenance Crane is responsible
for the in-vessel MMS transportation and can handle the
removable upper support pins. A final proposal is
presented which can potentially reduce the number of
required systems, at the same time that speeds-up the RMS
global operations.
Original language | English |
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Pages (from-to) | 1500-1504 |
Journal | Fusion Engineering and Design |
Volume | 98-99 |
DOIs | |
Publication status | Published - 2015 |
MoE publication type | A1 Journal article-refereed |
Keywords
- remote handling
- DEMO
- blanket segments
- attachments