ITER will require a sophisticated and agile inspection system to
perform a series of checks inside the machine. Cutting-edge technologies bringing
together metrology instruments, high-tech vision and robotics will be deployed
to create a one billion pixel 3D map of the plasma-facing surfaces inside the
ITER device. The In-Vessel Viewing System (IVVS) will help scientists inspect
changes, such as erosion, on In-Vessel components. With the help of six probes,
located in different ports inside the machine, the IVVS will measure nearly
100% of the surface of In-Vessel components with at least one measurement per
mm2 offering an excellent image.
Europe is responsible for delivering the IVVS. Recently, members of
F4E, ITER Organization, independent experts and company representatives
concluded successfully the Preliminary Design Review (PDR) of the system. More
than 35 participants took part to the two meetings to assess whether the
proposed design fully meets the requirements, and whether the design process is
adequate for the complexity, quality, and safety of the system. Representatives
from big and small-medium sized companies contributed to the design review such
as Veolia Nuclear Solutions (UK), ASE Optics Europe (Spain), Optima Systems
Consultancy (UK), 3D Scanners UK (UK), Cedrat Technologies (France), IDOM (Spain), Micronor
(Switzerland), Bridger Photonics Inc. (US).
“The IVVS Preliminary Design Review was carried out taking into
account the lessons learned from previous exercises conducted in the past, such
as the Divertor Remote Handling PDR”, says Carlo Damiani, F4E Remote Handling
Programme Manager. “The completion of
the Preliminary Design Review is an important step towards the fabrication of
the ITER In-Vessel Viewing System. What was until recently considered a conceptual
design is gradually starting to resemble to a proper system,” explains Gregory
Dubus, F4E Project Manager for the IVVS.
“The exchange we had during the two PDR sessions proved to be
extremely helpful and we will be taking the time to reflect on how to
incorporate them into the next design phase. The Final Design Review of the
IVVS is scheduled for November 2021,” adds Philip Bates, F4E Technical Officer
following IVVS activities.