Progress of ITER vacuum vessel

Design modifications were implemented in the vacuum vessel (VV) baseline design in 2011-2012 for finalization. The modifications are mostly due to interface components, such as support rails and feedthroughs for the in-vessel coils (IVC). Manufacturing designs are being developed at the domestic agencies (DAs) based on the baseline design. The W support design was also finalized and tests on scale mock-ups are under preparation. Design of the in-wall shielding (IWS) has progressed, considering, the assembly methods and the required tolerances. Further modifications are required to be consistent with the DAs' manufacturing designs. Dynamic tests on the inter-modular and stub keys to support the blanket modules are being performed to measure the dynamic amplification factor (DAF). An in-service inspection (ISI) plan has been developed and R&D was launched for ISI. Conceptual design of the W instrumentation has been developed. The W baseline design was approved by the agreed notified body (ANB) in accordance with the French Nuclear Pressure Equipment Order procedure. (C) 2013 ITER Organization. Published by Elsevier B.V. All rights reserved.