5-9 September 2016
Prague Congress Centre
Europe/Prague timezone

P2.102 Beryllium bonding pre-qualification for the ITER First Wall procurement in EU Domestic Agency

6 Sep 2016, 14:20
1h 40m
Foyer 2A (2nd floor), 3A (3rd floor) (Prague Congress Centre)

Foyer 2A (2nd floor), 3A (3rd floor)

Prague Congress Centre

5. května 65, Prague, Czech Republic
Board: 102
Poster F. Plasma Facing Components P2 Poster session

Speaker

Stefano Banetta (Fusion for Energy)

Description

This paper describes the main activities carried out for the conclusion of the EU-DA prequalification process for the supply of Normal Heat Flux (NHF) First Wall (FW) panels to ITER. A key part of these activities is the High Heat Flux (HHF) testing of a reduced scale FW prototype (Semi-Prototype (SP)). This component is manufactured by the AREVA Company in France and has a dimension of 221 x 665 mm22, corresponding to about 1/6 of a full-scale panel. Other EU manufacturers are also developing similar manufacturing routes in view of the future series production. The manufacturing process makes extensive use of Hot Isostatic Pressing joining method, which was developed over more than a decade during the ITER Engineering Design Activity phase. The SP includes some variants (tile grain orientation, anti-diffusion layer materials) which bring additional valuable knowledge beyond the qualification. The HHF test is performed successfully in the “Tsefey-M” facility at the Efremov Institute in Saint Petersburg, Russia. The objective of the testing is demonstrating successful bonding at up to 125% of the design heat load. The test protocol and facility qualification are presented and the thermal behavior under the 7500 cycles at 2 MW/m22, and 1500 cycles at 2.5 MW/m2 2 is described in detail. A sufficient number of tiles succeeds in the testing (less than 20% temperature increase between initial and final heat cycles) for the two test levels of 2 and 2.5 MW/m², granting qualification as per ITER requirements. The successful qualification of the EUDA SP opens the way to full scale prototype qualification, which is currently underway. The full scale prototype program is the last milestone before series production of the 215 panels that EUDA is due to deliver to ITER, which is about half the total surface of the first wall.

Co-authors

Boris Bellin (Fusion for Energy, Torres Diagonal Litoral, B3, Carrer Josep Pla, 2 – 08019 Barcelona, Spain) Raphael Mitteau (ITER Organization, Route de Vinon-sur-Verdon, CS 90 046, 13067 St. Paul Lez Durance Cedex, France) Rene Raffray (ITER Organization, Route de Vinon-sur-Verdon, CS 90 046, 13067 St. Paul Lez Durance Cedex, France) Stefano Banetta (Fusion for Energy, Torres Diagonal Litoral, B3, Carrer Josep Pla, 2 – 08019 Barcelona, Spain)

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