Speaker
Clara Colomer
(IDOM Nuclear Services)
Description
The ITER Vacuum Vessel (VV) is a double wall Stainless Steel structure that surrounds the plasma. It constitutes a major safety barrier for ITER, and, because of its function, is classified as Protection Important Component (PIC). Its design and construction has to follow the RCC-MR design code rules to verify the structural integrity under electromagnetic, thermal and seismic loads.
Computation Fluid Dynamic (CFD) analyses of the Irregular and the Regular Sector of the ITER VV have been launched last year with the company IDOM under ITER IO and F4E contracts. The aim of these computations is to generate reliable input data (temperature field and Heat transfer coefficients) for the subsequent mechanical analyses that have to demonstrate the structural integrity of the VV and that must be submitted to the Agreed Notified Body (ANB).
The Irregular Sector differs from the Regular one in the equatorial segment of the outboard (identified as PS3), in the triangular Support and penetration pipes in the outboard bottom part (PS4). Because of that, the models of the two Sectors share the same mesh in the inboard part (PS1), outboard upper part (PS2) and the common parts of PS4. Field Joints are included in the model in order to use representative boundary conditions and avoid the generation of unrealistic hot-spots at the boundaries of the sectors.
The applied heat load is the neutronic heat flux calculated with MNCP code. The data for the PS3 of irregular sector have been computed by University of Wisconsis, while data for the whole regular sector are computed by F4E. The model used for the heat flux calculations of regular sector includes a detailed representation of the VV, considering heterogeneous materials; moreover, the recent modifications of the ITER blanket system are taken into account
Co-authors
Agustin Aleman
(IDOM Nuclear Services, Gran Vía Carlos III, 97 bajos, 08028 Barcelona (Spain), Spain)
Alex Martin
(ITER Organization, Route de Vinon-sur-Verdon - CS 90 046 - 13067 St Paul Lez Durance Cedex – France, France)
Alfredo Portone
(ITER, FUSION FOR ENERGY, BARCELONA, Spain)
Clara Colomer
(IDOM Nuclear Services, Gran Vía Carlos III, 97 bajos, 08028 Barcelona (Spain), Spain)
Emili Martinez
(IDOM Nuclear Services, Gran Vía Carlos III, 97 bajos, 08028 Barcelona (Spain), Spain)
Flavien Sabourin
(ITER Organization, Route de Vinon-sur-Verdon - CS 90 046 - 13067 St Paul Lez Durance Cedex – France, France)
Francesca Cau
(ITER, FUSION FOR ENERGY, BARCELONA, Spain)
Imanol Zamora
(IDOM Nuclear Services, Gran Vía Carlos III, 97 bajos, 08028 Barcelona (Spain), Spain)
Jean Marc Martinez
(ITER Organization, Route de Vinon-sur-Verdon - CS 90 046 - 13067 St Paul Lez Durance Cedex – France, France)
Joan Caixas
(ITER, FUSION FOR ENERGY, BARCELONA, Spain)
Jorge Fradera
(IDOM Nuclear Services, Gran Vía Carlos III, 97 bajos, 08028 Barcelona (Spain), Spain)
Mathieu Ichard
(IDOM Nuclear Services, Gran Vía Carlos III, 97 bajos, 08028 Barcelona (Spain), Spain)
Pierfederico Briani
(IDOM Nuclear Services, Gran Vía Carlos III, 97 bajos, 08028 Barcelona (Spain), Spain)
Raul Pampin
(ITER, FUSION FOR ENERGY, BARCELONA, Spain)
