Progress on the manufacturing of ITER thermal shields
| Autor: | Namil Her, Yong-Hee Lee, Kisuk Lim, Dong Kwon Kang, Kwanwoo Nam, Chang Hyun Noh, Kyoung-O Kang, German Perez Pichel, Manoj Panchal, Junyoung Hur, Il Jim Kim, Won Woo Park |
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| Rok vydání: | 2020 |
| Předmět: |
Cryostat
Leak Materials science Mechanical Engineering Nuclear engineering Shields Superconducting magnet engineering.material 01 natural sciences 010305 fluids & plasmas Nuclear Energy and Engineering Coating Shield 0103 physical sciences engineering General Materials Science Helium mass spectrometer Tube (fluid conveyance) 010306 general physics Civil and Structural Engineering |
| Zdroj: | Fusion Engineering and Design. 160:111855 |
| ISSN: | 0920-3796 |
| Popis: | The role of the ITER thermal shield (TS) is to minimize the radiation heat load transferred from the warm components to the superconducting magnet operating at 4.5 K. Fabrication of the TS components is ongoing. Manufacturing of LCTS (Lower Cryostat TS) cylinder and VVTS (Vacuum Vessel TS) sector #6 was completed. The leak tightness of the cooling tubes, the on-site installation feasibility and the quality of the silver coated surfaces are main concerns during the manufacturing. Leak tightness of the cooling tubes is guaranteed by the test and the inspection. The surfaces of the cooling tube inside are inspected visually using the endoscope and the leak tightness has been qualified by the pressure and helium leak test. The on-site installation feasibilities are validated by the preassembly test at the factory. According to the qualified coating process, the TS panels are electro-plated with silver. This paper describes the manufacturing progress and the technical achievements. |
| Databáze: | OpenAIRE |
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