R&D progress of Korean HCSB TBM |
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Authors: | Seungyon Cho Mu-Young Ahn In-Keun Yu Yi-Hyun Park Duck Young Ku Sang-Jin Lee Han-Ki Yoon Tae-Gyu Kim |
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Affiliation: | 1. National Fusion Research Institute, 169-148 Gwahangno, Yuseong-gu, Daejeon 305-806, Republic of Korea;2. Mokpo National University, 1666 Youngsan-ro, Cheonggye-myeon, Muan-gun, Jeonnam 534-729, Republic of Korea;3. Dong-Eui University, 995 Eomgwangno, Busan-jin-gu, Busan 614-714, Republic of Korea;4. Pusan National University, 63-2 Busandaehangno,Geumjeong-gu, Busan 609-735, Republic of Korea |
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Abstract: | Several R&Ds are being performed for Korean helium cooled solid breeder (HCSB) test blanket module (TBM) in the field of hydrogen isotopes permeation characteristics measurement in the helium purge line, joining technologies of structural materials, breeder pebble materials development, and the measurement of pebble bed characteristics. Electron beam welding for reduced activated ferritic–martensitic (RAFM) steel is evaluated to find optimal welding conditions. Also, a hydrogen permeation measurement apparatus is newly installed for the evaluation of the permeation barrier characteristics of stainless steel and RAFM steels. Two fabrication methods of lithium orthosilicate pebbles are investigated using slurry droplet methods. As methods of silicon carbide coating on the graphite pebble, microwave coating and chemical vapor deposition coating are evaluated. Two apparatuses are established to assess the thermo-mechanical properties of graphite and breeder pebble beds. The current status of R&D activities on these areas is introduced and the main progresses are addressed in this paper. |
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