The Thermal-Mechanical Analysis of the BIT HCCB Blanket for CFETR Available to Purchase

CFETR is an “ITER-like” China Fusion Engineering Test Reactor. The BIT (Breeder insider tube) HCCB (Helium cooled ceramic breeder) blanket has been designed as one option for CFETR. Its unique feature is that a BIT structure is adopted for the blanket tritium breeder unit. The breeder unit is an assembly of three coaxial coil-pipes, internal coil-pipe is filled with the tritium-breeding material, and the coaxial coil-pipe is embeded in the beryllium pebble. In order assess the feasibility of the BIT HCCB blanket design, a 3D finite element model slice of the BIT HCCB blanket is developed, and the thermo-hydraulic calculation was performed, and thermo-mechanical computations were carried out. And then the primary stress and secondary stress were evaluated according to Structural Design Criteria for ITER In-vessel Components (SDC-IC). This paper presents relevant analyses and results. The preliminary results shows current design satisfies with allowable limit of material and requirement of SDC-IC code.