高速炉カバーガスの伝熱流動と機器開発

抄録

Temperature of an upper surface of a roof slab or a shield plug of FBR should be maintained to room temperature from a view point of accessability. It is necessary to clarify the heat transfer characteristics in cover gas space, vertical annulus and insulation structure for evaluation of the design items i.e. the thermal loading, displacement, stress and so on.
On the other hand many upper structural components should also be required to have movable functions. Since there is a fear that sodium is continuing to accumulate and solidification occurs in the gap of movable components, it is necessary to clarify the mass transfer characteristics and develop preventive methods.
This report summarizes basic experimental results and experiences concerning the technology above mentioned.