| 摘要 |
<p>The assembly, comprising a bundle of fuel pencils held in a cage between two fixed ends, has the upper end (8) fitted with at least one supporting spring (10) that is deformable in an axial direction (4). The spring is made up of multiple layers of flat rings (14) of a material with a wide range of elastic deformation, such as titanium or titanium alloy, located coaxially about an axis (10'). The spring is fixed to the fixed upper end of the fuel assembly with its axis perpendicular to that of the assembly.</p> |
