| 摘要 |
The rack for storing nuclear fuel elements is provided with a plurality of joints for laterally supporting the upstanding tubes. Each joint is formed by a bar welded to the corner of a square tube in which a fuel element is to be contained. Each bar is, in turn, laterally contacted and secured to the adjacent bar by a tightening means. In one embodiment, the connecting bars are disposed in side-by-side relation with the tightening means including a horizontally disposed nut and bolt unit. In another embodiment, the bars are in the form of square bars which are shaped to accommodate a vertical bolt and nut assembly. In this embodiment, annular members having conical surfaces are received in mating grooves at the ends of the bars so as to draw the bars together during tightening of the nut and bolt unit. In a third embodiment, four square bars are drawn together via two U-shaped members horizontally disposed bolts. |
