| 摘要 |
A relatively low profile lower tie plate assembly (14) for interconnecting the lowermost end of an array of reactor fuel rods and guide tubes (11) and for capturing debris carried by flowing coolant comprises substantially planar, spaced apart, upper and lower members (20,22) and a skirt member (28) extending along the periphery of, enclosing and interconnecting the upper and lower planar members (20,22), the lower planar member (22) including a relatively small number of large openings (25) adapted for flow of coolant into the assembly in a vertical direction, the upper planar member comprising an array of a large number of relatively small, debris-resistant, coolant flow holes (24) dimensioned to trap at least a portion of the debris particles carried by the coolant. The assembly further comprises a plurality of guide tube screws (31) extending through and fastened to the lower planar member (22) and further extending through the upper planar member (20) to a height sufficient to support and position lowermost extremes of associated guide tubes (11) and surrounding guide tube sleeves (35) which project upwardly from the upper member (20), the portions (39) of the guide tube screws (31) which extend through the lower member (22) being adapted for engaging alignment (40) pins associated with a support plate (26) for the tie plate assembly. <IMAGE>
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