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Nuclear reactor shroud

  • US 9,773,576 B2
  • Filed: 02/27/2014
  • Issued: 09/26/2017
  • Est. Priority Date: 02/27/2013
  • Status: Active Grant
First Claim
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1. A nuclear reactor vessel comprising:

  • an elongated cylindrical body defining an internal cavity containing primary coolant water;

    a nuclear fuel core disposed in the internal cavity;

    an elongated cylindrical shroud disposed in the internal cavity, the shroud comprising an inner shell, an outer shell, and a plurality of intermediate shells disposed between the inner and outer shells;

    a plurality of annular cavities formed between the inner and outer shells by the intermediate shells, the annular cavities each being filled with the primary coolant water;

    the shroud being comprised of a plurality of vertically-stacked shroud segments each including an annular top closure plate and an annular bottom closure plate, wherein the inner, outer, and intermediate shells of each shroud segment is seal welded to their respective top and bottom closure plates collectively forming a self-supporting shroud segment structure; and

    each shroud segment detachably coupled to an adjoining shroud segment.

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