The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 08, 2001
Filed:
Feb. 10, 1999
Olov Nylund, Västerås, SE;
Thorbjörn Sahlin, Västerås, SE;
ABB Atom AB, Vasteras, SE;
Abstract
The present invention relates to a fuel assembly for a light-water nuclear reactor with a substantially square cross section which comprises fuel rods (,) extending between a bottom tie plate (,) and a top tie plate (,). A coolant is adapted, during operation, to flow upwards through the fuel assembly. According to one aspect of the invention, the fuel assembly comprises a plurality of fuel units (,) stacked on top of each other, wherein each fuel unit (,) comprises a plurality of fuel rods (,) extending between a top tie plate (,) and a bottom tie plate (,). The fuel units are arranged attached to a support structure (,) extending through the whole fuel assembly such that axial gaps are formed between the fuel units (,). One of the tie plates is freely movable relative to the support structure.