Fuel assembly for nuclear reactor
AssigneeABB Atom AB
InventorOlov Nylund
Life of this patent
Estimating the term…
Abstract
A fuel assembly for a nuclear reactor is provided with a number of parallel fuel rods, which are retained by means of spacers (2), and guide tubes (3) between the fuel rods. The guide tubes (3) are also attached to the spacers (2) as well as to a top nozzle and a bottom nozzle (4, 5). The guide tubes (3) are provided, at least at the spacers (2), with external threads (7) for improved fixing to the spacers.
Claims9
A fuel assembly for a nuclear reactor, comprising a number of parallel fuel rods which are retained by means of spacers arranged along the fuel rods and guide tubes arranged between the fuel rods, the guide tubes being fixed to the spacers, a top nozzle and a bottom nozzle between which the guide tubes with the associated fuel rods are fixed, and wherein the guide tubes, at least adjacent said spacers, are provided with external threads in order to fix the spacers to the guide tubes.
A fuel assembly according to claim 12, wherein the threads of the spacers are arranged in sleeves joined to the spacers, are arranged to engage with the threads of the guide tubes.
Dependencies are inferred from the claim text.