Modular fuel element applicable to different nuclear power station with cooling pipeline

Application Number: 00108235
Application Date: 2000.04.30
Publication Number: 1272674
Publication Date: 2000.11.08
Priority Information: 1999/5/3 AR P99-01-02054
International: G21C3/30
Applicant(s) Name: Argentina State Atomic Energy Commission
Inventor(s) Name: P. C. Froridot;R. O. Cyrimerlo;J. E. Paugalo
Patent Agency Code: 72001
Patent Agent: zeng xiangling
Abstract The present invention relates to a modular nuclear fuel element, which can be adapted by an assembly system allowing it to be used in different nuclear power plants with horizontal and vertical cooling channels. The module is a cluster of parallel fuel rods mounted as circular concentric crowns and supported by a structural system. It has a single diameter fuel rod array where the ratio of the heat transfer area to the transverse rod area is higher than 330. It also has self-supporting fuel element spacer grids, which are collapsible sheaths attached to them with fewer than 13 welded end stoppers, The number of these fuel rods is higher than 43. The length of the module is the largest compatible length with the refuelling machine, to reduce the hydraulic restrictions caused by structural endings, and to be able to balance this by providing a fuel element having a larger cooling area.