NUCLEAR REACTOR FUEL ELEMENT Russian patent published in 2007 - IPC G21C3/30

Abstract RU 2302673 C2

FIELD: nuclear engineering; nuclear reactor fuel elements.

SUBSTANCE: proposed nuclear reactor fuel element has nuclear fuel filled can and plugs. The latter are attached to butt-ends of can through welded joint. One of joints is made by resistance-butt welding with plug deepened in can wall so that changed-structure region is formed in plug and can; greatest part extruded from metal-to-dross joint accommodating region with maximal structural changes is disposed on external side of weld to form graded can-to-plug joint. Inner-surface sections of can are supported on internal part of weld by plug surface formed in the course of its displacement. Changed-structure region of can is between butt-end of can and weld.

EFFECT: enhanced mechanical strength of structure and corrosion resistance of weld, improved hydraulic characteristics of fuel element.

4 cl, 2 dwg

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RU 2 302 673 C2

Authors

Kislitskij Aleksandr Antonovich

Dates

2007-07-10—Published

2005-09-27—Filed