FIELD: atomic physics.
SUBSTANCE: invention relates to the design of nuclear reactor fuel elements. A pressure chamber spring and fuel rod assembly has a spacer assembly attached to the lower end of a polished torsion spring. The spacer assembly has a substantially flat surface at its lower side which presses on the upper surface of upper fuel pellets, thereby distributing the spring load on the upper surface of the uppermost fuel pellet.
EFFECT: preventing fracturing of upper pellets of the fuel column.
12 cl, 9 dwg
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