FIELD: atomic power engineering.
SUBSTANCE: invention relates to atomic power engineering, namely, to fuel assemblies (FA) of VVER type nuclear reactors (VVER-440, VVER-1000, etc.). FA is equipped with an anti debris-filter (ADF) installed in the FA shanks. FA ADF consists of two plate-type filter elements arranged in a shank above each other, containing two groups of intercrossed straight plates forming along the fuel assembly axis a row of curvilinear channels of rectangular cross section for the heat carrier passage. Herewith the channels of the lower filter element are arranged at an angle to the FA longitudinal axis, while the channels of the upper filter element located between the lower filter element and the bearing grate are parallel to the FA axis.
EFFECT: technical result is increased efficiency of trapping debris-objects in the form of straight rods and flat objects of any length and low thickness.
4 cl, 6 dwg
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