FIELD: physics.
SUBSTANCE: invention concerns nuclear steam generators with preferred use of liquid lead-bismuth metal carrier in the primary coolant circuit. In-vessel radiation shield unit of the reactor includes boron carbide slugs encased in a box with a welded cap. The box with welded cap is not hermetic. A filter is installed in the upper part of the box. Compensators in the form of crimp stripes of stainless foil are laid between the box wall and boron carbide slugs.
EFFECT: reduced neutron and capture radiation in the reactor vessel and improved operational reliability.
3 dwg
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