RADIATION AND HEAT PROTECTION FOR NUCLEAR REACTORS Russian patent published in 1995 - IPC

FIELD: radiation and heat protection. SUBSTANCE: roadways for pipelines of movable radiation-and-heat protection blocks are provided with a cone-shaped power insert which widens upward. The insert serves to release pressure. The narrow part of the insert is located behind the seam by which the pipeline is welded up to the reactor body. This makes it possible for preventing the radiation-and- heat protection system from being damaged in case of rupture of the pipeline wherever it occurs. For separating the movable blocks, the inserts are placed in a spaced relation to the pipelines. The blocks move with the aid of guides which are parallel to the axis of pipelines. EFFECT: higher reliability. 3 cl, 3 dwg