FLOOR TILE FRAGMENT SHUTTING-OUT DEVICE FOR NUCLEAR POWER PLANT AND TRANSITION PLENUM

摘要

PROBLEM TO BE SOLVED: To provide a method and an apparatus for attenuating load of catching fragments on a sump strainer or a substituting sump strainer. SOLUTION: A flooring system for shutting out fragments includes a plurality of floor tiles (10) each comprising a plurality of tube frames (100) and a perforated top face (200) placed on the tube frames and shutting out fragments. The floor tiles may each include a plurality of the tube frames arranged in lines to constitute distributed suction zones for allowing inflow of a fluid into the interior of the tile and shutting out and catching fragments. A distribution path for the flow of the fluid reaching a transition plenum (20) can be formed in the inside of the tile of the flooring system. The flooring system may include the transition plenum for leading the path for the fluid from the tile to the sump sucked by a pump (80). COPYRIGHT: (C)2006,JPO&NCIPI