VINYL HOUSE TYPE FILTER MOUNTED ON LOWER FIXING BODY OF NUCLEAR FUEL ASSEMBLY

摘要

PURPOSE: A vinyl house type filter is provided to prevent damages of nuclear fuel rod, while achieving improved productivity. CONSTITUTION: A nuclear fuel assembly comprises an upper fixing body, a guide pipe(2), a nuclear fuel rod, a support grid and a lower fixing body. A filter(F) removes foreign substances passing through a coolant flow channel of the lower fixing body and flowing together with the coolant. A plurality of flow channels(9,9') having a width of 1mm are formed on a vinyl house-shaped steel plate which is mounted on a flow channel plate of the lower fixing body where the coolant flow channel and a guide pipe connection portion are perforated.