The invention relates to a nuclear facility pool cleaning device having a floating platform, capable of floating in water, having buoyancy bodies; a drive device for displacing the floating platform on the surface of a water-filled nuclear facility pool to be cleaned; a winching device connected to the floating platform; a pump which is winchable vertically by the winching device and has a vacuum hose, connected thereto at its first end, for cleaning the bottom of the nuclear facility pool; a remote control device for remotely operating at least the drive device and the winching device; an optional stationary external storage tank; and wherein the second end of the vacuum hose preferably leads at least indirectly into the stationary external storage tank.

A method of handling spent nuclear fuel assemblies immerses the spent nuclear fuel assemblies in water in a relatively short time period when compared to traditional methods. A spent nuclear fuel assembly is removed from a nuclear reactor, an inert gas is applied to the fuel assembly, moisture content in the inert gas is gradually increased as it is applied to the fuel assembly, and the fuel assembly is immersed in water. The fuel assembly is immersed relatively quickly, within about 2 hours or less, which improves safety and allows normal processing and handling equipment to care for the fuel assembly. The fuel assembly may then be loaded into a cask for long-term storage and/or disposal.

A method of handling spent nuclear fuel assemblies immerses the spent nuclear fuel assemblies in water in a relatively short time period when compared to traditional methods. A spent nuclear fuel assembly is removed from a nuclear reactor, an inert gas is applied to the fuel assembly, moisture content in the inert gas is gradually increased as it is applied to the fuel assembly, and the fuel assembly is immersed in water. The fuel assembly is immersed relatively quickly, within about 2 hours or less, which improves safety and allows normal processing and handling equipment to care for the fuel assembly. The fuel assembly may then be loaded into a cask for long-term storage and/or disposal.

A basket (1) for transport and/or storage packaging of radioactive materials. The basket (1) comprises an internal partition (6, 8) having at least one wall (82, 84), and a peripheral partition (10). The wall (82, 84) has two opposing lateral surfaces (81, 85). The peripheral partition (10) interacts with the internal partition (6, 8) to define cells for housing the radioactive materials. The peripheral partition (10) comprises a housing accommodating one end of the at least one wall (82, 84). The housing comprises two opposing lateral housing surfaces (102, 106) and a bottom (104) bringing together the two lateral surfaces (102, 106) of the housing. According to the invention, the basket (1) comprises a tightening element configured to press at least one of the lateral surfaces (81, 85) of the wall against at least one of the lateral surfaces (102, 106) of the housing.

A basket (1) for transport and/or storage packaging of radioactive materials. The basket (1) comprises an internal partition (6, 8) having at least one wall (82, 84), and a peripheral partition (10). The wall (82, 84) has two opposing lateral surfaces (81, 85). The peripheral partition (10) interacts with the internal partition (6, 8) to define cells for housing the radioactive materials. The peripheral partition (10) comprises a housing accommodating one end of the at least one wall (82, 84). The housing comprises two opposing lateral housing surfaces (102, 106) and a bottom (104) bringing together the two lateral surfaces (102, 106) of the housing. According to the invention, the basket (1) comprises a tightening element configured to press at least one of the lateral surfaces (81, 85) of the wall against at least one of the lateral surfaces (102, 106) of the housing.

An apparatus for supporting radioactive fuel assemblies, such as spent nuclear fuel. In one aspect, the invention is an apparatus, which can be in the form of a fuel basket, fuel rack, or the like, in which polygonal storage tubes are used not only for their internal cells but are also strategically patterned to create resultant cells with their outside surfaces.

An apparatus for supporting radioactive fuel assemblies, such as spent nuclear fuel. In one aspect, the invention is an apparatus, which can be in the form of a fuel basket, fuel rack, or the like, in which polygonal storage tubes are used not only for their internal cells but are also strategically patterned to create resultant cells with their outside surfaces.

A reactor building capable of shortening a time required for spent fuel removal while protecting spent fuel stored in a spent fuel pool from a falling object is provided. The reactor building includes a spent fuel pool 5, a spent fuel rack 6 located in the spent fuel pool 5 and configured to store spent fuel 14, and a protection slab 8 located above the spent fuel rack 6.

A reactor building capable of shortening a time required for spent fuel removal while protecting spent fuel stored in a spent fuel pool from a falling object is provided. The reactor building includes a spent fuel pool 5, a spent fuel rack 6 located in the spent fuel pool 5 and configured to store spent fuel 14, and a protection slab 8 located above the spent fuel rack 6.

Disclosed are a system and method for preventing and monitoring a leakage of water from a tank liner at a storage tank having: a concrete reservoir; the tank liner made up of a wall liner that is formed by coupling a plurality of first panels and is attached to an inner wall of the concrete reservoir, and a floor liner that is formed by coupling a plurality of second panels, is attached to a floor of the concrete reservoir, and is coupled to the wall liner by welding; a leaking water collecting plate formed by welding a plurality of third panels and inserted between the floor liner and the floor of the concrete reservoir; and an edge leaking water collecting channel buried in an edge of the storage tank and configured to collect leaking water discharged between the floor liner and the leaking water collecting plate.