A shipping container for highly enriched uranium (options)
(57) Abstract:A shipping container for highly enriched uranium. The container has a fitted lid drum located therein a container equipped fixed on the cover. Between the container and the drum is of insulating material. Insulation material made in the form of consecutive first layer of fibreboard, the first layer of plywood, open at both ends of the cylinder fibreboard placed between the container and the drum, a second layer of plywood and a second layer of fibreboard. The first plywood layer and the first layer of fibreboard cover the bottom of the drum. In a container made the pilot hole. 2 C. and 8 C.p. f-crystals, 2 Il. A shipping container for the transport and storage of highly enriched uranium.Well-known a shipping container (US patent, 4147933, G 21 F 5/00, 1979), which contains the drum, located in the inner container and insulating material located between the drum and the inner container. Known container does not provide the necessary security during the transportation of highly enriched uranium.The technology is highly enriched uranium.A shipping container for highly enriched uranium contains a drum with a lid, which is a container equipped fixed on the cover, and insulation material located between the drum and the container. Insulation material made in the form of consecutive first layer of fibreboard, the first layer of plywood, open at both ends of the cylinder fibreboard placed between the container and the drum, the second layer of plywood and a second layer of fibreboard, with the first layer of fibreboard and the first layer of plywood to cover the bottom of the drum and the container holds the pilot hole. The transport container may further comprise a bracket located on the inner container. The inner container can be made of austenitic stainless steel. The inner container may contain a device for securing the cover to the inner container by bolts and o-ring located in the groove made in the lid. The pilot hole can be made in the cover between the two grooves. Cover of the inner container may be provided with a damping element located in the center of the cover. OBrien side view in section with a partial tear-out image; in Fig. 2 is a side view in section of the inner container for the image.The transport container 10 includes a drum 12, the inner container 14, a sealing cover of the inner container 16 and means 18 for securing the cover 16 to the inner container 14. Strip the insulation material 22 consists of a first layer of fibreboard 24, is designed so that it covers the bottom of the drum, the first layer of plywood 26 having dimensions enabling it to be placed in the dryer on top of a layer of fibreboard, cylinder 28 fibreboard, open on both sides. The internal dimensions of the cylinder such that the inner container 14 fits tightly into him. The second plywood layer 30 is placed on top of the cylinder fibreboard, the second layer of fibreboard 32 is located on the top layer of plywood. The drum is fitted with a cover 34, closing it firmly. The inner container 14, shown in Fig. 2, provided with flanges 38. In the sealing cover 16 made the pilot hole 36, to allow inspection before every shipment. The means 18 for securing the cover 16 to the inner container 14 and the formation of an airtight seal between them is a ring 42, to the s 50. In a preferred embodiment, the circumference of the flange 38 are eight holes with threads 46, and the cover 16 has corresponding holes 48 for securing the cover 16 by bolts to the inner container 14. Cover 16 is equipped located in the middle of the damping element 41 that is placed inside the inner container 14 to 3 mm (preferred value). In a preferred embodiment, the cover 16 is provided with two annular grooves 44. The sealing ring 42 is fixed in the groove 44 so that between the cover 16 and the inner container 14 is formed seal when attaching the cover 16 by bolts to the inner container. The pilot hole 36 forms a passage through the cover 16, which is located between the sealing rings and allows you to check for leaks after closing the lid 16 on the container. The o-ring closest to the inner part forms a primary seal. The cover 16 is a bracket manipulation 52, which is the remote manipulation of the container 14 when it is loaded and unloaded from the drum.Transported highly enriched uranium may be in the form of solid particles, granules, tablets, paraskara bolts the cover 16 so the pressure on the sealing ring creates a tight seal between the cover 16 and the container 14. Then the locking washer 54 installed between the heads of the bolts and the cover 16, is bent upward so that the bolts 50 does not come loose during transport. Then to the bracket 52 for manipulating attach lifting equipment designed for remote lifting to lift and set the container 14 in the drum 12, which is lined inside with insulating material. During transport pilot hole 36 is closed. 1. A shipping container for highly enriched uranium, containing provided with a cover drum located therein a container equipped fixed on the lid, and the container is separated from the drum of insulating material, wherein the insulating material is made in the form of consecutive first layer of fibreboard, the first layer of plywood, open at both ends of the cylinder fibreboard placed between the container and the drum, the second layer of plywood and a second layer of fibreboard, with the first layer of fibreboard and the first layer of plywood to cover the bottom of the drum, and in the container in which is located the bracket.3. The container under item 1, characterized in that the inner container is made of austenitic stainless steel.4. The container under item 1, characterized in that the inner container contains a device for securing the cover to the inner container by bolts and o-ring located in the groove made in the lid.5. The container under item 1, characterized in that the pilot hole made in the lid.6. A container for highly enriched uranium, containing provided with a cover drum located therein a container equipped fixed on the lid, and the container is separated from the drum of insulating material, wherein the insulating material is made in the form of sequentially located layer of fibreboard, the first layer of plywood, open at both ends of the cylinder fibreboard placed between the container and the drum, the second layer of plywood and a second layer of fibreboard, with the first layer of fibreboard and the first layer of plywood to cover the bottom of the drum, container control orifice, and in the lid of the inner container are two sealing rings that are included in separate grooves.8. The container under item 6, characterized in that the pilot hole made in the lid.9. The container under item 8, wherein the pilot hole is made between the rings.10. The container under item 8, characterized in that the cover is provided with a damping element.
FIELD: safety facilities for handling radioactive materials.
SUBSTANCE: proposed internal container designed for long-time storage and transport of high-radioactivity materials such as plutonium dioxide has container body closed with sealed cover and specified-volume charging box placed in this body and provided with its respective cover. Container body has cylindrical passage for charging box that mounts additional internal cover provided with gas filtering device and hermetically installed relative to its surface for axial displacement. External cover of container body is provided with shut-off valve accommodating gas filtering device installed therein between inner space of container and valve seat. Such mechanical design of container enables reducing irreparable loss of plutonium during its long-time storage and transport.
EFFECT: enhanced safety and reliability , enlarged functional capabilities of container.
7 cl, 2 dwg
FIELD: handling radioactive wastes.
SUBSTANCE: proposed method for nuclear fuel storage in container includes introduction of nuclear fuel in fuel collector, as well as preparation of formwork to receive concrete body and installation of fuel collector into formwork. Formwork is immersed in tank and concrete is placed in immersed formwork to form concrete housing. Formwork with concrete housing formed therein is extracted from tank. System for manufacturing nuclear fuel storage container and for holding fuel in fuel collector installed in concrete housing that forms part of storage container has water tank. In addition it has tools for assembling formwork for storage container concrete housing and facilities for conveying formwork and fuel collector to water tank. It also has facilities for introducing nuclear fuel in fuel collector, facilities for concrete placement in formwork, and those for removing formwork from water tank. Nuclear fuel storage method includes piling of containers so that their central channels are aligned and held open for intercommunication. Fluid cooling agent is supplied to bottom end of central channel in lowermost storage container and discharged from top end of central channel in uppermost storage container.
EFFECT: enhanced reliability of radioactive waste isolation.
25 cl, 7 dwg
FIELD: storage of hazardous materials.
SUBSTANCE: proposed device for keeping in storage hazardous materials such as spent radioactive nuclear fuel has cylindrical concrete housing accommodating three-dimensional pre-stressed hardware and axially elongated hazardous-material storage area. Pre-stressed hardware includes hardware fittings spirally passed about storage area and disposed in concrete housing close to outer surface.
EFFECT: enhanced reliability of hazardous material storage.
7 cl, 8 dwg
FIELD: shipment and storage of highly active wastes.
SUBSTANCE: proposed container for transport and dry storage of spent nuclear fuel has hermetically sealed storage tank and can holding spent nuclear fuel. In addition, it has external steel-reinforced concrete casing with outer and inner metal shells and bottom, cooling ducts, and fixing dampers. Hermetically sealed tank is provided with transport ring that holds shell in position relative to longitudinal axis of casing and with three detachable lids. It is also provided with dampers disposed over entire perimeter of inner cylindrical shell that function to lock cylindrical shell on lid and outer steel-reinforced concrete casing and to transfer heat therefrom. Cooling system is designed so that cooling air flows through cylindrical gap between outer surface of tank and inner surface of external steel-reinforced concrete casing over cooling ducts.
EFFECT: enhanced operating reliability of container.
5 cl, 4 dwg
FIELD: handling spent nuclear fuel.
SUBSTANCE: proposed module designed for storage of spent nuclear fuel has tight case with inner space to receive spent nuclear fuel. Module is provided with ring made of solid ferromagnetic material possessing magnetocaloric properties. Ring is provided with drive and is free to rotate about its axis. It is disposed so that part of this ring is inside module in immediate proximity of tight tank holding spent nuclear fuel. Other part of ring is placed in constant magnetic field outside of module and can be cooled.
EFFECT: enhanced safety of spent nuclear fuel dry storage.
1 cl, 2 dwg
FIELD: nuclear engineering.
SUBSTANCE: proposed device for storage and/or transport of spent nuclear fuel has housing and cover forming inner space for holding spent nuclear fuel. Inner space is divided by means of partitions into compartments, each compartment being meant to receive spent fuel assembly. Each compartment accommodates two tanks holding metal hydride or intermetallic compound. These tanks are provided with channels pressurized with respect to inner space of device which are used to discharge hydrogen produced due to heat released by fuel assembly. Hydrogen outlet channels are designed for charging metal hydride through them and are provided with closing valves.
EFFECT: enhanced reliability of spent nuclear fuel storage and its safety in transit.
1 cl, 3 dwg
FIELD: transport and storage of spent nuclear fuel.
SUBSTANCE: proposed method includes placement of fuel assemblies in transport package incorporating container and split damping casing designed so as to minimize lift of container when inserting it in split damping casing. Transport package is conveyed to storage place where container is freed of casing, whereupon spent fuel assemblies are kept in storage place. In the process spent fuel assemblies are first placed in container and then the latter is inserted in vertical position into split damping casing made in the form of removable drum with butt-end covering and base that functions as end lid of this drum. Charged container is installed on base, covered on top with removable drum, and the latter is fastened to base. Then split damping casing is secured to container, whereupon transport package is conveyed in transport position to storage place.
EFFECT: enhanced reliability of storage and transportation.
6 cl, 5 dwg
FIELD: nuclear engineering.
SUBSTANCE: proposed method includes loading spent fuel assemblies in metal-concrete container, conveying the latter to intermediate storage site, and holding it on storage sire. Shipping unit for conveying spent fuel assemblies to intermediate storage site has flat-car for carrying vertically mounted container holding spent fuel assemblies. Container is provided with external removable circular supporting member engageable with mating supporting surface of flat-car frame and means for locking container relative to mentioned frame. Shipping unit is provided with jacks for lifting the frame to load spent fuel assemblies in container. Side surface of container body has rigging members in the form of seats on its top and bottom ends. Bottom end of container is installed inside mentioned circular supporting member. Container locking means include radially disposed submersible adjustable stops.
EFFECT: enhanced reliability and safety of proposed method and device.
4 cl, 8 dwg
FIELD: storage and transportation of used nuclear fuel.
SUBSTANCE: metal-concrete container for transportation and/or storage of used assemblies of fuel elements of nuclear reactors has case with bottom, internal protection air-tight cap, edge damping members. Casing with central cell is inserted inside cavity of case. Peripheral cells are disposed around central cell for mounting housings with used assemblies of fuel elements. Peripheral cells are made in form of tubular members that are mounted to have spaces in relation to internal protection air-tight case and bottom of case. Casing has longitudinal rod members disposed around circle in relation to central cell of casing. Container has first and second sheet members which are mounted along height of case and are connected for disconnection by means of longitudinal rods. Edge damping members are made in form spring-shaped members and they are mounted onto internal protection air-tight cap each in opposite to corresponding cell of casing for interaction with housing under normal conditions of exploitation of metal-concrete container.
EFFECT: higher safety of handling of loaded container.
6 cl, 7 dwg
FIELD: storage and transportation of spent nuclear fuel.
SUBSTANCE: proposed metal-concrete container for transportation and/or storage of nuclear-reactor spent fuel assemblies has housing with bottom, internal pressurizing safety cover, hood inserted into housing and provided with cells to receive boxes with spent fuel assemblies. Container also has damping members engageable with cover on inner surface end, with housing bottom, and with housing internal wall. Hood is installed within housing in a space relation to housing internal wall. Side damping members are installed between the latter and hood. Each damping member is made in the form of longitudinal rod passed through holes in respective first and second sheet members installed throughout container height on internal wall of housing and on hood and disposed in parallel with housing bottom.
EFFECT: enhanced reliability of spent nuclear fuel storage.
6 cl, 5 dwg