Reinforced concrete container for the disposal of solid radioactive waste
(57) Abstract:Usage: in nuclear engineering for the disposal and transportation of solid radioactive waste. The inventive container includes a housing, the upper part of which is made with a hollow under the lid, sealed the lid and lifting the nodes located on the housing. The walls of the cover and the side walls of the grooves of the housing have a wedge-shaped protrusions shifted by step relative to each other, and between the projections made clearance for filling sealing binder. The walls of the housing and cover are made of a thickness not less than 200 mm, while the body is made in the form of a parallelepiped with rounded corners. 2 Il. The invention relates to nuclear energy, in particular to containers for disposal and transportation of solid radioactive waste.Known reinforced concrete container  contains a cylindrical housing and a sealed lid, and sealing in the area of contact of the cover with the body through heat fusible filler fuel elements with its subsequent cooling after installing the cover, which pass the refrigerant through the cooling pipes.Also known reinforced concrete container  comprising a housing, upper part of which is made with a hollow under the lid, sealed the lid and lifting the nodes located on the body.This container also does not provide a reliable sealing of the cover and the housing, and the hull form is not an efficient use of space repositories for radioactive waste in containers.The invention allows to significantly simplify the design of the housing and the cover and to ensure reliable sealing of the container in the zone of contact between the housing and cover. In addition, the proposed design prevents damage to the walls of the container when it is moving and transportation and with maximum efficiency to use the area of warehouse premises in the storage of radioactive waste.The walls of the cover and the side walls of the grooves of the housing have a wedge-shaped protrusions shifted by step relative to each other, and between the projections made clearance for filling sealing binder, and the walls of the housing and cover are made of a thickness of 200 mm, while the body is made in the form of a parallelepiped with rounded corners.On paediatric waste includes a housing 1 with an airtight cover 2. The walls of the housing and cover is made of heavy armocement reinforced several horizontal layers of wire reinforcement and vertical grids forming cells. The wall thickness of the housing 1, the bottom and top 2 should be not less than 200 mm, which provides radiation safety. In the upper part of the housing 1 has a recess under the cover 2. The walls of the recess of the casing and the wall of the cover 2 are wedge-shaped projections 3 and 4, respectively. The projections 3 of the deepening housing offset from the protrusions 4 covers on the step height. Between the projections 3 and 4 made the gap 5, which is filled with a sealing binder solution expanding the alumina cement. The body 1 of the container is made in the form of a parallelepiped with rounded corners, which allows the most efficient use of the storage area at the disposal of containers with radioactive waste and the corners rounded protects the container from damage when it is moving and transportation does not occur chipping of corners with bumps and falls. For ease of handling and transportation of the container on its walls made lifting nodes 6.Radioactive waste, prednaznatchena cover 2 and the gap 5 between the wedge-shaped projections 3 and 4 is filled with a solution of an expanding alumina cement, which after hardening hermetically connects the cover 2 with the body 1. In this way the container can be moved, transported and stored.Thus, the proposed reinforced concrete container for storing solid radioactive waste has a simple structure in the coupling zone of the cover with the chassis, which simplifies its manufacture and sealing, filling the gap between the cover and the recess in the housing sealing binder does not require additional costs, and execution of the shell in the form of a parallelepiped with rounded corners protects it from damage and allows you to effectively use the space at disposal. Reinforced CONCRETE CONTAINER FOR the DISPOSAL of SOLID RADIOACTIVE WASTE, comprising a housing, upper part of which is made with a hollow under the lid, sealed the lid and lifting the nodes located on the housing, characterized in that the wall of the cover and the side walls of the grooves of the housing have a wedge-shaped protrusions shifted by step relatively to each other, and between the projections made clearance for filling sealing binder, and the walls of the housing and cover are made of a thickness not less than 200 mm, and the building
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