The present disclosure relates to a radioactive material reduction facility, including a containment, a boundary section provided inside the compartment to partition an inner space of the containment into a first space for accommodating a reactor coolant system and a second space formed between the first space and the containment, and surround the reactor coolant system to prevent radioactive material discharged from the reactor coolant system or a line connected to the reactor coolant system inside the first space from being directly discharged into the second space during an accident, an in-containment refueling water storage tank (IRWST) installed between the first space and the second space and formed to accommodate refueling water, and a first discharge line formed to guide the flow of steam and radioactive material formed in the first space inside the boundary section into the in-containment refueling water storage tank. Specifically, the radioactive material reduction facility according to the present disclosure may include a plurality of pools separated from each other, and the plurality of pools may include at least a first pool and a second pool, and the steam and the radioactive material may be discharged to the second pool through the first pool during an accident.

A system and method of clearing radioactive contamination from a surface is provided by means of a handheld device and a method of using the handheld device. The handheld device has a manual system which operates by pressing a button to spray radioactive wash on the surface. The handheld device also has an electrical system which operates by pressing a button to suction radioactive contamination from the surface. The function of this system is to clean the surface from radioactive contamination. The system of the handheld device consists of a suctioning part and a pump and functions by suctioning the radioactive contamination into a lead cylinder, from which it is easily disposed. A third component includes a gauge for detecting contamination before, during, and after the cleaning and suctioning processes of the handheld device.

A system and method of clearing radioactive contamination from a surface is provided by means of a handheld device and a method of using the handheld device. The handheld device has a manual system which operates by pressing a button to spray radioactive wash on the surface. The handheld device also has an electrical system which operates by pressing a button to suction radioactive contamination from the surface. The function of this system is to clean the surface from radioactive contamination. The system of the handheld device consists of a suctioning part and a pump and functions by suctioning the radioactive contamination into a lead cylinder, from which it is easily disposed. A third component includes a gauge for detecting contamination before, during, and after the cleaning and suctioning processes of the handheld device.

A radioactive sodium destruction facility includes a tank for storing liquid metallic sodium, located at a first level; a reaction vessel containing an aqueous solution; a sodium feed circuit comprising a sodium circulation member located at a second level higher than the first level, the circulation member having a suction in fluid communication with the tank and a discharge in fluid communication with the reaction vessel; an inert gas supply unit configured to supply the tank; a controller driving the sodium circulation member; and an inert gas supply unit configured to supply the tank; and a controller driving the supply unit to control a gas pressure in the tank, such that a pressure at the suction of the sodium circulation member is maintained within a predetermined range.

A radioactive sodium destruction facility includes a tank for storing liquid metallic sodium, located at a first level; a reaction vessel containing an aqueous solution; a sodium feed circuit comprising a sodium circulation member located at a second level higher than the first level, the circulation member having a suction in fluid communication with the tank and a discharge in fluid communication with the reaction vessel; an inert gas supply unit configured to supply the tank; a controller driving the sodium circulation member; and an inert gas supply unit configured to supply the tank; and a controller driving the supply unit to control a gas pressure in the tank, such that a pressure at the suction of the sodium circulation member is maintained within a predetermined range.

A modularized system for processing, storing and/or disposing of a hazardous waste material is described. In one exemplary embodiment, the modularized system includes a container configured to sealingly contain hazardous waste material; a first cell, the first cell comprising a first area for manipulating the container; and a second cell, the second cell comprising a second area for manipulating the container. The second cell is isolated from the first cell. The first cell is held at a first pressure and the second cell held at a second pressure, the first pressure being less than the second pressure. An interlock couples the first cell to the second cell. The first cell, second cell and interlock are configured to allow the container to be transferred from the first cell to the second cell while maintaining at least one seal between the first cell and the second cell.

A modularized system for processing, storing and/or disposing of a hazardous waste material is described. In one exemplary embodiment, the modularized system includes a container configured to sealingly contain hazardous waste material; a first cell, the first cell comprising a first area for manipulating the container; and a second cell, the second cell comprising a second area for manipulating the container. The second cell is isolated from the first cell. The first cell is held at a first pressure and the second cell held at a second pressure, the first pressure being less than the second pressure. An interlock couples the first cell to the second cell. The first cell, second cell and interlock are configured to allow the container to be transferred from the first cell to the second cell while maintaining at least one seal between the first cell and the second cell.

The present invention provides systems, methods and devices for storing and/or disposing of hazardous waste material such as calcined material. In certain embodiments, the system comprises a filling nozzle having a valve body having a distal end and an outer surface, the outer surface proximate the distal end being configured to sealingly and removeably couple to an inner surface of a filling port of the container. In certain embodiments, the method comprises (a) coupling an outer surface of a filling nozzle with an inner surface of a filling port of a container to form a first seal (b) adding hazardous waste material into the container (c) decoupling the filling port from the filling nozzle and (d) inserting a fill plug into the filling port, the fill plug forming a second seal with the inner surface of the filling port, the second seal being distally spaced from at least a portion of the first seal with respect to the container.

The present invention provides systems, methods and devices for storing and/or disposing of hazardous waste material such as calcined material. In certain embodiments, the system comprises a filling nozzle having a valve body having a distal end and an outer surface, the outer surface proximate the distal end being configured to sealingly and removeably couple to an inner surface of a filling port of the container. In certain embodiments, the method comprises (a) coupling an outer surface of a filling nozzle with an inner surface of a filling port of a container to form a first seal (b) adding hazardous waste material into the container (c) decoupling the filling port from the filling nozzle and (d) inserting a fill plug into the filling port, the fill plug forming a second seal with the inner surface of the filling port, the second seal being distally spaced from at least a portion of the first seal with respect to the container.

A container holds radioactive material. A sub-criticality controller protects the radioactive material from reaching a criticality from contact with the water. The sub-criticality controller includes a metallic composition having at least one metal component and at least one borate component bonded to the at least one metal component. The metallic composition forms borates when the metallic composition contacts the water.