9results about "Facility decommissioning" patented technology

Disclosed is a method for dismantling a D2O tank of a heavy water reactor installed on an inner wall of a containment building and surrounded by a concrete structure, the method including cutting and opening a front surface of the concrete structure so as to dismantle the D2O tank, descending the D2O Tank by using an dedicated dismantling apparatus, and taking the D2O tank out of the containment building by using a crane, and a dismantling apparatus.

An apparatus for cutting a curved wall of a structure, of the present invention, may comprise; a guide rail mounted on a curved wall of a structure; a chain mounted on the guide rail; a support plate supported by the guide rail so as to be movable by means of a plurality of rollers; a body case coupled to the support plate; a sprocket mounted at the body case so as to rotate while engaged with the chain; a driving motor mounted in the body case so as to rotate the sprocket; a cutting blade rotatably mounted at the front of the body case; and cutting motor mounted in the body case so as to rotate the cutting blade.

Disclosed is a method for dismantling metal equipment of a heat transport system in a containment building at a nuclear power plant, the metal equipment including a heat transport pump, a steam generator, a pressurizer, a condenser, and a D2O tank, including: a first dismantling step of dismantling the heat transport pump; a second dismantling step of dismantling the steam generator after the first dismantling step; a third dismantling step of dismantling the pressurizer after the second dismantling step; and a fourth dismantling step of dismantling the condenser and the D2O tank after the third dismantling step.

A nuclear instrument removal system (NIRS) for use with processing a nuclear instrument is provided. The NIRS includes a control system and an instrument processing system configured for use with the control system. The instrument processing system includes a counter module configured to receive the nuclear instrument, a feed and cut module removably coupled to the counter module and configured to receive the nuclear instrument after passing through the counter module, and a spool module removably coupled to the feed and cut module and configured to be mounted to a cask assembly. The spool module includes a spool canister and a drive shaft associated with the canister. The drive shaft is configured to rotate about an axis in order to spool a cold portion of the nuclear instrument within the canister.

An apparatus comprises a cell with one or more wall panels, a floor, a ceiling, and one or more openings. The cell contains one or more components comprising a dexterous manipulator with at least one articulating robotic arm and a manipulator carriage. The manipulator carriage is coupled to rails and may traverse the cell length. The cell contains a boom with a proximal end, a distal end, and articulating links comprising two or more segments that fold back onto each other within the cell or extend partially or fully through one of the one or more cell openings. The cell also contains a boom carriage (coupled to the proximal end of the boom), boom rails, and a base. The boom carriage may traverse the boom rails in the cell or remain fixed to the base. One or more end effectors are coupled to the distal end of the boom.

The invention concerns a method for removing a vessel (10) from a cavity (30), the vessel (10) comprising a vessel shell (12) with a peripheral wall (14). The method comprises the following steps: a) arranging at least one robot system (36) on an upper edge (18) of the peripheral wall (14), b) cutting a plurality of segments (44) from a first horizontal portion (22A) of the peripheral wall (14) by means of a cutting tool (38) of the robot system (36) and removing the cut segments (44), c) arranging the robot system (36) on the upper edge (24B-D) of a next horizontal portion (22B-D) of the vessel shell (14), and d) repeating the second step (102) and the third step (103) for each horizontal portions (22B-D) of the peripheral wall (14).

The present invention relates to a method for cutting a nuclear reactor and inserting cut materials, the method comprising the steps of: preparing cut materials by cutting a nuclear reactor through a plurality of processes; classifying the cut materials into a plurality of stack shapes; and inserting the cut materials into a packaging container according to the stack shapes, wherein the packaging container includes an external container, an internal container and a cover, and the inserting step includes the steps of: preparing the external container; accommodating the internal container in the external container; and mounting the cover on the upper portion of the internal container.