JP2015215288A5 - - Google Patents

Claims (17)

  A base part, a first work arm having a cutting tool and a second work arm having a gripping tool provided on the base part, and a lower end part attached to the base part and disposed above the base part, and an upper end A fuel debris retrieval device comprising: a cylindrical expansion / contraction seal member having a fixing member attached to a portion thereof.   A storage container holding member that holds a storage container that is formed in the side wall with an opening formed below the base portion and attached to the base portion is attached to the base portion and extends downward from the base portion. The fuel debris retrieval device according to claim 1. The fuel debris retrieval device according to claim 2, wherein an unloading container that covers an upper portion of the storage container holding member is disposed above the base portion, and the unloading container is detachably attached to the base portion .   The fuel debris retrieval device according to claim 3, wherein a storage container moving device that moves the storage container in a vertical direction is attached in the carry-out container.   3. The fuel debris retrieval device according to claim 2, wherein a shutter member that opens and closes a passage formed in the storage container holding member and through which the storage container passes is attached to the base portion so as to be movable in a horizontal direction.   A pivot table attached to the base portion so as to be pivotable; the first work arm and the second work arm are attached to the pivot table; and the storage container holding member is attached to the pivot table and The fuel debris retrieval device according to claim 2, which extends downward from the swivel table.   The fuel debris retrieval device according to claim 6, wherein an unloading container that covers an upper portion of the storage container holding member is disposed above the turning table, and the unloading container is detachably attached to the turning table.   A first cylindrical portion and a second cylindrical portion that are attached to the base portion through the base portion and have through holes formed therein, respectively, and the first working arm is formed in the through hole of the first cylindrical portion. A plurality of rotatable sealing plates that open when inserted and close when the first working arm is pulled out from the through hole of the first cylindrical portion, are provided on the lower end surface of the first cylindrical portion When the second working arm is inserted into the through hole of the second cylindrical portion, the second working arm is pulled out from the through hole of the second cylindrical portion. 2. The fuel debris retrieval device according to claim 1, further comprising a second sealing device provided on a lower end surface of the second cylindrical portion, wherein the second sealing device has a plurality of rotatable sealing plates that are sometimes closed.   A base portion, a first working arm having a cutting tool and a second working arm having a gripping tool, a cylindrical member attached to the base portion and extending upward; and a lower end portion of the base portion. A metal cylindrical seal member that is attached to the upper portion of the base portion and is connected to an upper end of the cylindrical seal member and extends upward, and the cylinder located below. A plurality of first seals attached to a ring-shaped fixing member having a holding member for holding a ring member provided in the seal member and arranged to surround the cylindrical seal member and attached to the upper end of the reactor pressure vessel A lifting device and a holding member for holding a ring member provided on the other cylindrical sealing member located above, and is disposed so as to surround the cylindrical sealing member. Fuel debris extraction apparatus characterized by comprising a plurality of second sealing lifting device attached to the fixed member of the ring-shaped.   A first elevating device turning mechanism for rotating the first seal elevating device within a predetermined angle range is attached to the fixing member for each of the first seal elevating devices, and rotates the second seal elevating device within a predetermined angle range. The fuel debris retrieval device according to claim 9, wherein a second lifting device turning mechanism is attached to the fixing member for each second seal lifting device. A fuel debris retrieval method for retrieving fuel debris from a reactor pressure vessel using the fuel debris retrieval device according to claim 1,
The fixing member is attached in a state where the fixing member is sealed to the flange surface of the upper end portion of the reactor pressure vessel,
Lowering the base and placing it in the reactor pressure vessel;
A fuel debris retrieval method, characterized in that the fuel debris present in the reactor pressure vessel is cut using the cutting tool of the first work arm. A storage container holding member for holding a storage container having an opening formed in a side wall below the base portion and disposed therein is attached to the base portion and extends downward from the base portion. ,
The fuel debris retrieval device according to claim 11, wherein the fuel debris cut piece cut by the cutting tool is held by the gripping tool of the second working arm and stored in the storage container in the storage container holding member. Method. A carry-out container that covers the storage container holding member is disposed above the base part, and the carry-out container is detachably attached to the base part ,
The fuel according to claim 12, wherein the storage container storing the cut pieces is transferred from the storage container holding member into the carry-out container, and the discharge container storing the storage container is taken out from the reactor pressure vessel. Debris retrieval method.   The storage container is transferred from the storage container holding member into the carry-out container using a storage container transfer device provided in the carry-out container, and the discharge container is taken out from the reactor pressure vessel. 14. The method for removing fuel debris according to claim 13, wherein the storage container is held in the storage container transfer device. After the container has been transferred to the unloading container from the container holding member, the transportable out passage which is connected to the container of the container holding the member, according to claim 13 which is blocked by the shutter member To take out fuel debris. A fuel debris retrieval method for retrieving fuel debris from a reactor pressure vessel using the fuel debris retrieval device according to claim 9,
The fixing member is attached in a state where the fixing member is sealed to the flange surface of the upper end portion of the reactor pressure vessel,
A plurality of cylindrical seal members are sequentially connected to an upper end of the cylindrical seal member positioned above, and the base portion is lowered in the reactor pressure vessel to dispose the base portion in the reactor pressure vessel,
A fuel debris retrieval method, characterized in that the fuel debris present in the reactor pressure vessel is cut using the cutting tool of the first work arm. A first elevating device turning mechanism for rotating the first seal elevating device within a predetermined angle range is attached to the fixing member for each of the first seal elevating devices, and rotates the second seal elevating device within a predetermined angle range. A second lifting device turning mechanism is attached to the fixing member for each second seal lifting device;
In the state where the ring member of the first cylindrical seal member that is the uppermost cylindrical seal member is held by the holding members of the plurality of first seal elevating devices, The second cylindrical seal member, which is another cylindrical seal member, is placed on the first cylindrical seal member and the second cylindrical seal member,
Lowering the first cylindrical seal member together with the second cylindrical seal member connected by the first seal lifting device;
The ring member of the second cylindrical seal member is held by the holding members of the plurality of second seal lifting devices,
Thereafter, the first lifting / lowering device turning mechanism is driven to rotate each of the plurality of first seal lifting / lowering devices, and the first cylinder is formed by the holding member of each of the plurality of first seal lifting / lowering devices. The fuel debris retrieval method according to claim 16, wherein the holding of the ring member of the seal member is released.