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| Bogie |
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Canister, transport, storage, monitoring, and retrieval system
| Details |
Inventors: Peterson, II, William Donald;
Assignee:
Primary Examiner: Wasil; Daniel D.
Assistant Examiner:
Attorney, Agent or Firm:
A conveyance system provides for storing, monitoring, and retrieving (multi-purpose) canisters "MPC" for intermediate storage of spent fuel rods from nuclear power plants. The system includes a shielded transport system, an access corridor shielded for radiation, a lifting transport conveyance, an elevation chase, a dry-pool, seismic bracing to support the canisters in storage, associated shielding to confine radiation to the dry-pool, and air manifold system for cooling, and facilities to add alternative liquid radiation shielding around the canisters in the dry pool. A RR-locomotive moves a RR-car having a radiation shielded transport container to communicate with a dry-pool access corridor. A bridge crane carries an "MPC" through the corridor to a vertical chase which accesses to the dry-pool. The bridge crane places the "MPC" at a cooling vent manifold. A seismic brace engages the "MPC" secure to the dry-pool wall. A configuration of radiation shielding confines emissions. An air manifold system enables convection air to cool the canisters. The system is operated from a remote control facility. Cask conditions are monitored, retrieved, collected, and reviewed an off-site date base. The dry-pool may be filled with water to provide additional radiation shielding. |
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DETAILED DESCRIPTION OF THE INVENTION After service in power plant nuclear reactor spent fuel rods 1 which can no longer heat to efficiently make steam are put into the power plants water storage pool 2 for about five years or more of further radioactive decay or heat reduction.
After time, clusters of the typically fourteen foot long spent fuel rods 1 are put into cylindrical canisters 3, "MPC"s 3, for transport and dry storage.
Fuel rods 1 are typically loaded into "MPC"s 3 under the pool water 2 where the canister 3 loading has the shielding of the water 2 during this operation.
"MPC" 3 is a term or name for a popular design called a multi-purpose-canister 3 where the "MPC" 3 is used for both the transport of the fuel rods 1 and storage of the fuel rods 1.
A proposed "MPC" 3 has shielding on its top to shield operators making its closure.
"MPC"s 3 are usually standing vertical, an exception is when they lay horizontal during transport.
For interplant transfer from the wet to the dry storage the inventors preferred design is to keep the "MPC" 3 vertical.
Loaded and sealed "MPC"s 3 are crane 4 lifted from the plant's water storage pool 2, carried through a shielded corridor 6, placed into a transporter 7 which rides on a RR-track 8 or roadway.
The transporter 7 has walls and floor with radiation shielding 9 to confine radiation when the transporter 7 is outside in the open 11 between the wet pool 2 storage and dry-pool 12 storage.
The "MPC" 3 containing transporter 7 enters the storage field area 13 which has radiation shielding 14 by either strategically placed panels 14, or storage casks 16 themselves, or the building 17 over the dry-pool which may be the primary shield for the entire storage site 13.
The transporter 7 enters on tracks 8 extending from the load out at the plant water pool 2.
At the field 13 or in the building 17 other tracks 18 carry a bridge crane 19 which picks an "MPC" 3 from the transporter 7.
Doors 21 in the transporter 7 shielding 9 allows a horizontal exodus of the "MPC" through a shielded corridor 22 to an entrance 23 of the dry-pool 24
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