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Nuclear waste disposal site
| Details |
Inventors: Mallory, Charles W.; Watts, Ralph E.; Sanner, Jr., William S.; Paladino, Joseph B.; Lilley, Arthur W.; Winston, Steven J.; Stricklin, Billy C.; Razor, John E.;
Assignee: Westinghouse Electric Corp. (Pittsburgh, PA)
Primary Examiner: Nelson; Peter A.
Assistant Examiner: Locker; Howard J.
Attorney, Agent or Firm:
A land disposal site for the disposal of nuclear waste is disclosed which generally comprises a trench, a non-rigid, water-shedding cap formed from alluvium and silt which overlies this depression, and a solid array of waste-containing modules disposed in the trench for both encapsulating the waste and for supporting the non-rigid cap over the depression. The floor of the trench preferably includes a capillary barrier formed from a layer of gravel so that ground water will not seep up into the modules buried within the disposal site. The top surfaces of the modules are covered with a sloped layer of alluvium, which in turn is covered with another capillary barrier of gravel. This capillary barrier of gravel carries a sloped layer of silt which sheds running surface water and directs it into a pair of drains disposed on either side of the trench. The silt layer is capped with a final layer of graded rip-rap which protects it from wind and water erosion, and which forms a natural radiation and intrusion barrier. Finally, the modules disposed within the disposal site are preferably uniformly shaped, hexagonal prisms which are capable of being solidly packed into a structure which is flexibly conformable with any changes in shape of the trench brought about by seismic or other natural disturbances. |
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DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT With reference now to FIG.
1, wherein like reference numerals designate like components throughout all of the several figures, the packaging facility 1 of the system of the invention generally comprises four isolation walls 2a, 2b, 2c and 2d which enclose a remote handled waste packaging section 3 on the left side of the building, a module loading and transportation section 60 in the center of the building, and a contact handled waste section 85 on the right side of the building.
Both the remote and contact handled waste sections 3 and 85 include a drive-through 7 and 87, respectively.
At these drive-throughs 7 and 87, trucks 13 and 95 deliver remote and contact handled nuclear waste in relatively lightweight shipping containers (i.
e.
, liners, 55-gallon drums, and LSA containers) from remotely located waste generating sites for encapsulation into the relatively heavy, solidly packed modules 200.
In the preferred embodiment, the final disposal site 150 of the modules 200 packed by the packaging facility 1 is located in close proximity to the facility 1 in order to minimize the distance which the packed modules 200 (which may weigh over 30,000 pounds) must be transported.
At the outset, it should be noted that there are at least three major advantages associated with a facility surrounded by isolation walls which is remotely located from the waste-generating sites, yet is close to a final disposal site 150.
First, there is no need to transport the relatively heavy modules 200 to the waste generating site.
Second, the possibility of the waste-generating site from becoming contaminated from a packaging accident is eliminated.
Thirdly, the isolation walls 2a, 2b, 2c and 2d minimize the possibility of the disposal site 150 becoming contaminated from any packaging accidents.
Turning now to a more specific description of the remote-handled waste section 3 of the facility 1, this section 3 includes a driveway 9 having an entrance (not shown) and an exit 11 for receiving a delivery truck 13
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