Solid Radioactive Waste Strategy Report.pdf - UK EPR

EPR UK
N° NESH-G/2008/en/0123
REV. A PAGE 200 / 257
The waste packages will be stored in accordance with a predetermined storage plan. The
final storage position in the ISF is selected by the ISF operator as required under an
optimised storage concept.
12.4.3 Waste Package Handling
As the ISF will receive different packages during operations and decommissioning two
handling scenarios are considered:
· Handling of packages that can come within a shielded container;
· Handling of packages that are handled without shielding.
The waste packages are managed in the ISF in such way that at all times radiation protection
and protection of environment is assured. This is achieved by isolation of the ISF building by
means of shield walls, multiple barriers and the confinement of radioactive waste in
packages.
The truck bay of the ISF will be separated from the storage area by a concrete wall in order
to ensure proper shielding and minimal radiation exposure in the truck passage. For the
transfer of the waste packages to the storage position the truck will drive rearwards into the
unloading position and the bridge crane will be used to lift the waste packages over the top of
the wall.
The truck carrying the loaded and covered waste package in the transport container will
enter the ISF via the truck access. After opening the transport container the waste package
will be lifted using the appropriate grapple or spreader. If a shielded container is received a
traverse will be used.
The waste package will then be transferred using the bridge crane to the final destination.
The crane will be remotely operated and its progress visually monitored using cameras in the
control room. Only one waste package can be transported at the same time.
Waste packages that are received in shielded transport containers will be removed from the
truck and placed at the loading/unloading section above the concrete storage compartments.
Here personnel will release the lid of the shielded container and leave the area.
Once the area has been cleared, the crane will remove the shielding lid and place it in the lay
down area. If necessary the grapple will be installed to be able to handle the waste package.
The crane will remotely connect to the waste package and places it at the pre-determined
storage location.
After the waste package has been unhooked the crane will return and replace the lid on the
shielded container. Operations staff will then secure the lid and using the crane place the
empty shielded container on the truck.
If required the crane will also place a lid section or cover above the waste package storage
location until the next loading.