Solid Radioactive Waste Strategy Report.pdf - UK EPR
Solid Radioactive Waste Strategy Report.pdf - UK EPR
Solid Radioactive Waste Strategy Report.pdf - UK EPR
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<strong>EPR</strong> <strong>UK</strong><br />
N° NESH-G/2008/en/0123<br />
REV. A PAGE 199 / 257<br />
12.3.2.2 Seismic Event<br />
The waste packages and stacking regimes are designed such that under design basis<br />
earthquake conditions the stability of the packages stacked on top of each other is not<br />
endangered. This robustness may be provided by means of fixed waste package support<br />
columns.<br />
The ISF building will be seismically qualified in order that it maintains a containment function<br />
during and after a seismic event. The ventilation system must close and maintain its<br />
integrity.<br />
12.3.2.3 Flooding<br />
The whole site housing the ISF will be elevated above the groundwater table and the periodic<br />
high flood level to eliminate the risk of water intrusion. The foundation slab will be designed<br />
to prevent water entering the building and concrete storage compartments.<br />
12.3.2.4 Aircraft Crash<br />
The frequency of aircraft crash and potential consequences on the ISF will need to be<br />
analysed.<br />
12.3.2.5 Missiles and Explosion Pressure Waves<br />
There is the potential for impacts to the ISF from external events. The ISF will be a fully<br />
functional, self contained building that is located separately from other building structures at<br />
the site. The design of ISF will minimise the consequences of such an event by placing the<br />
storage area under the ground.<br />
12.4 Building Operations<br />
12.4.1 Normal Operation of ISF<br />
12.4.1.1 <strong>Waste</strong> Package Transportation<br />
The on-site shipment of the waste packages will be performed by means of a Container<br />
Transport Truck. The truck will be equipped with a shielded transport container, if required<br />
into which the waste package will be placed. A cover will be fitted over the shielded transport<br />
container during transportation. For transportation from WTB to the ISF existing roads inside<br />
the supervised area of the NPP will be used.<br />
12.4.2 Receipt Of <strong>Waste</strong> Packages<br />
The serial numbers of the waste packages will be documented via the transport papers on<br />
arrival at the ISF.<br />
The data for each waste package (e.g. dose rate, serial number, batch number, analysis of<br />
the waste batch, etc.) and storage of the waste package will be documented at the package<br />
measuring station. The location of a waste package within the ISF will be unequivocally<br />
linked to the waste package number. The method of linkage can be achieved by two means:<br />
1. Input of the information into the PC system in the WTB;<br />
2. Input on arrival at the ISF.<br />
Both methods will ensure that the package data and storage location are appropriately<br />
logged for future reference.