Developed Operational Strategy - Low Level Waste Repository Ltd

LLWR Developed Operational Strategy10009/LLWR/LTP Date: March 2010Photos of decontamination of empty drumIt is considered that the option of reusing the concrete and brick material on site is BPEO. Interimdecommissioning and decontamination activities will remove any contaminated coatings and surfacecontamination from the concrete. The final decommissioning of the concrete is scheduled to occur lastin the programme, as scope for follow-on projects. This is planned due to the ability to access theconcrete after demolition of the superstructure and coupling it to the Vault 8 closure and capping activity.There are benefits to the contractor who re-uses this material integral to the breaking of the concrete,processing (size reduction and rebar separation), stockpiling, and hauling. This waste stream can beloaded at point of demolition into off-road trucks and hauled directly for processing. The design of thevault cap will evaluate re-use of this concrete and rubble material as in-fill or general fill material.Depending on the outcome of the VLLW strategy (See Section 4), a new project to construct a VLLWfacility may also have potential needs to re-use the concrete. This could be for construction materials orin-filling layers for operation of the facility.The soil stripped from the cover of the magazines will be stockpiled and stay on site for re-use. This soilmay be used for recontouring and restoration of the PCM areas to establish drainage following theremoval of concrete and bituminous pavements. The rock material used in the gabian baskets and wingwall construction is also planned for re-use. The aggregate materials from beneath the concrete slaband bituminous pavement, as well as the processed paving materials themselves, are anticipated to besuitable for re-use.There are 3 facilities that have been assessed and are proposed as suitable for reuse and will thereforenot be removed. These facilities are the Crate Handling Facility B726, the Drum Re-packing facilityB746, and the Office Accommodation B728.1. The Crate Handling Facility, B726, is not a contaminated facility; historically, it has been used forcrate handling. The facility posed no radiological hazard and has a building crane which couldsupport future maintenance and operations on the site. It is located centrally on the LLWR siteand is unobtrusive in appearance.2. The Drum Re-packing facility, B746, is not a contaminated facility; historically, it has been usedfor removal and re-packing drums from B720 and Magazine Retrieval facilities, loading drumsinto containers ready for transportation to Drum Stores. The facility poses no radiological hazardPage 52 of 62