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Bespoke Engineering Solutions

Andrea Basso Head of Engineering for Nuclear Engineering Services (NES)

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Why bespoke engineering solutions?Wastes – 1 April 2010 and estimated for future arising volume and masses in UKNDA – The 2010 UK Radioactive Waste Inventory: Main Report

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Nuclear Waste in the UKMajority of the Nuclear wastes in the UK are stored at Sellafield in four main storage facilities.These facilities contain waste such as: irradiated and non-irradiated steel, activated stainless steel, reactive metals, organic / cellulosic material, graphite, cans and drums etc.

Why we need Bespoke Solutions•We need unique bespoke solutions to retrieve, size reduce and encapsulate waste• Two mechanical rotating, extending arms with

and end effector which is able to pick-up a rope and crab in-cell from a crane or other device and manage the deployment of the crab to cover the full silo surface.

• The arms are extendable to 4 metre length and designed and manufactured with tolerances at full extension +/- 50mm and +/- 0.1 degree on rotation.

• To drive the arms a chain driven system was developed.

• SSD could be fully software integrated with the crane or other rope and crab deployment.

•NES Solution - Second Stage Deployment (SSD) system

NES Solution - Waste levelling Silo Rake• The rake ensures waste is levelled for flat

retrieval to avoid loading the civil structure of the silo with forces derived from the collapsing of unlevelled waste.

• Silo rake fits inside a standard 3m3 skid for input and export into and from the silo.

• Deployed attached by rope.

• Fully extended up to 6m length.

• Chain driven system, not hydraulic cylinders.

• Collapses vertically in failure mode allowing the rake to exit from the silo

• Raking does not apply forces to the civil structure