In 2020, Cognition teamed up with Climate Care to offset our total annual emissions and becoming Carbon Neutral for the first time. In the same year, the company committed to stay proactive, adopting and developing more sustainable remediation methodologies, selection of materials and energy sources we use, reducing the need for offset element of our emissions. Our long-term goal is to continue improving efficiency and minimise emissions from our routine site and office operations across the board.
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Hunterston, Nuclear Power Station

7 July 2014

Cognition was contracted by Magnox Ltd to carry out cement stabilisation of soil material to support the Solid Intermediate Level Waste Encapsulation (SILWE) plant which will be constructed at Hunterston A Power Station.

Cognition was contracted by Magnox Ltd to carry out cement stabilisation of soil material to support the Solid Intermediate Level Waste Encapsulation (SILWE) plant which will be constructed at Hunterston A Power Station. Cognition excavated trial pits to obtain samples of the glacial till in order to carry out design testing to determine the optimum binder mix to meet a proposed allowable bearing pressure of 300 KN/m2. The works required careful excavation of soil between an existing culvert and concrete slab with dewatering to manage groundwater inundation. Excavated material was processed to remove oversize boulders and concrete which was crushed and reused as capping material above the stabilise soil. Stabilisation using a mixture of lime and cement was carried out with an excavator mounted mixing bucket with material backfilled and compacted in accordance with the Highways Specification. Plate bearing tests demonstrated the stabilised material met the design specification.

hunterston-1.jpg Cement stabilisation of site won glacial till hunterston-2.jpg Completion of stabilisation and compaction
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