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Tag Archives: tunnelling

London’s Hurst-Crayford power tunnel energised

London Power Tunnels Alice Delahunty Minister Shanks 604

National Grid has energised its 2.5km 275kV power tunnel between Hurst substation and Crayford, one of the transmission circuits in the 32.5km LPT2 route across south London. “The previous cables between Hurst and Crayford were reaching the end of their operational life, having been commissioned in 1967 and having served London reliably for decades,” according to National Grid, which explained: ...

Peratech borrows £1.2m to grow faster

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Peratech has borrowed £1.2m investment from Finance Yorkshire’s Equity Linked Fund will to “build new laboratory facilities and secure new contracts”, said the North Yorkshire, firm. The company develops switches and sensors based on ‘quantum tunnelling composites’. Invented by CTO David Lussey, QTCs are force-sensitive variable resistance elastomers, whose unstressed resistance is almost insulating. “We don’t need the money now ...