Pipework deal for Livigunn

Cheshire-based GHA Livigunn is finalising the design of a metal-free cooling system for Torness power station

GHA Livigunn, a specialist process, mechanical and electrical design consultancy based in Frodsham, Cheshire, is finalising the design of a metal-free cooling system for a power station.

British Energy awarded the contract for polyethylene (PE) reactor sea water (RSW) cooling water pipelines for Reactor 1 at Torness power station in Dunbar, which is on Scotland’s east coast. Livigunn had previously worked on a similar project at Heysham 2 power station in Lancashire.

The PE RSW solution was devised by the site’s system health engineer Mike Craddock when looking into a more effective means of RSW cooling transportation than traditional ‘vylastic’ coated carbon steel. This old solution is being phased out due to corrosion and lining problems, and also because it suffers from bore reduction when encrusted with sea life.

Craddock realised that the properties that make the PE pipes suitable for use in the gas and water industries could provide the characteristics required to replace the suction and discharge RSW pipework at Heysham.

After vigorous testing, British Energy awarded the contract to replace pipework at Heysham to Boultings Mechanical and GHA Livigunn. It has resulted in reduced mollusc infestation and anticipated longer pipework life.

The Torness team chose the solution after a site visit to Heysham, and design work is now being completed.