Johnston Pipes announces power station GRP orders

Johnston Pipes Ltd. of Telford, Shropshire, UK, has three new contracts in the power industry for glass reinforced plastic (GRP) pipes. All three contracts, at Didcot and Teeside stations in the UK and at Kuala Langat in Malaysia, involve large diameter GRP.

At Kuala Langat, 2.1-m GRP has been supplied for a 350 m underground section of the cooling water circuit, along with several large diameter pipe fittings.

GRP was specified at Didcot B combined-cycle gas turbine power station because the material is one-seventh the weight of traditional reinforced concrete pressure pipe, which was also being considered. The push-fit joints of the GRP also helped, because they offer more flexibility during thermal movement.

Johnston Pipes supplied 2.1-m diameter 4-bar pressure pipe, including special fittings, for an 800-m main cooling water circuit. Because of the material`s light weight, handling and installation were easier and less expensive. At Teeside Power Station where there was a cooling tower upgrade, a GRP pipeline was installed above ground around two new cooling towers.