Leeds Valve is assisting the Jersey Electricity Company (JEC) and the States of Jersey in a major £105 million Energy from Waste project. It will replace the out-dated incinerator, which gives off visible emissions, with a new 10MW Energy from Waste incinerator which will produce electricity to run itself and power 10,000 homes. As part of the project, JEC was commissioned to provide cooling water from the existing systems of La Collette power station. Leeds Valve supplied JEC with a number of isolation valves to be installed in the existing 45 year old sea water culvert system so that the new cooling water system can be tapped off it. To reduce system downtime and allow for interchangability each of the non-standard 1.5M (5ft), 2.2 tonne butterfly valves were manufactured to precisely fit the original dimensions. The valves, which are thought to be the biggest on the island, are capable of shutting off a full-bore flow rate of 20,000CUM/hour. Each valve has been manufactured to meet the exacting requirements of this application. They have double flanged bodies in ASTM A126 Class B material, protected by a fully vulcanised rubber lining, which is machined to give optimum interference for low torque and extended wear life. The valve internals are in high-grade sea water resistant aluminium bronze. The system has now been pressure tested and commissioned and is to provide cooling water to the Energy from Waste plant for the next 25 years.
