WET News

4 WET NEWS SEPTEMBER 2017 News+ Scottish Water diverts Ayrshire river on pipeline project • Contractors stick to 'tried and tested method' to move a watercourse temporarily so major £120M pipeline scheme can continue. S cottish Water has com- pleted a key piece of engi- neering on a £120M water mains improvement project by diverting a river in East Ayrshire to enable the pipe to be installed. Contractors working for the utility company on the project, which will benefit more than 200,000 people and businesses in much of Ayrshire and parts of East Renfrewshire, recently diverted a short stretch of the Craufurdland Water near Kilmar- nock to enable them to install the water main beneath the river bed. The operation was carried out by Caledonia Water Alliance (CWA) to enable a 60m stretch of the permanent riverbed in pictur- esque countryside near Craufurd- land Castle to run dry before they could excavate and install the 900mm steel pipeline in dry conditions while allowing the river, and its inhabitants, to con- tinue flowing downstream rela- tively uninterrupted. The work involved the excava- tion of a temporary channel which needed to be wide enough and deep enough to carry the vol- ume of water that naturally flows along the watercourse. The chan- nel was lined with a plastic sheet- ing to prevent the banks scouring away and to prevent any siltation of the downstream watercourse. Straw bales and one tonne of builders' bulk bags filled with gravel acted as a barrier to redi- rect the watercourse in to the new channel that was excavated so that the water flow passed around the working area. Jane McKenzie, Scottish CONTRACT WINS Aerial mapping company Bluesky has won a new three-year deal with Yorkshire Water for the use of the latest high- resolution aerial photog- raphy to help manage the utility's water network and assets covering nearly 15,000km2. Drainage company Jet Aire has started an extensive contract to carry out sensi- tive drainage improve- ments at a chemical manufacturing facility in Manchester for drug development company CARBOGEN AMCIS. Yorkshire Water has chosen Engie to supply its energy services, and help it cut costs and carbon. Under the five-year deal, Engie will help Yorkshire Water reduce its energy consumption by carrying out comprehensive audits of the water company's sites. water mains project which will benefit so many people across much of Ayrshire and East Ren- frewshire. However, as with every project large or small, we are acutely aware of our environmen- tal responsibilities and the diver- sion of a stretch of the Craufurd- land Water during this key phase of the project is a prime example of that. "We liaised with the Scottish Environment Protection Agency (SEPA) for the formal consent and permission to cross the river and we used a tried and tested method of moving a watercourse temporarily to enable us to install the water main while minimising disruption to the river. We are delighted to say the operation was completed successfully, while protecting the fish in the river, and we are now continuing to progress with the pipe installa- tion beyond the river." Scottish Water is improving the water supply network by installing more than 30 miles of new water mains to connect the system in Ayrshire with the Greater Glasgow area's network. The new and expanded net- work will enable Scottish Water to provide customers with greater security of supply and to respond more effectively to operational issues such as burst water mains and minimise disruption. A temporary channel was created to carry the volume of water that naturally flows along the watercourse "…we used a tried and tested meth- od of moving a watercourse tem- porarily to enable us to install the main while mini- mising disruption to the river" Jane McKenzie, Scottish Water Good monthT- Bad month For Amey, which completed repair work to the Edge Lane sink hole in Liverpool for UU in just six weeks. The extensive hole was caused by a collapsed Victorian sewer. The "vital" water development facility at Gorthleck that will "accelerate the arrival of new technologies" was praised by Scotland's environment minister. For Lanes Group, ordered to pay more than £8,000 in fines and legal costs by Wolverhampton magistrates for illegally taking water from a hydrant on more than one occasion. For plumbers. Statistics show nearly a quarter of water quality failures at customers' taps are due to inadequate household plumbing. Thames uses mobile soil recycling unit for pipe projects • Recycling unit helps utility to reduce its carbon footprint, and to reach its target of sending excavated materials to landfill. A state-of-the-art mobile recycling unit is playing a vital part in Thames Water's ongoing project to repair and restore its water mains. The Stabiltech recycling unit processes excavated material before combining it with other substances and sending it to help backfill the land following the pipe repair. The high produc- tion mobile recycling truck, developed by multi-utility con- tractor Conroys Group, can visit multiple sites in the course of a week, saving time and cost and cutting waste. Mains repair and rehabilita- tion is being carried out by Thames Water's eight2O alliance as part of the utility's investment into its network, and involves the repair and replacement of old trunk mains that supply the company's nine million custom- ers with high quality drinking water. Jenny Minford, environmental advisor at Thames Water, said: "This process means that waste can be turned into a material product for use on our works. "It reduces costs and carbon, since there is less reliance on imported materials and there are fewer vehicle movements from deliveries and muck-away." The mains rehabilitation pro- gramme is a key project for the company in reducing leakage, as it targets pipes which are in poor conditions and makes the net- work more resilient. The excavated material is from the ground which sur- rounds the pipes, plus sections of the pipe which have had to be dug out and repaired. concrete steel clean water civils waste water FULL REFURBISHMENT SERVICES FOR RESERVOIR & WATER TOWERS, CLEAN & SEWAGE TREATMENT WORKS, STEEL/CONCRETE TANKS & VESSELS, SPILLWAYS & AQUEDUCTS, BRIDGES, PIPEWORK, PIPE BRIDGES & OTHER ASSETS. FULL CIVIL ENGINEERING CAPABILITY INC NEW BUILD PROJECTS. PLEASE CONTACT US FOR OUR FULL SCOPE OF SERVICES. Stonbury_Advert Wet News_March 2017_185x131.indd 1 07/03/2017 12:01 Need to know The work took about five days to complete The watercourse was identified as significant and well stocked by the Ayrshire Rivers Trust Customers across a large part of Ayrshire currently receive their water from a single source, the Bradan WTW The water is supplied to customers' taps via a 34-mile- long trunk water main installed about 50 years ago CWA is the joint venture between Morrison Utility Services and AECOM Customers across a large part of Ayrshire currently receive their water from a single source, the Bradan Water Treatment Works. The construction of the new stra- tegic water main, which is expected to be completed in 2020, will connect the Bradan water supply network to the net- work served by the Milngavie and Balmore water treatment works, north of Glasgow. When com- plete, Scottish Water will be able to transfer water between Glas- gow and Ayrshire. Water's communica- tions manager, said: "Scottish Water is working on the latest phase of its £120M The Stabiltech recycling unit was developed by Conroys

• Cover