WET News

4 WET NEWS OCTOBER 2018 | wwtonline.co.uk NEWS+ United Utilities to bring West Cumbria pipeline into action early • Company takes action following summer heatwave P arts of United Utilities' new £300 million water supply scheme in West Cumbria will be coming on line three years ahead of schedule as part of the water company's response to the dry summer. Engineers are currently working on an ambitious scheme to make use of stretches of the new pipeline as early as next month to help keep water supplies on tap for commu- nities around Aspatria. The plan is to use parts of the pipeline already laid between Workington and Wigton to tap into water supplies from the River Derwent at Barepot. The water will be pumped 25km to Quarry Hill water treat- ment works near Mealsgate, where it will help to relieve the pressure on local water sources in the area. John Hilton, project director at United Utilities, said: "The dry spring and summer has meant that the usual water sources feed- ing Quarry Hill, such as Overwa- ter, are running very low. We are looking at all possible solutions to minimise the environmental impact and ease the strain on these sources and that's where the new pipeline comes in. "We have some spare capacity at our water abstraction point on the River Derwent at Barepot and we nearly have a complete pipe- line all the way to the treatment plant, so it's a question of joining up the gaps." The West Cumbria engineering team is now in the process of building four new temporary pumping stations, four balancing tanks and 3km of additional pipe- work. There will also be two new river crossings, one beneath the River Derwent at Barepot and one above it on the A595 bridge at Papcastle. Hilton explained that the pipe- line scheme had made very good unprecedented situation, and the work is essential to safeguard water supplies." The West Cumbria pipeline project is currently about a year ahead of schedule thanks to the dry weather and the team has managed to lay 45km this sum- mer. This has allowed the team some flexibility to help with the drought effort. The £300 million West Cum- bria Water Supplies project will progress during the dry weather, and in some areas around Stain- burn and Brigham landowners had been told that work was complete. "We will need to go back into some of the areas where we had finished, and there will be some temporary road closures while we lay the new sections of bypass pipework," he said. "We hope that people will understand that this is an bring more reliable and sustaina- ble water supplies into Allerdale and Copeland. The scheme will link the area to Thirlmere Reservoir, and involves the construction of 100km of new pipeline, a new treatment plant at Williamsgate, two new pumping stations and two new underground service reservoirs. The project started in spring 2017 and it will be in use by 2022. Barhale gets Thames Tideway civils package C ivil engineering and infra- structure specialist Barh- ale has announced it has been awarded the £9 million main civils package at Barn Elms Sports Centre work site in Richmond, part of the Thames Tideway Tunnel (TTT) project. The contract, which started in September and is due for comple- tion in two years, was awarded by the BAM Nuttall, Morgan Sindall and Balfour Beatty joint venture in delivering the west section of the 25km tunnel. It will see the West Putney Storm Relief Combined Sewer Overflow (CSO) intercepted at Barn Elms by constructing a series of complex underground structures connect- ing it to the main TTT beneath the River Thames. A 35m deep CSO drop sha¡ formed with a sprayed concrete lining (SCL), primary lining and 6m ID secondary lining will con- vey the storm flows from the existing CSO down though a vortex generator and a drop tube to the connection tunnel, which will be constructed by a 2.5m x 215m pipe jack finished with a 2.2m ID secondary lining. Barhale has 35 years' experi- ence in the construction indus- try and was founded by chair- man Dennis Curran in 1980. Contracts manager Ovi Frunza said: "This is a very exciting and important project for Barhale. It's a challenging piece of work but with our experience in this sector we are confident that our input to the Thames Tideway Tunnel will help ensure its aim of reducing sewage overflows into the River Thames." Barhale is currently operating on all the three sections of the project and also the Thames Tun- nel system modification works at Beckton sewage treatment works in east London that will support the overall TTT project. In March, Barhale was awarded a five-year contract worth about £26 million for Lot 1 on the pro- posed high speed two (HS2) rail project as part of the Affinity Water framework for network modifications. The water com- pany awarded contracts worth an estimated combined £55 million for the framework. One of the TBMs, named Diggory by local schoolchildren, is lowered into position at Castlerigg near Keswick CONTRACT WINS Drainage and civil engineering company Jet Aire Services has been awarded a 12-month contract to provide drainage maintenance on behalf of Yorkshire Water. Valued at circa £100,000, the work includes cleansing and clearance services to be provided throughout the Yorkshire region as a Tier 2 contractor. Hampshire-based WPL has won three supplier frame- work contracts for wastewa- ter treatment plant and equipment with Scottish Water, covering both hire and purchase agreements. WES has been awarded a chemical dosing framework agreement (FA1310 Chemical Dos-ing Equip- ment – Lot 2) by Thames Water, providing design expertise, engineering know-how and dosing equipment. Yorkshire Water has said the first stage of its £300,000 satellite leak detection trial has saved 0.5 megalitres of water per day. Jason Griffin, Yorkshire Water's leakage technology manager, said: "We are thrilled with the results of the first trial and extremely excited about how satellites can help us find those burst pipes in remote locations." Northern Ireland Water has been fined £60,000 for two separate discharges from a sewage treatment works at Killinchy, County Down, in 2017 and £20,000 for an incident near Castlewellan in 2016 that left 1,900 fish dead as the result of a cracked pipe. The £80,000 fine is a record for NI Water and represents only the second time the utility has been prosecuted in the Crown Court. Good monthT- Bad month Nomenca begins £22M expansion work on South East Water WTW N omenca has begun a £22 million expansion of South East Water's Bray Keleher Water Treatment Works in Berkshire that will see it increase approximately one- third in size and output. As part of a joint venture with BAM Nuttall and South East Water, the project is scheduled for completion in March 2020, and will ensure water supplies continue for thousands of homes and business across Berkshire, Surrey and Hamp- shire. The expansion is part of South East Water's five-year £424 million investment programme. With the Bray Keleher site currently capable of abstracting up to 45 million litres of water from the River Thames and turn- ing it into fresh drinking water every day, the expansion will see output increased to 68 mil- lion litres of water every day. This increase is a direct result of water supply and demand fore- casts that revealed the need to increase output in the area due to increases in population and consumption. Brian Steventon, project man- ager at South East Water, said: "This is an important project that ensures tens of thousands of homes in the area will con- tinue to get top quality, clean drinking water. "We involved the local com- munity from the very beginning in order to minimise any disrup- tion, and promoted honest, two- way communication through- out; including drop-in sessions where people could come and ask questions." Tony Stanbridge, operations manager at Nomenca, a special- ist engineering arm of NM Group, said: "The Bray Keleher project is a flagship scheme within South East Water's cur- rent AMP investment pro- gramme and we are proud to be playing a leading role. "The project has been meticu- lously planned and the collabo- rative approach to working is paying dividends, with work on site progressing well and the project is on track for comple- tion in Spring 2020."

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