Articles & Case Studies

Offsite construction eases Anglian Water pressure

Posted: Tuesday 5th February 2013

Anglian Water serves 5.5 million people and 125,000 businesses in the East of England, one of the driest regions in the country with a rapid rate of housing growth. The company’s goal is simple - to deliver a reliable supply of clean, safe drinking water and effective wastewater services at an affordable price.

However, achieving this in a region assessed by the Environment Agency as one of ‘serious water stress’, is a tough challenge. With 42 per cent of customers in flat, rural areas, it is little wonder that Anglian Water operates over 4,300 pumping stations, each one crucial to the water supply infrastructure. Every new housing development places additional load on the water main, reducing pressure and potentially compromising water quality.

Traditionally, to design and build a booster pumping station - a DG2 - takes several weeks with multiple trades on site. So having heard about NG Bailey’s off-site manufacturing capabilities via buildoffsite, Anglian Water approached the company to develop an innovative way ofovercoming the problem, with a solution that would deliver additional pumping capacity quickly and cost effectively.

NG Bailey’s off-site team immediately saw the potential to deliver an off-the-shelf product range of new pumping stations. The total cost saving of delivering this product, including design and engineering time, would be over 20 per cent, compared to traditional methods.

The result is not only a value-engineered design, with all the cost-advantages of standardisation and industrialised production, but also a ‘configurator’ installed on the client’s intranet. This system enables project managers to configure the specific model they need, by pumping capacity (from five to 50 lt/sec) and 17 other options ranging from its colour to whether it required a burglar alarm. The system turns out complete drawings, a bill of materials and a delivery schedule. The unit goes straight into production, which takes as little as three days.

The assembly process is also refined. A sacrificial template, set into the concrete base on site precisely determines the positions of all pipework coming into the plant room, so that when the unit is delivered it can be fixed and able to pump water in as little as four hours. The solution is now available under licence to other utility companies.

Technical delivery manager at Anglian Water, Mark Enzer said: “The new product has reduced construction time by 50 per cent, offering Anglian Water an extremely efficient solution and reducing disturbance to our customers. The use of innovative off-site construction techniques is an excellent example to follow”




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