UU upgrades Victorian mains around Liverpool
United Utilities has completed a multi-million-pound project to upgrade four huge water mains that have supplied Liverpool for the last 150 years.
Running from Prescot Water Treatment Works to the city centre through Huyton and Knowsley, and varying in size from 36 to 44 inches in diameter, the pipes have been closely monitored by the water company since two high profile bursts caused problems in 2007 and 2008.
The four massive pipes, the oldest of which was laid in 1856, had provided an excellent water supply to around 400,000 people in Liverpool for decades, but after the two catastrophic bursts, water engineers needed to take action.
Dan Smith of United Utilities, said: “The Victorian engineers who laid these mains all those years ago would be amazed they lasted so long. Over the years they’ve been patched-up and were given a new inner coating in the early 1990s, but remain a credit to the trailblazing engineers who designed and laid them all those years ago using handheld tools.”
The four mains have all be modernised in a multi-million pound project, which has seen engineers sliding the new pipes through the old ones.
Engineers faced many challenges during the past few years: “Overhauling pipes of this size, whilst keeping taps flowing for thousands of customers, took careful planning and meant that each pipeline had to be decommissioned, replaced, tested and commissioned as separate pieces of work, almost creating four projects in one,” said Smith.
“We’re lucky we could use machines to push the new pipes through the old ones. Some sheer strength was needed, but nothing like the amount required back in the 1850s.
“But like the Victorians, these pipes will outlast us all. In fact, they will beat the 150-year-old record,” he added.
- Scottish Water completes large scale Aberdeen pipe cleaning project Scottish Water has completed a project to clean 100 miles worth of iron pipework in the Aberdeen area, safeguarding water... Read More >
- Cabinet secretary checks out Scottish Water's Elmvale Row scheme The Scottish government's cabinet secretary for Infrastructure, Investment and Cities, Keith Brown MSP, has been visiting... Read More >
- Severn Trent fined for supplying water 'unfit for human consumption' Coventry magistrates fined Severn Trent Water £66,000 yesterday after the utility pleaded guilty to 11 counts of supplying... Read More >
- Corrosion of water pipes: out of sight, out of mind? Pipe corrosion is a major cause of water quality complaints by customers, but how often is the water itself responsible... Read More >
- Project Focus: Going with the flow in the Elan Valley The first of three tunnel diversions has recently been completed as part of the £300M Severn Trent project to renovate the... Read More >
- National pride of top tappers Drilling and Tapping teams from America and the Netherlands are gearing up to take part in the World Water Cup in... Read More >
- Comment: A Totex Journey The move to outcomes and Totex-Based Regulation in AMP6 should mean water companies and contractors involving suppliers ... Read More >
- Valves and flow control: Pressure Points Building a smarter network need not be expensive - a first step is to establish a calm pressure profile, writes Craig... Read More >