Leak Detection & Repair

A ground-breaking solution to tackling the challenges of water scarcity and demand identified by Morrison Water Services and Northumbrian Water has reduced leakage in two pilot areas by at least a quarter.

Morrison Water Services, a part of M Group Services’ Water Division, and Northumbrian Water have been successfully trialling groundbreaking new leak-detection technology, VariSim Delta, since March in a bid to reduce leakage from the clean water network. Leakage in the pilot areas, Newcastle and Dagenham, has reduced by 25% using the software system that uses flow meters, pressure sensors, high-frequency sampling and acoustic loggers to help identify leakages and bursts before they happen. Trialling VariSim Delta came out of a sprint held at the Northumbrian Water Innovation Festival last October. Innovators from across the world came together to look at creating a proactive approach to avoid leakage from a clean water network.

Morrison Water Services is the exclusive UK supplier of VariSim Delta, a ground-breaking technology can help to minimise disruption to customers’ homes and businesses, keep water flowing and reduce the amount of water lost from the network through leakage. VariSim Delta has already been implemented successfully in Qatar and Dubai, two of the most water-stressed countries in the world.

By using millions of calculations per second, VariSim Delta creates an identical digital replica of a water network, known as a digital twin or pipeline simulator. This real-time virtual recreation of the network can also help water companies understand why bursts happen, assess the condition of network assets and pipes and the profile of customer demand to help make informed decisions about asset optimisation. Driven by Artificial Intelligence (AI), VariSim Delta software can also be taught to spot new leaks and bursts, identify changes in customers’ water consumption and create alerts for malfunctioning assets. Andy Carter, Business Services Director for M Group Services Water Division, said: “We are delighted our pilots with Northumbrian Water have so conclusively demonstrated that VariSim Delta is a proactive solution to water leakage. For this to come out of working together at the Innovation Festival is proof that collaborative working between innovative thinkers can successfully explore new ideas and identify new ways to tackle leakage and other challenges the water industry faces. “Predicting leakages and bursts means fewer emergency excavations and more proactive action to tackle leakage in ways which are good for reducing costs, reducing carbon emissions and delivering better outcomes for customers.

“As the exclusive supplier of this progressive technology to the UK’s water industry, we are confident we can revolutionise the ways leakage and network performance are managed, minimising disruption on the network and keeping water flowing to customers’ homes and businesses.”

Andy added: “We’re pleased to be supporting the festival again this year and look forward to meeting people at the reception and throughout the week for more interesting conversations about the power of innovation.” Glyn Addicott, operations director at Hydraulic Analysis, said “We are delighted to be working with Northumbrian Water in delivering an industry-leading Digital Twin. We will reduce leakage and improve asset performance by monitoring critical supply areas in the region using live hydraulic models driven by pressure, flow, and acoustic data. Our pipeline simulation software, VariSim Delta, is deployed on water networks and trunk mains around the world and we look forward to implementing our proven solution in the UK in this groundbreaking contract.” Jim Howey, Head of Water Networks for Northumbrian Water, said: “By using this exciting new technology, we can look proactively at leakage - stopping the churn of finding and fixing without knowing the root cause.

“The digital twin is helping us to understand our networks better and has been built based on data we already have along with pressure sensors in pipes. “By using it, we can look for anomalies and tackle leaks in a much more efficient way – helping to save water and resources across our operating areas.”

By Tim Farley

Business Development Manager, Sanivar

Innovation is often perceived as radical and complex change using futuristic solutions to solve advanced challenges, but a shift in mindset to use proven technologies in everyday practices to tackle current issues could transform the rate at which the industry progresses. Leakage is a well-recognised and established issue within the water industry, and we have a host of businesses and bodies looking at ways that leakage can be reduced. The Northumbrian Water Innovation Festival recently returned to Newcastle and discussions centred on developing ‘no dig’ solutions to usher in a massive reduction in leakage. But while this solution is an extremely favourable one, the technology is likely another five years away. What is truly needed to overcome the challenge of leakage is immediate action.

Leakage is a huge environmental and societal challenge. Within the UK marketplace it is estimated that approximately 2.459 million litres of water leak across England and Wales water mains every single day. The cost of utility street works for water, electricity and gas, factoring in intervention and disruption, costs the UK economy £7billion every year. Leakage at this rate represents a failure of industry – water is arguably our most precious resource and paying to treat water that we will never have an opportunity to use is a huge waste of funds and resource. The problem is also set to worsen over coming years. Demographic changes in the UK will prompt higher demand for water, and the increasing number of housing developments apply further pressure, particularly in the South East where water stress is greatest. These changes will be compounded as we see the effects of the shifting climate impact our country in ways we can only begin to predict. With all of this considered, typical BAU practices are not sustainable and will not deliver the long-term outcomes needed to combat the challenges that the sector faces. The industry-wide target identified at the Festival is to halve leakage by 2050 while simultaneously minimising interruptions and reducing repair costs. With more immediate interventions, this timeline could be much shorter.

The debate over this issue is centred around responsive and preventative solutions. Water companies are locked into a leak repair mindset as opposed to looking at maintaining the network, and a quantum shift is needed in our thought processes behind leakage solutions. Fixing a pipe leak is a responsive action, however, repairing a leak often only shifts the issue further down the pipeline to another weak spot, deferring the problem to a later date. Pipe lining and spray lining technologies are preventative measures that ensure protection of the entire line and its supply. For example, our stand-alone ‘pull in’ liners have been used around the world for the trenchless rehabilitation of pressurised water mains. Using ‘minimal-dig’ technology, they are inserted within existing pipes so that should a breakage or leak occur in the host pipe the supply of the resource is not compromised, There are further changes that could also be made for immediate impact. A significant proportion of the operations teams within the water sector are over 50 and will be retiring within the next 20 years. This can be a blocker to innovation as these individuals will often default to tried and tested methods and may not wish to embrace innovation in the twilight of their career, inhibiting innovation in the sector. Encouraging new talent into the industry to explore their fresh ideas and capitalise on their motivation to try new solutions to solve longstanding problems is vital to bring about an industry-wide cultural shift. We shouldn’t be frightened of failing on the journey to innovation and allow fear to lull the industry into waiting for future Utopian solutions to solve problems. Innovation is about evolution and changing our working practices now is a vital step along this journey.