New research shows how a special tool called a noise logger can detect leaks accurately and efficiently, before major roadwork is required.
The world is approaching a water crisis. According to the International Water Management Institute, 33 per cent of the world’s population will experience water scarcity by 2025.
One main cause is leaks. Twenty to 30 per cent of treated water is lost in systems because of this simple and fixable problem.
Repairs need to be as precise as possible because excavation and resurfacing is a costly undertaking. Digging up more than one location, or more area than is needed for the repair, can lead to a problematic domino effect including traffic disruption, commuter frustration and loss of business.
Meanwhile, there are major public health risks associated with contaminants entering the water system through holes in pipes.
Luckily, researchers from Concordia University in Montreal have an innovative solution. In an article recently published by the American Society of Civil Engineers, Tarek Zayed, professor in the Department of Building, Civil and Environmental Engineering, shows how a special tool called a noise logger can detect leaks accurately and efficiently, before major roadwork is required.
“This approach can reduce the duration of a leak, as well as the cost and time involved in locating the site in need of repair,” says Zayed, who co-wrote the article with post-doctoral fellow Mohammed S. El-Abbassy, recent graduate Fadi Mosleh and Ahmed Senouci from the University of Houston and Qatar University.
For the study, the researchers went all the way to Doha, Qatar to test their theories. The small nation has one of the lowest precipitation rates in the world, as well as one of the highest evaporation rates — meaning the little rain that falls is quickly reabsorbed by the atmosphere as water vapour.
“Qatar is currently facing significant challenges regarding its water supply,” explains Zayed. “Its water distribution network currently suffers from 30 to 35 per cent water loss due to leakage.”
Working on-site at Qatar University, the team installed the noise loggers along the institution’s main water network and used them to record the constant noise generated by a leak over a two-hour time period. They then analyzed the readings, comparing sound level and sound spread. A consistent anomaly meant a leak investigation was required.
Over several weeks of monitoring they collected data from across 140 different points. They then ran simulations using mathematical models to determine the location of the leaks. The facilities management team at Qatar University reported back on the actual locations and found that the team had estimated with 99.5 per cent accuracy.
For Zayed and his team, the next step is to collect leak-data surveys of real-life pipelines from municipalities that use noise loggers and develop customized leak location prediction models.
The Latest on: Noise logger
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The Latest on: Noise logger
- Hawaii Energy helps county improve water leak detectionon September 3, 2019 at 3:05 am
With the help of Hawaii Energy, the county Department of Water Supply was able to purchase more than 200 noise data loggers to help identify hidden leaks in the county’s underground water distribution ...
- New equipment helps DWS spot leaks and save moneyon September 1, 2019 at 3:05 am
HONOLULU – Prevention goes a long way. Through the help of Hawaii Energy, the Department of Water Supply, County of Hawaii, was able to purchase more than 200 noise data loggers to help identify ...
- Noise, struggles in wait for new Manawatū roadon August 30, 2019 at 1:11 am
even with the TV turned up - the noise inside the house is that loud." Groves, who has a disability, said it was too dangerous to use his driveway as large logging trucks thundered past. He said New ...
- New tech in Hawaii County finds water leaks fasteron August 29, 2019 at 11:12 am
The Department of Water Supply for the County of Hawaii purchased more than 200 noise data loggers to help identify underground leaks in its water distribution system. The new noise data logging ...
- Leak Detection Tech to Save Money, Energyon August 28, 2019 at 1:47 pm
The new noise data logging technology will allow DWS to detect invisible leaks earlier, resulting in an estimated annual energy savings of more than $265,000 and an estimated annual water savings ...
- Sigzig Data Loggers Ditch The Noise While Pimping The Caseon August 17, 2019 at 5:00 pm
We ran into [Paul Allen] at CES. He was showing off Sigzig, a super-low noise data logger which his company is just rolling out. A couple of years ago he worked on a standalone chemical sensor and had ...
- Malaysian water utility cuts non-revenue water by one-third with remote monitoringon June 30, 2019 at 5:00 pm
UK leakage technology specialist Primayer was approached by Ranhill through Mimtech, the company’s authorized distributor for the southern region of Malaysia, and the Enigma3m advanced remote ...
- Remote Noise Logger Trial Pinpoints 115 Leakson June 30, 2019 at 5:00 pm
A technology trial involving installation of 295 Enigma3m remote correlating noise loggers in a water distribution network in the State of Johor, Malaysia, has successfully cut net night flow by a ...
- Logger, property owner suing Hooksett for $4 millionon May 9, 2019 at 8:26 am
In a Merrimack County Superior Court civil lawsuit, logger Timothy Trimbur and property owner Louise Marple maintain local officials illegally charged them with violating the town’s noise ordinance. A ...
- Vice-Rector Danis Nurgaliev receives Russian Government Prize in Science and Technologyon March 15, 2019 at 7:54 am
The ceremony was held in the White House in Moscow on 14th March. The subject of the prize, spectral noise logging, is a popular topic of research for many petroleum engineering centers. In particular ...
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