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
via Google News
The Latest on: Noise logger
- Toronto's noise bylaw gets a rethink on February 13, 2019 at 9:04 am
Noise complaints used to be handled by the police ... individual promoters should have their own on-staff person in charge of measuring and logging dB(A) and dB(C) levels. […]
- Zaiter, Tanners ready to make noise in state tournament on February 12, 2019 at 6:07 pm
I’m there mainly for work inside the paint.” Zaiter’s averaging 8.9 points and 7.9 rebounds per game, nearly logging a double-double on a nightly basis. She’s shooting 54 percent from the free throw l... […]
- As helicopter logging takes off, some residents feel noise worth the benefits on February 7, 2019 at 3:30 am
The San Francisco Peaks stand out above the forests and can be seen from the houses and streets of Flagstaff. The peaks are covered with snow during the cold winters, and buzzing with hikers ... […]
- Thursday briefing: Major iOS apps are embedding secret screen loggers on February 6, 2019 at 11:52 pm
The result was a surreal farrago of misunderstanding and noise. Fake accounts would call out Turning Point’s genuine handle as a fake set up by antifa extremists, and sometimes would even go as far as ... […]
- Data Logging in the Picoampere Range on February 4, 2019 at 4:00 pm
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- Logging invades quiet neighborhood on July 24, 2018 at 9:13 pm
A lazy glaze at the fog lifting towards the heavens. A typical morning in the Timber Ridge community. It’s all interrupted by the noise of an empty log truck racing to gather its harvest from a nearby ... […]
- Editorial: Logging our state parks raises many concerns on February 17, 2018 at 9:11 pm
While supporters of the bill have noted the limits on the number of trees that would be cut down, it's hard to imagine that logging activity won't be disruptive and that park-goers will not see eviden... […]
- Logging Levels: What They Are and How They Help You on December 27, 2017 at 11:16 am
So logging requires either a balance or a way to get both the proverbial signal and the noise. And logging levels look to help with this by making your situation configurable on the fly. Here's a help... […]
- Google updates its cloud monitoring tool Stackdriver with new logging features on August 31, 2017 at 8:02 pm
“Exclusion filters allow you to reduce costs, improve the signal to noise ratio by reducing chatty logs, and manage compliance by blocking logs from a source or matching a pattern from being available ... […]
- The Industry's First MCUs with Built-In LCD Driver Optimized for Data Loggers on March 14, 2017 at 8:00 am
Story continues In response, the ML640Q464/466 provide PDF file generation and integrate key functions for USB data logging on 1 chip while leveraging LAPIS Semiconductor's expertise in low power cons... […]
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