acoustic pipe location Articles | Environmental XPRT

Rapid detection of sewer defects and blockages using acoustic-based instrumentation

Sewer flooding incidents in the UK are being increasingly associated with the presence of blockages. Blockages are difficult to deal with as although there are locations where they are more likely to occur, they do occur intermittently. In order to manage sewer blockage pro-actively sewer managers need to be able to identify the location of blockages promptly. Traditional closed-circuit ...

Jan. 1, 2011

By IWA Publishing

Case study - Identifying low-frequency tonal noise in windy and noisy conditions

Problem A large LNG gas facility (approximately 300m x 150m) producing 300 000 tons of LNG annually is situated in a terminal area with the nearest populated area at a distance of around 1 km. Within the gas production facility, a low-frequency tonal noise at around 500 Hz is generated causing complaints from nearby neighbours. The tone imposes a more stringent noise requirement on the facility, ...

Sep. 1, 2014

By Norsonic AS

Case study - Grand Forks wastewater authority - North Dakota, U.S.A.

Service: SmartBall - Leak & Gas Pocket Detection Client: Grand Forks Wastewater Authority Project Date: 2008 Type of Pipeline: Force Main Diameter: 30- and 36-inch Pipe Material: PCCP and PVC Length: 46,464 Feet Pressure: Results: 6 Gas Pockets In late October 2008, the Grand Forks Wastewater Authority (Authority) located in Grand Forks; North Dakota initiated a project to ...

Dec. 1, 2008

By Pure Technologies - a Xylem brand

Case study - Man-Made River Authority (MRA)

Service: SoundPrint® AFO Client: Man-Made River Authority Project Date: Ongoing since 2004 Location: Ajdabiya, Libya Type of Pipelines: Raw Water Transmission Mains Diameter: 158-inch (4 meter) Pipe Material: PCCP Length: 1,200 km Results: 35,000 wire breaks as of 2011 Libya's Man Made River With more than 4,000 km of mainly four-metre diameter prestressed concrete cylinder pipe (PCCP) in ...

Dec. 1, 2006

By Pure Technologies - a Xylem brand

For Malaysia Water Operator, NRW Leak Detection Program Recognized As Major Success

At Singapore International Water Week 2016, one of Pure's licencees presented a poster on two acoustic-based technologies (tethered Sahara® and free-swimming SmartBall®) used to locate 674 leaks on large-diameter trunk mains operated by this Malaysia water operator. Conducted over four months, the in-line inspection and resulting repairs has saved total of 46.7 million liters of water ...

Jul. 26, 2016

By Pure Technologies - a Xylem brand

Location of sound sources - Case Study

IAG offers its customers the identification and location of noise in outdoor environments with multiple sources. Through the Acoustic Camera technology, an acoustic antenna with numerous microphones, a multichannel signal acquisition system and a software for digital processing of acoustic signals, we will know which are the main sources of noise and the contribution of each of them in a ...

Jun. 20, 2019

By Ingeniería Acústica García-Calderón S.L.L. (IAG)

Case study - Woodroffe Avenue Transmission Main - Ottawa, Ontario

Service: SoundPrint AFO PureRobotics Client: City of Ottawa Project Date: 2011 Location: Ottawa, Ontario, Canada Type of Pipeline: Water Transmission Main Diameter: 48-inch (1200mm) Pipe Material: PCCP The Woodroffe Avenue Transmission Main in Ottawa, Ontario experienced a major failure in January 2011 which opened a large hole across three traffic lanes causing major traffic disruptions. Pure ...

Dec. 1, 2011

By Pure Technologies - a Xylem brand

Wastewater force main management – internal corrosion survey using inline methods

In our first post about Wastewater Force Main Management, we looked at how preliminary analysis helps operators develop a plan for managing their system. After completing this process, operators can begin putting the plan into action with preliminary surveys on specific force mains. For those at WEFTEC, you can visit Pure Technologies at Booth #1382 to find out more information on successful ...

Dec. 12, 2014

By Pure Technologies - a Xylem brand

Case study - Pinpointing low level sanitary noise in apartment building

Problem A newly built apartment building consists of several floors with multiple apartments on each floor. One of the ground floor apartments is disturbed by sanitary noise from the apartment above, which is heard whenever the toilets in the top apartment are being flushed. The sanitary noise is heard in several rooms, and the level was measured to be around 30 to 35 dB, which is above the ...

Apr. 1, 2015

By Norsonic AS

Hole Dug, Leak Found - City Of Ottawa Entrusts Smartball Platform To Look For Leaks In Tranmsission Main

When your inspection task is to survey a critical pipeline for leaks, nothing is more satisfying than trusting your technology to predict the leak location and then standing by as the client excavates the area to find a flow of water within one meter of exactly where you said it would be. The above-described "leak-where-predicted" recently happened with the City of Ottawa, when Pure Technologies ...

Jul. 25, 2016

By Pure Technologies - a Xylem brand

Acoustic emission source localisation on bone using multiple regression

A regression source location algorithm is developed to locate microcracks in bovine bone samples. Bone samples measuring 60 mm long, 22 mm wide and 5.5 mm thick were harvested from bovine femora. Artificial acoustic emission sources were created on the bone samples. The known location of these acoustic emission sources and the recorded arrival times at four acoustic emission sensors were used to ...

Nov. 15, 2012

By Inderscience Publishers

Wastewater Force Main Management – Internal Corrosion Survey using inline methods

In our first post about Wastewater Force Main Management, we looked at how preliminary analysis helps operators develop a plan for managing their system. After completing this process, operators can begin putting the plan into action with preliminary surveys on specific force mains. For those at WEFTEC, you can visit Pure Technologies at Booth #1382 to find out more information on successful ...

Oct. 3, 2013

By Pure Technologies - a Xylem brand

Preventing rain water flooding case study

SmartScan 50 helps preventing rain water flooding by providing an efficient level measurement solution in a pop. 1M city. The municipality has been struggling for years with heavy flooding of rain water during winter time that damaged large parts of the city and caused distress to its residents. As a result, a long drainage pipe was laid between the city's shore and the flooded parts. This huge ...

Jan. 12, 2012

By Solid Applied Technologies Ltd. (SolidAT)

Listening In: Smartball Detects Ancient Buried Sounds

For this leak detection survey, Pure’s innovative free-swimming acoustic tool gathered critical information about the aging pipeline assets of this historic Arabian city. This large public utility supplies bulk water to this bustling, historic resort city located in the Arabian Penninsula region. The city’s infrastructure – above ground and below – has recently been ...

Jan. 20, 2016

By Pure Technologies - a Xylem brand

Oh Honey! What an ultrasonic device can do… case study

MonoScan enables 24/7 level monitoring of liquid honey for a leading provider of honey products. The Apiary manufactures and markets natural products based on honey, bees' products and herbs. This company specializes in natural health products based pure honey, recently invested greatly in stateof- the-art equipment for its production line to achieve enhanced performance and output throughout ...

Jan. 12, 2012

By Solid Applied Technologies Ltd. (SolidAT)

City Of Vancouver Deploys Free-Swimming Tools For Successful Inline Inspection Of Pressurized Main

With its Pacific Ocean entranceway and towering backdrop of snow-dusted mountains, it’s no wonder the City of Vancouver ranks among the most laid-back, beautiful cities in Canada, and indeed, the world. Water is in its blood. This spring the coastal seaport city retained the services of Pure Technologies (Pure) to perform a condition assessment and risk analysis of the Powell-Clark Feeder ...

Sep. 19, 2016

By Pure Technologies - a Xylem brand

Underground, underwater, under stress: Town of Longboat Key puts SmartBall tool to unusual pipeline condition test

When much of your critical sewer pipeline lies buried under a bay of shimmering ocean water, the challenges required to assess its condition may seem daunting. That task faced the Town of Longboat Key, an affluent retirement community located on the barrier island of the same name off the west coast of Florida. Sensitive to environmental, health and safety issues, the Town has been concerned ...

May 25, 2016

By Pure Technologies - a Xylem brand

Ping-Ping, What’s That Sound? Acoustic Fiber Optic Technology Helps Identify Problematic Water Mains

With the deteriorating state of many aging water mains found in cities across North America, urbanites are frequently witnessing unexpected plumes of water erupt as man-made geysers in their own metropolitan backyards. While natural geysers are awe inspiring, urban geysers are much less so, due to their destruction to property, roads and the environment. Because an uninterrupted water flow is ...

Jul. 25, 2016

By Pure Technologies - a Xylem brand

Tackling Non-Revenue Water by Identifying Small Leaks

Small leaks sink big ships – the same can be said for large-diameter pipes in utility networks. While large leaks or ruptures are seen as newsworthy stories accompanied by images of water flowing down the streets; smaller leaks can often be more devastating. Left undetected, they can add up over time, contributing significantly to Non-Revenue Water, and eventually, they too can lead to ...

May 27, 2015

By Pure Technologies - a Xylem brand

Acoustically induced vibration: A review of industry best practice

WKC Partner and Noise and Vibration practice leader, Richard Palmer, has recently had an article published in the Institute of Acoustics (IOA) Journal titled ‘Acoustically Induced Vibration: A Review of Industry Best Practice’. This technical paper, which provides the reader with a better understanding of the AIV phenomenon, was published in the IOA Journal in September 2015. The ...

Sep. 22, 2015

By WKC Group