CASE STUDIES


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DALLAS WATER UTILITIES - LEAK DETECTION

The forensic engineers contracted to assist in remediation of this pipeline, contracted with Pure Technologies to inspect Phase I of the Lake Fork Raw Water Transmission Main using a modified Sahara system.

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HALIFAX WATER

A section of the 30" diameter LCP Halifax-Bedford connector pipeline was identified by the client as being high-risk as it operated at a relatively high pressure (over 170psi), supplied a rapidly growing community and ran past residential areas along side of a highway. It would have been difficult to remove the line from service so Halifax Water selected PipeDiver® to carry out a condition assessment of the line without dewatering or shutdown.

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BALTIMORE CITY PUBLIC WORKS INTERVENES ON PIPE SECTION ABOUT TO FAIL

In March 2012, BPW completed an electromagnetic inspection using PipeDiver® technology on the 54-inch Gwynns Falls/Southwestern Transmission Main. This pipeline already had SoundPrint® AFO monitoring installed from a 2007 project. In Summer 2012, the results from the EM inspection and an early warning from BPW's monitoring system helped prevent a major pipeline failure.

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LHPWSS MANAGES CRITICAL PIPELINE

The Lake Huron Primary Water Supply System (LHPWSS) serves about 500,000 people over eight municipalities in the London area and pumps about 44 million gallons of water per day (170 million liters). Its major transmission main was constructed in 1966 and made of 48-inch (1200-mm) Prestressed Concrete Cylinder Pipe. In October 2012, LHPWSS completed a leak detection survey and electromagnetic (EM) condition assessment of its major transmission main to proactively address deterioration on the pipeline. A subsequent verification of the EM data was completed in January 2013.

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TRINITY RIVER AUTHORITY VERIFIES CONDITION OF C303 PIPELINE

After completing leak detection and structural condition assessment on 8.5 miles of PCCP and Bar-Wrapped Pipe, Trinity River Authority verified the results of inspection, finding and repairing three distressed BWP pipe sections in July 2013.

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BIRMINGHAM WATER WORKS BOARD IDENTIFIES 26 LEAKS USING ADVANCED INLINE LEAK DETECTION

In early 2012, the Birmingham Water Works Board (BWWB) ran a successful leak detection program on 7.7 miles (12 km) of 42-inch (1050-mm) Reinforced Concrete Pipe (RCP). The inspected pipelines are part of BWW’s system that transports water from the Shades Mountain Filter Plant to different areas of the city. The inspected pipeline was constructed in 1927 and has a typical operating pressure between 60 and 90 psi. BWWB completed the inspection to proactively address water loss on its large-diameter water transmission mains.

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WOODROFFE AVENUE TRANSMISSION MAIN - OTTAWA, ONTARIO

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 and the client developed a plan almost immediately post-break as Pure’s expertise in pipeline condition assessment and repair recommendations were directly in line with what the client needed.

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PETER LOUGHEED PROVINCIAL PARK - ALBERTA, CANADA

Several other technologies failed to identify the location of the leaks that were known to exist within a small distribution main feeding a collection of small homes and cabins in the Kananaskis region of Alberta. This polyethylene line of 6-inch diameter pipe also had limited drawings and features available for insertion and extraction.

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HETCH HETCHY WATER AND POWER PROJECT (SFPUC)

San Francisco Public Utilities Commission (SFPUC) operates three parallel cement mortar-lined steel pipelines 47.5 miles long, otherwise known as the San Joaquin Pipelines, which range in size from 56- to 78-inches in diameter. In 2008, the SFPUC contracted Pure Technologies to perform the in-line "smart pigging" inspection of the lines utilizing advanced MFL technology.

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