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Water Pipeline Case Studies

	City of Ottawa - SoundPrint Install and Robotics 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.
	City of Rockville - Robotic Inspection Pure Technologies (Pure) was contracted to provide a robotic inspection of a critical 24-inch prestressed concrete cylinder pipe (PCCP) transmission line for the for the City of Rockville’s Department of Public Works (DPW). The City’s single 10 mile-long transmission main system traverses from the Potomac River to the Rockville city limits before branching off into the distribution network.
	Dallas Water Utilities - Condition Assessment Since 2005, DWU has been interested in a condition assessment of the 72" Stuart Simpson line, a nearly 50 year old large-diameter PCCP main, but has faced a lot of challenges.
	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.
	Denver Water - Electromagnetics Denver Water serves a population in excess of 1.1 million people in the Metro Denver area and operates over 2,600 miles of water transmission mains. Denver Water was one of the first utilities to implement a Condition Based Asset Managment program for its prestressed concrete cylinder pipe (PCCP) pipelines.
	El Paso Water Utilities (EPWU) - Robotic Inspection In June 2005, Pure Technologies conducted a non-destructive evaluation of two areas of the Roseway Water Transmission Main using electromagnetics. As this pipeline is too small for manned entry, Pure Technologies elected to use it a robotic inspection tool called PipeCrawler.
	Halifax Water - PipeDiver 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.
	Hetch Hetchy Water and Power Project (SFPUC) - Magnetic Flux Leakage 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.
	Man-Made River With more than 4,000 km of mainly four-metre diameter prestressed concrete cylinder pipe (PCCP) in operation, the Man-Made River pipeline is the one of the largest water projects in the world.
	Maynilad Water Services - Leak Detection Maynilad is the water and wastewater services provider for 17 cities and municipalities that comprise the West Zone of the greater Metro Manila area. The work included the use of Sahara® leak detection, in addition to video inspection on a major pipeline system.
	Metropolitan Water District of Southern California (MWD) - Electromagnetic Inspection MWD Pipeline system was constructed over several decades; its system is comprised of pipe from several different manufacturers, in various classes, with varying diameters. In response, and in keeping with its reputation as one of the world’s most proactive utilities, MWD established an Infrastructure Reliability Program with a mandate to maintain the integrity of this complex system.
	North Texas Municipal Water District - Sahara Leak Detection One of NTMWD’s pipelines is a 42" reinforced concrete main that supplies water to NTMWD’s southern service area. District staff knew that this line had a leak as water was surfacing in the intersection of Jupiter and Beltline, a very busy intersection in Dallas County.
	Peter Lougheed Provincial Park - SmartBall Leak Detection 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.
	The Philadelphia Water Department (PWD) - Sahara Leak Detection The Philadelphia Water Department (PWD) has focused on water loss management programs for the past decade and is well known for its annual water audit and for pioneering new methods such as the use of District Metered Areas (DMA) and advanced pressure management. In 2007 PWD also began to use the Sahara system for precise leak location on its large diameter water transmission mains.
	San Francisco Public Utilities Commission (SFPUC) - Sahara Leak Detection The San Francisco Public Utilities Commission (SFPUC) provides water to 2.4 million people in San Francisco, Santa Clara, Alameda and San Mateo counties. It serves 29 wholesale water agencies and delivers approximately 260 million gallons of water per day to its customers through a 280-mile pipeline network.
	Tarrant Regional Water District (TRWD) - Electromagnetic Testing The Tarrant Regional Water District (TRWD) is a raw water supplier that serves ten counties in north central Texas. Most of the 1.5 million people served by the District are in Tarrant County, which includes Fort Worth and surrounding communities. In 2001 the District delivered over 366,000 cubic feet of water to its customers.