Louisville Water Pipediver Large Diameter Insertion
In the past, inspections required such mains to be taken out of service, thus disrupting continuous service to customers. The pipeline may have been damaged during a pressure surge in 2009, prompting the utility to assess the main’s integrity.
The PipeDiver took five hours to travel from the B.E. Payne Water Treatment Plant through the main at an average velocity of 2.75 ft/s to a large water tank near North English Station, passing four 60″ butterfly valves in the 41-year-old PCCP pipe. This is the second phase in an 11-mile inspection project that started in May 2011 with a 2.5 miles robotic inspection, and will continue in October 2011. The PipeDiver tool is best suited for prestressed concrete lines as its electromagnetic sensors assess defects in the metal wires that give the prestressed concrete of the main its strength as it travels through the pipe.
Specifically designed for structural assessment of Prestressed Concrete Cylinder Pipe (PCCP) lines that are live or can’t be taken out of service due to a lack of redundancy or operational constraints.
Large diameter prestressed concrete cylinder pipelines (PCCP) are a significant investment for many water and wastewater agencies. Assessing and monitoring the condition of these pipes is becoming an increasingly important and challenging task.
Pure Technologies is helping utilities manage their buried infrastructure through its Assess & Address which can often be implemnented for only a fraction of the capital replacement cost.