Pipes that carry waste uids, such as oil and grease, become cracked and clogged with time. When drain pipes

are rehabilitated with the Nu Drain system, the strong structural liner covers all breaches in pipes and separates

the waste uids from the pipes, preventing leaks, blockages and other failures. Nu Flow used this nondestructive

technology to complete a sanitary storm drain rehabilitation project for Toronto’s largest mall.

Project:Use the Nu Drain system to rehabilitate

failing pipes in-place without causing disruption

to a very busy shopping centre.

Site: Toronto Eaton Centre is Canada’s second

largest mall, and is located in downtown Toronto,

Ontario, Canada. In respect to the number of

guests, this shopping mall and ofce complex is

Toronto’s biggest tourist destination with about

1 million guests per week. It has more than 300

retailers and restaurants and is comprised of

1.7 million square feet of space, ve stories and

three high-rise ofce buildings. This shopping

mall was built in 1977 and has had additions and

renovations several times since construction.

System: The sanitary storm drain system, which

collects the rain water with oil and grease, runs

from the indoor parking garage and routes the

water throughout the mall. The overhead pipes

are exposed along the ceiling of a tenant’s ofce

space and are congured both vertically and

horizontally with several 45 degree bends, 90

degree elbows and Ys. The pipes are cast iron

and have 4" diameters.

Problem: The system became clogged as a result of the oil and grease from the parking lot. The oil and grease also

eventually ate through the pipes, causing leaks that damaged a tenant’s inventory.

Circumvention: Traditional pipe replacement would be very expensive, time-consuming and disruptive for this

retail centre. The store with the exposed ceiling pipes would be closed for days or weeks so that the pipes could be

torn out and replaced.

Solution: Nu Flow technicians used the nondestructive Nu Drain system to rehabilitate the failing drain lines without

causing destruction or business disruptions for the popular mall and its tenants. The leaking sanitary storm drain

line was almost fully clogged with oil and grease. Using Nu Flow’s proprietary tools, technicians rst cleaned the

drain line and brought it back to its original diameter, improving ow and overall functionality. Our technicians

worked with the customer’s in-house plumbers to remove and replace the pipe ttings. The in-house plumbers also

provided multiple access points to the pipes because of the complexity of the conguration. The work was done at

night after mall hours and was completed within four days. There was not any destruction or disruption as a result

of this project. The customer was so pleased with our work that we were asked to perform other pipe rehabilitation

projects for the prestigious property.

This is the large amount of sludge that blocked

the mall’s sanitary storm drain lines. Nu Flow’s

cutting tools were used to bring this pipe back

to its original diameter before the Nu Drain

system was installed.

Nu Flow Prevents Disruptions for Toronto’s Largest Mall

 Where life interacts with infrastructure.

North America: 1-800-834-9597 | International: 1-905-433-5510

  info@nuowtech.com | www.nuowtech.comp/n 695 v1