CML

Corrosion and buildup are plaguing the pipelines of water authorities everywhere. Leakages are increasingly common, flows are inhibited, and the pumping expenses keep climbing higher. Meanwhile, the funding for replacing pipes rarely exists — even for this most essential commodity.

Spiniello's SpinCo Cement Mortar Lining (CML) process delivers a new lease on life for any pipe. With our centrifugally applied lining, clients can get new pipeline performance at a fraction of the cost of replacement. In addition, we offer a Reinforced CML process for structural rehabilitation.

Advantages
Using our specialized equipment, the SpinCo CML process can restore almost any pipe — cast iron, steel, concrete, brick, asbestos-cement, corrugated metal or even wood stave pipe, in diameters from 4 inches to more than 22 feet. Plus, we can apply the lining to new steel pipe to provide a continuous, smooth surface. Our "in place" CML application:

• Eliminates interior corrosion. The CML creates a zone of high pH — a chemical shield that permanently prevents rust from building up, and removes the threat of leakage.


• Offers high compressive strength. Unlike linings that rely on bonding or adhesives, the CML has an inherent "arch action" that provides tight contact with the pipe wall.


• Increases carrying capacity. The protective qualities of the CML restore and maintain the flow capacity at new higher levels for years to come.


• Lowers operational costs. With restored flow and lasting interior protection, the CML decreases ongoing maintenance and pumping costs, as well as fire insurance rates.

To restore structural integrity, our Reinforced CML process applies layers of lining with reinforced steel rods. This empowers us to rehabilitate large-diameter pipes — 30 inches in diameter and larger — with test pressures as high as 400psi.

How It Works
Our SpinCo CML process typically includes the following steps:

• Step 1: Divert the flow. Following strict quality controls and safety practices, we establish a bypass system to maintain uninterrupted service. Learn more.


• Step 2: Clean the pipe. Depending on the project, we use hydraulically propelled, high-velocity jet, or mechanically powered equipment to clean the pipeline. This removes all dirt, grease, rocks, sand and other obstructions.


• Step 3: Design the reinforced liner. For a structural rehabilitation, we analyze the internal pressures to determine how much steel reinforcement is required. We also design the liner to withstand the external loads of two passing trucks, based on criteria from the American Association of State Highway and Transportation Officials (AASHTO).


• Step 4: Line the pipe. We centrifugally apply the CML in controlled layers up to 5/8 inches in thickness. A series of rotating trowels then finish the lining.


• Step 5: Apply reinforcement, as necessary. We size our reinforcement rods outside of the main, slide them into the pipe and secure them. Then, we apply at least two more passes of 5/8-inch, troweled CML to complete the reinforced liner.

Spiniello completed its first CML project in 1946, and the pipeline is still running strong. Bring the power of our proven technology to your own rehabilitation.