USSR Ltd’s Test and Seal System is used to test the watertight integrity of clean structurally sound pipelines and line joints. Our Sewer Pipe Joints Sealing service ensures each sewer line section or joint is isolated using an inflatable test device called a packer. Air is injected at a controlled pressure into the isolated area and then shut off. A pressure transducer measures the isolated area pressure over a set time period. If the pressure remains constant or there is only a small pressure drop, the line or joint is considered good. If the isolated area cannot hold the air pressure, it is considered a failure and sealing urethane grout is injected into the isolated area. When located, the leaks are stopped by injecting the urethane soil sealing grout ( Joint Injection ) that stabilizes the soil and fills voids outside of pipe and stops ground water flow through the soil.
Chemical grout was first developed and applied in 1955. Since that time it has been used to stop leaks in sewers, manholes, tanks, vaults, tunnels, and many other applications all over the world. Recent studies and over 40 years of experience indicate it is still the best, most cost-effective, long-term defense against infiltration of groundwater into structurally sound sewer systems. Trust USSR Ltd. for Leak Sealing and Repair of Joints.
The following few paragraphs will give a good explanation of the Sewer Pipe Sealing process. This water-tight collar adheres to the outer surface of the pipe or manhole where it will stay indefinitely unless removed by excavation or exposed to sunlight for long periods of time. If groundwater pressures increase, the collar will be pressed even more tightly against the structure, increasing its ability to stop leaks.
Most infiltration enters structurally sound sewer systems through Sewer Joints, manholes, service connections, and the first few metres of the service lateral. The best, and most economical, way to stop these leaks is with urethane grout. Every step of the test and seal operation can be recorded on video tape to provide a permanent record of the exact condition of the pipeline. Interested parties will be able to observe the position of the packer at each joint, the results of the initial air test, the pressure and amount of grout injected, and the follow-up air test.
For more information on Sewer Joint Testing and Sewer Joint Sealing contact USA/USSR Ltd. on +353 1 4565991.