Superintendent Department of Public Works Town of Hillsborough Hillsborough, CA
Collection systems are the wastewater utilities largest asset more than the treatment plant. The US Environmental Protection Agency (EPA) estimates that there are over 800,000 miles of mainline sewer pipelines in the US and over 500,000 miles of private sewer service laterals. Each of these conveyance systems is susceptible to structural failure, blockages, and overflows. EPA estimate that $271 billion is needed to maintain and improve the nation’s wastewater infrastructure.
Trenchless technologies have become a major alternative to traditional digging for replacement for pipelines and maintenance holes. This session will use understandable approach using photo’s, videos, and case histories to cover the following: 1. Problems such as infiltration, exfiltration, roots, corrosion, and structural defects 2. The new advanced technologies available to remove heavy deposits to prepare for pipes for lining 3. Where trenchless technologies can be used. 4. The five basic styles of technologies used for replacement & rehabilitation of gravity & pressure pipelines. a. Dig & Replace b. Trenchless spot repairs c. Slipliners including continuous, sectional, and spiral wound liners d. Cured-in-Place pipe liners e. Folded and Re-formed pipe liners
1. Discuss the conditions that increase costs of maintenance and shorten the life of pipelines 2. Review the applications that require dig and replace and which are candidates for trenchless technology 3. Discover the trenchless technology options available for pipeline rehabilitation 4. Discuss the unique equipment required for different trenchless rehabilitation methods
This session will give an overview of the advancements in pipeline cleaning, inspection, and maintenance technology A toolbox of the advancements in trenchless technologies that are available to eliminate most of the general maintenance problems and extend the life of the pipelines for another 50 + years.
Learning Objectives:
Recognize what kind of sewer pipe line defects can be corrected by trenchless spot repairs or full length pipe lining
Identify what new cleaning tools are available to remove hard deposits like concrete, calcium deposits that are impossible to remove with standard jet cleaners.
Introduce new and existing options for trenchless pipe lining that can help reduce maintenance and prevent SSO