Cleaning and Televising
The City of Saint Paul has a proactive program for sewer inspection. In the year 2004 and continuing thru present day, the city programs citywide sewer cleaning and inspection. This program helps to evaluate, clean, inspect, and repair sewer pipes on a regular schedule, with a goal of minimizing unexpected sewer problems and emergency repairs. Engineers use sewer inspection and condition assessment data to plan and prioritize sewer infrastructure repairs.
The city initiated its Sanitary Sewer Cleaning and Televising (TV) Program in 2004 with the objective of cleaning, inspecting, and assessing approximately 80 to 85 miles of sanitary and storm sewers, including utility covers, on a recurring basis. Initially, the program focused on sanitary sewers with a 10-year inspection cycle. During the second cycle, the city expanded the program to include storm sewers, extending the inspection interval from 10 to 15 years.
This proactive maintenance program ensures regular cleaning, condition assessment, and scheduled repairs, reducing the likelihood of unexpected failures and emergency repairs.
Cleaning Process:
Sewer lines are cleaned using high-velocity jet cleaning equipment, which is deployed through upstream utility covers. The pressurized water effectively removes debris, including dirt, sand, rocks, and root intrusions, and flushes it downstream to the next access point.
Televised Inspection:
A specialized CCTV camera is inserted into the sewer system through a utility cover to conduct a detailed inspection, allowing for accurate condition assessment and identification of necessary repairs.
This structured approach enhances the longevity and reliability of the city’s sewer infrastructure while optimizing maintenance expenditures.
This program helps to evaluate, clean, inspect, and repair sewer pipes on a regular schedule, with a goal of minimizing unexpected sewer problems and emergency repairs. Engineers use sewer inspection and condition assessment data to plan and prioritize sewer infrastructure repairs.
