Blowers are placed in adjoining manholes and a non-toxic liquid smoke is forced through the blowers into the sanitary or storm sewer. Defects in the pipe or manhole structures will create a pathway for the smoke to escape thereby identifying the location of the defects. While smoke is being forced into the sewer, field crews search adjacent areas looking for smoke. When smoke is found, all characteristics are documented including photos and GPS point.
Public notification is a very important part of the smoke testing process to minimize disruptions to the residents and businesses within the study area. Door hangers are distributed at least 48 hours in advance of any smoke testing activities to notify the public of the upcoming work. Duke’s contacts the local authorities to notify them of the upcoming days’ work. Any high priority locations such as hospitals, schools, etc. are also notified prior to smoke testing work being performed.
Duke's Insight 360 Interactive Platform
Duke’s Insight 360 is an intuitive online platform for identifying breaks and defects in sewer mains, service laterals, cross or illegal connections. With the click of a button, users can easily access comprehensive data on:
- Defect Photos
- Summary Report
Users can quickly identify problem areas and view data from anywhere with an internet connection, providing access and storage of information upon project completion allowing for efficient management of sewer systems.