The following images and videos show examples of remote video inspections of underground drainage systems. These can include oily water sewers, storm water sewers, chemical sewers, water lines, vaults & catch basins, tailings off-takes, clean-outs and many more collection systems. The majority of the inspections were carried out using a range of explosion-proof robotic crawlers , PTZ camera heads and DVR push systems.
Storm Water Line
This line had been backing up, and collapse or fouling was suspected. As this video shows, the cause of the blockage was two wooden boards stapled together.
Storm Water Sewer Damages
This video shows an old storm water sewer (SWS) system from the 1960s with internally damaged reinforced concrete pipe (RCP). Erosion appears to be the culprit from years of high pressure water discharge and flow. This channelled effect has split the pipe between the 5 to 7 o'clock position. Engineers and consultants used this video inspection information to determine the next steps for repair or replacement.
Fire Water Line - Heavy Encrustation
In this video of a 50 year old fire water line, significant mineral deposits are apparent. The European-designed crawler used for this inspection has auto-levelling features to prevent the crawler from flipping over.
Underground Culvert Collapse
A large video inspection crawler was used in a abandoned 60" diameter underground culvert to verify whether any deformations existed. The video inspection clearly showed significant deformation with one area of collapse. Using this information, engineers determined the best approach for repairs.
Concrete Storm Water Line with Defects
This video shows a 42" newly-installed concrete storm water sewer with 2 areas of concern. One defect is at the 6 o'clock position of the pipe at the joint with a crack. The other defect is at the 5 o'clock position at the joint with water infiltration due to poor sealant contact.
Chemical Sewer Piping Build-up
This video shows build up hanging at the joints of a chemical sewer piping. A tripod-mounted pan, tilt & zoom (PTZ) drop camera was used for a quick look before deploying crawler or push-type systems.
Manhole Tap-in Connection Without Sealant
An explosion proof pan/tilt/zoom (PTZ) camera was used to inspect the manhole basin. The tap-in connection does not appear to have a seal, and groundwater is evident entering the basin around the connection. Maverick has noted this type of defect in connection with subsurface erosion and voiding around catch basins and manholes. Ground-penetrating radar (GPR) is often deployed in connection with remote video systems for these applications.