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what is video inspection

Author:Sally|Editor:Eric|Time:Wednesday on Dec 13, 2017|Page View:

Video inspection in the context of trenchless technology is the process of inspecting underground water and sewer pipelines for damages, leaks and obstructions. Closed Circuit Television (CCTV) is mounted on crawlers that are guided through the pipelines by an operator above ground. Some cameras even allow pan and tilt options for detailed inspection of damages and pipe connections.

Modern innovations in video inspection of pipes allow for tilt and pan for closer inspection, fish eye lenses that enable 180 degree view at any point, laser systems to measure the pipes profile and sonars for flooded pipe sections or inverts.

Pipe video inspection is a form of telepresence used to visually inspect the interiors of pipelines. A common application is to determine the condition of small diameter sewer lines and household connection pipes.

Older sewer lines of small diameter, typically 6-inch (150 mm), are made by the union of a number of short 3 feet (0.91 m) sections. The pipe segments may be made of cast iron, with 12 feet (3.7 m) to 20 feet (6.1 m) sections, but are more often made of vitrified clay pipe (VCP), a ceramic material, in 3 feet (0.91 m), 4 feet (1.2 m) & 6 feet (1.8 m) sections. Each iron or clay segment will have an enlargement (a "bell") on one end to receive the end of the adjacent segment. Roots from trees and vegetation may work into the joins between segments and can be forceful enough to break open a larger opening in terra cotta or corroded cast iron. Eventually a root ball will form that will impede the flow and this may cleaned out by a cutter mechanism and subsequently inhibited by use of a chemical foam - a rooticide.

With modern video equipment the interior of the pipe may be inspected - this is a form of non-destructive testing. A small diameter collector pipe will typically have a cleanout access at the far end and will be several hundred feet long, terminating at amanhole. Additional collector pipes may discharge at this manhole and a pipe (perhaps of larger diameter) will carry the effluent to the next manhole, and so forth to a pump station or treatment plant.

Borescope Video Inspection Cameras are systems that combine a camera-tipped probe with an LCD monitor for viewing live video and saved video clips and photos of hard-to-reach places. With our high-performance video inspection camera product line, you can choose the probe type (wired, wireless or articulating) and diameter (as thin as 3.9mm, or 4.5mm, 5.5mm, 8.5mm, 9mm etc.). Or, let us do that job by configuring a borescope video inspection camera system just for you.

Benefits of using a video inspection camera

Along with finding the exact location of the break, the camera provides us with a number of other aspects that are vital to solving your issue. We can find out what material the drain is made of, the condition of the material, and whether or not the break is in one specific location, or if the whole line needs to be replaced; more importantly, how significant the break is. Although the camera is more commonly used once a problem has already occurred, it can used to help pre-screen homes before they are sold, in order to confirm that a sewer is in good condition.

 


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