CCTV Surveys: How to find leaks and cracks in pipes...

When it comes to designing/redesigning underground drainage systems, it is extremely important that construction professionals seek a comprehensive CCTV survey to assess the condition of the existing pipework and to aid the design process. To assist you in this process, we discuss CCTV and more specifically, how we identify leaks and crack in pipes.

CCTV equipment during a survey of pipework.

CCTV equipment during a survey of pipework.

What can a CCTV survey do?

The primary purpose of a CCTV survey is to show clients the condition of foul and surface water drainage systems.  In doing so, a CCTV survey can identify a range of features. This could be cracks, holes, root incursion and joint displacement in the pipework, through to major fractures and complete collapses. 

The CCTV survey data is collected as footage, which shows the level of debris or blockages throughout the pipework. This allows us to make informed decisions for any urgent repairs. 

The above image clearly shows cracking in the pipework which has been detected by the survey.

The above image clearly shows cracking in the pipework which has been detected by the survey.

 

What happens if the CCTV footage unearths unwanted features such as cracks?

Most good CCTV survey providers (including SUMO) offer pipework repair quotations to solve issues such as:

  • Patch repairs (for cracks and holes)

  • Root cutting

  • Descaling

  • Cement clearance  

Who might need a CCTV Survey?

Any construction professional!

CCTV surveys are particularly important for clients looking to design new drainage or redesign existing drainage systems. This is because they will need to calculate capacity and flow rates using CCTV survey data. SUMO CCTV surveys are the perfect way to accommodate home-buyer report requirements.

The above CCTV Survey data shows roots which are causing a blockage in the pipework.

The above CCTV Survey data shows roots which are causing a blockage in the pipework.

 

What are the benefits of CCTV Surveys?

A CCTV survey will identify the general condition of the drains, any repair requirements, provide drainage design information and locate ‘blind’ drainage connections not normally found by a standard utility survey.

What is the deliverable?

CCTV survey reports come as a PDF file and cross-references DWG & PDF drawing formats as a standard. Deliverables are available as a digital file and are also available on paper if required. 

Raw camera video footage can be supplied on a DVD or removable media (memory stick). SUMO always upload the full information package to the cloud, so clients have unlimited and permanent access to the survey information.

This image shows a connecting pipe.

This image shows a connecting pipe.

This data image shows a displaced joint in the pipework.

This data image shows a displaced joint in the pipework.

The Equipment used:

SUMO currently has a range of different camera and crawler systems in use, depending upon the diameter of the pipes to be surveyed.  We can also hire in bigger crawlers when needed.

CCTV Surveys - How to find leaks and cracks in pipes (equipment).jpg
CCTV Surveys - How to find leaks and cracks in pipes (equipment 2).jpg

Why should you choose SUMO?

SUMO’s CCTV surveys can be fully integrated into existing topographic and utility surveys. This gives full visibility above and below ground. Or, this can stand alone as an accurate drainage survey (to Ordnance Survey Datum and Grid).

Compared to competing CCTV survey offerings, SUMO also uses its experience in utility surveys and includes drainage tracing methodology by attaching a sonde built into a push-rod and crawler cameras to accurately map the position of the drains. SUMO completes in-house CCTV surveys meaning we can tailor each survey to your project needs and budget.