Overview

CCTV drain surveys and sewer surveys are one of the most common tasks performed. This is due to their use in quality control. Allowing us to assess the situation of pipelines before and after performing other services. These include, but are not limited to,

  • UV CIPP.
  • Robot cutting and HPWJ.
  • Flow and effluent monitoring.
  • GIS Mapping and Network Studies
  • Lateral drain repair – Top hats

How it’s used

The McAllister Group can use CCTV when first surveying sites. This allows us to identify structural and serviceability problems as they exist in sewers, drains and culverts before considering any repair or remedial solution. It is vital to have as much knowledge as possible about the existing system and pipe. With this, we make informed decisions to minimise costs and ensure success.

Typical issues the surveys will identify include:

Structural Issues

  • Open or displaced joints
  • Cracks
  • Fractures
  • Breaks
  • Deformations
  • Collapses

Service Issues

  • Root ingress
  • Buildup of scale
  • Encrustation
  • Debris
  • Obstruction

Equipment

We have van mounted crawler unit systems and mobile flexi-rod cameras. This equipment enables surveying of various diameters, lengths and depths of pipe encountered.

All units operate with WinCan VX  software. We then produce reports and drawings in multiple formats. This includes WinCan databases, Infonet files, schematic diagrams, GIS layers and dwg files.

Our Service 

We have van mounted crawler unit systems and mobile flexi rod cameras to suit the various diameters, lengths and depths of pipe encountered.

All units operate with WinCan VX  software allowing for the provision of reports and drawings in multiple formats including WinCan database and Infonet files to schematic diagrams, GIS layers and dwg files.

Our Process

  • Create a safe working area and position equipment appropriate to manhole location and customer vehicle routes / working areas.
  • If appropriate clean pipe being surveyed using appropriate jetting technique and equipment.
  • Put camera in the pipe at correct lens height, set pipe length to zero and use appropriate chamber naming convention.
  • Survey the pipe, recording all observed defects and associated observations.
  • Put the survey through quality assurance checks.
  • Publish and deliver to customer in an agreed format.
  • Contact the customer immediately if any major defects or unexpected results are discovered.

Requirements

  • Safe chamber access / entry in relation to size of pipe, chamber and equipment being used.
  • Duration varies in relation to pipe depths, lengths and the access points.
  • By exception, over-pumping / tankering for high flows.
  • 100mm – 1800mm diameter.
  • 1200 – 1800mm use man entry survey.

What will you get from a CCTV survey?

The key to successful pipe problem investigation and resolution is the initial investigation works. Consequently, a detailed and quality pipe camera inspection is critical.

On completion of the survey, we can normally assess the cause of the problem. As an example, let’s take the installation of a new drain lining. It’s a straightforward task, whose basic requirements before starting are;

  • The pipe is free of obstructions or diameter reductions.
  • The pipe’s characteristics are fit-for-purpose.

If there are obstructions, it may be possible to remove them using very high pressure water jetting or robotic cutting techniques. Pipes that have collapses or been crushed are rarely suitable for lining. Though a spot excavation repair could possibly be carried out for the defective area.

The CCTV inspection should only be carried out by technicians trained to the latest MSCC standards. Standard practice within the industry is to provide a video file and classification report in Wincan or equivalent format, with individual defects scored in addition to full length summaries.

Typical issues the surveys will identify include: –

Structural Issues

  • Open/displaced joints
  • Cracks
  • Fractures
  • Breaks
  • Deformations
  • Collapses

Service Issues 

  • Open/displaced joints
  • Cracks
  • Fractures
  • Breaks
  • Deformations
  • Collapses

Why choose the McAllister Group for CCTV Surveys

While industry standards are important for training and quality assurance, what you want from the survey is what matters to us. Consequently we will find out what you want and present it in the format or formats that best suit your purpose

All our staff have routinely completed, assessed and checked CCTV surveys for their entire careers. They are focused on providing you with solutions, not producing reports.

We work with all the relevant software providers, have a range of well supported camera equipment and our waste water supply chain gives us a wealth of additional knowledge to examine, interpret and propose solutions to unusual issues identified by surveys.