Mobile Crawler Unit

How does a CCTV pipeline inspection work?

The problem with pipeline inspection used to be that pipelines, by their very nature, are usually buried below ground, making it difficult to inspect them to locate damage.

A CCTV pipeline inspection solves this problem by inserting a mobile CCTV camera unit into the pipe where it reaches the surface, and then exploring the length of the pipeline until the problem is discovered.

Depending on the problem, this could include damage to the pipe itself such as a crack, leak or collapse, or it might be something non-structural like a blockage that needs to be cleared.

Until you take a look up close it’s difficult – if not impossible – to know exactly what damage has occurred and whether the pipeline will need remedial work to restore it to a good state of repair for the future.

The added advantage is knowing what remedial action or maintenance is required also means you can better control costs and obtain quotes specific to the particular scheme of work involved.

At hebs Group we have sophisticated CCTV pipeline inspection cameras so we can view damage and blockages that occur far below ground, without excavating the pipeline.

These cameras are mounted on rugged remote-controlled units that can drive along the pipe to reach the damaged section, with a long tether back to ground level.

It’s a fast and effective way to get a first-hand view of pipeline conditions both above and below ground, from inside the pipe.

Why use CCTV pipeline inspection?

It’s crucial to visualise damage from inside the pipe for a true image of what work needs to be done.

CCTV pipeline inspection can be used on everything from small diameter pipes right up to large diameters like sewers.

It does not damage the pipe – no digging or cutting is required – and it allows us to recommend the best course of action to repair or unblock the pipe.

Depending on the desired outcome, we have a variety of trenchless pipe repair and rehabilitation techniques to choose from, including:

  • Pipe bursting to lay wider diameter pipes in place of older narrower pipes.
  • Cured-in-place pipe (CIPP) where a repair liner is applied to the damaged pipe then cured to form a permanent fix.
  • Primus Line, a flexible high-pressure lining used to rehabilitate industrial high-pressure pipelines.

Trenchless repair can be much faster and less costly, and avoids excavating land that may have structures of value on it at surface level.

But you need to know what repair work needs to be carried out, which is why CCTV pipeline inspections are such an important step in the process to a fixed and free-flowing pipeline.

If you require emergency maintenance repairs or services, contact hebs Flowtech at or call 0151 236 0707.

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