Berolina-CIPP | Booragul, NSW

PipeTech, a Downer business, is a leader in trenchless rehabilitation methods.

We specialise in the Cured-in-Place-Pipe (CIPP) process, a technique that is particularly valuable in urban settings where traditional excavation methods can disrupt traffic and community activities.

The issue

The client Sydney Trains had identified that a stormwater drain underneath one of their tracks in Booragul was experiencing deterioration, leading to concerns about capacity and structural integrity.

Given its location beneath both a busy rail track and a main road, any rehabilitation work would need to be executed with precision to avoid impacting transport services and local residents.

The solution

PipeTech utilised the CIPP – Berolina liner, which is known for its flexibility and strength. This liner is particularly effective in a number of pipe and culvert types due to its ability to conform to existing shapes.

Benefits of the Berolina Liner:

• Compatibility – works with pipes of different materials (PVC, concrete, etc.) and shapes (round, oval).
• Reduced Installation time – the trenchless method significantly cuts down on the time needed for installation compared to traditional methods.
• Durability – after curing, the liner becomes a strong, seamless pipe that resists corrosion, abrasion, and root intrusion.

PipeTech crews commenced by conducting a detailed evaluation of the existing stormwater drain, identifying any sections requiring additional attention or repair. A project plan that included timelines, equipment needs, and safety protocols was then developed.

The Berolina liner was first prepared and lubricated to ensure smooth passage through the existing pipe structure. During the installation process a winching system was mobilised to site and set up to facilitate the liner’s insertion. This system allowed for the liner to be pulled through the stormwater drain efficiently to maintain alignment and tension, minimizing manual handling and potential damage.

Once the liner was positioned correctly, UV light was applied to cure the liner in place. The curing process typically involves multiple passes of the UV light to ensure complete hardening. This step is crucial for creating a structurally sound and seamless internal pipe.

During the works, the team worked closely with local authorities to implement traffic control measures around the work site, ensuring safety for both workers and road users.

Continuous monitoring of environmental conditions and the structural integrity of nearby infrastructure also occurred throughout the installation phase.

The outcome

The successful completion of the stormwater drain rehabilitation for Sydney Trains showcases PipeTech’s expertise in trenchless technology and its commitment to providing innovative solutions that meet client needs while minimizing community impact.

The project was delivered within the planned timeframe and budget, with zero disruption to rail services and local traffic remaining uninterrupted throughout the project, demonstrating the effectiveness of trenchless technology.

By using advanced techniques such as UV CIPP with Berolina liners, PipeTech is enhancing infrastructure resilience and sustainability in urban environments.