Ringsend Wastewater Treatment Plant, Dublin

Project Overview

AQL was engaged to complete active water stopping to a buried tank in Ringsend Wastewater Treatment Plant, Dublin. A large hole had developed on the side of the tank causing a massive amount of water loss. This repair would allow for the tank to be once again made watertight and restore structural integrity for many years to come.

client objectives

Plug hole in tank and ensure no leaks. Tank can be drained down for maximum 90 minutes Products must cure within a short time frame

Scope of works

AQL carried out waterproofing and active water stopping methods, including: Plugging hole- A rapid setting, waterproof, cementitious mortar solution was installed to fill the large hole. This solution goes hard within minutes and was the ideal solution to complete this repair, while causing minimal disruption to the plant. Due to this products extreme strength, this product will stand up to the test of time. Crack Injection- The cold joint between the new repair and the host concrete was then resin crack injected to ensure this joint could not allow water to exit the tank. Gasket Plate- A stainless steel plate with a rubber gasket to create a seal was then mechanically fixed over the repaired area as an extra precaution.

Challenges

Shutdown Time- The window to repair this area was only 90 minutes to allow for smooth running of the plant. This meant all works had to be completed, and material set within this timeframe. Experienced operatives and rapid setting solutions allowed this to be possible. Water Pressure- The system install had to be a system which could stand up to a large pressure of water due to the size of the tank and the location of it.

Results

No Water Ingress/Egress- The tank is now watertight, with no leaks and no chance of leaks in the future thanks to the repairs as well as the precautionary measures. Minimal Disruption- Minimal disruption was caused due to the use of rapid setting materials by highly trained and experienced operatives. No Disinfection- Due to the system used, all works could be done from the external side of the tank. This meant no disinfection was needed and no confined space crews.

Conclusion

The successful completion of this water stopping project highlights AQL’s expertise in waterproofing, resin crack injection and active water stopping across all sectors including the wastewater industry. Through meticulous planning, industry-leading materials, and specialist application techniques, AQL delivered a high-quality, long-lasting solution that ensures the tank is now sealed from any water.

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