0800 873 835
New Zealand
Sub-industry
Civil Asset
Problems
Other
Location
Hamilton
Year
2024
Solutions
Water Mitigation
Technology
TamPur Resin
The Hamilton City Council looks after infrastructure assets to ensure they function well, including maintenance of the water network.
Background
An issue had arisen within the wastewater system at Hamilton Yacht Club, located on the shore of Hamilton Lake. Nearby artesian water was leaking into the wastewater pump and valve chamber, impacting performance and durability.
The Hamilton City Council engaged with Mainmark to stem the flow of groundwater and extend the life of the existing asset.
Problem
The flow of groundwater into the Hamilton Yacht Club wastewater pump and valve chamber was negatively impacting the performance and lifetime of the asset.
This site presented several challenges. First was delivering an effective water mitigation solution with an active flow of groundwater. This required a product and delivery method that would work underwater. Second, the wastewater services had to remain operational, with only a short window to turn off the asset for the work.
The fact that it was an operating wastewater station meant that Mainmark also had to use specialised personnel to complete the works.
Finally, the existing pump inlet had a large steel plate behind it, making access to the leaking groundwater limited.
Solution
The team needed a quick and efficient solution to address the unique set of issues. An on-site change to the scope of works also had to be made to work around the steel plate.
Mainmark chose TamPur Resin to mitigate the water flow — a low viscosity, silicate modified polyurea resin.
TamPur Resin is able to adhere to wet surfaces and has a fast reaction and curing time, even underwater. The team delivered this with Mainmark’s non-invasive injection technique, for a neat and efficient solution.
Mainmark overcame the challenge of the steel plate by completing works in that area using controlled set times of the TamPur Resin.
Outcome
The budget and requirements of the project were far greater than the cost of Mainmark’s solution. Mainmark was able to repair the asset for a small margin of the alternative cost, and avoid replacing the entire wastewater pump station. This method adds years of life to an existing asset, making it a cost effective solution.
