Covid-19 delays major repair

The repair and installation of high-pressure sludge pipelines at a wastewater treatment plant in Wellington, New Zealand has been delayed.

Wellington Water has been collaborating with an international engineering firm to develop an innovation solution for repair of the pipelines between the Moa Point Wastewater Treatment Plant and the Carey’s Gully landfill.

The repair is an engineering challenge as it must be competed within the 1.8 km section of pipeline that runs through a tunnel beneath Mt Albert.

The developed solution is a polyester woven liner that will be winches at one end of each pope to the other and expanded to act as a new pipeline within the old one.

Once in Wellington, the estimated timeframe for installation of the liner is eight days.

However, Wellington Water CEO Colin Crampton said due to restrictions imposed this week by the German government, the supplier has pushed back delivery of the liner.

“It’s a high-tech specialist product which is not manufactured in New Zealand,” said Mr Crampton.

“Unfortunately, due to the importance of protecting their workforce and community from the spread of Covid-19, production at our supplier’s factory has slowed.”

Mr Crampton estimates that the liners will arrive in Wellington by mid-May.

For more information visit the Wellington Water website.

If you have project news you would like featured in Trenchless International contact Head of Production Chloe Jenkins at cjenkins@gs-press.com.au

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