Delivering Resilience
The Wessex Water Innovative Re-Rounder After the implementation of the transfer of private drainage to Wessex Water in 2011, it became imperative that we focus more attention on trenchless alternatives for repair of small diameter sewers. Our overall cumulative volume of public sewers doubled overnight from 17,000km to 34,000km, and the majority of that transferred stock was 150mm diameter. Julian Britton I Eng MICE, Critical Sewers Manager, Wessex Water explains the process. Wessex Water established their Critical Sewers Team in Sept 2004 at Kingston Seymour in Somerset, with the primary purposes of reducing the cost of sewer renovation interventions, using trenchless technologies where possible and mitigating the impact of our necessary works upon customers and commuters.
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As a W&Sc we attract innovators who often wish to consult us and ask for advice at concept stage, where we are able to explain how products may, or may not, fit our modus operandi. We also benefit from fully developed solutions introduced by inventors or contractors etc, but that leaves an area where we recognise an internal need, for which there
is no obvious and available solution. This was the case for the structural reformation of deformed sewers.
A greater understanding of CIPP
Wessex Water adopted the concept of renovating sewers by way of Cured in Place Pipelining (CIPP) in 1984, defined in the WRc
WATER INDUSTRY JOURNAL DECEMBER 2019