Client: Anglian Water
Principle Contractor: GTM Galliford Try & Imtech
Contractor: Ward and Burke & Aquatic Engineering
Duration: 6 days
Date posted: 21-01-2013
Anglian Water have taken serious actions to help boost the supplies to the city of Lincoln; one of which is the construction of a water treatment plant capable of pumping 20 million litres of clean water to it each day.
Abstracting water from the River Trent, just outside the village of Newton-on-Trent which sits on the Lincolnshire / Nottingham border, the new Hall Water Treatment Works is being built by GMT. This is a joint venture by partners Galliford Try and Imtech, performing the larger projects under the AMP5 program which runs until 2015 with an overall value of £44M.
Aquatic Engineering designed the silt containment curtain to encapsulate the works. Our team of divers installed the curtain and ground anchors in the furious flows during the heavy rains we had at the end of 2012. Ward and Burke built and installed a 16 ton framework to brace the 60 sheet piles, creating a cofferdam to undertake the riverside works also inside the silt curtain in the dry.
MMC divers returned this January in the cold ice and snow conditions to remove the steel weights and burn underwater the remaining sheet piles using Broco. A number of piles were also cut topside using oxyacetylene by our on-site team, as the river levels dropped making the water too shallow in areas to submerse the diver.