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The perimeter at one of Europe's largest sewage works has been enhanced as part of a £190m upgrade.
Thames Water is improving Beckton Sewage Treatment Works in East London to enable it to treat 60% more sewage and allow for a 10% population increase.
Beckton covers 250 acres, or around 150 football pitches, in the London Borough of Newham and currently serves 3.5 million people, making it Europe’s largest sewage treatment works and the fourth largest in the world.
The upgrade will ensure the site can fully treat increased flows during heavy rainfall, which currently discharge into the River Thames, and additional storm flows from the Lea Tunnel, a new four-mile sewer for storm sewage that currently overflows into the River Lee.
Thames Water turned to Zaun, its long-term partner for security fencing, to secure the 4.5km perimeter with a contract in excess of £1.5 million.
Zaun installed five different types of fencing in the first phase of works, which were completed in 2014. It designed bespoke fencing to accommodate the variations in topographical environments at the site.
Posts cranked at an angle of over 45° were installed to overhang the top of a channel running alongside the river, providing a climb-resistant 1m-high barrier, preventing anyone from scaling the 5m high wall.
Zaun adapted a special 'one-sided' fencing design, which was originally developed for the nearby London 2012 Olympic Park. The product allows installation of fixings with access to one side of the fence line.
Zaun also enclosed a secure compound on the site with its acclaimed HiSec DualSkin fencing.
Phase two of the security fencing upgrade has now begun, which includes numerous gates and the same specification fencing beneath 700mm flat wrap or concertina razor wire topping.
Zaun created several special panels and bays on site to cope with severe changes in ground level and steps up onto concrete walls and bridges; and to fix fencing to existing structures as opposed to in-ground or baseplated posts.