32 · Members in Action
D & D Autumn 08
SANDVIK HAMMER BRINGS END TO CEMENT WORKS
Brown & Mason, one of the UK’s leading demolition contractors, is using a Sandvik BR7013 hydraulic breaker to demolish a former cement works in the heart of the garden of England.
A massive seven tonne Sandvik BR7013 (formerly a Rammer G 130) hydraulic breaker is playing the lead role in the demolition of a former cement works in Kent as part of a project to make way for a development that will include new homes and leisure facilities. Owned and operated by heavy demolition specialists Brown & Mason, the breaker supplied by John F Hunt Plant Hire, dealers for Sandvik Hammers in London, Kent & Essex, develops an impressive breaking power and is mounted on a 60 tonne class Komatsu PC600SE hydraulic excavator.
The cement works at Northfleet opened in 1970 by Blue Circle Industries and had the capacity
to produce over a million tonnes of cement per year. The works were supplied by Eastern Quarry which was taken other by Lafarge in 2002, becoming Lafarge Cement UK. The works and quarry were closed down in 2008 and both sites will be redeveloped as a mix of homes and leisure facilities over the next
three years as part of the huge Thameside development. The site covers a staggering 320
hectares of which the plant covers approximately eight hectares. To put that into perspective, the site is over twice the size of the nearby Bluewater retail development, the largest shopping mall in Europe.
Contractor Brown and Mason is the primary demolition contractor on a project with a six-month programme that started in June and is scheduled to end in November. Works began with a Type 3 survey to identify and isolate any remaining asbestos which was found only in the roof panels. The site to be cleared is the cement processing plant situated at the South East corner of the quarry. This consists of the former wash mill, six slurry tanks, three clay tanks, mill buildings, pump house, plinth plant, concrete hoppers, concrete crusher plant, compressor house and the sorting plant. The offices are to be retained to provide site management buildings, as is an electrical sub-station.
Brown & Mason’s Lee Brown reports that the slurry tanks represented one of the projects largest, single challenges. Standing 15 metres high, the tanks were manufactured from 500 mm thick concrete that was heavily reinforced with a huge amount of steel rebar. “The tanks are really tough so we needed a hydraulic breaker that was equal to the task,” Lee Brown says. “We’ve mounted it on a 60 tonne carrier to enable it work at maximum power. These tanks would normally take weeks to break out but thanks to the Sandvik breaker, they’ve been demolished in half the time.” In line with the rigid health and safety controls in place on the site, the hammer utilises the Rammer CITY sound
suppression system. For reduced wear on both the breaker and carrier, vibration dampening is improved and tool diameters are increased. The use of a dust proof housing, dust proof tool retaining pin locking system and the Ramlube automatic lubrication system also helps reduce wear and extend working life. “The breaker is the biggest Sandvik Rammer in the country, you don’t need to see the breaker in action to realise how powerful it is, you can actually feel it in action,” Lee Brown concludes. “The Sandvik BR7013 is unquestionably the best breaker we’ve ever bought. There is nothing else like it on the market at the moment, and it’s certainly the only breaker powerful enough to take down these tanks.”
Centurion Works · Balmuildy Road Glasgow G23 5HE T 0141 762 2111 · F 0141 762 4111 Contact - George Barclay 07768 846683 firstname.lastname@example.org www.whiteinchdemo.co.uk