WET News

AUGUST 2016 WET NEWS 15 The Perfect Manhole System .....everything flows! T: 01179 814500 F: 01179 814511 E: perfect@cpm-group.com www.cpm-group.com www.perfect-system.co.uk Concrete for Life Manufactured and tested to BSEN 1917:2002 and BS5911-3:2002 With over 12,500 CPM perfect bases now supplied to the construction industry are you being left behind in manhole assembly? Proven to deliver faster installation with perfect hydraulics, the CPM Perfect Manhole has no requirement for a concrete surround and is available pre-benched within days of requisition or as a plain base. Designed and manufactured from high quality durable concrete with aminimum 120 year design life the Perfect Manhole is the talk of the industry. Perfect Watertight Joint Perfect Base Perfect Hydraulics Build Faster Build Leaner Build Greener Build Quality Build Smarter Build to Last The Perfect Manhole System Delivers up to 40% savings on GHG emissions compared with traditional build The Perfect Manhole take off tool is available from our website DRAINAGE KNOCKS DOWN COSTS CONCRETE Concrete pipes can bring down your installed costs. With integrated seals, there are no hidden costs for gaskets and connectors. Less dependence on expensive granular bedding reduces installed costs and proven performance over 150 years means lifetime costs are lower too. Concrete is the undisputed heavyweight champion of drainage. Why pick a lightweight? For details, visit www.concretepipes.co.uk THE HEAVYWEIGHT DRAINAGE CHAMPION COSTS CPSA Cost ad 250x176 WETN.indd 1 22/05/2016 20:40 products)). The testing also recommends a minimum wall thickness for the lining of 2mm and in DN100 or larger pipes this recommendation increases to a minimum wall thickness of 3mm or more. The Picote Coating system is unique in that whilst it is applying a resin layer within the deteriorated pipe the resin is not sprayed onto the pipe wall but brushed. Armed with just a CCTV camera, the Picote Coating Pump, the Picote Mini Miller, the necessary accessories (brushes hoses etc.) and the two-part, the contractor is ready to complete the lining operation. First the pipeline is cleaned and if necessary degreased and abraded with Picote's Smart Cutter, or other suitable cleaning tools, to provide a good rough pipe surface to which the resin can adhere. Then the application hoses and the Picote Coating pump are prepared. It is recommended that the resin delivery hose is no longer than 15m from the pipe access to the farthest point of application. With the delivery hoses prepared and connected to the Picote Coating Pump it is then necessary to select the correct brushes to complete the application. This selection depends on the pipe diameter being lined, reference to the manufacturer's listing is necessary at this point. If the pipe being repaired contains bends it may be necessary to select a pair of brushes that are separated by a flexible link to ensure even coating through the bends. Once the brush selection has been made these are connected to the head of the Mini Miller shaŽ. The resin delivery hose is the attached to this shaŽ just behind the brush assembly. Mixed The CCTV camera head is also attached to the assembly just behind the delivery hose to allow the operator to see the coating operation as it progresses. With all in place the resin is then mixed and added to the delivery side of the Picote Coating Pump. The lining run is then ready to commence. The Mini Miller shaŽ with the Coating delivery hose and CCTV camera attached is placed into the pipe and the Pump and Miller are started. The Coating Pump delivers the resin to the inside of the pipe and as the Mini Miller shaŽ rotates this in turn rotates the brushes that spread the resin over the inner pipe wall. The coating operation is started at the end of the pipe farthest from the access point. Resin is pumped into the pipe and brushed on to the wall over lengths of between 200 to 300mm at a time. Each length of coating is then checked by pushing the brushes back to starting point and checking the coating with the camera. One advantage that the new system has over many other coating type renovation systems is that is has been designed to be applicable to both horizontal and vertical pipelines. The system offers significant improvements in performance when applying resin in vertical pipes and when passing lateral connections. With this operation the only consumables are some lengths of hose because aŽer cleaning all other parts and equipment are reuseable. Commenting on the new coating system Heikki Jyrämä, production director of Picote's trenchless services in Finland, says: "This new system is designed to be easy to handle, quick to apply and simple to use, enabling it to be utilised by all levels of contractor. The minimal equipment requirement, the simplicity of the resin handling system and the ease of application will mean that several pipes can be lined by one crew in one day, improving productivity for many companies, particularly smaller contactors. Once the basic equipment has been purchased the day-to-day run- ning cost of this technology is also minimised because the majority of the system is reused time and again." The operator's view of the coating operation underway A test pipe showing how a coating looks once the lining operation is complete

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