Water and Effluent Treatment Magazine
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20 WET NEWS April 2014 INSIGHT A GRP UV cured pipe lining system has been the tech- nology of choice for a culvert running beneath the A30 north of Bodmin. A solution: UV cured CIPP pipe lining T he latest name in UV cured CIPP pipe lining is iLine (part of the i-Group of companies), which offers a management and contracting team that can draw on a wealth of experience in the CIPP pipe lining industry. Working in virtually all pipe- line sectors, the company uti- lises the latest GRP UV (Glass Reinforced Plastic Ultraviolet) cured pipe lining system that offers liners that are some 40% thinner whilst being over three times stronger than conven- tional felt liners. One area in which the GRP UV liners show significant advantages is that of culvert rehabilitation. To ensure continued opera- tion of its trunk routes the UK's Highways Agency is undertak- ing an ongoing programme of work to ensure that culverts running beneath its roadways continue to operate effectively and efficiently. A recent project completed as part of this programme was the lining of an old ARMCO cul- vert running beneath the main A30 trunk route to the north of Bodmin in Cornwall, close to Bodmin Racecourse, which was undertaken to strengthen it for future operations and to ensure that it continued to be able to handle the increasing traffic flows on this major tourist route into the far South-west. The lining project was awarded to iLine Technologies, which was required to design a suitable lining to meet the needs of the culvert refurbish- ment whilst minimising disrup- tion to the road operation. Low footprint With project consulting engi- neer Kate Sutton, and given the ground investigation results and traffic loading information procured, iLine proposed to uti- lise a CIPP lining technique with Ultraviolet (UV) curing for the 58m long lining run in the 1,000mm diameter culvert. The design called for a liner wall thickness of 9.3mm. As well as offering a quick, low footprint site operation, as compared to other CIPP options, including hot water cure and steam cure, the UV option was also deemed to be far more environmentally- friendly with less potential for pollution down-stream of the site due to the absence of run- off wastewater subsequent to the cured liner being opened at the culvert ends post-curing. The UV equipment used for the installation was an REE2000 curing unit supplied by Reline Europe, which on this occasion utilised a UV light source com- prising of six, 2,000 watt UV bulbs. The liner itself was also pro- vided by Reline Europe and was precisely manufactured and fac- tory impregnated with the UV sensitive resin to fit the lining run. The lining project started on September 9, 2013 and was com- pleted with the iLine crew off the site three days later. The challenge: Trenchless technology The beauty of the UV system in situations such as this is its speed of opera- tion. On the first day, the crew mobilised to the project and set up the necessary equipment and work site. On Day 2, civil works to remove the old head wall on the culvert were com- pleted, and on the last day, subsequent to inspecting the culvert to ensure it was clear to line, the UV liner was installed in just eight hours, including the curing process. On the day of lining, work started at 8am. The liner was inverted into the culvert using compressed air. The UV light train was then inserted, the liner re-inflated and the curing run started. On average the cure was completed at a speed of some 6m every ten minutes or a complete cure in under two hours. Disruption The only aspect of the project that involved outside agencies was that a land agent had to be contacted because the down- stream section of the culvert ended in a farmer's field with the farmer having to be informed of the works. The upstream section of the culvert lay within the boundary of the highway so did not cause a problem. Commenting on the project for the client, a representative of Enterprise Mouchel says: "Our thanks go to iLine and its crew which undertook and completed a very tidy job. We are very pleased with the out- come of the project, in particu- lar the lack of disruption to the public, traffic flows above the culvert and especially the elimi- nation of the potential for pol- lution that can arise using other CIPP systems. Overall it was a quality job completed to a high standard by an experienced, well-man- aged crew. We will be passing on our comments to our manag- ers and QS team." According to John Beech, business development manager for iLine: "Some of the biggest A view through the completed liner Preparing the UV cured liner for insertion • "Some of the biggest advantages of using the UV method utilised here were the speed of the installation, with the whole project being completed in just under four days" John Beech, business development manager, iLine advantages of using the UV method utilised here were the speed of the installation, with the whole project being com- pleted in just under four days and the fact that the use of the UV also meant that, given the proximity to farm land, the potential for pollution was eliminated from the site because no liquid run-off is generated using the UV system." Beech says: "UV lining is a technique that is currently not the most widely available in the UK as there are only a few installers using the system. We at iLine pride ourselves that we have crews that are some of the most experienced in the field in the UK today with numerous successful projects under their belts." n APRIL 2014 WET NEWS 21 Allen Watson Trenchless solutions specialist www.allenwatson.com The company offers horizontal directional drilling, guided auger boring, micro tunnelling, pipe jacking and thrust boring techniques. The company owns the widest range of modern trenchless equipment, and has completed thousands of trenchless crossings in all ground conditions. Lanes for Drains Drainage contractor www.lanesfordrains.co.uk The company has adopted trenchless sewer replacement, and uses this method for sewer renovation and rehabilitation. It often trials new materials and techniques, working closely with international manufacturers. Perco Trenchless technology specialist www.perco.co.uk The company operates in the utilities, construction, rail network and facilities management sectors. It uses techniques including guided auger boring, horizontal directional drilling and pipe bursting, as well as installs new pipelines and cable ducts and refurbishes existing pipe networks. The company also manufactures pipe-bursting and pipe replacement systems for use by other trenchless technology specialists. Specifiers file: be altered to adapt to various soil conditions and provides smooth and constant propulsion; particularly useful at the start of the bore process and during alignment. With a simple quarter turn of the air hose, retrieval of the GRUNDOMAT N is ensured, even when up against impenetrable soil conditions. The Sizes range from 40 to 180mm diameter, with the length of the bore being relative to the diameter of the machine; the pipe / cable to be installed and prevailing soil conditions. The small diameter GRUNDOMAT Ns perform well within the requirements for both commer- cial and domestic utility service connections and are used over a wide variety of applications; with bore lengths in excess of 30m. EZiSYSTEM xf Cable locating & tracing the EZi way Cable Detection Ltd T: +44 (0)1782 384630 E: sales@cabledetection.co.uk www.cabledetection.co.uk The EZi solution for locating and tracing deeply buried services over long distances. • Protect your workforce • Reduce cable strikes • Avoid costly and time consuming repairs Invest in your workforce's safety by investing in the EZiSYSTEM xf cable & pipe locating & tracing tools. May 5–9, 2014 World's Leading Trade Fair for Water, Sewage, Waste and Raw Materials Management Welcome to the future of environmental technology Be a part of this get-together of the worldwide environmental technology sector— at IFAT 2014 in Munich. Come and experience innovative new products and learn about successful strategies for the future. And benefi t from the exclusive supporting program at IFAT and the opportunity for international networking. Register now online! Save up to 30% and gain time at the venue! www.ifat.de/tickets/en presented by IFAT CHINA | EPTEE | CWS Visit IFAT's sister events around the world: May 20–22, 2014 October 9–11, 2014 www.ie-expo.com www.ifat-india.com www.ifat.de Information: Pattern Limited | London Tel. +44 20 3375 8230 | info@pattern.co.uk Mole Group Horizontal directional drilling www.moleuk.com Our Horizontal Directional Drills and Impact Moles can be used for a huge range of underground installations. We work with major contractors and companies directly to carry out their underground pipe, cable and ducting installations quickly, efficiently and with minimum disruption. Trenchless Solutions No-dig contractor www.trenchlesssolutions.co.uk The company is a No-Dig contractor working throughout the UK and Ireland. It offers advice and expert solutions working with customers from conception through to completion. It specialises in guider auger boring, horizontal directional drilling, moling, auger boring, and pipe-bursting. U Mole Specialist rental equipment www.groundforce.uk.com The company holds main distribution / agency / representa- tive agreements with leading suppliers including Earth Tool, with its Hammerhead range of bursters, moles and rammers; MTS and Vac-Tron for suction / vacuum excavation equipment; REED tooling; Robbins for SBU equipment; Pipe to Site coil trailers The GRUNDOMAT N is self-propelled using compressed air and a two stroke impact method. Whilst in operation should an obstacle be encountered and forward propulsion hindered, the crowned reciprocating head will continue chiselling independently; until the obstruction is fragmented and displaced. This design drives the percussive Grundomat mole fast and accurately through the ground, displacing and compacting the soil, whilst at the same time forming a bore hole through which pipes and cables can be pulled in simultaneously. The GRUNDOMAT N has a triple gear control stud, with the frequency and speed of the striking impact being chosen via two forward gears. This means that boring speeds can The kit: Soil displacement hammer TT-UK www.tt-uk.com