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ISSUE 28

DIRECT PIPE INSTALLATION FOR GAS MAIN BEATS MONSOON RAINS

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FOR INDIVIDUAL NEWS SECTIONS THIS ISSUE: CONTENTS PAGE click here INDUSTRY, COMPANY AND INSTITUTION click here PIPE JACKING & MICROTUNNELS ETC click here IMPACT HAMMER TECHNOLOGIES click here PIPELINE REHABILITATION click here PIPELINE ONLINE REPLACEMENT click here ASSET MANAGEMENT & SURVEY click here SUPPORT EQUIPMENT AND ACCESSORIES click here EVENTS AND MEETINGS click here

TRENCHLESS WORKS IS THE ON-LINE NEWS AND INFORMATION SERVICE FOR THE TRENCHLESS

INDUSTRY ENDORSED BY BOTH THE UNITED KINGDOM SOCIETY FOR TRENCHLESS TECHNOLOGY (UKSTT)

AND THE INTERNATIONAL SOCIETY FOR TRENCHLESS TECHNOLOGY (ISTT)

DECEMBER 2008

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T RENCHLESS

W ORKS

Insituform Technologies Ltd

Manufacturer and contractor for Gravity & Pressure &

Lateral Pipe Renovation & repair (inc CIPP, Close Fit PE

& Localised Lining), GRP Lining, Surveying & Cleaning,

Manhole Construction & Renovation, Pipe bursting and

Guided Auger Boring.

TT-Group: A leading manufacturer of Trenchless Technologies: Moles, Pipe

Rammers, HDD, Pipe Replacement and Auger boring systems and NoDig-equipment

TT Group

C J Kelly Associates Ltd Independent pipeline

renovation consultant and UK representative for Prokasro,

Saertex, KOB, MC Chemicals and Terra AG.

VMT GmbH Supplier of TBM, Microtunnel,

Pipe Jacking and Tunnel excavation Navigation &

Guidance systems & Services.

Suppliers for hire or sale of: Vac Ex, Moles & Rammers, Bursting, Coil Trailers, SBUs

and Accessories.

U Mole Part of Vp plc

Herrenknecht

Manufacturer of TBMs, Pipejacking, Microtunnelling, HDD and Support Equipment

and Engineering Services.

http://www.ukstt.org.uk

http://www.istt.com

http://www.insituform.co.uk




http://www.tracto-technik.com

http://www.cjkelly.com

http://www.prokasro.de/en/fs_english.html

http://www.saertex-multicom.de

http://www.brawoliner.com

http://www.mc-bauchemie.de

http://www.terra-eu.eu

http://www.vmt-gmbh.de/

http://www.umole.co.uk

http://www.herrenknecht.com

ARTICLES BY NEWS/TECHNOLOGY SUBSECTION PAGE INDUSTRY, COMPANY AND INSTITUTION NEWS Warrior Launches Latest Trenchless Solutions In The UK link 3 Private Sewers and Drains to Transfer Ownership link 3 Insituform Blue® Wins Project in British Columbia link 4 PIPE JACKING, MICROTUNNELLING, TUNNELLING & AUGER BORING GRP Jacking Pipes For Gravity/Pressure Conversion link 5 Godavari River Crossing - A Race Against The Monsoon link 6 WIRTH Now Part of Aker Solutions link 7 IMPACT HAMMER TECHNOLOGIES Minimising Disruption On A Residential Water Pipe Replacement link 9 PIPELINE REHABILITATION A First For Yorkshire Water In Trenchless Pipe Repair link 11 ONLINE PIPE REPLACEMENT New England Residents Follow Replacement Project link 12 ASSET MANAGEMENT AND SURVEY Laser Profiling of Pipes Inches Its Way Into Canada link 15 SUPPORT EQUIPMENT AND ACCESSORIES Jetting and Lubrication Pump for Akkerman GBM link 16 McElroy Unveils New Low Profile Rollers link 16 UKSTT NEWSLETTER UKSTT Annual Dinner and Awards 2009 details link 17 EVENTS Registrations Open link 18 EVENTS DIARY link 19

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WARRIOR LAUNCHES LATEST TRENCHLESS SOLUTIONS IN THE UK Whilst many may think nothing of another company launching a range of trenchless solutions into an established UK market, Warrior’s launch of its range of pipe bursting and thrust boring equipment, already very successful in the USA, is claiming that it will ‘shake up’ the industry. These products are claimed to be fast, easy to use, more portable and much more competitive than any other machine in their class; delivering benefit to both the user and the customer.

What is more, the portability and compactness of these products opens up new areas of work; creating opportunities for pipe installers and repairers. Warrior Worldwide also offer a range of finance options including outright purchase, finance leasing and hire, so the industry can only benefit.

The Warrior range is designed for underground pipe installers and repairers that find excavation problematic and disruptive, reinstatements expensive and environmental considerations increasingly important. When Warrior spoke to installers and repairers they found that they perceived traditional solutions too difficult to operate, and that they have been put off by the need for additional plant; these factors combined mean that profitability of jobs is not achieved, therefore trenchless solutions have not been adopted at the same rate as other markets.

Warrior’s easy to use, simple to transport range removes digging problems, minimises environmental disruption, and requires no expensive transportation or lifting equipment. The whole operation is easily completed by two operatives working from a van. Warrior is so confident in its product it offers a nationwide support and breakdown service.

The Warrior range has a successful 30 year pedigree in the USA. Over the past 18 months the company has been researching the European market and has launched the first of its product range; the WR-33 in the UK. This is a pipe bursting machine with an installation rate of 2 m/min. The Warrior WR33 is a fast and efficient underground pipe replacement system that offers a very cost effective alternative to open trenching. The WR33 uses hydraulic rams to pull a wire cable attached to a bursting head through an underground pipe. The bursting head is slightly larger in diameter than the pipe causing the existing pipe to burst apart as it is pulled through. The new pipe to be installed is attached to the rear of the bursting head.

Warrior also provides interactive training workshops (Warrior, Client or On-site based) backed up by fully mobilised, professional customer support teams for your assistance as and when required.

Warrior claims that by bringing another major player with such a strong success rate in the US to the market has got to be good news for the UK drainage industry and will offer an alternative cost effective solution for consideration when tackling underground pipe work repair or replacement, when only a limited number of companies operate in this market across the UK and Europe.

Tony O’Brien, Managing Director of Warrior said “This is an exciting time for Warrior, we have had some amazing feedback from Contractors and Utility organisations we have been working with and we are already receiving great interest in our introductory seminars. We would have to say to anyone who has had problems with pipe bursting or thrust boring in the past to pick up the phone and call us as we are happy to help anyone with any queries about trenchless solutions.” Website: www.warriorworldwide.com

PRIVATE SEWERS AND DRAINS TO TRANSFER OWNERSHIP

T he UK’s Department for Environment, Food And Rural Affairs (National) (DEFRA) has made the not unexpected announcement that approximately 200,000 km of privately owned sewers

and lateral drains in England will be transferred to water and sewerage companies from 2011, removing millions of householders from the risk of expensive repair bills.

Currently, if a private sewer or lateral drain needs repairing, the bill is picked up by householders, even if the problem is outside their property boundary. Most householders do not even know the sewer or drain is their responsibility as it is not apparent when buying a property. It is also unlikely

INDUSTRY, COMPANY AND INSTITUTION NEWS AND RESEARCH

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Trenchless Technology Industry. www.nodigmedia.co.uk


Perforator Ltd Sales and Hire of Guided

Auger boring and Pipebursting systems and tooling.

The Warrior WR-33 pipe bursting unit (right) with its power pack (top), recently launched into the UK pipe replacement market.

WIRTH. Efficient performance you can trust.

WIRTH

http://www.warriorworldwide.com

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that insurance policies will cover wear and tear. It is estimated that well over half of all houses in England have a private sewer or lateral drain, the part of a drain that lies outside the property boundary.

According to Environment Secretary Hilary Benn: “Millions of householders are unwittingly sitting on the ticking financial time bomb of private sewers and lateral drains. They may not realise it, but if something goes wrong they have to pick up the bill. The transfer to water and sewerage companies will create a fairer system for all and save many households the agony of finding thousands of pounds to pay for repairs.”

There are approximately 300,000 km of public sewers in England operated and repaired by water and sewerage companies. A further 200,000 km of pipework connects to the public system but, by default, remains the responsibility of householders they serve. Many people will be unaware that they own the sewer or lateral drain until problems occur. This can result in people having to find thousands of pounds for repairs or relying on contributions from neighbours as the sewer will serve more than one property.

An extensive review of private sewers began in 2001, prompted by the concerns of householders and a consultation in 2003 revealed a high level of support for transfer. DEFRA looked at how this transfer could be achieved in a further consultation in 2007. The costs of transfer will be met by an increase in the sewerage element of bills across the nine sewerage companies currently estimated to be around 7.5 pence to 23 pence a week.

INSITUFORM BLUE® WINS PROJECT IN BRITISH COLUMBIA

I nsituform Technologies, Inc., through its Canadian subsidiary Insituform Technologies Limited, has been

awarded a $4.4 million contract from the City of Victoria in British Columbia, Canada. Insituform will use its PuraGuard™ technology, a close-fit polyethylene solution for water pipe renewal, to rehabilitate 4.5 km (14,750 ft) of high pressure steel pipes, ranging in diameter from 200 mm to 610 mm (8 in to 24 in).

PuraGuard™ is part of the company’s Insituform Blue® line of products for the trenchless rehabilitation of potable water lines. Unlike traditional open cut methods of renewing water pipes, trenchless techniques repair pipelines with little to no digging, disruption or environmental impact.

The City of Victoria has a history of promoting environmentally sound practices. In addition to Insituform’s minimally disruptive and environmentally friendly method of rehabilitating transmission mains, the city has also retained a professional arboriculturalist to help protect the trees on the job site.

Insituform will rehabilitate an integral part of the city’s water transmission system, which is located mostly in residential areas, requiring increased coordination to maintain service to the city and to communicate with residents.

“Insituform has rehabilitated sewer pipelines for the City of Victoria in the past, and we look forward to continuing our productive partnership in the future. We are confident that our customer service and superior water main rehabilitation methods will meet the high standards the City has set for us,” said Ken Foster, Vice President, Canada.

Insituform will complete the work in Victoria in 26 installations, rehabilitating 4.2 km (13,900 ft) of 508 mm (20 in) diameter, 168 m (550 ft) of 610 mm (24 in) diameter and 91 m (300 ft) of 200 mm (8 in) diameter water pipelines. Work began in late November and is expected to be completed in August 2009.

INDUSTRY, COMPANY AND INSTITUTION NEWS AND RESEARCH

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PuraGuard™ is Insituform Blue’s family of close-fit pressure pipe rehabilitation systems.


WIRTH









GRP JACKING PIPES FOR GRAVITY/PRESSURE CONVERSION

E nvironmental aspects and future-oriented thinking led the

municipality of Groningen in the Netherlands to plan an extension an existing DN 1000 and DN 1200 main sewer pipeline. It was found that the gravity sewer could not cope with high flow rates that were occurring during for example heavy rainfall. To prevent sewage flows from overflowing and polluting the environment the authorities decided to convert the existing gravity system into a closed pressure sys-tem. With this and the extension of the network anew higher capacity of 3,000 m3/h will be achieved. This would mean that the new pipeline would easily cope with future needs as well as connection of a further village. The new extension to the pipeline was to be 2.4 km long and would utilise HOBAS CC-GRP Sewer Systems pipe for the jacking installation operations required

The route of the new pipeline crosses a busy part of Groningen town and HOBAS proposed the utilisation of its CC-GRP Pressure Pipes which can be installed in open cut as well as using trenchless construction. Local engineers decided to use the HOBAS CC-GRP and placed an order worth €1,222,000 for the complete pipeline requirement.

The project included five pipe jacked sections which required the use of HOBAS CC-GRP Jacking Pipes from DN 1000 to DN1500 and PN 6Pressure Pipes of DN 1000. Also included was 1600 m DN 1200 pipe as well as flanges, elbows, reducers and tees with stainless steel locked joints. Five different contractors were assigned to complete the work with a sixth engaged to rehabilitate a pumping station.

Several obstacles that existed along the pipeline route, such as roads and a waterway, were overcome by using microtunnelling techniques. Due to the requirements of the road authorities two jacking sections running beneath the highway were undertaken using with ‘cover’ pipes which were also procured through HOBAS Benelux. The HOBAS CC-GRP Pressure Pipes were subsequently inserted into the ’cover’ pipes on completion of the drive. The largest pipe installed ran beneath highway A7 and had an o.d. 1,500 mm.

Three other microtunnelling sections were completed using CC-GRP PN 6 pressure jacking pipes with flush FWC couplings. These ran beneath a gas pipeline, a main road, several streets and a

navigable waterway with the installation being made at a depth of 12 m. A 275 m long section using 1,280 mm o.d. CC-GRP pressure jacking pipes was jacked with a curve radius of 1,300 m. The contractor decided to install an intermediate jacking station which, according to safety standards, is required for jacking operations where the jackng force is likely to exceed 4,000 kN. Due to the smooth and non-absorbing outer surface of the HOBAS Pipes, their light weight and constant outer diameter, the maximum jacking force on the drives did not exceed 1,800 kN. The intermediate station was never put into operation.

The advantages of the HOBAS pipe were found to be its corrosion resistance, low weight, fast installation, long lifetime, low maintenance costs and its availability as a complete system from one supplier. Website: www.hobas.com

PIPE JACKING, MICROTUNNELLING, TUNNELLING & AUGER BORING

For General Information on Pipe Jacking, Microtunnelling, Tunnels & Auger Boring click here










TT Group






and Accessories.




Herrenknecht



Several obstacles along the new pressure sewer pipe route, such as roads and a waterway, were overcome using microtunnelling techniques.

The HOBAS flush couplings utilised for the jacking operation are leak tight and facilitate easy assembly.


WIRTH

http://www.hobas.com

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GODAVARI RIVER CROSSING - A RACE AGAINST THE MONSOON

I ndia wants to become increasingly independent of energy imports,

increasing the share of natural gas in its use of primary energy from the current 8% to 20% in 2025. In order to reach this target, a network of state and privately owned pipelines and regional distribution networks is currently being built, stretching over ever larger parts of the country. The first large-scale project in connection with this is the East-West pipeline which is planned to bring gas from the deposits in the Krishna Godavari Basin off India’s east coast to the cities in the west. This pipeline, due for completion in mid 2008, was con-structed with the help of high-tech equipment made by Herrenknecht in Schwanau, Germany and will then be one of the main arteries of the national gas supply network.

The pipeline, approximately 1,400 km in length, is an impressive project that transverses the Indian sub-continent from the city of Kakinada on the east coast in a west-northwesterly direction to Ahmadabad near the west coast. The client was Reliance Gas Transportation Infrastructure Ltd., one of the numerous subsidiaries of the giant Indian group, Reliance, which grew out of a small textile factory in the 1970s. Reliance has now developed into a conglomerate which is important, on the stock exchange too, and now focuses its business on the energy sector.

Herrenknecht machines played an important role in one of the first complex sections of the pipeline, from the start in the east, crossing beneath the Godavari River which flows into the Bay of Bengal in the Federal State of Andhra Pradesh, geographically around the middle of the east coast. Some 2,400 m had to be excavated, interrupted at about the half-way point by an island which exists only in the dry season. The planned diameter of the protection tunnel for the installation of the 1,200 mm (48 in) pipeline was 2.4 m.

NO TIME FOR FLOODS The particular difficulty in the project was the extreme time pressure, because the project had to be completed during the low-water period. As the Godavari carries extreme high water during the monsoon rains and repeatedly causes floods. The commissioned construction company, Züblin International GmbH, had only three months to complete tunnelling.

First, the tunnel specialists built two launch shafts on the river banks, each with a depth of 12 m. A 30 m deep target shaft followed on the river island. Finally, the two EPB2400AH tunnelling machines with a drilling diameter of almost 2.9 m each began tunnelling. EPB Shields (EPB = Earth Pressure Balance) are particularly suitable for soft and cohesive geologies with a high proportion of clay. Under the Godavari River they worked in the dual mode configuration, which can be refitted to the slurry mode for coarse, highly water-bearing and instable ground conditions. The installed slurry












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Herrenknecht



The Herrenknecht Pipe Thruster pushed the 1,200 mm (48 in) diameter gas pipeline into the completed protection tunnel.

The target shaft was located on a river island, so the project had to be finished under extreme time pressure before the monsoon rains started and the island was flooded again.


WIRTH












firebox connects the screw conveyor with a slurry circuit, including feed and slurry lines, and conveys the excavated material into the slurry circuit. The machine can continue tunnelling safely in the slurry mode.

Under time pressure, 1,150 m had to be excavated from the east to the target shaft, and from the west, 1,250 m had to be bored. The TBMs worked using the pipe jacking procedure. Hydraulic cylinders in the launch shaft and intermediate jacking stations distributed along the pipe string, push the machine forward, including the ever growing pipeline made of concrete pipes, which followed the machine. After work was completed, the two machines were lifted to the surface from the central shaft. The machine used in the east then had to drill a 75 m sloping tunnel from the eastern launch shaft to the surface for the subsequent installation of the pipeline.

This pipeline installation was also carried out with a Herrenknecht machine, an HK250/500PT Pipe Thruster . In contrast to the conventional procedure in which a pipeline is installed with cable winches, an HK250/500PT Pipe Thruster uses thrust and pulling forces. This procedure is quicker than conventional installation while still allowing careful and safe installation of the pipeline in the protection tunnel, an aspect which was particularly important for this project. The two hydraulic cylinders of the Pipe Thruster are capable of providing a maximum thrust of 500 t.

At the Godavari River, the Pipe Thruster required less pressure than that. Two pipeline strings of approximately 1,500 and 1,000 m in length and with an overall weight of approximately 2,000 t had to be installed in the Godavari tunnel. They had been welded together before on the river banks. The Pipe Thruster pushed them into the concrete tube with an average thrust of 80 t and a maximum speed of 5 m/min. After only five months the tunnel was completed and the pipeline installed, and then the monsoon rains could come. Website: www.herrenknecht.com

WIRTH NOW PART OF AKER SOLUTIONS

S ince August 2007, Aker MH AS has been a 50 % shareholder of WIRTH GmbH. Aker MH AS is

an affiliate of the Norwegian mixed enterprise Aker Solutions ASA. The business within Aker Solutions comprises several industries, including Oil & Gas, Refining & Chemicals, Mining & Metals and Power Generation. This consolidation with a strong partner strengthens WIRTH’s position in the international markets, also for Mining and Construction markets which, includes Tunnelling and Microtunnelling technologies.

As a result of this growing investment, WIRTH is re-launching into the microtunnelling market building on the success of the delivery earlier this year of a new DN1500 machine to F & B Ltd of Doncaster, UK. WIRTH hopes this is the first step towards gaining a good market position and a point to build on for future success.

WIRTH Microtunneling gained a presence in the market in 2000 when Soltau joined WIRTH to bolster the already established product lines of directional drilling, vertical drilling and mining alongside tunnelling.

In the last few years WIRTH has worked on new designs for DN1500 and DN1800 equipment, meaning more reliability and efficiency as well as being competitive to other manufacturers. Making the name of WIRTH, ‘Efficient performance you can trust’.

The DN1500 machine delivered to F & B Ltd in May 2008 marked the start of the new campaign to the market.

The project was for work on a new 35 mile long, 1,200 mm (48 in) diameter gas pipeline for National Grid. F & B was subcontracted by Laing O’Rouke to complete several road, rail and canal












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Breakthrough of the Herrenknecht TBM at the target shaft.

A WIRTH microtunnelling unit being prepared for a recent project in the UK.


WIRTH













crossings running from Asselby, south of Selby, through to Pannal, just west of Weatherby in North Yorkshire. The diameters of the crossings ranged from 1,250 mm to 1,800 mm. The 1,800 mm o.d. pipeline ran under the main Selby to Leeds rail line carrying passenger and freight services and was completed with the new WIRTH DN1500 machine. The soil conditions consisted of very stiff clay which underlay a very wet silt material meaning control against over-and under excavation was paramount not only to the success of the project but also to the satisfaction of F & B Ltd and National Grid.

Very strict monitoring was carried out on the line as the machine passed under and the strict tolerances for movement of the line was maintained, meaning the line remained open the whole time the drive was undertaken.

Production peaked at 20 m in a 12 hour shift which, considering the soil condition was exceptional proving the efficiency of the new slurry discharge system designed by WIRTH. When the machine emerged from the tunnel the original paint was still on the cutting tools.

WIRTH Microtunneling provided full support on site to ensure maximum efficiency and performance. Website: www.wirth-europe.com


For General Information on Pipe Jacking, Microtunnelling & Auger Boring click here










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MINIMISING DISRUPTION ON A RESIDENTIAL WATER PIPE REPLACEMENT

U Mole (a division of VP plc) of Gt Gransden, Cambridgeshire recently hired a 50 mm diameter,

pneumatic HammerHead impact mole to Dyno-Rod Southampton (J A F Services Ltd) and Dyno-Plumbing for the completion of a project to replace a leaking water main.

The work required the use of the mole to bore beneath a residential driveway in Christchurch, Dorset. Using the company’s philosophy of embracing new technologies to minimise disruption and inconvenience to its clients, Dyno-Rod Southampton decided that the project was well suited to the use of moling techniques which would allow the replacement pipe to be installed without the need to excavate the customer’s tarmac and concrete driveway. Planning of the works was undertaken by Dyno-Rod’s Justin Duale.

The problem with the original water main came to light when the customer realised his water bill was unusually large. Investigation showed this to be due to the leaking water main supply pipe feeding his property. The obvious fix would have been to excavate and replace the whole pipeline. However, given the location and the surface construction of the driveway, Dyno-Rod was sure that a more convenient, quicker, more cost effective and less destructive option was to utilise trenchless technology in the form of an impact mole.

EQUIPMENT CHOICE When it came to choosing the equipment for the job, the contractor went for the hire option. A 50 mm diameter, pneumatic HammerHead mole, supplied by U Mole (a division of Vp plc) was selected as the best option available to install the new 12 m length of standard 25 mm diameter MDPE pipe. According to Andy Findlay, director of Dyno-Rod Southampton: “We chose the HammerHead mole because of its reliability and the knowledge that we would get excellent backup and technical field experience from U Mole. Matt Russum, from U Mole customer support brought the mole to us and undertook a familiarisation and training programme with us to ensure that we used the unit to its best efficiency. He also provided site supervision during the course of the work.”

The installation required just one entry and one exit pit as it was only a 12 m long run. Prior to the installation and pit excavations, a ground investigation and utility tracing survey was undertaken

from surface in the immediate vicinity of the works to ensure that there would be no conflict with other existing buried services. In the event, the whole installation project from arriving on site, completing the survey and digging the start and reception pits to installing the pipe and reconnecting the supply was completed without incident in one working day at a cost to the client of just £1600 plus VAT. Something that would not have been achievable if traditional excavation techniques had been utilised.

Andy continued: “The combination of U Mole’s technical experience and choosing of the HammerHead equipment made the job far easier than we first imagined. The end result was just what the customer wanted, a reduction in water bill and piece of mind that there would be no foreseeable leaks for the future.”

IMPACT HAMMER TECHNOLOGIES For General Information on Impact Hammer Technologies click here

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The driveway in Christchurch beneath which the new water pipe was installed using the HammerHead impact mole.

The new 25 mm diameter MDPE pipe being installed behind the HammerHead mole as it advances.

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HAMMERHEAD MOLES The 50 mm diameter HammerHead mole used by Dyno-Rod for the Christchurch project is just one of a family of HammerHead moles available for hire or for sale from U Mole. The full range offers key features including:

• 50 mm – 200mm diameter range • High impact performance • Robust and simple to operate • Active Head availability on units up to

75 mm diameter • Rear bulbed machines available • Simple maintenance • No special tooling requirements • Replaceable internal air seals • Patented rear anvil • ¼ Turn and multi-turn reverse • Full range of towing accessories • Suitable for piling & ramming • Full factory warranty

The moles are suitable for work including the laying of gas, water, utility duct and cable through virgin ground without surface disruption as well as specialist crossings including Rivers, Motorways and Railways. Operating at air pressures of 7.6 bar with air consumption across the range varying from 509 l/min (18 cfm) for the 50 mm diameter moles to 8,700 l/min (308 cfm) for the 200 mm diameter moles, the units are very efficient yet powerful in most compactable ground conditions.

Accessories are also available to suit direct towing of PE and PVC pipe or duct as well as launch cradles, aiming frames and staffs. U Mole also offers consumable support products and the availability of mini-compressors. As on the Christchurch project full on-site training and support is also available.

OTHER EQUIPMENT U Mole is the approved UK distributor for Earth Tool equipment and offers their full range of products for trenchless installation and pipeline replacement for either sale or hire. These include: Active and standard head HAMMERHEAD™ impact moles (earth piercing tools), HAMMERHEAD™ ramming hammers, other HYDROBURST™ rod-based, hydraulic pipe bursting systems and the PORTABURST™ cable-based, hydraulic pipe burster range.

The company is also the representative for The Robbins Company in respect of the Robbins SBU (Small Boring Unit) product line, including provision of all spares and consumables within the SBU range. The territory across which U Mole acts in this capacity includes: France, Belgium, Holland, Denmark, Sweden, Norway, UK and Eire.

U Mole also supplies a full range trenchless and limited dig equipment including: MTS/ Vac-Tron vacuum excavation systems, coring equipment for keyhole technology, Pipe to Site coiled pipe trailers, Acuster plastic pipe fusing systems, Rotair compressors, Reed Tools and a complete range of accessories such as pipe Cobra flexible rodding, towing heads, cable socks, pipe pigs, swivels, breakaway connectors. Website: www.umole.co.uk

IMPACT HAMMER TECHNOLOGIES For General Information on Impact Hammer Technologies click here




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The small size of the access pits means minimum disruption to both the client and the surrounding area.




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A FIRST FOR YORKSHIRE WATER IN TRENCHLESS PIPE REPAIR

D igging up Yorkshire’s roads to fix leaking water pipes or bursts could become a thing of the past thanks to

Platelet Technology® being pioneered in the water industry by Yorkshire Water.

On Thursday October 30, 2008 the company performed a world first by repairing a leaking pipe from the inside using the revolutionary new technique.

The concept works by inserting Platelets® into a water pipe through points on the network to seal the leak from the inside without the need to interrupt customers’ supplies or dig up the road. Originating from the medical concept of platelets in the human bloodstream, the technology has the potential to revolutionise the way leaks are repaired and reduce Yorkshire Water’s impact on customers.

“We had already set ourselves the target of achieving zero interruptions and zero excavations in the highway by 2010 which meant we were on the lookout for technology which would help us to achieve this,” said Simon Barnes, head of innovation at Yorkshire Water.

“Since 2006, we have reduced holes in the road by 14,000 and the time those holes are open by 50%. Customer supply interruptions have also been reduced from 700,000 in 2005 to 169,000 last year. This is a huge achievement but we knew, to achieve zero, we had to think differently about the way we do things.”

Until now, leaking pipes and bursts have been repaired in much the same way as they always have been, often involving road works and temporary traffic lights. The new concept, conceived by Brinker Technology for use in the oil and gas industry, has been developed in partnership with Yorkshire Water for use on the water supply network.

Mr Barnes added: “We are trialling the technology now to understand its potential to repair different types of bursts. Because its use does not require us to dig holes in the road to get to the leak, there are lots of benefits to be had in repairing difficult-to-access problems like those under busy railway lines or roads. The future benefits of the technology are huge; from the day-to-day repair of bursts to the reduction of leakage levels and holes in the road. It will being the repair and maintenance of the water network into the 21st century. The Platelets® have undergone and passed stringent British Standard tests for materials that come into contact with drinking water and we carried out extensive consultation with Ofwat, the Drinking Water Inspectorate and the Consumer Council for Water before carrying out the trials.”

Andrea Cook, Chair of the local watchdog, the Consumer Council for Water Northern, said: “We welcome this initiative which will make people’s lives easier. There will no longer be a need to switch off a consumers’ supply while work is completed and there will also be reduced disruption on the roads. We believe customers of Yorkshire Water will see this as a great benefit.”

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Yorkshire Water performed a world first by repairing a leaking pipe from the inside using Platelet Technology®




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NEW ENGLAND RESIDENTS FOLLOW REPLACEMENT PROJECT

D riving into the picturesque New England village of Northport, Maine,

USA for the first time along its narrow, winding streets is likened to entering a storybook setting. Meticulously landscaped yards surround decoratively painted cottages of blue, yellow and pink in colour and clad with ornate trim work. Many of the houses are individually named and identified by rustic, hand-painted signs.

Located on Maine’s rugged eastern coast and home to approximately 1,500 residents, Northport is a resort community comprised mostly of seasonal dwellers. The place is so remote that the majority of Maine’s 1.4 million residents have never heard of it.

Those who make Northport their year-round residence go to great lengths to maintain the quaint integrity of this historic community which has roots that date back to the early 1600s with the arrival of a contingent of French explorers. So it is not surprising that when Matt Timberlake and his crew arrived in town to tackle an intricate sewer pipeline rehabilitation project, the locals took an interest.

“You have to understand the dynamics of the community to fully understand this project,” Timberlake said. “I do not remember a time in the history of our company when a condition for accepting our proposal included a provision to educate affected residents about the process of how we would complete the project so homeowners understood exactly what was going on. The whole community got involved.”

Timberlake is vice president of the family-owned and operated Ted Berry Company, headquartered in nearby Livermore, Maine. Ted Berry Company has been in business for over 35 years and specializes in offering diverse methods of completing infrastructure installation and rehabilitation projects. Timberlake had worked with the Northport Village Corporation since 2005, when Ted Berry Company was contracted to implement an ongoing inspection of the town’s sewer system. During one of their routine inspections, Timberlake’s crew discovered a section of pipe that had become infiltrated by root growth.

LOCATION, LOCATION, LOCATION According to Timberlake, the project was a textbook case for a pipe burst operation. The affected sewer line originated from a residential street at its upper end, continued under four private residences, wound between two other homes, and ended at a manhole located within 7.6 m (25 ft) of the high tide mark of the Atlantic Ocean. Although the sewer discharge pipeline was only about 60 m (200 ft) in length, the beginning and ending manholes were not within view of each other. Excavation was a concern at the downstream end, given its proximity to the ocean and the highly visible Northport Yacht Club.

“Many things told us this was not an excavation job,” Timberlake said. “There were established trees and shrubs, walkways, lawns, patios and decorations to contend with. Had we ploughed a trench, we would have had to dig right alongside the foundation of a couple of these homes. The long-term effects that disturbing a foundation may cause brought a whole other set of potential

ONLINE PIPE REPLACEMENT For General Information on Bursting, Reaming, Cracking, Eating and Pulling click here










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The Northport project called for the use of pneumatic pipe burst techniques, a method that allowed the contractor to preserve the downstream manhole near the Atlantic Ocean shoreline and eliminate the need for excavation.

A HammerHead HG12 winch positioned on the lower end of the pipeline guided the bursting head through the existing pipe.

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issues. Trenching was just not an option.” Timberlake and Trenchless Technology Supervisor Shawn Ready quickly came to a consensus on the best work method, but the details of the plan took a bit more time and included stipulations that were somewhat unconventional compared to proposals the two had drawn up in the past.

“Although the village Corporation had a legal easement to go through individual properties in order to maintain the sewer, their first concern was how repairing it would affect the residents,” Timberlake said. “Explaining how we would complete the project to the affected homeowners and getting their buy-in made it an easy sell to the council slated to approve the job.”

The plan Timberlake and Ready proposed included going door-to-door with a representative of the village Corporation to explain to residents exactly what needed to happen and how it would be accomplished. By doing so, Timberlake and his crew immediately won over the locals.

In order to preserve the downstream manhole near the shoreline and eliminate the need to employ excavation, the plan Timberlake and Ready devised called for pneumatic pipe bursting techniques to be employed. Although the company had completed 40 to 50 or so static bursts in the past, this would be the first pneumatic burst for Ready and his crew. Therefore, Ready consulted with Brian Cowles, Ted Berry’s HammerHead representative, for guidance during the pre-planning phase and to ensure his crew was well-versed in the project details before getting started.

“We had travelled with Hammerhead to several pneumatic jobsites over the previous couple of years, so we were very familiar with the process,” Timberlake said. “It was not really anything all that new. Some of the details of the pneumatic hammer, however, were things that internally we spent a great deal of time planning in advance. HammerHead was a tremendous help.”

Timberlake went on to explain that the project would have been very easy to complete using static equipment, but he did not want to take any chances removing the downhill manhole or digging that close to the shoreline.

“Protecting the integrity of the site was important to us,” Timberlake said. “Nobody from the village Corporation actually told us we had to do it a certain way. But we knew the smaller the footprint we left meant they would be more apt to have us back. That is just how we do business.”

After many hours of planning followed by a day of preparation, the burst commenced at 9:00 a.m. on a November morning. Ready and his crew had positioned a HammerHead HG12, a 12 t winch, on the lower end with an 200 mm (8 in) diameter pneumatic hammer and a 250 mm (10 in) diameter bursting head at the topside. Using the ‘Manhole Exit Method’, a process patented by HammerHead, eliminated one excavation at the manhole, decreasing the amount of excavation necessary by 50%. By lunchtime, the burst had been completed and the new pipe was in place. By early afternoon, backfilling was complete and services were restored.

“The job was completed in under four hours,” Timberlake said, “and witnessed by what we affectionately called the ‘advisory committee’ made up of local residents. One of the homeowners

was present when we dug the topside launch pit on his property. He had approximately 60 plastic pink flamingos randomly situated on the site. I have pictures of Shawn reposition-ing each flamingo back to its original spot from a map created prior to initiating the burst. Most were facing east, but there were a few that faced west. We made sure that we replaced each of them in their original spots, and facing the correct direction.”











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Shards from the old pipe in an access pit show how the bursting operation works.

The bursting assembly followed by the new pipe is attached to the winch cable prior to the start of the bursting operation.










TIPS FOR OTHER CONTRACTORS Whilst proud of the work his crew performed on the Northport project, Timberlake viewed the process as just another example of how Ted Berry Company approaches every job. Whilst a pneumatic burst project was uncharted territory for the company, Timberlake has some valuable advice for other contractors.

“Do not be too proud to ask for help,” he said. “Contractors are typically bad at that. We have been in business long enough that we know we do not know everything. But we have connections to people that have the know-how when we are in need of technical support. Like our relationship with HammerHead, for example, they were onsite from start to finish assisting with completing our company’s first pneumatic burst.”

Timberlake is also a firm believer in involving all interested parties in the project, not only his own crew, but the supervisors, project managers and the affected residents.

“Educate the public,” Timberlake said. “A lot of times we show up on these jobsites and the public is standing there looking at us. We make it a point to go out of our way to knock on doors and let people know what we are up to. I think contractors as a whole need to get better at that.” Timberlake also makes a concerted effort to involve all his people. “Before we even presented the proposal to the Northport Village Corporation, the entire crew that was to be involved in the project had studied the proposal and knew their individual responsibilities,” Timberlake said. “By involving all our people at that level, they get to look at it [the proposal] in advance and offer comments or suggestions about things we may have missed. The level of understanding of the job by all those on our crew who are to be involved almost guarantees a successful end.”

Aside from all the planning, the calculations, and the gratification of a job well done, it is the approval of local residents that means the most to Timberlake. “I understand their anxiety,” he said. “I know how I would feel if a bunch of guys in vests and hard hats were to invade my property with all this equipment and not knowing what was going to happen. We never lose sight of that. I guess the biggest compliment to come from the Northport job was when the guy who was there when we first started the burst later renamed his home ‘Sewer View Cottage.’ We laughed about it at the time, but afterward, it really sunk in just how monumental that was.” Website: www.hammerhead.com











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http://www.hammerhead.com










ASSET MANAGEMENT, MAPPING & SURVEY For General Information on Asset Management, Mapping & Survey click here


LASER PROFILING OF PIPES INCHES ITS WAY INTO CANADA

A lready gaining ground in the U.S. as a diagnostic tool to

measure the shape and condition of underground pipes, laser profil-ers are beginning to find favour with Canadian contractors.

Laser profilers cast a circular beam of laser light around the perimeter of a pipe, then measure deviations from a perfect circle to determine the location of cracks, or pipe deformations. Software tracks the laser ring to determine where deviations occur and marks their position along the pipe. The software can later generate a three-dimensional model of the pipe for further examination. Laser profilers can be used alone or as accessories to closed circuit television (CCTV) cameras. When used along with traditional CCTV cameras, the camera inspection is performed on the way into the pipe. On the way out, the camera’s lights are shut off to record the laser profile.

While the devices are being used in some Ontario applications, the Florida Department of Transportation has specified, since 2006, that all pipe projects with diameters from 200 mm to 1,200 mm (8in to 48 in) must be verified for ovality by a laser profiler before the contract can be handed over. The Arizona Department of Transportation requires 10% of jobs to be similarly scanned.

PipeFlo Contracting Corp. of Hamilton owns one of the province’s first large pipe laser profiling units, capable of scanning pipes from about 300 mm to 3,000 mm diameter. The unit was purchased from CleanFlow Systems of New Zealand. “We have had the unit for maybe four or five months, but we have already used it for contracts in Hamilton and Ottawa,” said Bruce Noble, President of PipeFlo. “We are probably the only contractor in the province that can profile big pipes.”

Noble said that the technology is becoming more relevant as more and more flexible pipe is used in infrastructure projects. “Polyethylene and PVC pipe can distort after backfill and we can go over that pipe before it is put into service,” he said. “That is what is driving the demand for us. People are saying, ‘prove to me that the pipe has not squashed on us.’”

Noble said that distortion in traditional CCTV camera images makes it difficult to determine whether or not the pipe being inspected is actually circular. “If I showed you a video looking down the tube taken with a CCTV camera, it is going to look oval regardless of where you scan it. How do you separate that from an actual problem with the pipe? We provided laser profiling for a job in Ottawa where a contract allowed 3% ovality. The contractor felt the job was completed to spec, but there was no way of determining the ovality to that tolerance, so the city and the contractor together decided to have us provide a laser profile.”

The technology is not widely used in Ontario because customers have not yet been sold on its advantages, said Frank Zechner, Executive Director of the Ontario Sewer and Watermain Construction Association.

“Most municipalities still ask for CCTV camera inspections,” he said. “The laser profiler is interesting technology, but because it is an added expense, it will sell itself on a wider basis only if it

proves it can provide a great deal more information that we are not getting through traditional cameras.”

Noble likens the use of laser profilers to the early days of trenchless technology. “Many clients just did not have a clue about it until they saw what it offered. We’ll see a lot more of laser profiling in the future,” he said. Website: www.pipeflo.ca Article by Peter Kenter. Used by permission of author. Originally appeared in Daily Commercial News, Toronto, Canada.












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Typical output data from a laser profile survey of a pipe. Picture courtesy of CleanFlow Systems, NZ

A laser profiling survey unit. Picture courtesy of CleanFlow Systems, NZ

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http://www.pipeflo.ca







JETTING AND LUBRICATION PUMP FOR AKKERMAN GBM

A kkerman Inc. recently launched an new combination Jetting and Lubrication Pump for its Guided Boring

Machine (GBM) system. The new Jetting and Lubrication Pump arrangement allows customers to maintain optimum production rates in variable soil conditions in one compact, easily-transported unit.

The Jetting and Lubrication pump features independent hydrostatic flow controls for premium user control in a variety of soil conditions during each step in the 3-step GBM process. Customers has a choice of a 3,000 rpm, 30 HP diesel engine or the equivalent AC electric power source. The large 1,230 l (325 gal) tanks provide appropriate production capacity to meet Powered Cutter Head (PCH) and Cutter Head with Integral Swivel requirements. The tanks can be easily serviced at the open/close valve on the tank outlet. Highly transportable, contractors will find the Jetting and Lubrication Pump platform easy to move on site and travels well on a flat bed trailer.

The 172 bar (2,500 psi) high pressure Jetting Pump aides the GBM cutting process by lubricating cutter bits and spoils during excavation. An in-line suction filter protects the pump from contaminants in the water. The 17.2 bar (250 psi) Lubrication Pump assists with lubricating the pilot tubes, casing and augers and product pipe by reducing friction and easing the jacking process. An in-tank agitator mixes the lubrication quickly and keeps it consistent throughout the production process.

The Jetting and Lubrication Pump is essential for use with the Akkerman PCH and the Cutter Head with Integral Swivel upsizing tool. Website: www.akkerman.com

MCELROY UNVEILS NEW LOW PROFILE ROLLERS

M cElroy Manufacturing’s latest productivity-enhancing tool, the Low

Profile Rollers, is a modular pipe roller that accommodates 4- to 20-inch diameter pipe. Designed to keep high-density polyethylene pipe off the ground and clean, the rollers can be paired with several pieces of McElroy equipment to reduce manpower and heavy machinery required to manoeuvre pipe on a jobsite. A typical jobsite scenario could incorporate the Low Profile Rollers, a fusion machine and McElroy’s PolyHorse pipe-handling system to boost productivity up to 150%.

The Low Profile Rollers are rugged and reliable, featuring a sealed ball-bearing construction for continued performance use after use. Ordered by the crate, jobsite operators can easily assemble the 40 crated rollers in a matter of minutes, not hours. The Low Profile Rollers have already been utilised on various jobsites, where they were found to be tip-resistant and able to handle curved pulls over considerable distances. The external beads created from the fusion process also slide right through the rollers during the pulling process, which is a typical downfall of ineffective rollers. Website: www.mcelroy.com

SUPPORT EQUIPMENT, ACCESSORIES & SERVICES

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The Jetting and Lubrication Pump for Akkerman GBMs.

McElroy’s new Low Profile Roller.




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http://www.mcelroy.com

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UKSTT NEWSLETTER


Brought to UKSTT Members by:

REGISTRATIONS OPEN The Middle East region’s largest and most prestigious meeting for Trenchless Technology (NDRC) professionals is taking place between 16-18 February 2009.

TRENCHLESS MIDDLE EAST 2009 will feature some 60 companies from around the world, displaying the very latest products and equipment including: Horizontal Directional Drilling (HDD), detection and CCTV equipment, pipelines and lining technology and microtunnelling, these being just some of the items on show.

Entrance to the exhibition is free, and, if you register in advance, you will receive a free gift on arrival at the show! Registration is now open. Register before 31 December 2008 and receive US$150 discount on the full fee.

Sign up for the highly educational conference programme, featuring the International Society for Trenchless Technology (ISTT) Masterclass. This is an important forum where you can get up to date information on the latest techniques, advice on assessment and selection methods for installation and renovation techniques and learn about the importance of geotechnical site investigation. Website: www.trenchlessmiddleeast.com

Registration is also now open for the International No-Dig 2009 event in Toronto, Canada. Registration before 27 February 2009 will offer delegates reduced rates.

The International No-Dig Show runs for 29 March to 3 April, 2009 and is co-sponsored by the International Society for Trenchless Technology (ISTT) and the North American Society for Trenchless Technology (NASTT).

The International No-Dig Show program is driven and developed by the Program Committee, which is reviewing nearly 200 high-quality abstracts which were submitted for consideration, surpassing the number of abstracts submitted in past years. This outpouring of interest indicates strong growth in the trenchless technology industry – not only in North America – but also from around the world. International papers from Denmark, France, Germany, Italy, Japan, Poland, Taiwan, the Netherlands and the United Kingdom will be presented, showcasing innovative new ideas in the global trenchless marketplace. All papers will be presented in English.

No-Dig attendees may choose to attend from among 140 of the most interesting and compelling papers published and presented, all of which will be carefully peer-reviewed for relevance, usefulness and non-commercialism, and which make a long-lasting contribution to the trenchless technology industry. Paper presentations are arranged in a 5-track schedule by subject matter. Full conference registrants will have a CD-ROM of the conference proceedings of published papers.

Conference organisers predict that overall participation in the International No-Dig Show will reach record numbers especially with the international delegates in attendance. The ISTT has invited its 23 Affiliated Societies to get involved by attending, presenting a paper, exhibiting or sponsoring the show. Nearly 2,000 people from around the world are expected to attend. Website: www.nodigshow.com

EVENTS AND MEETINGS

To First Page








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http://www.nodigshow.com




2009 January 20-22 UCT 2009 - San Antonio, USA Details from: www.uctonline

February 9-12 Microtunneling Short Course - Golden, USA Details from: www.microtunneling.com

February 16-17 Trenchless Middle East - Dubai, UAE Details from: www.westrade.co.uk

February 17-19 CGA Excavation Safety 2009 - Orlando, USA Details from: www.excavationsafetyonline.com

February 19 Construction Project Management 2009 - Manchester, UK Details from: www.publicserviceevents.co.uk

March 3-5 CGA Excavation Safety Conference and Exhibition - Orlando, USA Details from: www.CGAConference.com

March 29 - April 3 International No-Dig 2009 - Toronto, Canada Details from: www.nodigshow.com

30 March – 3 April Wasser Berlin 2009 - Berlin , Germany Details from: www.wasser-berlin.de

April 20-25 Intermat 2009 - Paris, France Details from: www.intermat.fr

April 24 UKSTT Awards Dinner - Birmingham, UK Details from: www.ukstt.org.uk

May 19-21 IWEX/Sustainability Live - Birmingham, UK Details from: www.iwex.co.uk

May 26-29 4th International CityPipe Exhibition - Moscow, Russia Details from: www.citypipe.ru

June 14-17 RETC - Las Vegas, USA Details from: www.retc.org

September 16-17 DT Exhibition 2009 - Cheltenham, UK Details from: www.dtexhibition.com

September 20-22 Trenchless Australasia 2009 - Melbourne, Australia Details from: www.trenchless2009.com

September 23-25 Tunneling Short Course - Golden, USA Details from: www.tunneling.com

EVENTS AND MEETINGS


October 6-8 ICUEE 2009 - Louisville, USA. Details from: www.icuee.com 2010 May 2-7 NASTT No-Dig Show - Chicago, USA Details from: www.nodigshow.com If you have an event, course or meeting scheduled for 2009 or 2010 and would like to add it to this listing please forward details to: [email protected]

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http://www.CGAConference.com


http://www.wasser-berlin.de

http://www.intermat.fr

http://www.ukstt.org.uk

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http://www.citypipe.ru

http://www.retc.org

http://www.dtexhibition.com

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