News and Articles
Jan 24, 2008
Article
Performance characteristics of deterministic leak detection systems
The aim of leak detection and leak location (LDL) is the limitation of losses and possible environmental damage, especially for leaks with hazardous products. The recognition of a leak, the knowledge of its leak rate and its location should lead to preassigned action taken by the operating personnel. A basic requirement for that is a reliable leak detection system that provides well-defined performance characteristics. They mainly depend on the metering precision of the instrumentation and the performance of the process data acquisition. On this basis it provides a well-defined response within an appropriate period of time and unique behaviour on operational intervention. A properly calibrated LDL system is a valuable assistance to the operating personnel. It is sensitive and at the same time it shows a low false alarm rate.
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Jan 22, 2008
News
Robbins TBM goes on the fast track for Papua New Guinea tunnel
A 5.6 m (18.4 ft) diameter High Performance (HP) Main Beam TBM will be delivered on a "fast track" program just six months after contract signing. The Robbins TBM will be used for a series of dewatering tunnels at the Ok Tedi Mine in Papua New Guinea, with excavation beginning in the first quarter of 2008.
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Jan 18, 2008
Article
Non-clogging pumps for sludge handling
With the handling of sludge often the most problematic area in the wastewater treatment process, two wastewater treatment facilities in Scotland and Germany turned to ITT Flygt unit for the installation of non-clogging N-Pumps for greater efficiencies and savings in maintenance.
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Jan 16, 2008
News
Microtunnelling guru down under
When shove comes to push. James Thomson has the answers.
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Jan 11, 2008
News
Ditch Witch Aggressive Talon Rock Bit redesigned for greater durability
The Ditch Witch organization has re-released its popular Aggressive Talon Rock Bit with a design modification that will significantly improve performance.
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Jan 08, 2008
News
Insituform wins record $35.1 million in CIPP work in Delhi, India
Insituform Technologies, Inc. has won two sewer rehabilitation contracts in Delhi, India, totaling $35.1 million, creating the largest municipal sewer project in the company's history.
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Jan 08, 2008
Article
Critical strain for predicting squeezing potential in tunnels
Squeezing is one of the major construction problems encountered while tunnelling through weak rock masses under high overburden. An initial assessment of the squeezing potential will help in proper design and formulation of strategies. Currently no methods are available which could be used with confidence in the field to assess the squeezing potential. The methods in vogue generally compare the rock mass strength with the in-situ stress to resolve this problem.
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Jan 04, 2008
News
Powered up with HOBAS
A constantly growing demand for electricity combined with ecological awareness opens big business opportunities especially in the sector of renewable energy production. Austria, with its mountainous areas and numerous streams lends itself to the establishment of hydro power stations.
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Jan 02, 2008
News
Eureka! Thames Water invention to help cut leakage by a quarter and reduce customers' bills
Boffins at Thames Water have come up with up a new invention to reduce the millions of litres of water lost through leaking pipes by up to a quarter.
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Dec 27, 2007
News
Gotthard Base Tunnel: Work on installing the railway infrastructure can begin
AlpTransit Gotthard Ltd (ATG) as owner, and the Swiss Railway Infrastructure Consortium Gotthard (SBK), have reached agreement on withdrawal of the appeal against the award of the contract for installation of the railway infrastructure in the Gotthard Base Tunnel. This finally opens the way for work to start on the project-of-the-century railway infrastructure of the Gotthard Base Tunnel.
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Dec 20, 2007
News
Water Environment Federation launches new, improved web site for the Water Is Life, and Infrastructure Makes It Happen public education program
The Water Environment Federation (WEF) announces the launch of a new and improved Web site for Water Is Life, and Infrastructure Makes It Happen (www.WaterIsLife.net), a national public education program that builds awareness about the value of water and wastewater infrastructure and the importance of investing in its long-term stability.
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Dec 19, 2007
Article
Structural monitoring of a GRP jacking project with CoJack
At present the first jacking project with a special version of the calculation program CoJack for GPR-pipes is being carried out in Essen, Germany.
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Dec 19, 2007
News
UNITRACC cooperates with Bochum University of Applied Sciences - Test phase becomes confirmed cooperation
Since the start of the winter semester 2007/2008 lecturers and students of the "Urban Water Management" course held at the Bochum University of Applied Sciences (Germany) have been using UNITRACC, the web-based information, learning and working platform, to support their lectures. For the 15 students, who have enrolled for the master degree "Civil Engineering", Prof. Dr.-Ing. Bernd Nolting, director of the environmental engineering lab, uses the platform for his one-semester lecture and laboratory course "Rehabilitation of urban water piping networks".
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Dec 18, 2007
News
Robbins TBM advances Lebanon′s water system
Oceanside excavation using a Robbins TBM along Lebanon's coast will ultimately bring fresh water to a parched and heavily populated region in the Kesrouane district 20 km (12 mi) north of Beirut. The 4 km (2.5 mi) long El Madiq Tunnel, contracted to the Baresel AG/Al Tajj Est. JV, is part of the much larger Kesrouane Coastal Area Water Supply Project to improve water systems.
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Dec 13, 2007
News
IFAT 2008 grows and grows
At IFAT, the 15th International Trade Fair for Water – Sewage – Refuse – Recycling, which takes place from 5 to 9 May 2008 in Munich, the visitors can look forward to an impressive range of innovative solutions and new technology for implementing practical, cost-efficient solutions, plus a broad spectrum of services for the sector.
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Dec 11, 2007
News
Thames Water pledges half a million pounds to restore and improve River Wandle
Thames Water has announced, in conjunction with the Wandle Trust, a £500,000 plan to revive and revitalise the River Wandle in South West London over the next 5 years.
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Dec 07, 2007
Article
The trenchless challenge in urban Hong Kong
The underground environment in Hong Kong Installing and maintaining underground utilities can be a challenge anywhere, regardless of whether conventional open trench or trenchless methods are adopted. However, every location and environment imposes specific constraints and difficulties, and Hong Kong is a particularly difficult environment in which to work underground.
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Dec 03, 2007
News
BorSafe proves its value to durable pipe systems around the world
Pipe producers and fittings manufacturers from Europe to China are recognising the processing and long-term performance benefits of recent introductions to the BorSafe™ product range from Borealis, a leading provider of innovative, value creating plastics solutions. BorSafe polyethylene (PE) pressure pipe and fitting grades reflect Borealis’ commitment to contributing to better, safer and more durable pipe systems for drinking water, sanitation and gas distribution.
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Nov 29, 2007
Article
Development of a new high performance PE pressure pipe system, from design phase to reality
Since the introduction of the first systems more than 40 years ago, PE raw material producers and pipe producers have continuously joined their efforts to propose better and better pressure pipe solutions to the end-users and installers. The development of modern installation techniques, in particular trenchless technologies, has created a need for improved systems, with enhanced insensitivity to installation conditions.
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Nov 28, 2007
News
TT-UK celebrates 25th anniversary: established 1982-2007
In an ever changing technological and economic climate, Bedford based TT-UK and it's hardworking team continue to build on their successes, offering turn-key methods and equipment solutions to Trenchless Technology problems and continued improvements in the method of installing or replacing pipe and cables underground.
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Nov 26, 2007
News
EPS begins pipeline construction
The first shovel of earth has been turned for the construction of the Ethylene Pipeline South (EPS). The start of excavation in Gaimersheim near Ingolstadt, Germany, marked the beginning of work on the first of 360 kilometers of pipeline in the EPS. Plans call for the pipeline to reach from Münchsmünster in Bavaria across Baden-Württemberg to Ludwigshafen in Rhineland-Palatinate. Once put into service – planned for September 2008 – the pipeline will connect ethylene producers and processors in southeastern Bavaria with the ethylene center in Northwest Europe.
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Nov 23, 2007
News
NASTT seeks proposals for the development of cured-in-place-pipe (CIPP) publication
The North American Society for Trenchless Technology (NASTT) is accepting proposals to develop a publication on Cured-in-Place-Pipe (CIPP) that complements the Society's existing CIPP Good Practices course. The CIPP publication will be provided to participants of the training courses and will be offered for sale on the NASTT web site.
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Nov 22, 2007
Article
Application of HFI-pipes for a pipe-in-pipe system in the North Sea
The gas field Forvie North is located in the North Sea between the Shetland Islands and Norway. In this area the water depth is approx. 118 m. The gas reserve itself is located in a depth of approx. 4 km under the seabed. From here the gas is transported with approximately 95 °C. The North Sea is very cold in this area and in order to avoid the establishment of hydrates, the temperature of the transported material must be kept high. Therefore pipe systems with a high thermal insulation have to be used. The heat conduction coefficient may be max. 1 W/m2K. This value can only be achieved by special insulated pipes as a pipe-in-pipe system.
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Nov 19, 2007
News
New air valve for sewage applications
VAG-Armaturen GmbH (vag-armaturen.com/en/) has extended its product range by an automatic air valve for sewage applications. The VAG FLOWJET Air Valve can serve as both an aeration valve for the draining of sewage water lines and a deairing valve when sewage water lines are filled. It is also suitable for continuous ventilation under system pressure during operation.
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Nov 16, 2007
News
Borealis and Borouge launch Water for the World
First global programme in plastics industry addressing water crisisLeverages companies’ leadership to provide sustainable solutionsFosters local knowledge and partnerships throughout value chain to reach those in need
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