News and Articles
Feb 28, 2008
News
UNITRACC at IFAT 2008
Web-based information-, teaching and working platform for the field of sewer and pipeline construction to exhibit at IFAT 2008
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Feb 26, 2008
Article
Appropriate application of controlled turbine bypass valves
During recent years, operation requirements for controlled turbine bypass valves and bottom discharge valves have increased continuously. 10 or 15 years ago these valves might have operated „not neatly” under certain opening degrees, i.e., there were cavitation phenomena, vibrations or pulsating discharge of the water. Nowadays, this is not the state of the art any more. These valves must perform neat flow discharge across the whole range of opening, from „Open“ to „Closed“ position and vice versa, without any vibrations nor cavitation.
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Feb 25, 2008
News
Tom Hayes and Isabel Tardif elected to serve on the NASTT Board of Directors
Following an election that was held by letter ballot in November 2007, Tom Hayes and Isabel Tardif were elected to serve on the North American Society for Trenchless Technology (NASTT) Board of Directors. The NASTT Board of Directors is the governing body of the Society. It sets the policy, establishes the budget and verifies that the Society is fulfilling its mission.
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Feb 20, 2008
News
Ditch Witch 250R/T locating system released
The Ditch Witch® organization, the industry leader in the design and manufacture of underground construction equipment, announces the release of its new 250R/T locating system. The company says the 250R/T is one of the most efficient and cost-effective methods for locating and avoiding buried telephone, CATV, power, gas, and water lines. Consisting of a 250T transmitter and 250R receiver, this simple, lightweight system features intuitive controls, an easy-to-read display, and depth estimation up to 15 feet (4.6 m).
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Feb 18, 2008
News
Robbins TBM digs deep for down under sewer project
A new Robbins Double Shield TBM will tunnel underneath the northern suburbs of Melbourne, Australia, calling for innovative changes to the tunneling operations and extensive site monitoring.
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Feb 11, 2008
Article
Detecting crack-like defects in gas pipelines
EMAT crack detection and coating disbondment (RoCD2)
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Feb 07, 2008
News
Trenchless pipe rehabilitation of large sewers by Trolining's GIPP method
More and more sewer network owners and operators choose the GIPP method for the rehabilitation of their conduits
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Feb 05, 2008
News
Largest Plastic Pipe Conference ever
Organisers of the XIV Pipes Conference expect this year’s event to be the largest ever. The conference brings together the global plastic pipe community and will be held from 22 – 24 September 2008 at the Marriott Hotel in Budapest.
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Feb 01, 2008
News
VINCI has signed the contract of the extension of the Czajka water treatment plant in Poland
The consortium led by Warbud (VINCI Construction Filiales Internationales) has signed the contract of modernisation and extension contract for the Czajka water treatment plant to the north of Warsaw by the Warsaw water and wastewater authorities.
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Jan 29, 2008
News
Underground Moling Service - First in Scotland
On Wednesday 11th January 2008, Underground Moiling Services Ltd, part of the Turriff Group of Companies, became the first company in Scotland to take delivery of a TT-UK/RSP Suction Excavator high speed single fanned machine. This is the first of two ordered by Underground Moling Services Ltd the second being a twinned fan version which is due to arrive at the start of May.
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Jan 28, 2008
Article
Utilities management - from a contractor's perspective
Even though local authorities are often blissfully unaware of it, their sewerage systems are often characterised by a collection of technical horrors such as:leaking sewerscollapsed sewersfatigued and rapidly deteriorating pipesinsufficient capacity of existing sewers.
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Jan 28, 2008
News
NASTT Cured-in-Place-Pipe (CIPP) liners course set for Atlantic City
The Mid Atlantic Chapter of NASTT is pleased to offer a special one-day Cured-in-Place-Pipe (CIPP) Good Practices Course, Tues., Feb. 12, at the Trump Taj Mahal Casino and Resort in Atlantic City, New Jersey.
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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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