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Trenchless International

July 2010

From the Chairman’s Desk

It is more than 20 years since the Netherlands Society (NSTT) became the first national society for Trenchless Technology in 1988, followed in 1989 by Scandinavia, France, Germany and the United States. So it was a privilege to attend the NASTT 20th anniversary celebrations in Schaumburg, Illinois, in early May.

Executive Director’s Report

We have reached the halfway point of 2010. Trenchless Affiliated Societies have accomplished much in educating users on the benefits and opportunities of trenchless methods and applications. And Affiliated Societies still have many fine education and training programs that they will offer between now and the end of the year.

Under London

London was first settled by the Romans in 43 AD, and has been a major settlement for two thousand years. As a result, it was one of the first cities to develop an extensive system of underground infrastructure. Trenchless International takes a look into the history of this subterranean world, and trances the developments of the water and wastewater systems Londoners enjoy today.

The canon of drilling fluid

Frank Canon, guru of the industry and Baroid Industrial Drilling Products representative, recently found time to chat with Trenchless International about his experience in the industry and his vision for the future.

Conserving Caribbean coasts with HDD

The National Gas Company of Trinidad and Tobago is using horizontal directional drilling to protect the shoreline in the construction of a new offshore gas pipeline.

HDD drills Tunisian sands

Directional drilling is making inroads in Africa. In Tunisia, one of the country’s largest contractors has purchased a rig to lay pipe in the capital Tunis.

Durban water pipe replacement project nears completion

In October 2009, Trenchless International reported on the use of pipe cracking in the eThekwini Municipality Asbestos Cement (AC) Pipe Replacement Project in Durban, South Africa. Now, as this three-year project nears completion, we provide an update.

Gold medal for green pipeline

The construction of a gas pipeline to supply 2014 Winter Olympic Games venues is setting new standards for environmental management in Russia, with an innovative use of directional drilling and microtunnelling affording maximum protection for the Black Sea coastal ecosystem.

Drilling know-how comes down under

Leading international trenchless firms Vermeer, Baroid Industrial Drilling Products and Prime Horizontal joined forces in May to tour the Maxi HDD Rig Training Seminar along the east coast of Australia.

Advanced pipeline systems inspection and monitoring developments

One of the keynote speakers at the Trenchless Technologies in Asia Pacific Hong Kong 2009 conference was Professor Lucio Soibelman from the Civil and Environmental Engineering Department at Carnegie Mellon University. His talk introduced Carnegie’s Mellon Civil and Environmental Engineering Department Advanced Infrastructure Systems (AIS) Group vision and presented an overview of three AIS pipeline related research efforts.

Inspection and rehabilitation of a deep, high flowing large diameter sewer

by Kevin Bainbridge from City of Hamilton and David Crowder and Gerald Bauer from R.V. Anderson Associates Limited

Inspection and condition is a challenging component of any rehabilitation program. In Canada one project team developed innovative planning and specialised equipment to achieve a positive outcome for the city of Hamilton, Ontario.

Extending the life span of underground infrastructure

Throughout the high density urban areas of North America, Asia, Europe and the United Kingdom, water and wastewater systems are largely reliant on pipes that were installed fifty, sixty, or even one hundred years ago. Much of this infrastructure is now ageing rapidly, and councils and water authorities around the world are being faced with the problems of leaks, pipe deterioration, and infiltration from tree roots.

CIPP foils Danish rats

by Peter Hjortdal, Århus Vand A/S.

At the SSTT’s annual meeting in Bergen, Norway, Århus Vand A/S and the contractor Per Aarsleff A/S won the audience’s, as well as the professional jury’s, No-Dig award for the most innovative project – the longest CIPP project in Aarhus municipality to date.

Sekisui SPR and Brandenburger sales co-operation

German-based trenchless rehabilitation firms Sekisui SPR and Brandenburger have entered into a sales co-operation agreement that will mutually expand their product portfolio and further strengthen their international market position.

Getting into a cleaning whirlwind

The latest innovations in trenchless pipe cleaning technology offer more thorough and efficient cleaning of pipe surfaces. Here, we review a new cleaning system developed by Whirlwind, which introduced aggregate into air flow to provide a uniform cleaning pattern.

From eyesore to idyll

Pipejacking has helped transform an abandoned quarry into a picturesque lake in the Czech Republic.

No-Dig in Dalum

by Vilmer Jensen, COWI A/S

What is the solution when large pipes have to be installed in a city where open excavation is impossible, the groundwater table is high and groundwater lowering is not permitted? An ideal option is pipejacking with compressed air. That was the solution chosen in a major sewerage project in the Danish city of Dalum, where engineers had to work within a high density urban area and a partly protected nature reserve.

San Francisco shakedown

by Anne Rees

Microtunnelling has played a key role in the construction of the New Crystal Springs Bypass Tunnel in San Francisco, the tunnel will secure safe water supply for the earthquake-prone city.

Getting bored in Bulgaria

The successful completion of a microtunnelling project in Bulgaria has showcased the engineering expertise of this Eastern European nation. A tunnel boring machine was used to install a new sewer pipe in the city of Plovdiv to avoid interrupting road and rail traffic.

Beating the heat in Bahrain

Microtunnelling will help the residents of Bahrain keep their cool and reduce their carbon footprint, as the North Shore District Cooling project in the capital of Manama is using tunnel boring machines to construct a new water pipe network.

How to select access chamber coatings

by Ian Bateman, Interflow

Manhole maintenance is essential to the upkeep of the entire wastewater system. Ian Bateman from Australasian relining company Interflow looks at the role of calcium aluminate cements in the strategy for renewing access chamber and underground structures.

New manhole HDD drill with rod lift

Swiss producer of trenchless pipe and cable laying equipment TERRA AG has developed a manhole HDD drill with the capacity to undertake directional bores from manhole to manhole, as well as from manholes to nearby homes.

Promoting trenchless safety

by Mark Bruce

Cross Bore Safety Association promotes safe practices to protect from damage, injury and death caused by utility intersections.

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