Boring - Trenchless International

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G E R M A N y
8NEWS
April 2010 - Trenchless International
8
British floods strengthen the
case for asset management
The United Kingdom Environment Agency has released a report identifying
the need to upgrade asset management processes around the country
following damages caused by excessive flooding in 2007. Of the £4 billion
worth of damages, £186 million is attributed to vital water infrastructure. In
response to the report, British water authorities have recognised that much
of their vital infrastructure, including distribution assets and treatment plants
situated near rivers, require increased protection.
NASTT rewards young trenchless professionals
The North American Society for Trenchless Technology (NASTT) has
announced a new scholarship program and a new award to honour
the memory of two influential people in the trenchless industry and to
encourage young professionals in the trenchless industry.
The Michael E Ardent Memorial scholarship program includes five individual
scholarships of $US5,000 each to be awarded to eligible students
who are members of a current chapter of NASTT. The Trent Ralston Award
for Young Trenchless Achievement has been created by the NASTT to
acknowledge a young individual who has demonstrated excellence in the
early stages of their career and has made a valuable contribution to the
Trenchless Technology industry.
EPA invests to renew or retire
aging water infrastructure
The EPA will invest $US10 million in the Aging Water Infrastructure
Research Program to evaluate new technologies that will assist utilities in
coping with aging and failing water and wastewater systems in the United
States. The research will be undertaken by the US Water Environment
Research Foundation and will examine innovative tools and procedures to
improve the maintenance, rehabilitation, and replacement of aging sewer
lines, water mains, and other components that constitute water and wastewater
infrastructure in a cost-effective manner.
Hawaii commended for green wastewater projects
The Hawaii State Department of Health (DoH) has been recognised for
its innovation and program management in underground infrastructure
and its ability to exceed the American Recovery and Reinvestment Act’s
Green Project Reserve requirements. One such green project is Honolulu’s
Waimalu Sewer project, which is currently undertaking microtunelling
operations.
The late Trent Ralston.
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SUCCESSFUL OPERATION OF DIRECT PIPE ® FOR
THE JEMGUM GAS STORAGE PROJECT.
E M D E N | G E R M A N y
PROJEcT DATA
M-1295M, AVN1000XB
Diameter: 1,295mm
Max. torque: 150kNm
H-107
Pipe Thruster HK750PT
Pipeline diameter: 48"
Max. pulling force: 750t (7,500kN)
Pipeline length: 283m
Geology: sand, silt, clay, gravel,
wood, stones
Herrenknecht AG
D-77963 Schwanau
Phone + 49 7824 302-0
Fax + 49 7824 3403
marketing@herrenknecht.com
www.herrenknecht.com
cONTRAcTOR
Meyer & John
GmbH & Co. KG
Tief- und Rohrleitungsbau
Subterranean storage caverns for natural gas are being built on the Ems River, near the city
of Leer, in Northern Germany. This requires flushing out salt mines to produce large underground
cavities. In order to discharge the concentrated saltwater (brine), a 42-kilometer long
pipeline must be laid to the Outer Ems near the city of Emden – the last 283 meters of the
outflow pipe at the “Rysumer Nacken” artificial dune field will be built using the new one-pass
Direct Pipe® method developed by Herrenknecht.
This innovative installation technology means that any disturbance of the delicate
natural environment around the East Frisian mud flat can be kept as minimal as possible.
Compared with conventional methods, Direct Pipe® does not require the costly and timeconsuming
installation of steel sheet piles alongside the offshore route.
With the help of a Pipe Thruster, the prefabricated pipe string will be pushed directly
towards the inlet structure located in the Outer Ems. The excavation work can be carried out
simultaneously by a tunnelling machine which is coupled to the pipeline and, after reaching
the target, can be disconnected and removed.
Direct Pipe® met the high expectations of all parties involved as far as both efficiency
and environmental protection are concerned and also made a valuable contribution towards
securing future supplies of natural gas.