Hobas GRP Cooling Water Pipeline for voestalpine Steel Plant
Feb 15, 2017
For the voestalpine AG in Donawitz, a more than 100 m long HOBAS GRP Pressure Pipeline De 1720 has been installed by means of curved jacking. Despite challenging circumstances, the installation has been successfully completed within 2 months only.
An internationally renowned steel company, voestalpine places highest demands not only on the company’s products, but also on the plant infrastructure. When it turned out that a cooling water pipeline had to be replaced, the company looked for a solution that would match the claimed quality criteria and challenging conditions on site.
The installation had to be implemented in limited space, with a trenchless method, and in a curve. The new pipeline was to pass beneath a road and some rails, past old foundations and pipelines underground, and further obstacles along the pipeline route had to be expected.
Since the soil did not contain any groundwater, it was decided to realize the curved trenchless installation with open shield tunneling technology. This would allow for a flexible approach to all sorts of challenges along the planned pipeline route. In terms of an adequate top-quality pipe material, voestalpine found what they required at HOBAS.
Thanks to their small outside diameter in relation to their inside diameter, HOBAS Jacking Pipes are in fact ideally suited for restricted space conditions, featuring a low weight at maximum compressive strength. A smaller outer diameter requires a smaller borehole, which in turn means less soil to excavate and dispose of.
Another significant advantage concerns the fact that the pipes’ smooth outside surface ensures low friction and resistance during jacking and whenever jacking is (re-)initiated, for instance after standstill periods. In view of the partly unforeseeable soil conditions and necessary adaptations in the course of tunneling works, this was an essential benefit.
Thanks to the elasticity of the GRP material, allowing for an optimal transmission of jacking forces without timber packing rings and a high steering precision, HOBAS Jacking Pipes are also ideal for curved trenchless installations.
In early 2016, more than 100 m centrifugally cast HOBAS GRP Pressure Jacking Pipes in 2 m length, with a stiffness of 100000 N/m² and a pressure class of PN 6, were delivered to the voestalpine AG in Donawitz. The construction companies Max Bögl and Hinteregger & Söhne successfully completed the open shield jacking installation, including a curve with a radius of 300 m, within two months’ time. With an expected lifetime of up to 100 years, the HOBAS Cooling Water Pipes now ensure a reliable and successful service of the steel plant.
Project data at a glance
Year of construction: 2016
Construction time: 2 months
Total length of pipeline: ~105 m
Diameter: De 1720
Pressure class: PN 6
Stiffness class: SN 100000
Application: Cooling water pipeline for steel plant
Client: voestalpine AG
Installation method: Open shield tunneling
Contractors: Max Bögl (Germany), G. Hinteregger & Söhne Baugesellschaft m.b.H (Austria)
Advantages:
- Low friction during tunneling thanks to smooth outside pipe surface
- Small outside in relation to inside diameter resulting in installation flexibility
- Low weigth and less excavation material
- Optimal transmission of jacking forces and high steering precision in curved trenchless installations
- High compressive strength
- Very long service life
More News and Articles
Apr 19, 2024
News
WATCH: Overnight with SAERTEX-LINER H20 in São Paulo
Available through Pipe Core, high-quality liner SAERTEX-LINER H20 performed under pressure in São Paulo, Brazil.
Apr 17, 2024
News
Immersive media provides wastewater experience in Denmark
An immersive media experience (IMX) may not be what most people want when they think about industrial wastewater, but that is exactly what visitors can expect when they visit a new installation in the city of Kalundborg, Denmark.
Apr 15, 2024
News
Spotlight on gender diversity at Pipe Core
Since founding in 2008, Pipe Core’s team has grown across all areas of the business and is now in a position where there are more females than males across the organisation. Research published in Harvard Business Review found that “countries …
Apr 12, 2024
News
New Wave of Startups Scale Innovation to Solve Global Water Challenges
Innovators from Around the World Join Xylem’s 2024 Accelerator Program to Deploy Breakthrough Innovations for Utilities and Industrial Users of Water
Apr 08, 2024
News
Integrated sustainable electricity and clean drinking water systems
Altitude Water and New Use Energy Solutions have partnered to create integrated, mobile solar-plus-water generation systems that produce sustainable electricity and clean drinking water anytime, anywhere.
Apr 05, 2024
News
How to Evaluate Hydraulic Fracture Risk in HDD Design
The design of horizontal directional drill (HDD) installations often requires an evaluation of the potential for hydraulic fracture of the soil layers through which an HDD passes. Evaluating this risk during the design process is an important planning tool to …
Apr 02, 2024
News
Historic Project Linking Rome and Vatican City Uses Advanced Technology and Local Knowledge to Keep Water Flowing
Relocation of Major Sewer Infrastructure Enables Construction of Pedestrian Link for 35 Million Visitors to the 2025 Jubilee
Mar 27, 2024
News
USU Study Looks at Water Main Break Rates in the U.S. and Canada
Report Highlights Correlation Between Material and Diameter
Mar 26, 2024
News
Update BE-21: New Material in Course and Modules on Trenchless Pipe Installation
Online training on the topic of pipeline installation in civil engineering: Trenchless technology for underground drainage construction can be a resource-efficient, environmentally friendly, time-saving, and cost-effective alternative to open cut methods. The UNITRACC e-learning course "Utility Tunnelling" has been enhanced …
Mar 25, 2024
Article
Bacteria as a new weapon in wastewater treatment
In early November, San Diego based startup Aquacycl officially opened its first European office and test center at the Water Campus in Leeuwarden. The Netherlands Foreign Investment Agency (NFIA) and the Investment and Development Agency for the Northern Netherlands (NOM) …
Mar 22, 2024
News
A superior HDD offering
Building on its relationships with leading horizontal directional drilling companies, TRACTO Australia has delivered three new rigs to operator Superior HDD.
Mar 20, 2024
News
New portable water filtration technology could improve access to clean drinking water worldwide
The University of Texas at Austin has developed an injectable water filtration system with the aim to aid the over two billion people worldwide who are without clean drinking water.
Contact
HOBAS Pipes International GmbH
Pischeldorfer Str. 128
9020 Klagenfurt
Austria
Phone:
+43 463 48 24 24
Fax:
+43 463 48 21 21