Location
Arlington, Virginia
Date
14 Aug 2008, 7:00 pm - 8:30 pm
Abstract
With an output capacity of 90 MW of renewable electricity, Barrow OSWF is an offshore wind farm constructed in UK coastal waters. The site is located approximately 7 km south of Walney Island near Barrow-in-Furness, Cumbria, in the East Irish Sea. Steel monopiles with an outer diameter of 4750 mm and a wall thickness of between 45 mm and 80 mm provide the wind turbines foundations and vary in length between 49.5 m and 61.2 m weighing up to 452 tonnes. Installation of the monopile foundations with a penetration into the seabed of between 30.2 m and 40.7 m was carried out by a process of driving and drilling. The geology of the area beneath the wind farm site comprises sequences of medium dense to very dense sands, firm to stiff and very stiff to hard clays and weathered mudstone/siltstones. Specialist pile driving company IHC Hydrohammer BV of Holland used its 1200 tonnes hydrohammer to drive the monopiles into the subsea soil formations, whilst specialty foundation equipment manufacturer Bauer Maschinen GmbH of Germany, employed its Flydrill BFD 5500 for drilling out the core inside the monopiles to reduce frictional resistance. Main contractor for the project was Marine Projects International Ltd of Middlesbrough, UK. All construction operations were carried out from MPI's jack-up vessel MV Resolution.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
6th Conference of the International Conference on Case Histories in Geotechnical Engineering
Publisher
Missouri University of Science and Technology
Document Version
Final Version
Rights
© 2008 Missouri University of Science and Technology, All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.
Document Type
Article - Conference proceedings
File Type
text
Language
English
Recommended Citation
Brunner, Wolfgang G. and Beyer, Manfred, "New Bauer Flydrill System Drilling Monopiles at Barrow Offshore Wind Farm, UK" (2008). International Conference on Case Histories in Geotechnical Engineering. 7.
https://scholarsmine.mst.edu/icchge/6icchge/session09/7
New Bauer Flydrill System Drilling Monopiles at Barrow Offshore Wind Farm, UK
Arlington, Virginia
With an output capacity of 90 MW of renewable electricity, Barrow OSWF is an offshore wind farm constructed in UK coastal waters. The site is located approximately 7 km south of Walney Island near Barrow-in-Furness, Cumbria, in the East Irish Sea. Steel monopiles with an outer diameter of 4750 mm and a wall thickness of between 45 mm and 80 mm provide the wind turbines foundations and vary in length between 49.5 m and 61.2 m weighing up to 452 tonnes. Installation of the monopile foundations with a penetration into the seabed of between 30.2 m and 40.7 m was carried out by a process of driving and drilling. The geology of the area beneath the wind farm site comprises sequences of medium dense to very dense sands, firm to stiff and very stiff to hard clays and weathered mudstone/siltstones. Specialist pile driving company IHC Hydrohammer BV of Holland used its 1200 tonnes hydrohammer to drive the monopiles into the subsea soil formations, whilst specialty foundation equipment manufacturer Bauer Maschinen GmbH of Germany, employed its Flydrill BFD 5500 for drilling out the core inside the monopiles to reduce frictional resistance. Main contractor for the project was Marine Projects International Ltd of Middlesbrough, UK. All construction operations were carried out from MPI's jack-up vessel MV Resolution.
