Saab Seaeye’s Sabertooth Used for Tunnel Inspection

Inside Australia’s Snowy Mountain hydro scheme, leading underwater service provider, Hibbard Inshore, say they have broken the record for the longest tunnel inspection by a tethered vehicle using their newest long-range vehicle, the Saab Seaeye Sabertooth.

Importantly, this meant there was no need to drain the tunnel system, which saved closing down several power stations.

During a round-trip of over 24 kilometres, Hibbard Inshore’s customised Sabertooth AUV/ROV collected real-time visual data whilst scanning the tunnel with multiple types of multibeam sonar.

The mission set out to gather high-density dimensional data, discover open cracks or holes, find debris build-up, detect lining failures, and identify any rock falls.

From the data collected Hibbard created 3D models ready for maintenance planning and comparable inspection data to identify future trends in tunnel condition.

Hibbard Inshore has so far inspected six trans-mountain tunnels across the Snowy Hydro Scheme using this method and will return in 2014 for further inspections.

Previously the tunnels had to be drained for examination, risking collapse of the tunnel and endangering inspection personnel.

Chief Operating Officer of Snowy Hydro, Ken Lister said:

“The use of the unmanned sub for tunnel inspections now means that it can be done more frequently, more safely and without the need to shut down power stations or drain the tunnel. This multi-million dollar investment is a great outcome for the business, for the safety of our people and contractors and is part of our wider program of Scheme upgrades and on-going maintenance.”

The challenges for Hibbard Inshore included entering narrow shafts, navigating tight bends, working in limited visibility and managing within a strict schedule.

The Sabertooth can operate as either a remotely operated vehicle (ROV) with a tether to allow for real-time data and pilot control, or as an autonomous underwater vehicle (AUV) to give flexibility in various tunnel inspection scenarios.

Press Release, February 05, 2014

Share this article

Follow Subsea World News

Events>

<< Jun 2019 >>
MTWTFSS
27 28 29 30 31 1 2
3 4 5 6 7 8 9
10 11 12 13 14 15 16
17 18 19 20 21 22 23
24 25 26 27 28 29 30

EXPLORATION AND PRODUCTION OFFSHORE CONGRESS HUB 2019

During the last few years Oil&Gas sector had a difficult time surviving in brutal low-price environment…

read more >

Brasil Offshore 2019

The commemorative 20th anniversary edition of Brasil Offshore will be held under the auspices…

read more >

Subsea EMEA 2019

Subsea EMEA, the elite submarine cable-focused event hosted by Capacity Media, will return for its third year situated…

read more >

9th International Conference Offshore Foundations

Offshore Foundations is a technical event for experts in the wind industry. The goal is to push forward technical development for future foundation concepts.

read more >