Rhian Wardley
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Transcript of Rhian Wardley
FROND MATS – A SOFT SOLUTION TO SCOUR
SSCS FROND MATS
MIMICKING NATURE
SSCS FROND MATS
A ROBUSTLY FIELD PROVEN PERMANENT SOLUTION TO
SCOUR
SSCS FROND MATS
REMOVING THE CAUSE
PERMANENTLY
SINTEF Report – Viscous
Drag Fronds – Flume Tank Trials (for ICI Linear Composites ~ SSCS) @ River & Harbour Laboratory, Norwegian Institute of Technology, Trondheim.
Phased Flume Trials
Initial sediment deposition at the foot of the fronds
Further sediment deposition over the Frond Mat
Reinforced Sediment sand bank near full development with a few short
length of Frond exposed
Diver inspecting the fully developed sediment sand bank with short
random Fronds exposed
CREATION OF
SANDBANK
UK
SOUTHERN NORTH SEA
SSCS FROND MATS
REMOVING THE CAUSE
PERMANENTLY
SSCS FROND MATS
IN-HOUSE DESIGN
SSCS FROND MATS
IN-HOUSE MANUFACTURE
FROND MAT TYPES
Frond Pin and Anchor System
Gravity Anchor System
SSCS ANCHORS
SUBSEA ANCHOR
SSCS EQUIPMENT
HIRE
UNDERWATER INSTALLATION EQUIPMENT
SSCS GRAVITY
ANCHORS EASE OF
INSTALLATION
SSCS ‘GRAVITY
ANCHORS’
IN-HOUSE DESIGN AND
MANUFACTURE
SSCS FROND MATS
FAST INSTALLATION
SSCS FROND MATS
ENVIRONMENTALLY FRIENDLY
SSCS FROND MATS
GLOBAL EXPERIENCE
Patricia-Baleen
Pipeline, Patricia
OMV AUSTRALIA
JAN-FEB 2003
ARKLOW BANK WINDFARM TURBINE PILE FOUNDATION
& CABLES
SCOUR RECTIFICATION
GE ENERGY
Pipeline Freespan Rectification and
Stablisation 2006 (ongoing)
Shell Brunei
Recent Scour Rectification
and Prevention
Projects
2004 Marathon Oil, Concrete Gravity Based MOPU, Gabon
2006 (ongoing) Shell Brunei, Pipeline Freespan Rectification and Stabilisation
2006 to 2008 Norfolk Broads Riverbed and Bank Erosion Rectification and Reinstatement
2005/6/10 ODE & E.ON Scroby Sands
2012 to 2015 SASMAP Project, EU
2014 GMS Endeavour Anglia A – North Sea
2005 Bass River, USA – National Grid Reinstatement and Protection of polluted riverbed
2006/7 (ongoing) SINOPEC China, Bohai Bay
2009 to 2011 BP Vietnam, Lan Tay Subsea Remedials
2011 (2004) Arklow Bank Offshore Wind Farm
2013 (ongoing) Pertamina, Indonesia Offshore Platform Leg Scour Protection and Remediation
Lower installation cost compared to that of other currently used systems
‘One-off’ cost only – providing a permanent engineering solution to scour that does not require follow up maintenance or re-application associated with other ‘hard’ methods of protection
Scour is stopped immediately upon installation
Progressive build-up of a permanent fibre-reinforced sandbank
Environmentally acceptable: the sandbank contours follow and blend into the riverbed or seabed, and do not negatively affect marine life, the growth of vegetation, or fishing
Effective in deep or shallow water
Impact damage protection by cushioning structures with energy absorbing sand
Load bearing solution – natural agitation of fronds creates a high degree of sand compaction
Field proven in various locations globally
Key Benefits
Pilarczyk (2000) Geosynthetics and
Geosystems in Hydraulic and Coastal
Engineering
QUESTIONS
MORE INFORMATION AVAILABLE AT www.sscsystems.com/scour