FWP 2017 l Christian BERHAULT, Centrale Nantes Ancrage - “Floatgen @ SEM-REV: a successful partnership between the world’s first multi-technology offshore test-site and France´s first offshore wind turbine”

1. FLOATGEN : Connec0on to SEM-REV
Dynamic power cable
Drag anchors
Subsea Hub
3x2 mooring lines
Top connectors

2. Mooring lines components
chains, schakles, triplates
(LeBeon M)
clump weights
cast iron (FMGC)
nylon rope (Bexco)
buoyancy
modules

3. Mooring lines installa0on
Bourbon (June/July 2017)
Anchor Handling
Vessel

4. Mooring lines installa0on
Specific arrangement / installa0on procedures
High tension : nylon stretching
Shallow water
Tidal and waves condi0ons
Limited size of SEM-REV
Abandonment above seabed
VIDEO

5. OMDYN
Dynamic cable for marine energy
Objectives :
§ Mechanical
characteristics of cable
components,
§ Numerical modeling of
the global configuration
and cross section
§ Experimental analysis of
thermo-mechanical
fatigue,
§ Monitoring throughout
the cable life cycle
§ Marine growth influence Source : Joshua Bauer, NREL
Source : ECN

6. MHM-EMR
Mooring health monitoring
Objectives :
In service monitoring of mooring
systems :
§ In situ measurements and survey
combined with numerical
modelling to an0cipate real fa0gue
life and maintenance
§ Informa0on and alarm to help
an0cipa0on within safety
preven0on plans
Source : ECN
Source : DLM h9p://www.dlm-
uk.com