Major
wind
farm
operators
DONG
Energy,
Vattenfall
and
E.ON
are
all
checking
turbines
after
a
weakness
was
discovered
in
transition
pieces
at
Dutch
wind
farm
Egmond
aan
Zee
late
last
year,
which
set
alarm
bells
ringing.
The
structure
is
not
solid
enough
to
withstand
the
stresses
and
strains
imposed
by
turbines
operating
in
harsh
offshore
conditions.
It
was
discovered
that
transition
pieces
had
moved
a
few
centimetres.
Foundations
at
Egmond
aan
Zee,
which
is
owned
by
Shell
and
Vattenfall,
have
been
repaired
by
pouring
concrete
into
the…
