It
has
also
faced
two
serious
engineering
issues:
"settlements"
in
the
turbine
towers'
transition
pieces
(TPs)
-
the
part
of
the
monopile
that
keeps
the
tower
standing
even
if
the
foundations
are
on
uneven
ground
-
and
misfiring
turbine
gearboxes.
In
April,
Vattenfall
saidrepairs
would
be
needed
to
all
foundations
on
its
Kentish
Flats
and
Horns
Rev
1
wind
farms,
off
the
UK
and
Denmark,
respectively.
Investigations
of
the
Thanet
farm's
monopiles
found
no
sign
of
theaxial
stress
that
can
lead
to
cracks
in
the
TP
and
structural
instability
in
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