wiredinUSA October 2013

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wiredInUSA - October 2013 33
TenneT has granted the Swedish marine
survey specialist MMT with an unexploded
ordnance (UXO) search and clearance
project in the German Bight.
TenneT offshore GmbH (TOG) will be
responsible for the electrical connections
betweenoffshorewindparkswithinGerman
territorial waters in the German Bight (North
Sea) and theGerman electricity distribution
network. A UXO threat was identified in the
threat and risk assessment for the HelWin
2 HVDC and HVAC cable route, so raising
a need for a geophysical survey for the
offshore platform and all cable routes.
The HelWin 2 offshore cable route,
including the HVDC platform area, will be
surveyed from the MMT survey vessel Triad,
using a magnetometer array to detect
anomalies. The survey will be followed by
an identification and removal operation
and possible detonation later in 2013 and
early 2014.
TenneT seeks
UXO
Energinet is seeking cables for the Kriegers
Flak wind farm, east of Denmark, due to
be operational by July 2018. Energinet has
already shortlisted firms for theconstruction
of converter facilities.
The contracts will be tendered in two
lots, with the first comprising the supply
and installation of 320kV high-voltage
direct-current submarine cables, involving
two, 80km long, extruded or single core
cables and one armored fiber optic
cable. The transferred power will reach a
minimum of 600MW.
The second lot relates to the supply
and installation of a 150kV high-voltage
alternating-current (HVAC) three-core
subsea cable, at around 10km long with
500m of spare length. The cables should
be adequate to handle transferred power
of 200MW.
This second lot also includes the supply
and installation of a 150kV HVAC
platform connection, which will comprise
six single-core lead sheathed cables,
measuring 100m in length with an
additional 100m.
Kriegers Flak
tenders
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