Increase in personnel safety during turbine access

1
Momac-Offshore-Access-SystemsMOTS SLILAD,
improve the safety of turbine personnel
transfer momac GmbH Co. KG, Germany
PO 208

• Movement compensation 6 degrees of freedom
• max 3.200 mm vertical
  dumping of the vessel
• System weight app. 3.400 kg
• Electrical connections 3-Phase 400VAC, 14 kVA
• The compact design of the robot-based MOTS makes
• an installation possible even on fast service
  catamarans, whereby
• the accessibility to the wind-turbine can be
  substantially increased and
• the journey times can be kept as short as
  possible

Abstract
The first offshore wind park experiences shows
that the availability depends strongly on the
accessibility. The access depends considerably
on the wave heights. A safe Boatlanding is
usually no longer possible for significant wave
heights of 1,5 - 2.0 meters above. Apart from
the ability to access also with large wave
heights the economy of the assigned system is
crucial factor for the selection of the system.
This depends considerably on the necessary
investments, the possible additional load of the
vehicle, the travel times as well as the
operating cost such as personnel expenditure,
fuel consumption and maintenance cost. These
factors depend considerably on the design of
assigned service vessels. Momac developed two
offshore access systems, MOTS a ship mounted
active system, and SLILAD the turbine mounted
a passive system.
SLILAD (Sliding Ladder)
Objectives

• Increase in personnel safety during turbine
  access
• Simultaneous increase in accessibility
• Employment of small and middle vessels
• Compact and easy building method of the system
• max. weight of the system approx. 4 tons
• Use of proven technology- High security for the
  personnel- High reliability- Reduced transfer
  costs

MOTS (Momac-Offshore-Access-System)

• SLILAD Passive System I Turbine mounted
• Increases the security of boadlanding with small
  vessels
• No relative movement vessel to ladder and ladder
  to platform
• SLILAD compensates for the vertical movement of
  the vessel through a locked connection element
• Prior stepping on the SLILAD the ladder is fixed
  to the vessel, after stepping on the SLILAD the
  ladder becomes fixed to the platform
• Automatic tide level adjustment, thereby no
  mussels or other vegetation on the used part of
  the ladder
• Simple and seaworthy construction
• Movement compensation no limits
• Electrical connection none

Results
First function tests were locked successfully. A
promotion as well as a prototype from MOTS is in
manufacturing, the necessary security concepts
are in the test and permission phase. Momac is
looking for a pilot for testing MOTS and
SLILAD. For further information contact Stefan
Leske at the conference.

• MOTS Active System I Ship Mounted
• Self-stabilizing system that provides safe access
  to offshore structures by actively compensating
  for the motions of the vessel
• Combination of proven robotics technology and
  real time motion measurement equipment
• Installation possible in small and fast vessels
  without Dynamic Positioning (DP)
• Can be used on existing boatlandings without
  modification
• Safe system, even in case of power breakdown or
  other failures
• Low-maintenance and seaworthy construction

Direct contact to momacat the conference Phone
49 172 989 0 717
European Offshore Wind 2009
Conference Exhibition, 14 16 September,
Stockholm, Sweden