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www.momac-group.de momac Offshore-Access-System MOTS © Copyright momac 2011
MOTSMOTSMMomacomac OOffshoreffshore
TTransferransfer SSystemystem
Dipl. - Ing. Stefan Leske, momac GmbH & Co. KG
www.momac-group.de momac Offshore-Access-System MOTS © Copyright momac 2011
Content
� Market request
� MOTS concept
• Main technical data
• Benefits
• Ideal vessel
� Safety concept
• Behavior of the system when problems occur
� Video first sea trial
� Flexibility and scale up
• Higher reach
• DP vessel operation
• Ship to ship transfer
� Regulators voice
� Summary
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www.momac-group.de momac Offshore-Access-System MOTS © Copyright momac 2011
Content
Market request
www.momac-group.de momac Offshore-Access-System MOTS © Copyright momac 2011
Market request
� Light weight / small system
� Economically priced system
� Easy to use, no operator
� Safe turbine access up to 2,5 meters Hs
� No modification of wind turbine/foundation
structure
momac solution: MOTS
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www.momac-group.de momac Offshore-Access-System MOTS © Copyright momac 2011
Content
MOTS concept
www.momac-group.de momac Offshore-Access-System MOTS © Copyright momac 2011
MOTS concept
• reliable self-stabilizing offshore transfer system for
personnel and material
• active motion compensation for waves up to 2,5
meters Hs*, 6 degrees of freedom
• no specialized operating personnel
• no modifications to existing boat landing
• low maintenance costs
• full service package and
long term warranty contract available
*denpending on the vessel
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www.momac-group.de momac Offshore-Access-System MOTS © Copyright momac 2011
MOTS concept
• proven robotics technology and real time motion
measurement equipment
• fail safe control system
• active corrosion protection
• protection against unauthorized manipulation
• Patent pending in Europe, US, China
PCT/ EP2009/003049
www.momac-group.de momac Offshore-Access-System MOTS © Copyright momac 2011
MOTS main technical data
� Active compensation of all ship
movements, vertical up to 3,2 meters
� System weight
3,800 kg at the installation point
4,500 kg total system weight
� Basket capacity: 150 kg
� Deck space requirement
sailing: 4 x 2 m , operation: 4 x 4 m
� Electrical system
Power supply 3~ 400 VAC,16 kVA
� Deployment and recovery time
app. 2 – 3 minutes
captain bridgecontrol unit
controlunit
socket sensorik
basket
robot
optimal distance
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www.momac-group.de momac Offshore-Access-System MOTS © Copyright momac 2011
Basket design
Laser sensors(for distance control)
Bar graphGreen = step over
Yeollow = near to
kinematik limit
Red = over kinematik
limit
Safety edges
www.momac-group.de momac Offshore-Access-System MOTS © Copyright momac 2011
Operational constraints
� Compensated wave height 2,5 m Hs
(depending on the vessel)
� Operation not effected by
• wind direction
• current and tide
• fog, rain, and snow
� Max. ship movement
• HEAVE 3,2 meters
• YAW +/- 10 deg.
• PITCH +/- 10 deg.
• ROLL +/- 10 deg.
MOTS500
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www.momac-group.de momac Offshore-Access-System MOTS © Copyright momac 2011
System weights
At installation point
Additional units (control, air blower etc.)
Total weight
3 800 kg 800 kg 4 500 kg
4 700 kg 850 kg 5 550 kg
6 100 kg 900 kg 7 000 kg
8 200 kg 950 kg 9 150 kg
6100 kg
7350 kg
8800 kg
10 950 kg
MOTS 500
MOTS 500 DP
MOTS 1000
MOTS 1000 DP
MOTS 500 C
MOTS 500 DPC
MOTS 1000 C
MOTS 1000 DPC
www.momac-group.de momac Offshore-Access-System MOTS © Copyright momac 2011
MOTS benefits
Costs
• Increase of availability = Reduced loss revenue
• Reduction of vessel and staff costs
• Low capital cost, low operation & maint. costs
Flexibility
• Transfer personnel, even injured persons
• “Ship to turbine” and “ship to ship” transfer
• Transfer material
Safety
• No relative motion between basket and turbine
• Safe step over
Availability
• Increase of access: 2,5 meters Hs���� + 66%
• Increase of availability: + 22% >> + 80 days
ROIROI
1 year1 year
+ 22 % + 22 % availabilityavailability
safe safe accessaccess
Personnel Personnel / material/ materialtransfertransfer
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www.momac-group.de momac Offshore-Access-System MOTS © Copyright momac 2011
Cost benefits
www.momac-group.de momac Offshore-Access-System MOTS © Copyright momac 2011
Ideal vessel
General
� supports 3,8 tons load at MOTS installation point (3,3 meters bow/stern)
� supports 4,5 tons additional load (total system weight incl. panel, UPS,…)
� deck space: app. 4 m x 4 m (operation)
� electrical power supply : 3 ~ 400V +/- 10% , 15 kVA
� contact to the boat landing with roller fender (bow or stern)
� Catamaran / Monohull > 20-25 m
� DP vessel
• positioning accuracy: 1 meter
• distance vessel – turbine: 1,5-2,5 m
� Working boat, tug, … > 30 m
Win
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www.momac-group.de momac Offshore-Access-System MOTS © Copyright momac 2011
Content
MOTS safety concept
www.momac-group.de momac Offshore-Access-System MOTS © Copyright momac 2011
Failure mode / safety in case of failure
System safetySystem safety
• Safety in case of power failure
• Safety in case of control failure
• Safety in case of component failure
• Safety in case of incorrect operation
• Safety in case of collision with turbine
• ...
Operational safetyOperational safety
• Safety on deck / work area
• Safety during operation /
transfer process
• Safety in case of unacceptable
environmental conditions
• Safety during sailing
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www.momac-group.de momac Offshore-Access-System MOTS © Copyright momac 2011
Operational safety
Captain is responsible for the safety on
deck and MOTS operation !
� automatic locking of MOTS in case
unacceptable environment conditions
� captain gives “green light” for use of
MOTS
� easy to use, fully automatic
� clear and simple operational instructions
for the crew
� defined restricted area during operations
� visual and audible signal before
operation
� In basket Panic switch
� …
www.momac-group.de momac Offshore-Access-System MOTS © Copyright momac 2011
Health and safety risks
POWERFAILURE
• UPS for 5 minutes operation
CONTROL FAILURE
• Safety SPS
• redundant control system
COMPONENT FAILURE
• short operating time in relation to the calculated lifetime � extremely low risk
• preventive maintenance for the key components
INCORRECT OPERATION
• full automatic system, self controlled, redundant, permanent control of the environment conditions, warning signal in case of operation near to the limits
TURBINE COLLUSION
• permanent monitoring of the turbine distance
• strong basket, visual and audible warnings to the captain � remove vessel from turbine
???• safe in all situations!
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www.momac-group.de momac Offshore-Access-System MOTS © Copyright momac 2011
Additional system safety
OPERAT.CONCEPT
• Three button operation, optically and acoustically warning, fail save
• Continues kinematic limit control, measurement of wave high
SIGNALS
• Permanent control of the environment conditions, safe edge
• Optically and acoustically warning signals in case of operation near to the limits, bar graph
PROVENTECHNOL.
• Use of proven robotic and control technology, fault rate <1%
PASSIVESAFETY
• Basket design, aligned space between basket and ladder
HUMANRESPONS.
• Captain has the control, removes vessel from turbine in case of problems
???• Safe in all situations!
www.momac-group.de momac Offshore-Access-System MOTS © Copyright momac 2011
Wave out of range (scheme)
2 m Hs
3 m Hs
1 m Hs
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www.momac-group.de momac Offshore-Access-System MOTS © Copyright momac 2011
.
Regulators position
GL / DNV / LR / BV … approval
• GL / DNV / LR / BV ,… have to evaluate the impacts
of MOTS regarding the stability of every vessel.
• MOTS is not a integral component of a vessel.
Therefore is no obligation of a GL / DNV / LR
certification of MOTS as a system.
Professional association approval
• MOTS is in the approval process by the German
professional association (old “SeeBG”). Approval of
the safety concept and features is pending.
• UK MCA will be contacted next to clarify the needs of
the UK market. Who is the authority in UK?
www.momac-group.de momac Offshore-Access-System MOTS © Copyright momac 2011
Service Concept
� Basic service
• Service on board
• 2 years warranty
� Full service / evolution packages available
• yearly system change
• yearly system update
• exchange unit in case of damage
• extended warranty up to 5 years
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www.momac-group.de momac Offshore-Access-System MOTS © Copyright momac 2011
Content
Prospects
www.momac-group.de momac Offshore-Access-System MOTS © Copyright momac 2011
Prospects / Scale up
� Sea trial has been successfully completed
� MOTS development is on going
• Operation on DP vessel
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www.momac-group.de momac Offshore-Access-System MOTS © Copyright momac 2011
MOTS on DP vessels: MOTS 500 DP
Distance Distance
vessel / turbinevessel / turbine
1,5 1,5 –– 2,5 m2,5 meterseters
Controlled axle 7Controlled axle 7
compensation of compensation of
1 meter surge1 meter surge
www.momac-group.de momac Offshore-Access-System MOTS © Copyright momac 2011
Prospects / Scale up
� Sea trial has been successfully completed
� MOTS development is on going
• Operation on DP vessel
• “MOTS-500C” container version
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www.momac-group.de momac Offshore-Access-System MOTS © Copyright momac 2011
MOTS 500 C or DPC
� mounted on a modified
20 foot flat container
� control panel, UPS and air supply
in the container
� weight aprox. 7-8 tons!
� use of existing Twist-Locks
� easy and quick installation
� low cost transport
� easy storage
“C” for container version
www.momac-group.de momac Offshore-Access-System MOTS © Copyright momac 2011
Prospects
� Sea trial has been successfully completed
� MOTS development is on going
• Operation on DP vessel
• “MOTS-500C” container version
• “Follow mode”: ship – ship transfer
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www.momac-group.de momac Offshore-Access-System MOTS © Copyright momac 2011
Ship – ship transfer
“Follow mode”
Personnel transfer
accommodation vessel - crew vessel
www.momac-group.de momac Offshore-Access-System MOTS © Copyright momac 2011
Prospects / Scale up
� Sea trial has been successfully completed
� MOTS development is on going
• Operation on DP vessel
• “MOTS-500C” container version
• “Follow mode”: ship – ship transfer
• Scale up � MOTS 1000
- Heave up to 4,200 mm, more reach
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www.momac-group.de momac Offshore-Access-System MOTS © Copyright momac 2011
That’s why you should use MOTS !
� Safe transfer up to 3.2 metres vertical movement of the
vessel
� Material transfer and transfer of injured persons
� Can be used on any boat landing / wind power plant
without modification / adaptation
� Fully automatic transfer concept
� Comprehensive safety concept
� Low-maintenance, no maintenance work at sea,
low maintenance costs, full service package available
� Full service / evolution packages available
� Low investment in system and vessel,
very short “return on investment”
� No special operating personnel necessary
www.momac-group.de momac Offshore-Access-System MOTS © Copyright momac 2011
•• „Safety First“„Safety First“ - MOTS enable an substantial increase of
safety, in particular with view on the transfer numbers which
are expected
• MOTS enable an increase of increase of accessibilityaccessibility and thus to the
economyeconomy of the planned offshore wind parks without
investments into expensive special vessels
• Service costs can be reduced by using MOTS,
which brings ecological advantagesecological advantages apart from
the economic advantageseconomic advantages
Summary
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www.momac-group.de momac Offshore-Access-System MOTS © Copyright momac 2011
For more information or
a trial at your vessel
please contact
momac GmbH & Co.KGAm Schürmannshütt 39D-47441 Moers, Germany
Contact: Stefan LeskeT. +49 – 2841 – 1802 . 21M. +49 - 172 989 0 717s.leske@momac.de
Web: www.momac-group.de
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