MOTS presentation GB V110310 Handout version · ... aligned space between basket and ladder HUMAN...

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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


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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Content

Market request


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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Content

MOTS concept


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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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


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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Basket design

Laser sensors(for distance control)

Bar graphGreen = step over

Yeollow = near to

kinematik limit

Red = over kinematik

limit

Safety edges


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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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


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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Cost benefits


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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Bay

Bay

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Content

MOTS safety concept


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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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

� …


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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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!


Wave out of range (scheme)

2 m Hs

3 m Hs

1 m Hs

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.

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?


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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Content

Prospects


Prospects / Scale up

� Sea trial has been successfully completed

� MOTS development is on going

• Operation on DP vessel

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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






• “MOTS-500C” container version

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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


Prospects





• “Follow mode”: ship – ship transfer

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Ship – ship transfer

“Follow mode”

Personnel transfer

accommodation vessel - crew vessel







• “Follow mode”: ship – ship transfer

• Scale up � MOTS 1000

- Heave up to 4,200 mm, more reach

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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


•• „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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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 [email protected]

Web: www.momac-group.de

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MOTS presentation GB V110310 Handout version · ... aligned space between basket and ladder HUMAN...

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Transcript of MOTS presentation GB V110310 Handout version · ... aligned space between basket and ladder HUMAN...