offshore access: “a key driver to increase offshore wind farms efficiency” 22nd april, 2010,...
TRANSCRIPT
EWEC 2010 – Warsaw
Offshore Access: “A key driver to increase offshore wind
farms efficiency”
22nd April, 2010, “Offshore access, safety and standards”
INDEX
INTRODUCTION
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BACKGROUND
ACCESS & TRANSFER SYSTEMS
RESULTS
DISCUSSION
CONCLUSIONS
INTRODUCTION
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OWF Availability (Accessibility + Reliability)
OWF Efficiency (Energy yield, CAPEX, OPEX) vs Incomes
ACCESSIBILITY KEY DRIVER
BACKGROUND
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Lack of Offshore Wind Accessibility rules and standards
Guidelines and recommendations “to perform controlled access and transfer of personnel to and from offshore structures”
Identify necessary protection & transfer equipments, guidelines for maintenance works & for fast crew boats and their operators, etc.
Create a PROPER STANDARD FOR OWF
WORKSCOPE: Offshore wind sector itself and additional areas (H&S, O&M, oil & gas)
“OS-J201 Offshore Substations for Wind Farms (Section 7. Access and Transfer)”.- DNV (Oct´09) “OHSAS 18001 Health & Safety Standard”.- Occupational Health & Safety Advisory Services
(OHSAS). “Environmental, Health and Safety Guidelines for Wind Energy”.- International Finance Corporation
(World Bank Group). “Recommendations for Design of Offshore Wind Turbines (RECOFF) (Work Package 6: Operation
and maintenance: labor safety and standard method for data collection)”.- EU Project Recommendations for Design of Offshore Wind Turbines.
“Guidelines for Health & Safety in the industry”.- BWEA Operational Safety Rules Group. “The Health and Safety Risks an Regulatory Strategy Related to Energy Developments”.- UK
Health and Safety Executive (HSE). “DS/EN 50308 Wind turbines - Protective measures - Requirements for design, operation and
maintenance”.- Dansk Standard. “ANSI Z-10 Occupational Health and Safety Management System”.- American National Standards
Institute (ANSI). “CAP 437 Offshore Helicopter Landing Areas – Guidance on Standards”.- Civil Aviation Authority
UK. “OS-E401 Helicopter decks”.- DNV.
CERTIFICATION AND CLASSIFICATION STANDARDS FOR OFFSHORE WIND ACCESIBILITY
ACCESS & TRANSFER SYSTEMS
MARINE ACCESS
MONOHULL WORKBOATS
CATAMARAN WORKBOATS
SWATH WORKBOATS
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ACCESS SYSTEMS
MONOHULL CATAMARAN SWATHLength m 15 20 25
Beam m 5 7 15
Draft m 1 0,9 2,7
Displacement ton 28 25 125
Engine power kW 1.500 750 1.580
Speed (service / max) kt 20 / 24 25 / 28 15 / 18
Fuel consumption l/h 220 150 300
Wave height acceptance m 1,5 2 3,5
Load capacity ton 1 2,5 3
Personnel capacity # 8 12 12
STATE OF ART OF OFFSHORE ACCESS SYSTEMS
AERIAL ACCESS
UTILITY HELICOPTER
OFFSHORE TRANSPORT HELICOPTER
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UTILITY HELICOPTER:
Cruise speed:155 knots
Wind speed acceptance: 40-50 knots
Payload capacity: 1 ton
Personnel capacity: 4 persons
Consume (cruise speed):190-220 kilos/hour
OFFSHORE TRANSPORT HELICOPTER:
Cruise speed:140 knots
Wind speed acceptance: 40-50 knots
Payload capacity: 5 ton
Personnel capacity: 19 persons
Consume (cruise speed):500 kilos/hour
STATE OF ART OF OFFSHORE ACCESS SYSTEMS
ACCESS & TRANSFER SYSTEMS
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STATE OF ART OF OFFSHORE ACCESS SYSTEMS - CHARTS
ACCESS & TRANSFER SYSTEMS
FENDERING SYSTEMS
Personnel capacity:
1 person each Load capacity:
100-150 kg + additional workboat hoist device capacity Wave induced movement compensation?
Boat compensation + boat engine force Wave height acceptance (Hs) :
Boat acceptance (1m - 2,5m) Special needs:
Workboat bow design
Offshore structure design
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STATE OF ART OF OFFSHORE TRANSFER SYSTEMS
ACCESS & TRANSFER SYSTEMS
GANGWAY DOCKING SYSTEMS
OFFSHORE ACCESS SYSTEM (OAS) – Offshore Solutions BV Personnel capacity:
3 persons Load capacity:
300 kg Gangway size (length x width):
17,5 m x 0,8 m Wave induced movement compensation?
Heave compensation Wave height acceptance (Hs):
2,5 m Special needs:
23 ton payload DP2 vessel
Offshore structure design (vertical pole & deck)
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STATE OF ART OF OFFSHORE TRANSFER SYSTEMS
ACCESS & TRANSFER SYSTEMS
GANGWAY DOCKING SYSTEMS
OFFSHORE TRANSFER SYSTEM (OTS) – Offshore Solutions BV (Prototype) Personnel capacity:
3 persons Load capacity:
300 kg Gangway size (length x width):
9 m x 0,6-0,8 m Wave induced movement compensation?
No Wave height acceptance (Hs):
1,5 m Special needs:
Offshore structure design (vertical pole )
4,2 ton payload vessel
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STATE OF ART OF OFFSHORE TRANSFER SYSTEMS
ACCESS & TRANSFER SYSTEMS
GANGWAY DOCKING SYSTEMS
WATERBRIDGE TURBINE– IHC Engineering Business (*) Personnel capacity:
1 person Load capacity:
150 kg Gangway length :
8 m Wave induced movement compensation?
No Wave height acceptance (Hs):
2,5 m Special needs:
Minimal modifications in the offshore structure
(*) Included in WaterBridge solutions family: WB Turbine, WB Seal-slide, WB Barge and WB Platform
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STATE OF ART OF OFFSHORE TRANSFER SYSTEMS
ACCESS & TRANSFER SYSTEMS
PERSONNEL CARRIERS
PTS – Personnel Transfer System (Preproduction)
Personnel capacity:
1 person Load capacity:
500 kg Weight:
4,5 ton Wave induced movement compensation?
Full heave compensation (6 metres distance range) (*)
Wave height (Hs)/ wind speed acceptance:
3 m / 18 m/s Special needs:
Vessel able to sail and hold position in 3m wave height seas
(*) A project specific version is also available (without compensation): load capacity: 2-5 ton; range max: 8 m; wave height: 1,5 m)
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STATE OF ART OF OFFSHORE TRANSFER SYSTEMS
ACCESS & TRANSFER SYSTEMS
PERSONNEL CARRIERS
FROG, TORO (combined with Vessel Based Lift Facility) – Reflex Marine (*) (**)
Personnel capacity:
1-4 persons Wave induced movement compensation?
Yes, with a compensated crane structure (for roll and pitch planes) Wave height (Hs) and wind speed acceptance :
Depends on crane and vessel wave height acceptance Special needs:
DP II vessel preferable
Compensated crane structure
(*) Transfer capsule: production stage, Lifting arrangement: concept stage.
(**)Two more concept variations: Turbine based lift gear and Capsule based lift gear.
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STATE OF ART OF OFFSHORE TRANSFER SYSTEMS
ACCESS & TRANSFER SYSTEMS
FULL COMPENSATED SYSTEMS
AMPELMANN – Ampelmann Operations BV Dimensions (Width x Depth x Height)
8 m x 8 m x 8 m (+ 12 m gangway) Payload capacity:
240 kg (at 20 m range) Wave induced movement compensation?
Yes, 6-DOF (2,4 m, 10º) Wave height acceptance (Hs):
2,5 m-3 m (depending on vessel size) Wind speed acceptance :
35 knots Special needs:
Minimum 25 m beam vessel (80 m preferred)
32 ton payload vessel (Ampelmann weight)
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STATE OF ART OF OFFSHORE TRANSFER SYSTEMS
ACCESS & TRANSFER SYSTEMS
FULL COMPENSATED SYSTEMS
MOMAC OFFSHORE TRANSFER SYSTEM (MOTS) – MOMAC (Testing stage) Dimensions (Length x Wide x Height)
4 m x 1,8 m x 4,5 m Payload capacity:
400 kg Wave induced movement compensation?
Yes, vessel is led to the turbine by a roller fender in X and
Y axle. In Z axle 3,2 m Wave height acceptance (Hs):
Depends on the used vessel (2,5 m with a 35 m vessel) Special needs:
Minimum 5 ton payload vessel (MOTS weight)
Roller fender system to led the vessel to the boat-landing
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STATE OF ART OF OFFSHORE TRANSFER SYSTEMS
ACCESS & TRANSFER SYSTEMS
OTHER ACCESS METHODS
SELSTAIR – Viking Life
WINDLIFT – Fr. Fassmer GmbH
BOAT ACCESS SYSTEM – Caley Ocean Systems
SLILAD - Momac
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STATE OF ART OF OFFSHORE TRANSFER SYSTEMS
ACCESS & TRANSFER SYSTEMS
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STATE OF ART OF OFFSHORE TRANSFER SYSTEMS - CHARTS
ACCESS & TRANSFER SYSTEMS
METOCEAN CONDITIONS (Beaufort scale)
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ACCESS SYSTEMS MC= 0-4 BS MC = 5 BS MC = 6 BS MC > 6 BS
MONOHULL OOO - - -
CATAMARAN OO OOO - -
SWATH O OO OOO -
HELICOPTER O O OO OOO
Iberdrola Ingeniería y Construcción - EWEC 2010 (Warsaw)
(-) Impossible to deliver the serviceO Can deliver the service with poor effectivenessOO Can deliver the service with medium effectivenessOOO Can deliver the service with good effectiveness
Main used variables:- Wave Hs (marine)- Wind speed (aerial)
RESULTS
COMPARISION AND ASSESSMENT CRITERIA FOR ACCESS CLASIFICATION ACCORDING TO SITE FEATURES
DISTANCE TO COAST (d)
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COMPARISION AND ASSESSMENT CRITERIA FOR ACCESS CLASIFICATION ACCORDING TO SITE FEATURES
ACCESS SYSTEMS d ≈ 10 km d ≈ 20 – 40 km d >> 50 km
MONOHULL OOO OO O
CATAMARAN OO OOO OO
SWATH O OO OOO
HELICOPTER O OO OOO
Iberdrola Ingeniería y Construcción - EWEC 2010 (Warsaw)
(-) Impossible to deliver the serviceO Can deliver the service with poor effectivenessOO Can deliver the service with medium effectivenessOOO Can deliver the service with good effectiveness
Main used variables:- Access speed- Wave acceptance- Range
RESULTS
LOAD CAPACITIES (according with cargo/personnel transportation)
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ACCESS SYSTEMS < 8 persons< 1 ton
8 – 10 persons1 – 2,5 tons
> 10 persons> 2,5 tons
MONOHULL OOO - -
CATAMARAN O OO -
SWATH O O OO
HELICOPTER (UTILITY) O - -
HELICOPTER (TRANSPORT) O O O
Iberdrola Ingeniería y Construcción - EWEC 2010 (Warsaw)
(-) Impossible to deliver the serviceO Can deliver the service with poor effectivenessOO Can deliver the service with medium effectivenessOOO Can deliver the service with good effectiveness
Main used variables:- Load capacity- Personnel capacity
RESULTS
COMPARISION AND ASSESSMENT CRITERIA FOR ACCESS CLASIFICATION ACCORDING TO SITE FEATURES
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TRANSFER SYSTEMS MC= 0-4 BS MC = 5 BS MC = 6 BS
FENDERING OOO - -
OAS O OO -
OTS (prototype) OO - -
WATERBRIDGE OO OOO -
PTS (prototype) O OO -
AMPELMANN O OO OOO
MOTS (prototype) O OO OO
Iberdrola Ingeniería y Construcción - EWEC 2010 (Warsaw)
(-) Impossible to deliver the serviceO Can deliver the service with poor effectivenessOO Can deliver the service with medium effectivenessOOO Can deliver the service with good effectiveness
Main used variables:- Wave Hs (marine)- Wind speed (aerial)
RESULTS
COMPARISION AND ASSESSMENT CRITERIA FOR TRANSFER CLASIFICATION ACCORDING TO SITE FEATURES
METOCEAN CONDITIONS (Beaufort scale)
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TRANSFER SYSTEMS1 person
100-150 kg2-3 persons200-300 kg
> 3 persons> 300 kg
FENDERING OOO OO O
OAS O O OO
OTS (prototype) O OO OOO
WATERBRIDGE O OO OOO
PTS (prototype) O - -
AMPELMANN O OO OO
MOTS (prototype) O OO OO
Iberdrola Ingeniería y Construcción - EWEC 2010 (Warsaw)
(-) Impossible to deliver the serviceO Can deliver the service with poor effectivenessOO Can deliver the service with medium effectivenessOOO Can deliver the service with good effectiveness
Main used variables:- Load capacity- Personnel capacity
RESULTS
COMPARISION AND ASSESSMENT CRITERIA FOR TRANSFER CLASIFICATION ACCORDING TO SITE FEATURES
LOAD CAPACITIES (according with cargo/personnel transportation)
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CONCLUSIONS
Make a good Definition of O&M needs and a good Site characterization
Make a good simulation of project lifecycle through statistical methodologies
Balance correctly Access times & average vs Costs
Design the access system from the project start point No surprises!!!
There´s a need of a PROPER OFFSHORE WIND ACCESS STANDARD
Do not forget any system requirements !!!
Choose the right system for the right place !!!
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ACKNOWLEDGEMENTS & GRATTITUDES