where the wind blows…€¦ · 2 towing tugs, 2 floating barges, 1 shear leg crane 1 revolving...
TRANSCRIPT
Where the Wind Blows…
Challenges and lessons leanred
May 9th 2019 HyunTae Cho, Swiss Re Asia Pte. Ltd.,
Weather Conditions in Asia/Korea
2
Typhoon Melor (2009)
50 year peak gust speed(1-minute average)280km/h = 78m/s
Loss at OnShore Wind Farm Erection Risks at Japan
• 20 units of 2.5 MW Wind Turbine under Testing
• Wind Turbines were locked @ Wind Speed of 25m/s
• Blade length – 44m
• 38 Blades out of 60 (3 x 20 units) were damaged
• Loss amount ~ USD48mil
Weather Conditions in Asia/Korea
3
IEC Wind Classes for WTG
50 year peak gust speed(1-minute average)280km/h = 78m/s
Typhoon Melor (2009)
Weather Conditions in Asia/Korea
4
North Sea Europe Asia
50 Year Peak Gust Speed
5
Vessels used for the foundation of offshore wind turbine
Vessels for 1 unit of Foundation
6
Vessels used for the foundation of offshore wind turbine
HGU Infrasea Solutions GmBH (2011)
North SeaVessels
for 1 unit of Foundation
7
Vessels used for the foundation of offshore wind turbine
HGU Infrasea Solutions GmBH (2011)
North SeaAsia/Korea
S. Korea (2015-2017)
Vessels for 1 unit of Foundation
(Source:Swiss Re, photo by HyunTae Cho)
8
Vessels used for the foundation of offshore wind turbine
HGU Infrasea Solutions GmBH (2011)
North SeaAsia/Korea
S. Korea (2015-2017)
Vessels for 1 unit of Foundation
1 Anchor handling boat,2 Towing tugs,2 Floating barges,1 Shear leg crane1 Revolving crane barge1 SEP jack up barge
(Source:Swiss Re, photo by HyunTae Cho)
9
Vessels used for the Offshore Wind Turbine
Installation of the first wind turbine for Gemini Project(Van Oord, 600MW=150@4MW, 2015)
(Source : Van Oord)
1 vessel => 6 WTGs
10
Vessels used for the offshore wind turbine
Installation of the first wind turbine for Tamra OWF(30MW=10@3MW, 2016)
(Source:Swiss Re, photo by HyunTae Cho)
11
Vessels used for OWF in Asia/Korea
• No Specialized Vessel for OWF
• More Vessels, More Difficult, More Time, …
• More Exposure!!!
(Source:Swiss Re, photo by HyunTae Cho)
12
Conditions of Vessels used for OWF in Asia/Korea
• No specialized vessels for OWF
• Lowest bidding for vessels
• Poor quality shabby vessels
• High exposure of pollution from vessels
(Source:Swiss Re, photo by HyunTae Cho)
13
Conditions of Vessels used for OWF in Asia/Korea
• No specialized vessels for OWF
• Lowest bidding for vessels
• Poor quality shabby vessels
• High exposure of pollution from vessels
(Source:Swiss Re, photo by HyunTae Cho)
14
Vessels used for OWF in Asia/Korea
Cable Laying Barge?
= Flat Top Barge + Cable Laying Equipment ??
(Source:Swiss Re, photo by HyunTae Cho)
(Source:Van Oord, Nexus)
15
Vessels used for OWF in Asia/Korea
Cable Laying Barge
= Flat Top Barge + Cable Laying Equipment ??
Flat Top Barge
16
DCM Barge Collapse
Deep Cement Mixing Barge for soft sea bed
= Flat Top Barge + DCM equipment
17
DCM Barge Collapse
Crane Vessel collapse
18
19
Issues about many vessels and barges
20
Issues about mooring line of flat top barges
(Source : Swiss Re, photo by HyunTae Cho)
21
Issues about mooring line of flat top barges
(Source : Swiss Re, photo by HyunTae Cho)
Offshore Substation
22
Fire on offshore substation caused by lighteningduring the construction !
Submarine power cable
23
Submarine Power Cable Damage
24
Jacket damage by vessel collision
25
Issues on Construction Management
26
(Source : Swiss Re, photo by HyunTae Cho)
Issues on Construction Management
27
(Source : Swiss Re, photo by HyunTae Cho)
• Various and Multiple parties working together
• Less understanding on other parties work
• Various Delay Scenarios due to work practice, untimely delivery and completion of work
• Anyone who can manage ???
J F M A M J J A S O N D J F M A M J J A S O N D
Design
Lead Time and Manufacture
Installation
Design
Lead Time and Manufacture
Installation
Design and Routing
Lead Time and Manufacture
Installation
Design and Routing
Lead Time and Manufacture
Installation
Design
Lead Time and Manufacture
Installation
Design
Lead Time and Manufacture
Installation
WTG
Installation
Export Cables
Offshore
Substation
Onshore
Substation
2020
Q1 Q2 Q3 Q4
Inter Array
Cables
WTG
Foundation
Q1 Q2 Q3 Q4
2019
28
Document Review
Vessel Inspection
On-site Surveillancefor loading & unloading of major components including submarine power cable
On-site Surveillanceto the Installation Site
Marine Warranty Surveyor for OWF
Document Review
29
• Design Load check• Method Statement check• Vessel, barge, crane adequacy check• Sea fastening plan check• and so on
Vessel Inspection
30
(Source : Swiss Re, photo by HyunTae Cho)
On-site surveillance – loading & cable loadout
31
(Source : Swiss Re, photo by HyunTae Cho)
On-site surveillance – Installation at site
32
(Source : Swiss Re, photo by HyunTae Cho)
Conclusion
• Ending of our findings & lessons
36
37
Conclusion
Increasing Risk Exposure !
More Vessels
More Contracts
More Documents
TC or EQLess
Experience
J F M A M J J A S O N D J F M A M J J A S O N D
Design
Lead Time and Manufacture
Installation
Design
Lead Time and Manufacture
Installation
Design and Routing
Lead Time and Manufacture
Installation
Design and Routing
Lead Time and Manufacture
Installation
Design
Lead Time and Manufacture
Installation
Design
Lead Time and Manufacture
Installation
WTG
Installation
Export Cables
Offshore
Substation
Onshore
Substation
2020
Q1 Q2 Q3 Q4
Inter Array
Cables
WTG
Foundation
Q1 Q2 Q3 Q4
2019
38
Conclusion
Increasing Risk Exposure !
More Vessels
More Contracts
More Documents
TC or EQLess
Experience
J F M A M J J A S O N D J F M A M J J A S O N D
Design
Lead Time and Manufacture
Installation
Design
Lead Time and Manufacture
Installation
Design and Routing
Lead Time and Manufacture
Installation
Design and Routing
Lead Time and Manufacture
Installation
Design
Lead Time and Manufacture
Installation
Design
Lead Time and Manufacture
Installation
WTG
Installation
Export Cables
Offshore
Substation
Onshore
Substation
2020
Q1 Q2 Q3 Q4
Inter Array
Cables
WTG
Foundation
Q1 Q2 Q3 Q4
2019How to minimize these risks ??
39
Legal notice
40
©2019 Swiss Re. All rights reserved. You are not permitted to create any modifications or derivative works of this presentation or to use it for commercial or other public purposes without the prior written permission of Swiss Re.
The information and opinions contained in the presentation are provided as at the date of the presentation and are subject to change without notice. Although the information used was taken from reliable sources, Swiss Re does not accept any responsibility for the accuracy or comprehensiveness of the details given. All liability for the accuracy and completeness thereof or for any damage or loss resulting from the use of the information contained in this presentation is expressly excluded. Under no circumstances shall Swiss Re or its Group companies be liable for any financial or consequential loss relating to this presentation.