This document discusses the unique challenges of docking and mooring floating storage and regasification units (FSRUs). It summarizes Trelleborg Marine Systems' comprehensive approach to designing integrated mooring systems for FSRUs. The presentation outlines considerations for mechanical elements, instrumentation, control, monitoring, and emergency release across FSRU, jetty, and liquefied natural gas carrier interfaces. It then discusses the evolution of the project designing the mooring system for the Golar Winter FSRU and Petrobras Bahia regasification terminal in Brazil, including load monitoring, remote release capabilities, and data sharing between vessels and shoreside systems.

1. Trelleborg Marine Systems
A Comprehensive Approach to FSRU Docking & Mooring
Systems
November 2012

2. A Comprehensive Approach to FSRU
Docking & Mooring Systems
Agenda
 Introduction
 Defining the unique challenges of FSRU mooring
 Project Evolution of the Golar Winter FSRU and Petrobras Bahia
Regasification Terminal
 Questions
TRELLEBORG GROUP
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3. TRELLEBORG MARINE SYSTEMS
INTRODUCTION
 Trelleborg Marine Systems provides safe berthing and
mooring solutions for demanding marine environments
 History
 Harbour Marine Engineering was established in 1971
 Focus on onshore and offshore mooring equipment since 1980
 Acquired by Trelleborg in 2006
 Technical capabilities
 Proven ability to integrate complex solutions – 50% of LNG jetties
worldwide
 World leader in the supply of quick release hooks
 Complete Design Control
 Mechanical, electrical, instrumentation and software in-house design,
procurement, manufacturing, QA, project management and after sale
service
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4. Ship-To-Ship – FSRU/FLNG APPLICATIONS
 Recent Projects :
 Golar Freeze for Dubai LNG
 Golar Frost for Livorno LNG
 Golar KHANNUR West Java
LNG
 Hoegh FSRU 2459 & 2450
 Golar Winter for Bahia LNG
 Excelerate Escobar
Argentina
 Mooring System Elements
 STS Quick Release Hooks
 Load Monitoring
 Remote Release
 RTK GPS Berthing Aid
 Fenders and Deployment
TRELLEBORG GROUP System
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5. A Comprehensive Approach to FSRU
Docking & Mooring Systems
Agenda
 Introduction
 Defining the unique challenges of FSRU mooring
 Project Evolution of the Golar Winter FSRU and Petrobras Bahia
Regasification Terminal
 Questions
TRELLEBORG GROUP
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6. FSRU Docking and Mooring System General
Observations
 This presentation is focused on onshore/near shore docking and
mooring FSRU applications
 Majority of current projects are floating onshore regas
 We are finding that floating regas are more complex from a
mooring system integration standpoint
 The docking and mooring system elements tend to be
considered in isolation
 LNGC/FSRU – Shipbuilder focusing on primarily FSRU
Ship-to-Ship mooring system hardware
 FSRU/LNG Jetty – Civil EPC focusing on jetty
construction
 The total mooring system must be considered entirety
 The “system” includes mechanical elements, instrumentation and
control & monitoring
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7. Mooring System Arrangements Effect
System Integration Considerations
Where will centralised control & monitoring be located?
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8. Design Considerations
 Mechanical mooring system elements
 Quick Release Hawser Hooks - QRHs
 Coordination of QRH sizing (SWL) between Jetty and FSRU
 OCIMF guidelines versus MCS – Operational based
“recommendations” versus defined maximum structural
limits
 Located on the Jetty
 Semi Permanent nature of FSRU creates special challenges
– mechanical equipment difficult to access for maintenance
 QRHs may also be utilised by transient LNGC
 Mooring lines may be terminated by chain stoppers on
FSRU – typically mooring winch brake is the limiting factor
 Ship-to-Ship FSRU/LNGC
 Length of mooring line affects shock absorbing ability
 Optimizing mooring line arrangement
 Lines are potentially provided by transient LNGC
 Pneumatic fenders and deployment system
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9. Design Considerations
 Operational and Environmental considerations
 Who requires monitoring system data?
 Plant operations/Process Oversight – FSRU and ashore
 Terminal operations floating and ashore
 LNGC deck officers
 Where will the cargo operations be controlled from?
 Safe execution of emergency release – assurance that only
the desired vessel is release during an emergency
 Hazardous versus Non Hazardous
 Equipment selection – intrinsically safe electrics and
instrumentation
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10. Design Considerations
 Overall control and monitoring elements
 MetOcean and Environmental
 Docking Aids
 Mooring System Load Monitoring
 Interface with Ship-to-Ship Link (SSL)
 Where to place the equipment?
 Who needs the information?
 Optimization of cabling (FOL, copper, Wireless)
 Ship-to-Ship Link (SSL) – What is the ESD philosophy across all
vessels?
 SSL – Hot Line and general comms are consistent across all
vessels
 SSL – will mooring line data be transferred via the link or will an
independent system? The demand for data sharing is increasing...
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11. Mooring System Integration Challenges
Safe and coordinated emergency release is critical
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12. Potential for a fragmented system
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13. A Comprehensive Approach to FSRU
Docking & Mooring Systems
Agenda
 Introduction
 Defining the unique challenges of FSRU mooring
 Project Evolution of the Golar Winter FSRU and Petrobras Bahia
Regasification Terminal
 Questions
TRELLEBORG GROUP
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14. Project Evolution
Petrobras Bahia
Regasification Terminal
•Petrobras previously implemented
Pecem & Guanabara FSRU Terminals
•Neither had a monitoring system on
board at specification time.
•TMS supplied a wireless system later
•Petrobras required a permanent
monitoring system in the FSRU with a
view of all the mooring, Shore Side
FSRU & LNGC as well as process
data.
•A new separate Fibre Optic LAN was
specified . Original architecture was
using OPC which was not suitable for
QRH control.
•Trelleborg implemented a solution
over Ethernet with multiple protocols
over the new LAN that allows data
exchange and control of outer hooks
from the FSRU without compromising
safety.
•Data can be viewed from any
suitable equipped workstation on the
network
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15. Project Evolution
Petrobras Bahia
Regasification Terminal –
FSRU side
•Golar Winter
•Control of outer jetty hooks
•Data output for LNGC via standard
SSL MLM Repeater
•FSRU has view of Mooring load
from LNGC and view of total loads
as viewed from Jetty
•System has provision for RTK
GPS STS docking system (option
not taken up yet)
•FSRU has access to all Met Ocean
data as measured from shore side
systems
•FSRU controls remote release of
all LNGC lines, terminating on
FSRU & Jetty
•Data can be provided on handheld
units (option not taken up yet)
TRELLEBORG GROUP
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16. A Comprehensive Approach to FSRU
Docking & Mooring Systems
Agenda
 Introduction
 Defining the unique challenges of FSRU mooring
 Project Evolution of the Golar Winter FSRU and Petrobras Bahia
Regasification Terminal
 Questions
TRELLEBORG GROUP
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17. Stephen Woolway
Offshore Integrated Moorings Systems Business Development Manager
stephen.woolway@trelleborg.com
www.trelleborg.com/marine
TRELLEBORG GROUP
17 October 2, 2008