© 2016 American Bureau of Shipping. All rights reserved

FLNG 2016

Commonalities and contrasts with FSRU and FLNG topside integration

Tor-Ivar Guttulsrod | 21 September 2016London

• Introduction • FLNG overview• FSRU overview• Contrasting FLNGs vs FSRUs• Class role• Key takeaways

Agenda

2 |

• Existing comprehensive offshore gas solution

• ABS classed Floating Offshore Installation

• 100,000 BOPD, 500 MMSCFD gas, 23,000 BPD LPG

• 1 mm bbl oil storage, LPG FSO, offshore Indonesia

• 30 Years Field Life: Start up in 2004

Conoco Phillips-Belanek Natuna FPSO

Image courtesy of ConocoPhillips

3 |

• 1997 - Escravos LPG FSO- First purpose-built - LPG FSO Offshore Nigeria- (Classed by ABS)

• 2005 - Sanha LPG FPSO- First LPG FPSO- (Classed by ABS)

Offshore LPG Solutions

Images courtesy of SBM Offshore & Chevron Shipping Co.

4 |

Offshore Production

5 |

FLNG: Combination of 3 Industries

Onshore LNG LNG Shipping

© mmmx/ Shutterstock © Oleksandr Kalinichenko/ Shutterstock

• Address FLNG specific safety concerns- Potential for gas leaks and explosions

(NG, LPG)- Cryogenic spills

• Cargo containment systems- Requirement for unrestricted partial filling- Offshore maintenance (no dry-docking)

Specific Design Challenges for Floating LNG

• Topsides- Restricted footprint available- Motions and accelerations- Marinisation of process equipment

• Offloading- Side-by-side offloading- Tandem offloading (dedicated ships)

• Establish basis for Rules and Standards

6 |

7 | Title of Presentation Goes Here

• Key criteria- Capacity- Metocean- Gas quality- Liquefaction technology- Products- Offtake solution- Storage system- Mooring- Offtake contracts

FLNG

Image courtesy of Petronas

8 |

2 parallel FEEDs Samsung/JGC & IHI(JMU) /Modec (both with ABS)

FID January 2014 - awarded to JGC-Samsung consortium - ABS Class

• Rotan Gas Field (Petronas – Murphy)- Production capacity

• 1.5 MTPA of LNG- Storage tanks

• 177,000 m3 LNGTwo-row GTT Mark III

• 20,000 m3 Condensate- External Turret mooring

System- Designed for 20 years

without drydocking- Under construction (launched)

Petronas FLNG2

9 |

ABS Notations

A1, Offshore Liquefied Gas Terminal, F(LNG) T

- Structure- Storage- Accommodations- Hull Machinery- Safety Functions - Position Mooring- Export Systems

A1, Offshore Liquefied Gas Terminal, F(LNG) PLSO

- As listing above plus gas processing and liquefaction.

FLNG Unit Classification

10 |

• Is it a ship or an offshore installation?• Common approach is to keep it classed as a ship• Trades as a ship when not in regas service• Additional risk studies required • Cargo containment systems• Requirement for unrestricted partial filling in sheltered waters• Increased design pressure• Equipment• Restricted footprint available• Offloading• High pressure gas arm to jetty• Discharge gas through a turret buoy

Specific Design Challenges for FSRU

11 |

12

Basic principles Regasification process (example)

LNG Vaporizers Metering Unit

LNG Feed pump

Pressure control valve

Swivel

STL Mooring buoy / RiserHeating water booster / circul. 

pump

Steam heater

Cargo Tank SW overboard

SW suction

HP flex. hose

Heating water supply / ballast pump

Suction Drum High Pressure LNG pump

Source: Exmar, Patrick JanssensGastech 2005

• Cargo volume• Regasification capacity• Mooring and export configuration• Boil off gas handling system and

cargo handling• Heating value adjustment

requirement?

FSRU – Key Criteria

13 |

Image courtesy of Wartsila Gas Solutions

• Melaka, Malaysia• Conversion of existing LNGC Tenaga

Satu and Tenaga Empat owned by MISC Berhad (ABS classed)

Sungai Udang Terminal

• Membrane tank vessels ~30 years old• Will serve as jetty-moored FSUs• Regas facility on jetty

Image courtesy of MISC

14 |

Image courtesy of MISC

ABS Notations

A1, Offshore Liquefied Gas Terminal, F(LNG) RSO

- Structure- Storage- Accommodations- Hull Machinery- Safety Functions - Regasification System- Position Mooring- Export Systems

A1, Liquefied Gas Carrier (LNG) RA1, Liquefied Gas Tank Barge, (R), (Site Specific Location) (Duration on Site)

FSRU Unit Classification

15 |

• Need for a sizeable storage volume, preferable the size of a ship’s cargo plus some buffer

• During regasification and liquefaction duty – stay permanent at a location and needs a long term mooring solution

• The processing of gas takes place on deck above cargo containment• Processing equipment needs to be able to operate reliably in the wind, waves

and weather of the project site• Structural dimensioning is typically set by ocean going criteria, transit to site for

the FLNG and trading for the FSRU

FLNG – FSRU similarities

16 |

• The FLNG will never become a trading vessel, whilst many FSRU are • The FLNGs often have loading arms or tandem support system mounted on-

board, while this is very difficult for a unit that will or may trade• Near-shore FLNGs may have similar mooring systems as FSRUs, but true

offshore units are moored as a large FPSO• The FLNG processing and support systems are measured in tens of thousands

of tonnes, whilst the FSRU processing and support is measured in hundreds of tonnes

• Regasification is basically vaporization of a liquid and is a simple process and not much impacted by motion, but pre-treatment and liquefaction is a lot more complex and can be a lot more impacted by motion

FLNG – FSRU differences

17 |

Design Process and Classification Role

Concept

Concept Evaluation

AIP (Approval in Principle)

Basic DesignApproval

Detail DesignApproval

FEEDDesign

DetailDesign

Fabrication

Installation

Operation

FabricationSurvey

Installation,Start-up and

Commissioning

Survey After ConstructionClient

ClassificationSociety

RequiredAvailable Support

PPA (Prelim. Planning & Advice)

Pre-FEEDDesign

18 |

• There are definitively similarities between FSRUs and FLNGs, particularly in cargo and cargo handling

• The floating liquefaction unit is however very much a floating production unit• Most FSRUs are flexible and generic• FSRUs are designed and built as ships to enable them to have a back up

functionality as an LNG carrier, which is what enables them to be ordered on speculation supporting the current flexible market

Key takeaways

19 |

© 2016 American Bureau of Shipping. All rights reserved

www.eagle.orgThank You