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Ship to Ship LNG Transfer Technology. 2 Excelsior Class EBRV 138,000 m 3.

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Presentation on theme: "Ship to Ship LNG Transfer Technology. 2 Excelsior Class EBRV 138,000 m 3."— Presentation transcript:

1 Ship to Ship LNG Transfer Technology

2 2 Excelsior Class EBRV 138,000 m 3

3 3 LNG STS Transfer Double Banked at Anchor

4 4 LNG STS Configurations LNG Transferred via Ship to Ship Transfer Gas Delivered from EBRV to facility via HP Gas Arm LNG transferred across dock from LNG Carrier Gas Delivered from EBRV to facility via HP Gas Arm LNG transferred from LNG Carrier to EBRV down the dock Gas Delivered from EBRV to facility via HP Gas Arm Gas LNG Gas LNG Gas LNG

5 5 LNG Lightering

6 6 Double-Banked at Bahia Blanca

7 7 Bahía Blanca GasPort (Argentina) Dockside LNG regasification Utilizes ship-to-ship LNG transfer with continuous natural gas send out Capable of 400 mmscfd throughput (closed-loop mode) Provides seasonal service during Argentine winter Short development time and low cost Final investment decision to in- service in less than 6 months Fixed facilities cost <5% of a land-based LNG terminal Project partners are YPF and Repsol-Gas Natural Excelsior docked at the Bahía Blanca GasPort Gas offloading arm Bahía Blanca GasPort

8 8 LNG STS Transfer Risk Management L N G means Lets Not Guess

9 9 Developed with partners Exmar NV / Exmar Offshore USA Skaugen PetroTrans STS Operation must meet applicable standards IMO - Gas code Class approvals by BV for LNG-RVs, focus unrestricted liquid levels / all shipboard systems. IACS rules for LNGC: - Liquid level restrictions due to sloshing loads OCIMF / SIGTTO Ship to Ship Transfer Guide (Liquefied Gases) Second Edition / Draft LNG STS Transfer Guidelines SIGTTO LNG specific STS Transfer Considerations USCG: 33 CFR 156 Subpart B and C EN standards for cryogenic transfer systems LNG STS Transfer Partners / Development Basis

10 10 LNG STS Transfer Initial Engineering & Feasibility By BUREAU VERITAS Target: assess measurable operational criteria to avoid sloshing damage in LNG-C due to any level of partial filling during LNG transfer Conclusion: LNG-C maximum roll angle 2° ; keep heading +/-30° into direction of significant waves H s < 2.0 m BY GTT Target: determine the maximum LNG transfer flow rate compatible with the treatment capacity of the increased Boil-Off Gas (BOG) Conclusion: Up to 6,000 m3/h with 60 mbar cargo tank pressure difference between LNG-RV and LNG-C HAZID / HAZOP : Original STS design Lloyds Register / BMT

11 11 LNG STS Transfer Risk Based Assessments Computer Motion Simulation Exmar Offshore / Yokohama Rubber Co. Ltd. Maneuvering Simulations Ship Maneuvering Simulator Training Center – Trondheim / Antwerp Maritime Academy / Lloyds Register / South Tyneside Technical College / SIPORT – Madrid STS Operations Plan Skaugen PetroTrans Dynamic Mooring Analysis Tension Technologies International Operation Manuals for rigging STS equipment Developed based on extensive practical tests on board HAZID / HAZOP : final review Including operation manuals, training and procedures (Lloyds Register)

12 12 Spool pieces Flexible hoses Saddles 3 liquid lines 6 hoses 1 vapour line 2 hoses Feeder ship LNGRV Blank flange Water curtain & bath LNG STS Transfer Manifold Configuration Dry-Break ERC

13 13 LNG STS Transfer Gear General Arrangement

14 14 LNG STS Transfer Equipment Class Approvals Reducing Y Spool Pieces Class approval (BV) Emergency Release Couplings Type approval (BV) LNG Cargo Transfer Hoses Type approval (DNV) Manifold platform structural verification Class approval (BV) Hose Support Saddle verification Class approval (BV)

15 15 LNG STS Transfer Cargo Transfer Hose Stainless Steel End Fittings Epoxy Filled & Swaged Standard ANSI 8 Flange Type Approved by Class for STS Transfer of LNG EN 1474 Compliant

16 16 LNG STS Transfer Cargo Transfer Hose 57 Layers of Polyethylene Film and Fabric Inner / Outer Stainless Mandrel Electrically Continuous Failure Mode Leak before fail 400,000 Cryogenic Cycles Comprehensive testing by TNO Flow tests at Nikisso w/ up to 1500 m 3 /hr

17 17 LNG STS Transfer Cargo Transfer Hose Composite Hose 8 Diameter 15 m Length 0.65 m Min. Bend Radius 300 Liter Volume per Hose DNV Type Approved Fit for Purpose Light and Flexible

18 18 LNG STS Transfer Cargo Hose Storage Hose Storage on EBRV Test Blinds on Hose Ends Internal Nitrogen Blanket Test, Inspection, Records

19 19 LNG STS Transfer Cryogenic Hose Impact Test 224 kg x 1.5 m 3 bar LN 2 No Leakage

20 20 LNG STS Transfer Sudden Impact!

21 21 LNG STS Transfer Cryogenic Hose Impact Test

22 22 LNG STS Transfer Cryogenic Hose Crush Test 200 mm Crush Plate 270 kN 3 bar LN bar Pressure Test Severe Leakage – No Burst

23 23 LNG STS Transfer Cryogenic Hose Crush Test

24 24 LNG STS Transfer Cryogenic Hose Pressure Test

25 25 LNG STS Transfer Cryogenic Hose Integrity 50% Damage of Outer SUS Wire 6 bar – No Leakage 34 bar – Burst Pressure – No Jetting

26 26 LNG STS Transfer Cryogenic Hose Cycling 400,000 Cycles 2 Meter Stroke Certified by TNO

27 27 LNG STS Transfer Hose Support Saddle One per Hose Pair – Total Four Saddles on Each Vessel Provides Protection and Support in Way of Hand Rails Maintains Adequate Bend Radius of Hose Transfer Loads from Hoses to Manifold Deck Chafe Protection for Hoses 8 mm Marine Aluminum FMEA on saddle

28 28 LNG STS Transfer Hose Support Saddle

29 29 LNG STS Transfer Reducing Wye Spool Pieces 16 x 12 x 8 (2) Standard ANSI 150# Flanges BV Class Approved Handled by Crane Horizontally

30 30 LNG STS Transfer Specific Controls and Safety Emergency Shut Down (ESD) Pneumatic ESD systems connecting LNGC with EBRV Electric and / or Fiber Optic umbilical available Additional Water Curtain System at both manifold areas Protect ships trunk deck / cargo tank covers from accidental LNG release Includes water bath on main deck under manifold area

31 31 LNG STS Transfer Water Curtains & Bath Additional water curtain rigged under each manifold Water bath installed on deck under manifold using dams

32 32 LNG STS Transfer Emergency Release Couplings Emergency Release Couplings (ERC) KLAW quick release couplings => quick disconnect of hoses in emergency situations Remote operation Dry Break Extensive test in cryogenic conditions for STS type approval Actuator reinforced for cryogenic operations

33 33 LNG STS Transfer Dry-Break Emergency Release Coupling

34 34 LNG STS Transfer Emergency Release Coupling BV Class Approved Function Tested w/ 1 Hard Ice Liquid 10 bar

35 35 LNG STS Transfer ERC Actuated 0.8 Liter Volume Between The Disks

36 36 LNG STS Transfer Hose Brake System

37 37 LNG STS Transfer Equipment, Controls and Safety Emergency Shut Down (ESD) Pneumatic ESD systems connecting LNGC with EBRV Electric and Fiber Optic umbilical available Additional Water Curtain System at both manifold areas Protect ships trunk deck / cargo tank covers from accidental LNG release Includes water bath on main deck under manifold area Emergency Release Couplings KLAW quick release couplings offer quick disconnect of hoses in emergency situations Remote operation Dry Break

38 38 LNG STS Transfer Fender Arrangement

39 39 LNG STS Transfer Approach Maneuver

40 40 LNG STS Transfer Coming Alongside

41 41 LNG STS TRANSFER Mooring Operation

42 42 LNG STS Transfer Cargo Hoses Rigged

43 43 LNG STS Transfer Gear Placement

44 44 LNG STS Transfer Hose Connection

45 45 LNG STS Transfer Line Cooldown

46 46 LNG STS Transfer Projected Time Line Rigging Fenders 1 hr Approach Maneuver1 hr Mooring 2 hrs Pre-Transfer Meeting / Gauging1 hr Connect Hoses2 hrs Line Cooldown1-½ hr ESD / ERC Tests½ hr Cargo Transfer (130,000 m 5000 m 3 /hr)26 hrs Hose Drain / Purge / Disconnect4 hrs Unmooring / Vessel Separation1 hr Fender Recovery1 hr Total Projected Time41 hrs

47 47 1 st Commercial STS Transfer Scapa Flow – 8-9 February 2007

48 48 LNG STS Transfer Site Specific Assessments Simulator training with Scapa Flow Pilots and EBRV senior staff at South Shields Technical College (UK) Ballast Water Management issues regarding environmental preservation Waterway management risk assesment with Orkney Harbor Authority, Scotish National Heritage and BMT-Isis Simulator training with Bahia Blanca Pilots and EBRV senior staff at SiPort Risk assessment of non-standard conditions prior to STS operation Primarily for weather considerations and forecasted conditions

49 49 LNG STS Transfer Full Rate Cargo Transfer (5,950 m 3 /hr)

50 50 LNG STS Transfer Routine Inspections

51 51 LNG STS Transfer Drain & Purge Hoses

52 52 LNG STS Transfer CTMS EXCALIBUREXCELSIOR Opening Volume (m3) 132,3791,197 Volume Transferred (m3) 132,296131,830 Closing Volume (m3) 83133,027 BOG Consumed (m3)

53 53 LNG STS Transfer Statistics

54 54 LNG STS Transfer


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