Compatibility Study of FSRU Exemplar for STS Transfer with LNGC

Compatibility Study of FSRU Exemplar for STS Transfer with LNGC

• 1.
  STUDY WAS PREPAREDFOR PRE-FEED STUDY OF WEST JAVA FSRU JAKARTA, 11 MARCH 2011 Assessment & Compatibility Study of FSRU Exemplar for an STS LNG Transfer with LNGC Population in Market
• 2.
  Objectives “…to build upconfidence level to go with option STS” “…to set up design parameters for further engineering process”
• 3.
  Compatibility of themanifold arrangements between 2 vessels i.e. exact location, spacing, height above waterline Design mooring arrangement, i.e. length overlap, length off set between 2 vessels Design parameter for Cryogenic Transfer hoses, Yokohama fenders, etc Issues involved
• 4.
  Codes & Guidance's Recommendationsfor Manifolds for Refrigerated Liquefied Natural Gas Carriers (LNG) Mooring Equipment Guidelines ICS, STS Transfer Guide (Liquefied Gases) International Safety Guide for Oil Tankers & Terminals STS LNG Transfer Guidelines
• 5.
  Four (4) differentmethods of STS LNG transfer 1. Double-banked adrift 2. Double-banked at anchor 3. Double-banked moored at a Gasport jetty 4. Double-banked moored to a Gateway STL buoy Relatively less complexity compare to No. 1 & 2
• 6.
  Description Unit Dimension Capacitym3 150,900 Length overall (LoA) m 291.0 Length between perpendicular (LBp) m 280.0 Breadth (B) m 43.4 Designed draft m 11.6 Summer draft m 12.4 Summer deadweight MT 83,125.0 Lightweight MT 34,227.3 Moulded displacement MT 117,352.3 Lightweight draft m 9.4 Membrane Type – GT No.96 , Cat. B Vessel (FSRU) Referral Design – Exemplar OCIMF Recommendation
• 7.
  Vessel (FSRU) ReferralDesign – Exemplar SCM BCM 144.6 m146.4 m Right about amidships area
• 8.
  Vessel (FSRU) ReferralDesign – Exemplar MHW 21.4 m Ballast What would be the designed arm length? What would be the min diameter of Yoko fender applied?
• 9.
  Data Ranges &Observation  Total 343 LNGC vessels data available for observation, updated by end of 2010  Range LNGC Capacity from 1,517 Cbm up to 266,000 Cbm  Vessels delivered in 1969 up to vessels delivered in 2010  85% range data are intact, remaining are less intact  Covering all types of containment systems  Covering all Size Categories
• 10.
  Population of LNGCFleet The area of concerns would be in the population of LNGC with Spherical type  Almost all of Membrane type LNGC, manifolds were located at amidships area
• 11.
  Population of LNGCFleet The area of concerns would be in the population of LNGC Cat. C, as probably giving more Length off-set  Abt. 20 Pct of LNGC Cat. C operated in the market now are ageing  Cat. B sizes are the common market size
• 12.
  Membrane type isdominating most of the LNGC operating in market nowadays (within productive ages), new vessels and new buildings are tends to build using this type of containment. Population of LNGC Fleet
• 13.
  Population of LNGCFleet Even within the group of Moss type LNGC, the no of vessels with size of Cat. B (same category as FSRU) are dominating – similar sizing group will most likely compatible in dimension
• 14.
  Data observations An Over-lapconfiguration Where The bow of FSRU 32.3 m away overlapping LNGC bow line (X)
• 15.
  An Off-set configuration WhereThe bow of LNGC 25.76 m away overlapping FSRU bow line, for data observation purposes , value marked as minus (-) (X) Data observations
• 16.
  WL MHW Lad MHW Ball (Y) (Y)is a gap (clearance) of heights between FSRU’s manifold from waterline at empty ballast and LNGC’s manifold from waterline at Laden condition, this called as the extreme condition Data observations
• 17.
  Findings & Conclusions •The maximum deviation in length (X) is 68 m Overlap and (–) 26 m Offsets • The maximum gap out of the extreme condition is 1.8 m up to 17.75 m • Only less than 5%, LNGC manifolds arrangement are designed not in accordance to OCIMF recommendation, it does means that the spacing gap between lines are likely not match with Exemplar’s • Three (3) no of data's were put a side due to too small (out of range) i.e. Kayoh Maru, Shinju Maru, Pioneer Knutsen. • Market domination is Membrane type LNG at Cat. B size.
• 18.
  Executive Summaries 1. Confidentthat STS LNG Transfer of Exemplar for West Java FSRU is a workable alternatives 2. Exemplar FSRU is likely compatible to most LNGC vessels in the market at 85% confidence level. 3. Set-up design parameters for Jetty structures & Berthing facility i.e. a) Length offset / overlap in the range of (+/-) 26 m (beyond FSRU length) b) Maximum gap (height clearance) is 17.75 m 4. Exemplar specification is a market common size & types. 5. A further risk assessment and vessel compatibility study still need to be done on a case by case basis on each and every STS individual planning
• 19.
  Bibliography • Drewry, AnnualLNG Market Report 2006 • BQ Market Search LNG, 2007 • Clarkson – Wikipedia, LNGC – March 2010 • Intertanko Q88, Heidenreich – End of 2010 • Lloyds Reg Fairplay, IHS 2010