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Tema LNG FSRU -27-4-2012

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Tema LNG FSRU -27-4-2012 Powered By Docstoc
					TEMA LNG-FSRU PROJECT
	
  Why	
  Ghana	
  needs	
  Gas(LNG)	
  


  Demand for Gas in Ghana

 The demand for Gas in Ghana has been driven by the needs of Power Generation
 Companies which culminated in the construction of the West Africa Gas Pipeline.
 The discovery of Gas in the Jubilee Fields was expected to plug the national
 supply deficit hole.
 The contrary has been true as the country’s demand in the next decade will far out
 strip supply from both the West Africa Gas Pipe Line and Jubilee Fields at full
 production

 Table 1 below shows national demand of Gas for power generation and table 2 shows
 Industrial demand.
Gas(LNG)	
  Demand	
  –	
  Power	
  Plants	
  	
  

                                                                Owner	
     Gas	
  Quan/ty	
  	
  
     Plant	
  	
                                                             MMscf/d	
  
     Plants	
  Ready	
  for	
  Gas	
  
     Takoradi	
  Thermal	
  Power	
  Plant	
  (TAPCO)	
  	
      VRA	
              60	
  

     Takoradi	
  InternaConal	
  Power	
  Company	
  (TICO/      VRA	
              60	
  
     TAQA)	
  

     Mines	
  Reserve	
  Plant	
  (MRP)	
  	
                    VRA	
              30	
  
     Tema	
  Thermal	
  1	
  Power	
  Plant	
  (TT1PP)	
         VRA	
              30	
  
     Sunon	
  Asogli	
  Power	
  Plant	
  (SAPL)	
                IPP	
             35	
  

     Tema	
  Thermal	
  2	
  Power	
  Plant	
  (TT2PP)	
         VRA	
              15	
  


       Total	
  Gas	
  Required	
  Immediately	
                                  230	
  

        Table 1 Source VRA
	
  Gas(LNG)	
  Demand	
  –	
  Power	
  Plants	
  	
  	
  
                                                                 Owner	
               Gas	
  Quan/ty	
  	
  
  Plant	
  	
                                                                           MMscf/d	
  

  Plants	
  Under	
  Construc4on	
  

  Tema	
  Osono	
  Power	
  Ltd	
  (TOPL)	
                      IPP/VRA	
                     30	
  
  Magellan	
  Plant	
  (T3)	
  -­‐	
  Takoradi	
                   VRA	
                       30	
  

  Osagyefo	
  Power	
  Barge	
                                     GoG	
                       24	
  
  Total	
  Gas	
  for	
  Plants	
  under	
  Construc4on	
                                     84	
  
  Plants	
  Wai4ng	
  to	
  be	
  Constructed	
  

                                                                 VRA/JV	
                      60	
  
   VRA_Alstom	
  (Domini)	
  
                                                                    IPP	
                      60	
  
   Cen	
  Power	
  Plant	
  
                                                                    IPP	
                      90	
  
   Kumasi	
  Power	
  Plant	
  
  Total	
  Gas	
  for	
  Plants	
  to	
  be	
  Constructed	
      Table 1 Source VRA         210	
  
    GAS DEMAND FOR NON-POWER COMPANIES
COMPANIES	
                                     MMscf/d	
  
VALCO	
                                           0.705	
      COMPANIES	
                   MMscf/d	
  
Aluworks	
  Gh.	
  Ltd	
                          0.621	
  
                                                               Takoradi	
  Industrial	
           15.0	
  
Unilever	
                                        0.931	
  
                                                               Tarkwa,	
  Manganese	
              9.0	
  
P	
  Z	
  Cussons,	
  Ghana	
  Ltd	
              0.152	
  
Barry	
  Callebaut	
                              0.062	
      Nyinahin,	
  Bauxite	
             46.0	
  
Cocoa	
  Processing	
                             0.307	
      Buipe,	
  Limestone	
              16.0	
  
GTP	
  Co.	
                                      0.641	
      Other	
  Major	
  CiCes	
          12.0	
  
Pioneer	
  Foods	
                                0.310	
  
                                                               TOTAL	
                            98.0	
  
Nestle,	
  Ghana	
  Ltd	
                         0.455	
  
Western	
  Steel	
  and	
  Forging	
  Ltd	
       0.513	
  
Tema	
  Steel	
  Co	
                             0.402	
  
Ghana	
  Paper	
  PrinCng	
  &	
  Pkg	
           0.059	
  
Super	
  Paper	
  Products	
                      0.083	
  
WAHOME	
                                          0.447	
  
Tema	
  TexCles	
                                 0.485	
  
Gafco	
                                           0.421	
  
Others/GTMC	
                                     0.462	
  
Accra	
  Area	
                                   0.863	
  
TOTAL	
                                            7.980	
  
            Table 2 Source VRA
The	
  Project	
  	
  

The Project involves the deployment of a Floating Storage Regasification Unit
( FSRU) off the Port of Tema to supply LNG to feed power plants and industry
in the Tema Area

The project is being undertaken by a diverse and experienced group including:


§    HML Marine Power & Energy Ltd
§    GOLAR
§    LEIGHTON
§    BLUEWATER
WHY	
  FSRU?	
  

Key Benefits of an FSRU

§  FSRU is a more cost-effective way to meet low demand or to “grow into”
    LNG than traditional land based terminals

§  Flexible location selection

§  Can be relocated

§  Quicker to develop than land-based facilities

§  Cost competitive with land-based facilities

§  Suitable for location offshore

§  Improved navigational safety as LNG carriers stay offshore

§  Side-by-side offloading
How	
  FSRU	
  WORKS	
  

 Floating Storage and Regasification Unit (FSRU) is based on conversion of an existing
 LNG carrier. The FSRU is to be permanently moored offshore and export gas to shore
 through a sub sea pipeline.

 The vessel is permanently moored to the seabed with a turret mooring arrangement, and
 the gas send-out line is arranged through the turret down to the seabed and to shore via
 a seabed pipeline. The LNG tankers offloading to the floating terminal will be moored in a
 side-by side configuration.

 LNG is sent from the tanks to the regasification skid situated forward. The regasification
 skid essentially comprises booster pumps and steam heated vaporizers. The booster
 pumps will increase the pressure to about 90 bar, before the high pressure LNG is
 vaporized, after which the gas passes through a fiscal metering unit and is sent to the
 sub sea pipeline via the gas swivel and flexible risers. 	
  
How	
  FSRU	
  WORKS	
  
An	
  Example	
  of	
  the	
  RegasificaCon	
  Process	
  
Vessel	
  




§    Name:	
  Hoegh	
  Gandria	
  
§    Built:	
  1977	
  
§    Cargo	
  Capacity:	
  127,	
  104	
  m3	
  
§    Mooring	
  LocaCon:	
  Offshore	
  
§    LNG	
  Transfer:	
  Side	
  by	
  Side	
  
§    Mooring:	
  Internal	
  Turret	
  
§    Status:	
  Pending	
  Conversion	
  	
  
MOORING-­‐	
  Turret Mooring Systems 	
  



Internal Turrets




                                              Source: Bluewater




                          Source: Golar LNG
MOORING-­‐	
  Turret Mooring Systems 	
  


Internal Turrets

The internal turret mooring system is Bluewater’s
most frequently supplied turret mooring system. It
can be used in medium and deep water
applications. This type of mooring system is
widely used on FPSOs, FSOs and FSRUs. Its
design has been proven time and time again in
the harshest North Sea conditions.




                                                     Source: Bluewater
MOORING-­‐Internal Turrets

Principal components:
§  Turret and spider
§  Anchor arrangement
§  Product transfer system
§  Turret casing
§  Turntable

Turret and Turret Casing
The mooring system consists of a (geo)static
part, connected to the seabed, called the
“turret” and a rotating part, integrated within the
FSRU hull, called the “turret casing”.

These two parts are connected via a bearing
arrangement. This bearing arrangement allows
the rotating and geostatic part of the system to
rotate, thus allowing the FSRU to freely
weathervane around the turret to a stable
position such that the loads on the FSRU are          Source: Bluewater

minimal.
MOORING-­‐Internal Turrets	
  


Anchor Arrangement.

An anchor arrangement is applied to connect the FSRU to the seabed.
Dynamic behaviour calculations are made for each internal turret mooring
system to predict the behaviour of the FSRU for various wind, wave, and
current conditions. These calculations determine the optimal anchor leg
arrangement, and the size of the various anchor leg components.
Soil data at the site location will be examined, by Bluewater Geotechnical
Engineers to determine type and size of anchors.

Basic anchor leg components are:
Anchors or piles, depending on the soil data, to connect the anchor legs to
the seabed
Anchor line (chain, steel wire, polyester rope or combination of these)
Chain stoppers to connect the chain to the spider
MOORING-­‐Internal Turrets	
  

Product Transfer System

The heart of each turret mooring system is the product transfer system.
From or to a geostatic location, e.g. a Pipe Line End Manifold (PLEM), riser
base which is fixed to the seabed, this system transfers product to the
FSRU, weather vanning around the turret.

The basic product transfer system components are:
Flexible subsea hoses, generally referred to as “Risers”
Swivel stack
On board process piping

Risers
The risers connect the subsea piping to the FSRU. These risers are
flexible hoses coming from the seabed or from a nearby loading tanker.
The configuration of these risers can vary, depending on water-depth, sea
state, FSRU motions, etc.
MOORING-­‐Internal Turrets	
  

Bluewater Engineers thoroughly determine FSRU motions caused by
weather conditions, sea state and water depth in computer models in order
to predict the dynamic behaviour of the risers and determine the optimal
riser configuration.

The design of the turret mooring system allows for the connection of over
50 risers and associated umbilicals, providing paths for gas and water as
well as the associated paths for hydraulics, chemical injection, power,
control and optical signals.

Swivel Stack
Since turret-mooring systems usually accommodate a large number of
paths, these systems are equipped with a swivel stack rather than a single
product swivel. This swivel stack is the connection between the geostatic
risers and the FSRUs piping and is located above the turntable.
LNG	
  Transfer/Loading	
  	
  


Side by Side Loading




                                  Source: Bluewater




              Source: Bluewater
LocaCon	
  Map	
  -­‐Landfall	
  
LocaCon	
  Map	
  –Mooring	
  &	
  Transfer	
  
LocaCon	
  Map	
  –Mooring	
  &	
  Transfer	
  
Partners	
  	
  

Vessel Owners

GOLAR LNG & Bluewater
Golar is one of the world’s largest independent owners of LNG carriers.
www.golarlng.com

LNG Supplier

Sonangol Gas will supply the LNG to the FSRU

Financial & Transaction Advisors

INVESTEC
www.investec.com
Partners	
  	
  

Mooring and O&M

BLUEWATER

Bluewater is a leading technological company specializing in the design
development lease and operation of Tanker Based Storage Systems and a
leading provider of Mooring Technology.

Bluewater will be responsible for the mooring, operation and management
of the FSRU
www.bluewater.com

Project Developer
HML Marine Energy & Power Ltd
HML is a consultancy company providing a one stop solution to the oil gas
and power sectors in West Africa
www.hmlmpe.com
Bluewater	
  -­‐	
  ExperCse	
  	
  
Bluewater have been designing, installing and operating Turret Mooring Systems
since 1993. Many of the world’s leading Operators employ Bluewater’s turret and
swivel technology in their assets around the world, including the North Sea, Far
East, South Africa and Brazil. Applications and operating challenges are broad
and diverse, with water depths ranging from 70m to over 1000m and tankers from
26,000 to 280,000 (DWT).

While each of Bluewater’s turret systems is individually adapted and tailored to
specific project requirements. All Bluewater Turret Mooring systems incorporate
innovative design, investment in research, development and years of operational
feedback resulting in:

§     Low maintenance and high reliability
§     Safety and integrity of a passive design
§     Ease of accessibility
§     Designs that minimize loss of storage capacity but retain riser capacity
§     Structural designs focused on reduced fatigue and wear
§     Continuous improvement through the operational feedback and lessons
      learned from Bluewater operated FPSO turrets
Examples	
  of	
  Vessels	
  using	
  the	
  Bluewater	
  Internal	
  	
  
Mooring	
  System.	
  	
  




                 Source: Bluewater
Contact	
  Details.	
  	
  



  HML Marine Energy & Power Ltd	
  
  	
  
  5	
  Clokey	
  Walk,	
  North	
  Labone	
  -­‐	
  Accra.	
  	
  
  P.O.Box	
  SR67,	
  Spintex	
  Road,	
  Ghana.	
  
  	
  
  Email:info@hmlmpe.com	
  
  Phone:(+233)	
  26	
  5767	
  820	
  
  hkp://www.hmlmpe.com/	
  
Appendix.	
  	
  

				
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