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									     Adriatic Terminal




26 RasGas MAGAZINE
                                                    Adriatic Terminal




Adriatic Terminal:
an offshore first for Qatar and Europe

               The new offshore regasification terminal at Porto
        Levante in Italy is a unique technical achievement. It also
         opens up new strategic and commercial possibilities for
                             Qatar and for the Italian energy sector




                                                          RasGas MAGAZINE 27
     Adriatic Terminal



                                                                                                            a new supply route from Qatar, a strategic
                                                                                                            country which has not been linked to Italy up
                                                                                                            to now. This new infrastructure and gas source
                                                                                                            contribute to improved energy security for Italy.
                                                                                                            For Edison, this provides a more geographically
                                                                                                            diversified gas portfolio and continues progress
                                                                                                            toward our target of becoming fully independent
                                                                                                            in gas supply.”
                                                                                                               Terminale GNL Adriatico, to use the terminal’s
                                                                                                            Italian name, is owned by Qatar Terminal Limited
                                                                                                            (45 per cent), a subsidiary of Qatar Petroleum,
                                                                                                            ExxonMobil Italiana Gas (45 per cent) and Edison
                                                                                                            (10 per cent). To support its 25-year supply
                                                                                                            agreement with RasGas, Edison has contracted
                                                                                                            80 per cent of the terminal’s capacity to regasify
                                                                                                            LNG imported from Qatar. The remaining 20 per
                                                                                                            cent is available for third-party LNG sales.

                                                                                                            A new blueprint for LNG transmission
                                                                                                            The uniqueness of the Adriatic Terminal lies
                                                                                                            in its being the world’s first application of
                                                                                                            a 'gravity-based structure' for this purpose.
                                                                                                            While storing and regasifying LNG are not new
                                                                                                            techniques, the challenge of creating an offshore
                                                                                                            installation to house storage and regasification
                                                                                                            facilities – together with a power generation
                                                                                                            plant, a mooring and unloading berth, and
                                                                                                            accommodation for operations staff – called

   “The terminal                                       In the northern Adriatic sea, 15 kilometres
                                                       off the Italian coast at Porto Levante, is an
                                                                                                            for engineering ingenuity of a high order.
                                                                                                               At the heart of the designers’ solution was
   is a milestone                                      astonishing feat of engineering and a first for
                                                       the global liquefied natural gas (LNG) industry:
                                                                                                            an enormous reinforced concrete box, the
                                                                                                            gravity-based structure, that rests on the sea
   in our country’s                                    the new Adriatic LNG Terminal. Already, on
                                                       10 August, the terminal received its first cargo,
                                                                                                            floor in 29 metres of water. Inside are two
                                                                                                            LNG storage tanks, each with a capacity of
   energy history”                                     52,000 tonnes of Qatari LNG, and when it             125,000m3, and on top are the regasification
                                                       reaches full operational capacity later this         plant’s cryogenic pumps, compressors, LNG
                                                       year, the terminal will be able to regasify          vaporisers and auxiliary facilities such as the gas
                                                       775 million cubic feet of natural gas per day,       turbine-driven power generation unit. The design
                                                       or approximately 8 billion cubic metres per          of the two steel-nickel storage tanks (the 9 per
                                                       year – 10 per cent of Italy’s natural                cent nickel content optimises cold temperature
                                                       gas consumption.                                     performance) incorporates modular technology
                                                          “The Adriatic LNG terminal is a milestone in      from ExxonMobil.
                                                       our country’s energy history,” said Umberto             Overall, the facility is 375 metres long by 115
                                                       Quadrino, CEO of Edison. “The terminal opens         metres wide. The main deck is 18 metres above



    Timeline




   June 2005                              March 2007                              February 2008                          May 2008
   Construction of the gravity-based      LNG storage tanks are installed         Pipeline construction is under way     Mooring ‘dolphins’ under
   structure begins at Algeciras, Spain   in the gravity-based structure          at Polesine, Italy                     construction in Venice, Italy
                                          at Algeciras



28 RasGas MAGAZINE
                                                                                                                              Adriatic Terminal



sea level and the top of the flare tower is 87
metres above sea level, .
   Gas from the terminal reaches Italy’s national
gas distribution network through a new 30-inch
pipeline, built by Snamprogetti. The pipeline
carries gas 15km from the terminal to the shore,
then another 25km onshore to the metering
station near Cavarzere. A 36-inch pipeline
transports gas the next 84km from Cavarzere
to feed into the national network near Minerbio.
   As well as being the first offshore
regasification terminal of its type in the
world, the Adriatic Terminal is notable for
its environmental credentials. Construction
work was scheduled to respect the migration
patterns of birds, for example. An energy
recovery system enables the terminal to use
heat naturally stored in the sea or captured
from turbine exhausts to regasify LNG, and the
gas turbines themselves are among the most
modern in the world, with effective emissions
control systems. Off the terminal, meanwhile,
pipeline construction used techniques such as
horizontal directional drilling, which minimises
disturbances to the seabed, artificial reefs are
being installed to promote the development
of marine life, and an extensive environmental
monitoring programme is in place.
                                                     September 2008 it made a dramatic 17-day,          Opposite page: the gravity-based structure en route
International collaboration                          1,700-mile journey, towed by four tugs, past       for the Adriatic. Above: the unloading of the first cargo.
                                                                                                        Below: the terminal in the flooded dry dock in Spain
Designing, building and commissioning the            Gibraltar and through the Mediterranean to
Adriatic Terminal was an international project       its final location. Since then ballast has been
involving specialist companies around the            added, the mooring ‘dolphins’ have been
world. The primary contractor was Aker               installed and the terminal has been hooked
Kvaerner, now renamed Aker Solutions, an             up to the import pipeline. With the arrival in
international engineering and construction           August of the first cargo from RasGas, the
corporation based in Norway. The gravity-            first phase of the terminal's life was complete.
based structure and process modules for the             The inauguration of the terminal took place
terminal were built in Spain at Algeciras and        in October 2009 in Venice and at sea. As
Cadiz respectively, and the LNG tanks were           the Adriatic Terminal nears fully operational
made in South Korea. Other work was carried          status, it is clear that Qatar has successfully
out in Singapore, Sweden and Italy.                  created a new connection with Europe.
   When the gravity-based structure was
complete and the two LNG tanks installed, in         www.adriaticlng.it




August 2008                            September 2008                          October 2008                             August 2009
With construction complete, the        The terminal arrives – work begins      The mooring dolphins are towed           The first cargo of Qatari LNG
terminal is prepared for transfer to   on installing it and connecting it to   from Venice and positioned               is unloaded
Italy, towed by four tugboats          the Italian gas distribution network    adjacent to the terminal



                                                                                                                                            RasGas MAGAZINE 29

								
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