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Feature 2
a turret mooring arrangement, and the
gas send-out line 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.
Berthing, loading and unberthing will
take approximately 24 hours.
The terminal will allow safe berthing
of standard LNG carriers, which will
need no modification. Assuming that the
Artist’s impression of Golar Spirit FSRU.
terminal is being serviced by LNG carriers
of size 125,000m
3
to 137,000m
3
, the arrival
schedule will be about every nine days.
Also known is the fact that the Golar
Spirit FSRU will be provided with standard
loading arms to allow side-by-side transfer
of LNG and vapour return. She will be
equipped with three 16 inch loading arms;
two for LNG and one for vapour return.
Operation with two LNG arms will ensure
a loading time of 16 hours. The loading
arms will be quite similar to the type used
on onshore terminals, but modified to
take account of relative motions between
carrier and FSRU.
According to a general description
provided by Golar, the Golar Spirit
FSRU will also be fitted with equipment
for guiding the arms onto the carrier’s
connection flanges. This pre-coupling
guide operation will be necessary to
compensate for relative motion during Golar Winter - to be converted into an FSRU for Petrobras charter.
coupling when the relative motion exceeds
+/- 0.5m.
As far as regasification is concerned, tender for a third FSRU in which Golar will to a floating terminal by installing
LNG will be sent from the tanks to the bid. regasification equipment onboard the
regasification skid situated forward. The ‘We have [also] been working on an vessel and permanently mooring her off
regasification skid essentially comprises Offshore Regasification project near the coast of Italy.
booster pumps and steam heated Livorno, Italy. A government decree ‘Golar continues to field enquiries from
vapourisers. The booster pumps will approving the project was issued on 23 a growing pool of counterparties interested
increase the pressure to about 90bar, before February 2006 and in November 2006 we to progress FSRU projects. Detailed
the high pressure LNG is vapourised, after acquired a share in the project development assessment of identified conversion
which the gas passes through a fiscal company which currently stands at 16.38%. opportunities for both Golar Freeze
metering unit and is sent to the subsea The Livorno project has now reached a and Khannur are now well advanced.
pipeline via the gas swivel and flexible critical stage as the project contemplates Additionally, Granatina (purchased from
risers. Maximum boil-off from the storage FID [final investment decision]. Final EPC Shell on 14 January 2008), being a sister
tanks is 0.25%, as per original design [engineering procurement and contracting] ship to Golar Winter, is well placed to
requirements off the existing LNG carrier. costs have now been submitted to the secure FSRU employment opportunities.
The boil-off gas is collected and used as fuel project development company and the Most of these projects could utilise the
for steam generation in the FSRU boilers. process of evaluation is drawing to a close. company’s older vessels currently on
‘The full suite of agreements associated In December 2007 the project development charter to BG and which are likely to
with the employment by Petrobras of Golar company committed to purchase Golar be redelivered by BG at the end of each
Winter and Golar Spirit as FSRUs have now Frost for conversion into the floating charter’s initial term during the period
been finalised and executed,’ Mr McDonald terminal (vessel delivery to the project in from 2008 to 2011, which fits well with the
said. ‘Petrobras has recently announced a June 2008). Golar Frost will be converted anticipated project portfolio.’ NA
The Naval Architect February 2008 55
NA Feb 08 - p54+55.indd 55 05/02/2008 09:41:16
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