Page 108 - 4274
P. 108
process platform
swivel on turret
manually operated water jets and foam applicators
The capacity of the main fire water pump is estimated for
the worst event, i.e. a cargo fire, requiring simultaneous operation
of the following.
foam system
process deluge system
turret deluge system
two water jets
Fuel Oil System
A diesel oil system serves the various machinery on the
vessel, comprising the following main components:
Fuel oil storage tanks
Piping from the filling station on the main deck to the
storage tanks
One settling tank with a capacity of approx. 40 m3
Two fuel oil transfer pumps (one as standby)
One fuel oil purifier
One pre-heater
7.4.6.6 Offloading
Cargo offloading can be arranged through several means,
either direct transfer. i.e. FPSO to shuttle tanker through:
Offloading reel
Trailing hose
Loading buoy
or indirectly through a permanently moored attending FSO.
A typical stern mounted offloading reel system is shown
(fig. 4.9). The reel typically stores approximately 110 meters of 16
inch diameter bore flexible offloading hose string. The reel stores
the hose between offloadings. Transfer rates are approximately
3
4000 m /hour (600,000 bbls in 24 hours) from the FPSO to a
shuttle tanker moored approximately 80 meters astern.
The offloading reel is driven by multiple hydraulic motors
which allows for satisfactory operation of the system even with
one motor out of action.
Connection between the vessels is made without the need
to transfer personnel or use of a support vessel.
This can be achieved via two methods, either by firing a
line to the shuttle tanker and transferring the messenger line, chafe
108