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The SBM Group pioneered the concept
of disconnectable turret mooring systems.
This allows the exploitation of reserves
in locations where severe weather conditions
such as typhoons, hurricanes or ice
packs, might threaten the safe operation
of the facility.
Two basic concepts were developed:
- The RTM Mooring System
The RTM system comprises a tanker or
barge bow mounted riser turret, incorporating
a rapid and independent disconnectable
Riser Turret Mooring. The disconnection
is achieved automatically in two stages;
first the risers are isolated, then
the riser column disengaged utilising
large hydraulically operated collet-type
connectors. After disconnection, the
column remains on location and the tanker
sails away.
- The BTM Mooring System
The BTM system comprises an internal
turret integrated into the forward end
of a tanker or barge. The mooring buoy
is connected to the turret structure
by a large collet-type connector. The
buoy is designed to have enough buoyancy
to support the weight of the chain legs
and risers. To reconnect, the mooring
buoy is simply pulled up under the tanker
using a wire rope hauled in on a drum
winch.
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