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Friction Pads - Fourteen (14) friction pad assemblies are
arranged to receive and distribute the horizontal component of the
mooring force. They are disposed in two groups - eight (8) towards
the bow and six (6) aft of the turret. Each pad is composed of a
self-lubricating bearing surface which mates with nickel steel
corrosion resistant overlay counterface. The pads are arranged as
individual rams. which are supported by an hemispheric
elastomeric bearing which reacts back into the vessel keel via a
box structure.
Turret Moonpool Structure
The turret moonpool structure is a cylindrical bulkhead
inserted through the hull from the FPSO main deck down to just
below the keel. It is made of stiffened plate framed back into the
vessel sections by radial stiffeners. At its lower end, the cylindrical
bulkhead is equipped with inflatable seals, which can be
pressurised against a support surface attached to the chain-table
below. Once temporarily sealed, the water inside the turret annulus
can be pumped out allowing dry inspection of the friction pad
assemblies.
Deck Turret Structure
The turret extends between the top of the turret cylinder
and the swivel stack, and includes two main areas:
1. The turret main deck and manifold area
2. The swivel deck
Turret Main Deck
This deck is supported by the turret cylinder and functions
as a non-rotating base for the incoming fluid transfer system. This
deck is fabricated in welded steel plate and beams, and has a
circular plan form.
The deck is surrounded by a gutter to stop any waste
products from leaking onto the FPSO deck. A drainage system, for
piping and possible spills is integrated into the slops system.
The deck supports the manifold structure: which is hung off
below, and the swivel deck. The manifold area serves as an access
to crude oil production lines before their entry to the swivel stack.
Swivel Deck - this deck is located above the turret main
deck and supports the swivel stack. A central opening is provided
for the passage of the swivel entry piping and cabling.
Overhead Gantry Structure
The overhead gantry structure is mounted on the FPSO
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