Single Point Mooring Systems-large

Single Point Mooring Systems

24 Feb 2012 By. MA

Content 1. SPM Technical Description

2. Lesson Learnt

SPM Definition Single Point Mooring (SPM )is used for loading\unloading of tankers, providing a weathervane mooring in open sea conditions

Mooring Loading SPM

Why SPM?

Jetty SPM

Shore Terminal

Pipeline

Tanker

SPM Components Tanker Buoy

Mooring Hawser

Catenary Anchor Leg Mooring (CALM) Buoy

Under Buoy Hoses PLEM (Pipeline End Manifold)

Floating Hoses Mooring Chains

Pipeline

Buoy Components Central Pipe Unit Valves Buoy Piping

Platform

Hose

Central Piping Unit (CPU)

Under Buoy Hose Connection

Above Water Components-1

Mooring Hawsers

Floating Hoses

Rotation vs Fixed Parts Rotating

Fixed

CALM Buoy Types Turret Buoy: buoy with a geostatic turret and a buoy body, which is rotating around the turret.

Turntable Buoy: buoy with a geostatic fixed buoy body (moored to the seabed) and a rotating mooring table (Conventional Design)

Bearings Central Piping Unit (CPU)

Electrical Swivel

Rotating

Main Bearing

Fixed

Swivel Bearing

Turret Buoy-Rectangular Central Piping Unit Rotating

Surge Tank

Fixed

Turntable Buoy 12m

Hose Connection

6m

Turret Buoy

Moored Tanker

Mooring Hawser

Mooring Hawser

Floating Hose and Under Buoy Hose Oil Companies International Marine Forum (OCIMF)

Under Buoy Strings Floating Hose Strings

Floating Hose Strings (Example) MBC

Floating Hose and Marine Break-away Coupling (MBC) MBC

Tanker Manifold Connection

Under Buoy Hose Strings (Example) Water Depth

Buoy

15m

32m

Floats

PLEM (Pipeline End Manifold)

PLEM (Pipeline End Manifold) PLEM Barrel

Valve (Under Buoy Hose)

Plan View

PLEM – Elevation View Hose Connection Piled Foundation

Hydraulically Operated valve

Elevation View

PLEM Valves

PLEM

Buoy Anchoring Assembly Seabed Anchor

Anchor Chains

High Holding Power (Fluke Anchor)

SPM Project Requirements • • • • • • •

Certification and Design Codes Navigation Depth and Dredging Survey (Bathymetirc, Geotechnic, Metocean, UXO) Pipeline Connection Flow Assurance Control \SCADA Operation\Support Vessels\Spill Clean-up

Certification and Design Codes • • • •

Det Norske Veritas (DNV) Bureau Veritas (BV) American Bureau of Shipping (ABS) Lloyds Register of Shipping.

Navigation Depth and Dredging

Survey (Bathymetirc, Geotechnic, Metocean, UXO)

PLEM-Pipeline Spoolpiece

Flow Assurance