FPSO Excursion Monitoring System (EMS)
The Excursion Monitoring System is currently deployed in the North Sea and in the Western Australia part of the Indian Ocean.
Excurion Monitoring System Features
- Embedded Database
- NMEA 0183
- High Speed
- Small Resource Footprint
- Modular
- Scaleable
- Distributed Network
- Multi-platform
- Robust/Reliable
- Customisable
- Low System Management
- Runs on Industry Standard Hardware
What is Excursion Monitoring System?
The Excursion Monitoring System monitors the position of a Floating Production Storage and Offloading (FPSO) vessel using a combination of Dynamic Global Positioning System (DGPS) and vessel heading information. The system displays the position and orientation of the vessel relative to an excursion envelope and uses a snail trail to show the history of past movements.
If the system sees the vessel move out of the excursion envelope an alarm will sound indicating possible failure of the anchor mooring system. The system maintains a history of position and heading data at one minute intervals for up to five years. An alarm and event log is also kept.
EMS System Components
The following main elements make up the system:
- Industrial Personal Computer System
- GPS Compass
- DGPS Receiver
- Excursion Monoitoring/Reporting Software Package
EMS System Operation
The Excursion Monitoring System is setup so that the GPS Compass provides vessel heading data and the DGPS Receiver provides position data. The system is usually set-up with two channels of heading and position data. Excursions reported by one channel can be confirmed by consulting the other channel.
The raw GPS data is checked on input to determine its quality and reliability. The system will always compute the vessel position (given sufficient input data) but only good quality data will be considered when determining if an excursion alarm event should be raised. The snail trail displays provide options to view only the good position data or all the data regardless of quality.
The system can also interfaced to the vessel's Deck Motion Monitoring Systems and Weather Systems. Data from these systems are available in the system's live and historic databases. Typically the Deck Motion Monitoring System provides vessel roll, pitch, and heave while the Weather Data System provides air pressures, air temperatures, and wind speeds.
Snail Trail Display
The Snail Trail of the Excursion Monitoring System has two types of display:- Live Snail Trail
- Historic Snail Trail
The Live Snail Trail maintains its own log of position data; it keeps the last 2 hours worth of data at 5 second intervals. It shows the outline of the vessel and the position of the turret mooring centre. The track of the recent vessel movements is shown in figure below as a snail trail line in blue.
The Historic Snail Trail provides access to the long term historic vessel position data which is logged in the historic database. The historic database logs the vessel position data every minute and has enough capacity to store data for up to 5 years. After 5 years the oldest data will be lost.
Navigation
The Excursion Monitoring System provides optional navigational features to assit in hook-up of the FPSO to the mooring centre and other close-up operations. The Navigation display provides standard marine navigational features.
Client List
Our FPSO Excursion Monitoring System is currently used by :
More Information
For more information please contact RUP Limited.