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8706 lng-brochure


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liquefied gas

liquefied gas

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  • 1. A new dimension in LNG vessel automationKongsberg is a leading supplier of complex Integrated Automation Systems (IAS) for highlyadvanced special vessels worldwide. Applications covered by the technology include fieldexploration and drilling, oil and gas processing (FPSOs and fixed installations), shuttle tankersand LNG carriers.Close co-operation with ship owners, yards and other main suppliers during vessel design andcommissioning ensures an integrated solution, which makes the complete system moreefficient in both economical and technical aspects. Both end user and yard will benefit fromthe advantage of one supplier taking complete responsibility for the integration of the system.The design criteria for Kongsberg’s Integrated Automation System is reliability and safety,characteristised by:• Segregation – autonomous process areas have dedicated process controllers with distributed I/O units• Redundancy within data communication network and process controllers• Simplicity – small range of components to facilitate modularization• Fault tolerant design, based on fail-safe principles 1
  • 2. Integrated solution - The Full Picture By integrating the different functions into the IAS, the overall need for hardware and software functions and interfacing requirements is reduced, which leads to less demand for special software, cabling and testing. Furthermore, integrated systems offer a far greater degree of redundancy and therefore increased system availability and operation performance. Ex Net Custody Transfer System Tunnel Thruster Redundant Ex Net The modern Integrated Automation System is a distributed monitoring and control system covering all important functions on board, such as control and monitoring of: Data Net Engine Cargo • Power management • Loading / offloading RIO 400 Ex • Auxiliary machinery • Boil Of Gas (BOG) • Ballast / bunker • LD / HD compressor control • Boiler ACC / RMS • Load and stability calculator • Main steam turbine Custody Transfer System (CTS) Safety Management System • Cargo ESD • Fire and gas monitoring2
  • 3. The Operator Station (OS) is based upon the Windows XP operating system. Dedicated process displays are created in conjunction with the customer, to provide the best operational environment. Historic logging of alarms, events and process variables is available for display in trends and Integrated Bridge historic event lists. Reporting and data export facilities are also provided through • Vessel Automation administrative net. All process instruments, motors, valves, sensors, etc. are interfaced to the • Machinery Control Field Stations (FS) via an extended use of Remote I/O units. These are available both for • Navigation hazardous and safe areas. Algorithms for process control and monitoring as well as alarm Compressor Room generation are executed in the redundant process controllers within the Field Stations. The high-speed data communication between the various computers in the system is via a redundant network. Network segmentation (bridging) and traffic monitoring are alsoLocal Operator available. Station CCR Cargo, Ballast Load Calculator Voyage Data Remote Diagnostic Recorder Remote Joystick Control Fire Monitoring Main Boiler Control Gensets Diesel/Turbines ECR • Machinery Control • Power Management Historical Station • Auxilliaries Steam Turbine/Gear 3
  • 4. Control philosophy for various applications Kongsberg’s main goal has been to develop an IAS capable of implementing all features that may appear for LNG carriers, both today and in the future. All control options, both manual and semi-automatic, that exist in today’s systems are maintained. Automatic control is implemented for: • Cargo pump discharge pressure • Spray pump pressure • Spray nozzle pressure • Low and high duty compressor capacity • Vaporiser and heather flow and temperature Cargo handling control and monitoring of: • Cargo tank • Gas Management System (GMS) • Manifold operation • LD Compressor • HD Compressor • Heathers • Vaporisers Cargo tank control and monitoring of: • Cargo pumps • Spray pumps • Temperature indicator • Volume calculations Boiler operation (ACC/ BMS) • Alternative fuel options (HF / BOG) • Valve operation • Steam pressure • Water level4
  • 5. Additional functionality, by means of Operational elements already prepared forsequencing add further value to cargo integration with IAS are:operation: • Safety application covering Cargo-ESD and F&G systems• Cool down cargo tanks • Online load and stability calculator• Cargo loading including line set-up • Training simulator• Cargo unloading including line detachment • Thruster control• Ballast control during loading and unloading • Remote satellite diagnosis service• Ballast control during voyage • Communication link between vessel and management office• Power management of steam and diesel generator sets• BOG control i.e. cargo tanks to steam turbine Sequence Control, performing automatic firing of burners for HF oil and BOG gas • Overview of all sequence step • Manual override control per sequence steps • Interlock status overview Trending functionality • All analog input signals • Adjustable time span axis • Pop-up frames transferable to other mimics Custody Transfer System • Loading report • Unloading report • Manual input of cargo level • All relevant cargo tank information 5
  • 6. CTS – Custody Transfer System Kongsberg radar based level gauging systems and Custody Transfer Systems have been in operation on gas tankers since 1989. The Custody Transfer System (CTS) is designed for LNG carriers, both with spherical and membrane type tanks. The radar based level gauging system, the temperature sensors and the pressure transmitters are all specially designed to provide continuous and reliable accuracy in the demanding environment of liquefied gas. With the unique AutroCAL® function we have provided the market with the first fully automated calibration and verification method commercially available. Shore Communication Temperature and Pressure Transmitter Radar Based Level Gauge Integrated Bridge System Still Pipe Joints with Reflector Plate CCR Back up Display Temperature Sensors ECR6
  • 7. AutroCAL® - the unique calibration and verification functionGas vapour density and the mixture of gases influence the propagation speed of the radarsignal and thus the accuracy of the measurements. By using the designed still pipe jointsignatures for continuous measurement and calibration, combined with accurate temperaturemeasurement, AutroCAL® continuously compensates for inaccuracies caused by thedifferences in the propagation speed. Thus, our AutroCAL® verification and calibrationfunction automatically ensures that the same high accuracy is maintained over the wholemeasurement range, independent of the gas mixture and its partial pressure. Housing for Sensor Electronics Connection Box Radar Antenna Temperature measurement Pressure measurement Flange for Tank Penetration Teflon Plate facing Cargo Temperature sensor pipe Pipe support Teflon lining (PEHD) Fastening Brackets Circular still pipe, 50mm diameter stainless steel or aluminium alloy Pipe Joints, with teflon signature plate Reflection from cargo surface Reflection from teflon signature in still pipe 7
  • 8. Bridge Line® Integrated Navigation System The Kongsberg integrated navigation bridge provides a truly integrated and class compliant system with integrated navigation and manoeuvring capabilities. It is designed for one-man operation, with functionality that allows maximum time for observation and decision making. The navigation bridge equipment can be scaled to requirements and extended with bridge wing consoles, and planning and survey centre. Our bridge solutions offer improved situational awareness for watch officers, providing a complete real-time picture of the ship’s position and movement, with correlation of overlaid radar targets on electronic chart display and information systems. The core of the BridgeLine® system consists of the DataBridge® radar/ARPA display, the SeaMap® Electronic Chart Display and Information System and the Conning information display. The adaptive autopilot constantly feels the behaviour of the vessel and adjusts the use of rudder to match the actual conditions. The autopilot can be operated via its own panel, or remote controlled from any DataBridge® or SeaMap unit®. When connected to the BridgeLine® system, the standard heading mode is accompanied with three additional steering modes: • Course - wind and current compensated heading mode • Waypoint steering • Full ANTS approved track control Added values A full scale vessel management system is obtained when our navigation system is integrated with the automation system. With different functions applied on the same hardware platforms, the amount of onboard spare parts can be reduced and savings made. In addition, excellent maintainability and simple upgrading solutions reduces overall life cycle costs.8
  • 9. Simulation/EngineeringSIMULATIONKongsberg can supply a simulator with functions that mirror the vessel system, which can beused either by the ship yard or the ship’s crew. The simulator enables easy familiarization withthe operation of the vessel with functionality including loading/unloading, BOG handling,Power Management and Boiler Contol.ENGINEERINGKongsberg will provide engineering services to assist the customer in design of the controlsystem, i. e. establish the functional requirements for the control of various machinery. Thiswill typically include:• Facilitate the interface meetings/discussions with yard and other sub-suppliers• Checking control requirements/interface diagrams for machinery, switchboard, motor control centres, solenoid valve cabinets, etc.• Checking system response time requirements for each control loop• Detection of possible failure modes and the required response to the identified faults• Defining distribution of process segments and I/O signals to the different process cabinets based on requirements of system perfomance, limitation of field cables, authority requirements, etc.• Specification of serial interface to other suppliers• Write Functional Design Specification (FDS) for the control system 9
  • 10. The new standard LNG Carrier Today’s high activity in the gas transport market, combined with the price fluctuations on LNG, motivates the development of alternative propulsion methods for LNG Carriers. Propulsion alternatives for future LNG Carriers: • Two stroke engines based on HFO only • Medium speed Dual-Fuel engines (BOG/LFO) for electrical propulsion • Gas turbines for electric or direct propulsion • Improvement of existing steam driven propulsion plant Additionaly, other loading and offloading principles are also under further development, including regasification units and buoy connection to onshore pipelines. Regasification CTS Reliquefaction RIO 400 Tunnel Thruster Submerged Turret Loading RIO 400 Ex Data Net Redundant Ex NET Ex NET Engine Control Room • Machinary Control • Power Management • Auxilliaries • Historic Station10
  • 11. Propulsion with Two Stroke Engine Integrated Bridge Remote • Dynamic Positioning Diagnostic • Vessel Automation • Machinery MonitoringCargo Control Room Data Voyage • Load Calculator Recorder • Cargo • Ballast Remote Joystick Thermal Bog Oxidizer Fire Monitoring System Dual Fuel Electrical Propulsion 11
  • 12. Upgrading Kongsberg’s vessel control system has successfully been retrofitted on existing LNG carriers in order to extend the vessel’s lifetime. The structure of the these systems makes it easy to install, and minimizes cabling by using existing field cabling as much as possible. We can also take on responsibility for engineering of cabling and field instrumentation. Upgrading may for example include: • Power management w/ auxilliary machinery control • Ballast / cargo monitoring and control • Custody Transfer System • Navigation system • Propulsion These integrated upgrades provide a modern vessel control system that utilises sophisticated technology for safe and efficient vessel operation.12