Dp Presentation

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Dynamic Positioning - Introduction

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Dp Presentation

  1. 1. DYNAMIC POSITIONING “AN INTRODUCTION”
  2. 2. Dynamic Positioning Operator  Nautical Institute DPO certification progress paths
  3. 3. DP Topics  Background  Principles of a DP  Elements of a DP System  Position Reference Systems  DP Operations  Class to DP System Class
  4. 4. Background - DP o Dynamic positioning (DP) is born in the 1960s.  Dynamic Positioning (DP) began in 1960’s  “Eureka” first DP vessel in 1961 o1000 over vessels/platform presently in serviceof 1961. The first dp vessel was the "Eureka",
  5. 5. Summary DP Installations  DP Drilling platforms  Diver Support Vessel – DSV  Pipelay (rigid and flexible)  Cable lay and repair  Hydrographic surveys  Dredging  Shuttle tanker  Floating production(with/without storage)  Remote Operated Vehicle – ROV  OSV, PSV Multi-purpose
  6. 6. DP Advantages  Vessel Heading set by:  DP operator – manual  DP system – automatic  Vessel Position set by:  DP operator – manual  DP system – automatic  Support close proximities  10m from crane – typical  Above drill or dive location  Construction  Retrieval
  7. 7. Principles of DP  Definition  A system which automatically controls a vessel’s position and heading exclusively by method of propeller generated thrust force, from Main propulsion and thrusters.
  8. 8. Principles of DP Schematic diagram of DP system
  9. 9. DP Control System
  10. 10. DP Position Model  Kalman Filter
  11. 11. Principles of DP  Six freedoms of vessel movement  DP controlled axis  Yaw, Surge and Sway  DP measured  Roll, Pitch and Heave  DP is concerned with the automatic control of Surge, Sway and Yaw. Surge and Sway comprise the position of the vessel, while Yaw is the vessel heading
  12. 12. Elements of DP System  DP Control Console(s)  DP Signal Processing Unit(s)  Programmable Logic Controllers  Input/Output Modules  Analogue  Digital  Heading  Gyro  Position  DGPS
  13. 13. Elements of DP System  Propulsion / Thruster Configurations
  14. 14. Position Reference Systems  Differential GPS  Hydroacoustic Position Reference (HPR)  Taut Wire  Laser-Optical  Differential Absolute Relative Position System (DARPS)
  15. 15. POSITION REFERENCE  Differential Global Position System
  16. 16. Hydroacoustic Position Reference (HPR) System  Long Baseline  Short Baseline  Ultra-Short Baseline  Super-Short Baseline
  17. 17. Hydroacoustic Position Reference  Long Baseline
  18. 18. Taut Wire – Position Reference System  Static work locations  Limited by cable length  Electro-Hydraulic winch  Deck mount, 90° over vessel side  Weight to stabilize cable to seabed  Measure 30° vertical angle  Vessel position movement
  19. 19. Optic – Laser Position Reference  Fanbeam Cyscan
  20. 20. DARPS Position Reference System Differential Absolute and Relative Position System
  21. 21. DP Operations  Diving  Surface  Saturation  Deep
  22. 22. DP Operations  Survey and ROV Support
  23. 23. DP Operations  Seabed Tractors and Trenchers
  24. 24. DP Operations  Pipelay Operations  S-Lay  J-Lay  Reel-Lay
  25. 25. DP Operations  Track-Follow (Waypoint Routes)
  26. 26. DP Operations  Cable Lay and Repair
  27. 27. DP Operations  DP Drilling  Ships  Semi-Sub
  28. 28. DP Operations  Offtake Tanker  FPSO
  29. 29. DP Operations
  30. 30. DP Class to Survey Classification
  31. 31. NAUTICAL INSTITUTE  Dynamic Positioning Operator – Unlimited

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