MTS DP Conference 2002

Transcription

1 DYNAMIC POSITIONING CONFERENCE September 17-18, 2002 Control Systems A Safer Ship to Ship DP Control Strategy Allan Meahan Chris Bannigan ALSTOM (UK) Date of last change Reference/Name of Presentation/SN 1

2 A Safer Ship To Ship DP Control Strategy The Problem or Challenge The Solution Position Reference System DP Control System Mode Slide 1 - Overview Date of last change Reference/Name of Presentation/SN 2

3 Slide 2 - Shuttle Tanker at Stern of FPSO Date of last change Reference/Name of Presentation/SN 3

4 Slide 3 - PSV Offloading at a TLP Date of last change Reference/Name of Presentation/SN 4

5 Slide 4 - PSV Approaching Semi-Sub Sub Date of last change Reference/Name of Presentation/SN 5

6 Target Vessel DP Workboat Fore Port Starboard Aft Slide 5 - Workboat / Target Vessel Movement Relationship Date of last change Reference/Name of Presentation/SN 6

7 Target Vessel DP Workboat Rotational Movement (heading change) Slide 6 - Workboat / Target Vessel Heading Relationship Date of last change Reference/Name of Presentation/SN 7

8 Correction UHF Link Correction Slide 7 - Relative GPS Operation Date of last change Reference/Name of Presentation/SN 8

9 Solution Suitable Position Reference Sensor DP Control Mode - Ship/Mobile Follow Slide 8 - Solution Overview Date of last change Reference/Name of Presentation/SN 9

10 Laser Beam Fanned in Two Axes Stabilized Levelling Platform for Wave Motion Compensation and Elevation Tracking Slide 9 - CyScan - Position Reference System Date of last change Reference/Name of Presentation/SN 10

11 Slide 10 - CyScan Located on PSV Date of last change Reference/Name of Presentation/SN 11

12 Reflective Target Target Vessel Slide 11 - Effects of Leveller Date of last change Reference/Name of Presentation/SN 12

13 Slide 12 - Typical Target Configuration Date of last change Reference/Name of Presentation/SN 13

14 Slide 13 - North Sea - Targets on TLP Date of last change Reference/Name of Presentation/SN 14

15 Slide 14 - North Sea - Targets on TLP Date of last change Reference/Name of Presentation/SN 15

16 Slide 15 - Brazil - Targets on Semi-Sub Sub Date of last change Reference/Name of Presentation/SN 16

17 DP VESSEL ß Cyscan B pos A pos TARGET VESSEL Slide 16 - CyScan Operator Interface Date of last change Reference/Name of Presentation/SN 17

18 Cyscan Main Features:- Standalone System - providing relative position and heading information to the DP operator Data base of all target vessels visited Pitch and Roll Compensation Manual/Automatic tracking of targets Single target or multiple target tracking Simple to use operator interface Slide 17 - CyScan Main Features Date of last change Reference/Name of Presentation/SN 18

19 DP System Control Mode:- Ship/Mobile Follow Mode Pure Ship/Mobile Mode Ship/Mobile Follow with Laser System Only Ship/Mobile Mode with reaction circle Ship/Mobile Follow with Laser System and DGPS system DP VESSEL ß DP VESSEL ß Cyscan B pos Cyscan B pos A pos A pos TARGET VESSEL TARGET VESSEL Slide 18 - Workboat / Target Vessel Relative Heading Date of last change Reference/Name of Presentation/SN 19

20 TARGET VESSEL COR DP VESSEL Slide 19 - Workboat / Target Vessel Relative Heading Change Date of last change Reference/Name of Presentation/SN 20

21 Ship/Mobile Follow Mode features:- Heading Deadband Target Vessel Reaction Radius (operator selectable) Target Vessel Heading Monitoring Cyscan PME Icon (showing relative position and heading of target vessel) Position and Heading changes (as per standard) Operator selection of Target heading Slide 20 - Workboat / Target Vessel Relative Heading Date of last change Reference/Name of Presentation/SN 21

22 MTS DP Conference 2002 Slide 21 - Simple Simulation of Ship Follow Date of last change Return to Session Directory Reference/Name of Presentation/SN 22