An offshore complex is surveyed and modelled using photogrammetry to ensure modifications achieve a first time fit. Zero re-work was the goal and was readily attained. Project managed by Gerard Hind.

1. OFFSHORE SURVEY M1
BETWEEN MONDAY 26-08-02
AND FRIDAY 30-08-02
THIS REPORT COVERS 3 STRUTS
FOR THE PQ PANEL AND 2
STRUTS FOR THE DR PANEL
This report is compiled
by
Gerard Hind Technical Director.

2. LEG #2
LEG #1
LEG #0
PQ PANEL LOOKING NORTH EAST AND UP – BLUE IS AS-BUILT OFFSHORE
AND GREEN/YELLOW IS NEW PANEL

3. LEG #1
LEG #2
DR PANEL LOOKING NORTH WEST AND UP – BLUE IS AS-BUILT OFFSHORE
AND GREEN/YELLOW IS NEW PANEL.

4. PQ PANEL MISFIT REPORT
THIS REPORT IS BASED ON THE PANEL BEING
IN THE BEST FIT LOCATION AS REQUESTED BY
SSB. THIS LOCATION IS MATCHING ON FIT
POINT #2. SEE NEXT PAGE FOR CLARITY.

5. FIT POINT #2
PLAN VIEW OF PANEL IN POSITION AS REQUESTED BY
SSB. ZERO ERROR ON FIT POINT #2.

6. 2
3
1
ERROR AT BOTTOM OF LEG 1 IS EAST 39.32 MM NORTH 2.80 MM UP 49.55 MM OF DESIGN POSITION
ERROR AT BOTTOM OF LEG 2 IS EAST 17.05 MM NORTH 30.47 MM UP 21.45 MM OF DESIGN POSITION
ERROR AT BOTTOM OF LEG 3 IS EAST 48.84 MM SOUTH 33.36 MM UP 32.65 MM OF DESIGN POSITION

7. ERROR AT TOP OF LEG 2 IS EAST 8.22 MM NORTH 82.21 MM OF DESIGN POSITION
ERROR AT TOP OF LEG 1 IS EAST 14.96 MM SOUTH 25.05 MM OF DESIGN POSITION
ERROR AT TOP OF LEG 0 IS WEST 15.70 MM S 8.48 MM OF DESIGN POSITION
SEE FOLLOWING PAGES FOR ELEVATION ERRORS

8. OFFSET SERVICES WERE REQUESTED BY SSB TO
MARK A CUT LINE ON EACH LEG THAT MATCHED
THE NEW PANEL BEING FABRICATED BY SSE.
THE CUT LINE HAS BEEN POSITION BY TARGETS
AND CENTRE PUNCHED BY SUPPORT CREW (SARKU)
THE LINE TARGETED AND MARKED ON EACH LEG IS
10 MM HIGHER IN ELEVATION THAN THE DESIGN
ELEVATION – THIS IS TO ALLOW FOR SETTLEMENT.

9. FOLLOWING CUT LINE MARKING EACH
AREA WAS PHOTOGRAPHED AND THE
SURVEY POINTS ADDED TO THE MAGAN
DATABASE. THE FOLLOWING GRAPHICS
DEMONSTRATE THE ACCURACY
ACHIEVED BY OFFSET SERVICES.
ACCURACY OBTAINED ON PQ STRUT
POSITION AND CUT LINE ELEVATION IS
+/- 2 MM.

10. PLAN VIEW SHOWING CUT RESULT AND PURPLE
BOXES ARE THE TARGET LOCATIONS. LEG #2

11. PLAN VIEW SHOWING CUT RESULT AND PURPLE
BOXES ARE THE TARGET LOCATIONS. LEG #1

12. PLAN VIEW SHOWING CUT RESULT AND PURPLE
BOXES ARE THE TARGET LOCATIONS. LEG #0

13. PHOTOGRAPHIC PROOF SHOWING CUT RESULT –
POST CUT LEG SHOWN IN YELLOW – LEG #2

14. PHOTOGRAPHIC PROOF SHOWING CUT RESULT –
POST CUT LEG SHOWN IN YELLOW – LEG #1

15. PHOTOGRAPHIC PROOF SHOWING CUT RESULT –
POST CUT LEG SHOWN IN YELLOW – LEG #0

16. ELEVATION LOOKING NORTH SHOWING CUT
MARKERS AND LEG #2

17. ELEVATION LOOKING NORTH SHOWING CUT
MARKERS AND LEG #1

18. ELEVATION LOOKING NORTH SHOWING CUT
MARKERS AND LEG #0

19. VIEW SHOWING ALL THREE LEGS AND NEW
PANEL

20. VIEW LOOKING UP LEG #2 AND RELATIONSHIP TO
HARD POINT.

21. VIEW LOOKING UP LEG #1 AND RELATIONSHIP TO
HARD POINT.

22. VIEW LOOKING UP LEG #0 AND RELATIONSHIP TO
HARD POINT.

23. DR PANEL MISFIT REPORT
THIS REPORT IS BASED ON THE PANEL BEING
IN THE DESIGN LOCATION AS PROPOSED BY
TECHNIP.
(NO ALLOWANCE HAS BEEN MADE FOR
SETTLEMENT)
DUE TO LIFTING OPERATION AT TIME OF
SURVEY DR STRUTS ARE ACCURATE TO
WITHIN +/- 5 MM. CRANE MOVEMENT CAUSES
PLATFORM TO MOVE OUT OF LEVEL.

24. DR PANEL LOOKING NORTH WEST AND UP – BLUE IS AS-BUILT OFFSHORE
AND GREEN/YELLOW IS NEW PANEL.

25. LEG #1
LEG #2
ERROR AT BOTTOM OF LEG 1 IS EAST 2.84 MM SOUTH 25.37MM OF DESIGN POSITION
ERROR AT BOTTOM OF LEG 2 IS WEST 67.28 MM NORTH 0.62 MM OF DESIGN POSITION
VIEW LOOKING NORTH WEST AND UP

26. LEG #1
LEG #2
ERROR AT TOP OF LEG 1 IS WEST 16.84 MM NORTH 8.26 MM OF DESIGN POSITION
ERROR AT TOP OF LEG 2 IS WEST 6.06 MM NORTH 3.35 MM OF DESIGN POSITION
VIEW LOOKING NORTH WEST AND UP

27. PLAN VIEW SHOWING LED #1 AND CUT
MARKERS

28. PLAN VIEW SHOWING LED #2 AND CUT
MARKERS

29. ELEVATION LOOKING NORTH SHOWING CUT
MARKERS AND LEG #1

30. ELEVATION LOOKING NORTH SHOWING CUT
MARKERS AND LEG #2

31. PHOTOGRAPHIC PROOF SHOWING CUT RESULT –
POST CUT LEG SHOWN IN RED – LEG #1

32. PHOTOGRAPHIC PROOF SHOWING CUT RESULT –
POST CUT LEG SHOWN IN RED – LEG #2

33. VIEW LOOKING UP LEG #1 AND RELATIONSHIP TO
HARD POINT.

34. VIEW LOOKING UP LEG #2 AND RELATIONSHIP TO
HARD POINT.

35. PQ DIMENSIONS OF MATCH POINTS
REQUESTED BY SSB FOR ZERO ERROR
FIT ON MATCH POINT #2.

36. ZERO ERROR ON
MATCH #2
VIEW SHOWING MATCH POINTS REQUESTED

37. 12 MM THE PANEL BEAM IS 12 MM NORTH OF EXISTING
1956 MM
THE PANEL BEAM IS 52 MM NORTH OF EXISTING
52 MM
1116 MM WEB TO WEB
PLAN VIEW SHOWING DIMENSIONS.

38. SSB REQUESTED LEVEL
ASSESSMENT ON DRILLING WEST
EXTENSION
THIS FLOOR PANELS DIRECTION IS EAST 0.18 DEGREES UP AND NORTH 0.17
DEGREES DOWN.