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OFFSHORE PIPELINE CONSTRUCTION PHASE

OFFSHORE PIPELINE CONSTRUCTION PHASE. Pipe Laying : Normal S-Laying Method. OFFSHORE PIPE LAYING: Normal S-Laying Method. Lift the pipe out of the supply barge onto the incoming rack Pipe Tallying (pipe number, length, joint number) Making the J-Bevel on pipe ends for Auto welding.

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OFFSHORE PIPELINE CONSTRUCTION PHASE

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  1. OFFSHORE PIPELINE CONSTRUCTION PHASE Pipe Laying : Normal S-Laying Method

  2. OFFSHOREPIPE LAYING: Normal S-Laying Method

  3. Lift the pipe out of the supply barge onto the incoming rack • Pipe Tallying (pipe number, length, joint number) • Making the J-Bevel on pipe ends for Auto welding Step 1: PIPE BEVELING

  4. Preheat on pipe end prior to welding (based on approved WPS) • Fitting pipe ends to be aligned by means of internal clamp • Root weld followed by Hot pass Step 2: Station 1 (Fit up, Root and Hot Pass)

  5. Filler passes on Station 2 and 3 • Cap welding on Station 4 • Visual Inspection on Station 5 Step 3: Station 2,3,4&5 Sta #4 Sta #2 Sta #5 Sta #3

  6. Step 4: Station 6 (X-Ray) X-ray operators control the movement of the X-ray crawler inside the pipe Radiographic intrepeters from HHI, Client and Migas are reviewing the X-ray result Wrapping the film around the intended joint

  7. Step 5: Station 7& 8 (Brush up and Cold Wrap) Sta #7: Brush up Sta #8: Cold Wrap

  8. Foam Coating performed by OJS (Offshore Joints Service) Step 6: Station 9 (FIELD JOINT COATING) & PULLING

  9. WELDING

  10. X - Ray

  11. Coating

  12. Laying

  13. HD 423 Laying

  14. HD 423 LINE PIPE ON SEA BED

  15. P4 P2 P1 P5 S5 S1 S4 S2 How the Barge Moves

  16. P4 P2 P1 P5 S5 S1 S4 S2

  17. P4 P2 P1 P5 P5 S5 S5 S1 S4 S2

  18. P4 P4 P2 P1 P5 S5 S1 S4 S4 S2

  19. P4 P2 P2 P1 P5 S5 S1 S4 S2 S2

  20. P4 P2 P1 P5 S5 S1 S4 S2

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