OFFSHORE PIPELINE CONSTRUCTION PHASE Pipe Laying : Normal S-Laying Method.
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Transcript of OFFSHORE PIPELINE CONSTRUCTION PHASE Pipe Laying : Normal S-Laying Method.
![Page 1: OFFSHORE PIPELINE CONSTRUCTION PHASE Pipe Laying : Normal S-Laying Method.](https://reader035.fdocuments.in/reader035/viewer/2022081419/56649c755503460f94929360/html5/thumbnails/1.jpg)
OFFSHORE PIPELINE CONSTRUCTION PHASE
Pipe Laying : Normal S-Laying Method
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OFFSHOREPIPE LAYING: Normal S-Laying Method
![Page 3: OFFSHORE PIPELINE CONSTRUCTION PHASE Pipe Laying : Normal S-Laying Method.](https://reader035.fdocuments.in/reader035/viewer/2022081419/56649c755503460f94929360/html5/thumbnails/3.jpg)
Step 1: PIPE BEVELING 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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Step 2: Station 1 (Fit up, Root and Hot Pass) 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
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Step 3: Station 2,3,4&5 Filler passes on Station 2 and 3 Cap welding on Station 4 Visual Inspection on Station 5
Sta #2
Sta #3
Sta #4Sta #5
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Step 4: Station 6 (X-Ray)
X-ray operators control the movement ofthe X-ray crawler inside the pipe
Wrapping the film around the intended joint
Radiographic intrepeters from HHI, Client andMigas are reviewing the X-ray result
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Step 5: Station 7& 8 (Brush up and Cold Wrap)
Sta #8: Cold WrapSta #7: Brush up
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Step 6: Station 9 (FIELD JOINT COATING) & PULLING Foam Coating performed by OJS (Offshore Joints
Service)
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WELDING
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X - Ray
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Coating
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Laying
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HD 423
Laying
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LINE PIPE ON SEA BED
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P2
P1
S1
S2
P4
S4
P5
S5
How the Barge Moves
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P2
P1
S1
S2
P4
S4
P5
S5
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P2
P1
S1
S2
P5
S5
P4
S4
P5
S5
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P2
P1
S1
S2
P4
S4
P4
S4
P5
S5
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P1
S1
P2
S2
P4
S4
P2
S2
P5
S5
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P2
S2
P4
S4
P1
S1
P5
S5