Technical Capability
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Fit-up Work
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Dimension Control
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Welding
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NDT, Non-destructive Testing
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Coating/Blasting
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Heavy-lift
Transportation -
Project Management
Fit-up Work
- Assembly work executed in accordance with DNVGL-OS-C401 and client specifications.
- Assembly processes are carried out on-site based on engineering drawings and designated workstations, utilizing hydraulic tools with customized jigs for alignment. All assembly dimensions are adjusted and controlled within the required tolerances.
Dimension Control
- Total Station: Accuracy ±0.5”
- Laser Tracker: Accuracy ±0.078 mm
- Easy Laser: Accuracy ±0.03 mm
Different measuring equipment is available to meet required alignment accuracy and application needs Total Station:
- Spatial dimensions in the X, Y, and Z axes are available for precise positioning.
- Typical components requiring measurement in jacket foundation projects include: Jackets, Transition Piece (TP), Upper Jacket (UJ), Lower Jacket (LJ), and Secondary Structures.
Depending on the equipment and application, measurement data can be generated for use in assembly and quality control.
Welding
- Welding procedures are carried out in accordance with the European standard ISO 3834.
- Equipment: TIG welding machine, CO₂ welding machine and semi-automatic orbital welding machine.
- Welding Capabilities: Qualified for 2G, 3G, 4G, 5G, 6G, and 6GR welding.
- Specialized Capabilities: Small-angle welding for node branch connections (25–40°).
- Large-diameter welding for extra-thick plates (90–105 mm) with diameters Ø1450–3500 mm.
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X-BRACE
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LJ-2D BRACE
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LJ-3D BRACE
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LJ-3D BRACE
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X-BRACE
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LJ-2D BRACE
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LJ-3D BRACE
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LJ-3D BRACE
Non-destructive Testing
- Weld inspection procedures are carried out in accordance with the European standard DNVGL-OS-C401 and CG-0051 specifications.
| Method | Application Area | Inspector Level |
|---|---|---|
| VT – Visual Testing | Appearance | Level Ⅱ |
| PT – Penetrant Testing | Surface/Subsurface | Level Ⅱ |
| MT – Magnetic Particle Testing | Surface/Subsurface | Level Ⅱ |
| UT – Ultrasonic Testing | >8mm Plates | Level Ⅱ |
Coating/Blasting
Workflow:
- Standards: ISO 12944, Norsok M501, ISO 8501-1
- Coating Application Based on Clients’ Specifications. The transition piece (TP) is coated in three layers according to client coating specifications, with a total dry film thickness of 800 μm, meeting offshore wind design requirements.
- Blasting Grade: Sa 2½
- Coating Thickness:
- ．1st layer: 350 μm
- ．2nd layer: 350 μm
- ．3rd layer: 100 μm
