The Challenge:
The underdeck drain access platform on VOGA’s WNB platform was severely corroded and required replacing.
The Solution:
Cube Offshore were engaged to develop a modular replacement concept and carry out detailed structural design of the replacement access platform.
The design encompassed the following attributes:
- modular design to minimise handling and offshore construction
- component design to fit through existing under deck scaffold
- full structural design compliance with the revised VOGA WNB Basis of Design
The Scope:
The scope of work included:
- Basis of Design
- Functional Specification
- Concept development
- Detailed engineering design in accordance with ISO 19901-3 including:
- Operating (5yr non-cyclonic) – ULS-A
- Extreme (100yr cyclonic) – ULS-B
- Accidental (2000yr) – ALS
- Extreme Seismic – ELE
- Abnormal Seismic – ALS
- Component lift design to DNV 2.7-3 R30 rating
- 3D modelling, fabrication drawings & dxf files
- Modular construction for transport & offshore lifting
- Fabrication specifications.
Early modular concept Staad.Pro analysis model
Staad.Pro analysis output 3D CAD model – exploded view
Component lift analysis (DNV 2.7-3 R30) Component lift design (DNV 2.7-3 R30)
