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Modular Spiral Stairs For Petrobras Semisubmersible

Modular Spiral Stairs For Petrobras Semisubmersible

Maintenance stairs in semisub legs should ideally be easy to instal, maintenance free and lightweight.

We were asked to design and manufacture a modular spiral stair system by KeppelFels for Petrobras on such a project. The final design was lightweight (about 25% of a steel equivalent), quickly assembled (1 week for a 55m high stair) and completely maintenance free. The system components were produced in the factory and trial assembled before being shipped to site for re-assembly. Needless to say, the overall cost of the system was cheaper than a steel equivalent. All system parts are customized extrusions which means that they stairs are easily reproduced to exact detail on future, similar projects without much trouble.

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