Case Study 2715 Atlantic Rotterdam Hull Analysis

Atlantic Rotterdam Wasted Steel



Rig Name: Atlantic Rotterdam
Rig Type: Jack – Up
Owner name: Atlantic Oilfield Services
Classification Society: ABS
Pertinent code: SNAME
Code design: ASD
Shipyard: Remontowa in Gdansk (Poland)

Model 3D
Please download PDF version to see 3D model – click here

Project description
Preparation of stress analysis for No 32 Preload Tank, located on FWD side of ‘Atlantic Rotterdam’ jack-up unit, was undertaken to reduce the amount of time required for the replacement of corroded sections through the optimisation of the repair process. No 32 Preload Tank repair was completed on February/March 2011 in Remontowa Shipyard, Gdansk (Poland)

FEA Model




Results




Photos




R.E. scope of work was to analyze structure of Preload Tank 32 for all loads present during repair works, such as structure self weight and weight of equipment left on platform (e.g. lifeboats, cranes). The analysis of the structure includes the following stages:

1. Stress analysis of intact state of Tank No 32 ’ in working condition’.
2. Stress analysis of crop state of Tank No 32 (all access holes for remedial works +all plate cut outs done at once) in ‘working condition’.
3. Stress analysis of crop state of Tank No 32 (all access holes for remedial works +all plate cut outs according to Shipyard sequence) in ‘working condition’.
4. Stress analysis of crop state of Tank No 32 (all access holes for remedial works +all plate cut outs according to R.E. modified sequence) in ‘working condition’, and if required.
5. Stress analysis of crop state of Tank No 32 in ‘working condition’ for one additional simulation requested by the client.
Engagement Condition
Upload your problem to us and give us relevant input to allow us to resolve your problem, we will need:
1. As built of structure to create 3D FEA model.
2. Static and environmental loads during repair.
3. Sequence replacement of corroded plates
Key word: Atlantic Rotterdam, Atlantic Oilfield Services, jack-up, wasted, corrosion