Unit 1 Types of offshore structures and conceptual development

8 lecture hours

• (Offshore Structural systems – Jacket
• tension leg etc)- Loads on Offshore Structures
• Wind Loads
• Wave and Current Loads
• Calculation based on Maximum base Shear and Overturning Moments
• Design Wave heights and Spectral Definition
• Hydrodynamic Coefficients and Marine growth
• Fatigue Load Definition and Joint Probability distribution
• Seismic Loads

Unit 2 Concepts of Fixed Platform Jacket and Deck Jacket concepts,

• redundant framing arrangement
• Launch and Lift jackets
• Simple 08 20 Deck configurations for Lift and float-over installations
• In- service and Pre-service Loads and analysis

Unit 3 Steel Tubular Member Design Principles of WSD and LRFD;

10 lecture hours

• Allowable stresses and Partial Safety Factors
• Tubular Members
• Slenderness effects
• Column Buckling
• Design for Hydrostatic pressure
• Design for combined axial and bending stresses (API RP2A guidelines)

Unit 4 Tubular Joint Design for Static and Cyclic Loads Simple tubular

6 lecture hours

• design using allowable loads
• stress concentration factors
• S-N curves and fatigue damage calculations
• Offshore drilling Underwater welding

Unit 5 Corrosion - Corrosion mechanism - Types of corrosion -

8 lecture hours

• Offshore structure corrosion zones – Biological corrosion - Preventive measures of Corrosion - Principles of cathode protection systems - Sacrificial anode method and impressed current method – Online corrosion monitoring - Corrosion fatigue