Course

Introduction to Wave Mechanics – Wave generation by Wind – Small Amplitude Wave Theory ; Formulation and solution, Wave Celerity, Length and Period, Classification of waves based on relative depth, Orbital motions and Pressure – Standing waves – Wave trains and Wave energy – Wave reflection, Wave refraction and Wave diffraction – Breaking of waves. Types of wave theories and its applications Types of offshore structures and conceptual development – Analytical models for jacket structures – Materials and their behaviour under static and dynamic loads – Statutory regulations – Allowable stresses – Various design methods and Code Provisions – Design specification of API, DNV, Lloyd’s and other classification societies – Construction of jacket and gravity platforms. Operational loads – Environmental loads due to wind, wave, current and buoyancy – Morison’s Equation – Maximum wave force on offshore structure – Concept of Return waves – Principles of Static and dynamic analyses of fixed platforms – Use of approximate methods – Design of structural elements. Introduction to tubular joints – Possible modes of failure – Design aspects as per API Code for tubular joints – Fatigue of tubular joints – Fatigue behaviour – S-N curves – Palmgren-Miner cumulative damage rule – Corrosion – Corrosion mechanism – Types of corrosion – 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. Case studies on fixed platform construction and its erection.