Offshore Floating Structures Training

Programme

Day 1

08.30 – 09.00 Delegate Registration

09.00 – 10.30 Lecture 1: Environmental Loads and Motions: Environmental Conditions; Wave Drift Forces and Movements; Wind and Current Loads – Dr O Khattab

10.30 – 10.45 – Break

10.45 – 12.15 Lecture 2:Buoyancy and Stability: Current Codes; Intact and Damage Stability; Recent Code Developments – Dr O Khattab

12.15 – 13.30 – Lunch

13.30 – 15.00 Lecture 3:Structural Response I: Standards and guidelines; Stiffened plated structure – Prof P K Das

15.00 -15.30 – Break

15:30 – 17:00 – Lecture 4: Structural Response II: Standards and guidelines; stiffened shells – Prof P K Das

17:00 – Closure

Day 2

09:00-10:30 – Lecture 5:Catenary Mooring System: Concepts and Equipment; Design and Operational Requirements; Mooring Forces – Dr O Khattab

10:30 – 10.45 – Break

10:45 – 12:15 – Lecture 6: Tension-leg Mooring System: Concepts, Components and Equipment; Design and Operational Requirements; Sea Load and Seismic Effects – Dr O Khattab
12:15 – 13:30 Lunch

13:30 -15:00 – Lecture 7: Tanker Based FPSOs I – Prof P K Das

15:00 – 15:30 – Break

15:30 – 17:00 – Lecture 8: Tanker Based FPSOs II – Prof P K Das

17:00 Closure

Day 3

09:00 -10:30 – Lecture 9: Semi-submersibles Design I: Operational Requirements; Design Parameters; Sizing, Stability Requirements; – Dr O Khattab

10:30 – 10:45 – Break

10:45 -12:15 – Lecture 10: Semi-submersibles Design II: Seakeeping Motions; Wind, Current and Wave Forces; Station Keeping, Mooring and DP Systems – Dr O Khattab

12:15-13:30 – Lunch

13:30 -15:00 – Lecture 11: Jack up Design – I – Nandakumar Kunnanchath

15:00 -15:30 – Break

15:30 -17:00 – Lecture 12:Jack up Design-II – Nandakumar Kunnanchath

17.00 – Closure

Course Contents

Lecture 1: Environmental Loads:

Wave load-Linear wave theory-Basic assumptions-Governing equations-Solution of linear wave-Wave energy (Potential and kinetic)-Kinematics of water particles- Particles velocity and accelerations. Statistical description of sea waves-idealised wave spectral families-JONSWAP, Bretschneider (ISSC), Pierson Moskowitish spectrums-Vortex shedding-Induced loads-Wave load on large bodies “Diffraction theory”-Wind loads-Current loads.

Lecture 2: Buoyancy and Stability:

Flotation-Principle of Archimedes-Centre of buoyancy-Static equilibrium-Sinkage, trim, combined heel and trim. Intact stability-Transverse stability-Longitudinal stability-effect of free liquids and special cargoes-Curves of statical stability-Influence of hull form on ship stability-Factors affecting transverse stability-Dynamical stability. Flooding and damage stability-Damage stability calculations-Floodable length curves. Stability standards-Intact stability-Subdivision and damage stability.

Lecture 3: Structural Response I – Stiffened Plated structures

Buckling & post buckling of unstiffened plates, Ultimate strength of stiffened plate, combined loading under axial & lateral load, Design codes API RP 2V, DNV- RP-C201, Example problems

Lecture 4: Structural Response II – Stiffened Shell structures

Elastic and inelastic buckling of unstiffened & stiffened shells under axial, hydrostatic & combined loading, Design codes API RP 2U, DNV- RP-C202, Example problems

Lecture 5: Catenary Mooring System

Statics of mooring lines-Heavy and short cable (catenary)-Naturally buoyant cables-All forces considered-Mooring with elasticity-Two dimensional mass-spring system-Statics of multiple leg mooring system-Method of imaginary reaction-Load excursion-static equilibrium-Cable equilibrium in three dimensional.

Dynamics of mooring lines-Significance of line dynamics-Mooring line as continuous medium-Cable wave equation-Solution of wave equation-Mooring line as mass spring system-Equation of restoring force-Damping force-exciting force.

Lecture 6: Tension-Leg Mooring System

Dynamics of moored structure: Dynamic load and response analysis-Motion characteristics-Stiffness effect on wave frequency motions-Shallow water effect-Slow drift due to wind and waves-Damping of slowly varying response-Transient analysis. Tension leg platforms advantage and limitations-tether system design-Functional requirements-Configurations-Tether make ups-Single tether analysis-Hydrodynamic loading-Modal analysis-Functional Requirements.

Lecture 7: Tanker Based FPSO I

Process of offshore oil and gas developments, Different type of Floating Offshore Structures, FPSO & History of FPSO Installations, Pros & Cons, Usage and functions, Mooring the FPSO, field layout effects, offloading, Operating Environment, Mobility, Layout and General arrangement, Tank conversion, Longitudinal Strength characteristics, Tank design and arrangement, Design principles, Limit states, probability safety factor.

Lecture 8: Tanker Based FPSO II

Strength of ships, bending moment, collapse analysis, beams and columns, loads on beams and columns, Local strength assessment, tripping of stiffeners, Software method, Analytical method, fatigue Analysis, methods of analysis, SN – Curves, Stress and Strain controlled fatigue, Stress range estimation, Stress concentration factors, fatigue loading and stresses, Structural finite element models and examples.

Lecture 9: Semi-submersible Design-I

Design procedure-Design Regulations-Conceptual design criterion-General arrangements-Gravity load-Icing load-Steady environment forces-Wind, current and waves-Resistance and propulsion-Hydrodynamic forces-Operational loading-Wave Loading-Drag and Diffraction forces-Stability requirements-Intact, Subdivision and damage stability.

Lecture 10: Semi-submersible Design II

Seakeeping motions-Heave equation-Hydrodynamic response criteria-Calculation procedure of the seakeeping performance-General strength and structure design-Mooring system-Station keeping-Spread mooring-Method of Analysis-Environment data-Wind, wave, current-Water depth-Soil and sea floor conditions-Atmospheric icing-Marine growth-Basic considerations of environmental load.

Dynamic positioning-Station keeping capabilities-Wind forces and moment-Mean wave drift forces and moment-Capability plot of DP system.

Lecture 11: Jack up Design Part I

Special Considerations in the design of jack up platforms, Modes of Operation, Environmental loading on jack ups, Stability Afloat, Jack ups in elevated mode, Soil Mechanics and Foundation behaviour, Spud can fixity effect, Preloading, Punch Through, Stability against overturning, Jack ups Afloat, wet tow, dry tow, field moves and ocean tow, fatigue during tow. Dynamic behaviour of jack ups, Non-linear behaviour – geometric non-linearity, material non-linearity, foundation non-linearity and non-linear wave response.

Lecture 12: Jack Up Design Part II

Site specific assessment of jack ups in extreme storm survival, progressive collapse analysis, reserve strength ratio and redundancy ratio, selection of appropriate leg configuration, DnV and ABS rules for design of self-elevating units, SNAME 5-5A Guideline for Site Specific Assessment of Mobile Jack Up units and ISO 19905-Part 1 standard for Jack Up Assessment. Reliability of jack ups, limit states, target reliability. Comparison of well-known designs, Designs for deeper water and harsher environment.

Duration: 3 Days

Cost: £650 / $1080

Offshore Floating Structures Training Aberdeen, Glasgow, Edinburgh, Inverness, Dunfermline and other sites throughout the UK including onsite closed company courses are available.

Water Handling Training Dubai, Qatar, Saudi Arabia, Bahrain, Kuwait, Abu Dhabi, India, Ghana and Nigeria is also available.