1st Edition

Offshore Structural Engineering Reliability and Risk Assessment

By Srinivasan Chandrasekaran Copyright 2016
    274 Pages 101 B/W Illustrations
    by CRC Press

    Successfully estimate risk and reliability, and produce innovative, yet reliable designs using the approaches outlined in Offshore Structural Engineering: Reliability and Risk Assessment. A hands-on guide for practicing professionals, this book covers the reliability of offshore structures with an emphasis on the safety and reliability of offshore facilities during analysis, design, inspection, and planning.

    Since risk assessment and reliability estimates are often based on probability, the author utilizes concepts of probability and statistical analysis to address the risks and uncertainties involved in design. He explains the concepts with clear illustrations and tutorials, provides a chapter on probability theory, and covers various stages of the process that include data collection, analysis, design and construction, and commissioning.

    In addition, the author discusses advances in geometric structural forms for deep-water oil exploration, the rational treatment of uncertainties in structural engineering, and the safety and serviceability of civil engineering and other offshore structures.

    An invaluable guide to innovative and reliable structural design, this book:

    • Defines the structural reliability theory
    • Explains the reliability analysis of structures
    • Examines the reliability of offshore structures
    • Describes the probabilistic distribution for important loading variables
    • Includes methods of reliability analysis
    • Addresses risk assessment and more

    Offshore Structural Engineering: Reliability and Risk Assessment provides an in-depth analysis of risk analysis and assessment and highlights important aspects of offshore structural reliability. The book serves as a practical reference to engineers and students involved in naval architecture, ocean engineering, civil/structural, and petroleum engineering.

    Concept of Probability and Sampling Statistics
    Reliability and Risk
    Types of Uncertainties
    Forward Uncertainty Propagation
    Bayesian Approach
    Rules of Probability
    Principles of Plausible Reasoning
    Deductive Logic
    Deductive Reasoning
    Continuous Probability Distribution Functions
    Testing of Hypotheses
    Simple and Compound Hypotheses
    Urn Distribution
    Random Variables
    Monte Carlo Simulation Method
    Importance of Sampling
    Directional Simulation
    Statistical Theories of Extremes
    Modeling of Environmental Loads
    Estimate of Distribution Parameters

    Structural Reliability Theory
    Variables in Reliability Study
    Probabilistic Approach
    Reliability Levels
    Space of Variables
    Error Estimation
    Classification of Errors
    Reliability and Quality Assurance
    Uncertainties Inherent in Design
    Uncertainties in System Design of Offshore Structures
    Reliability Problem
    Reliability Methods
    First-Order Second Moment Method
    Hasofer–Lind Method
    Second-Order Reliability Methods
    Simulation-Based Reliability Method
    Reliability Estimate Using Higher-Order Response Surface Methods
    High-Order Stochastic Response Surface Method
    System Reliability
    General Systems
    System Functions for General Systems
    Computing System Reliability
    First-Order Estimates

    Reliability Analysis
    Fundamental Analysis
    Reliability Bounds for Structural Systems
    Application of Structural Codes on Safety
    Limit State Functions
    Characteristic Value of Basic Variables
    Stochastic Modeling
    Mechanical Modeling
    Mechanical Model and Reliability Coupling
    Complexity of Mechanical Model and Reliability
    Stochastic Process
    Gaussian Process
    Barrier Crossing
    Peak Distribution
    Fatigue Reliability
    SN Curve and Fatigue Damage
    Estimate of Cumulative Damage
    (Linear Damage Hypothesis)
    Design SN Curves
    Fatigue Assessment Using Discrete Wave Approach
    Simplified Fatigue Assessment Method
    Spectral Fatigue Analysis of Offshore Structures
    Short-Term Fatigue Damage
    Uncertainties in Fatigue Reliability
    Lognormal Format for Fatigue Reliability
    Tubular Joints: Experimental and Analytical
    Fatigue Life Estimate of Tubular Joints
    Behavior of T Joints under Axial Loads
    T Joint under out-of-Plane Bending
    K Joints under Axial Loading

    Risk Assessment
    Quantified Risk Assessment
    Hazard Identification
    Hazard and Operability
    HaZop Study Process
    Parameters for HaZop Study
    HaZop: Advantages and Limitations
    Logical Risk Analysis
    Failure Mode and Effect Analysis
    Fault Tree and Event Tree
    Fault Tree Analysis
    Event Tree Analysis
    Cause–Consequence Analysis
    Decision Trees
    Consequence Analysis
    Limitations of QRA
    Risk Acceptance Criteria
    Risk and Hazard Assessment
    Hazard Identification
    Selection of Failure Scenarios
    Fire and Thermal Radiation
    Selection of Damage Criteria
    Risk Picture
    Individual Risk
    Societal Risk
    Risk Assessment and Management
    Example Problem of Risk
    Assessment: Offshore Triceratops

    Model Exercise Papers



    Srinivasan Chandrasekaran is a professor in the Department of Ocean Engineering, Indian Institute of Technology Madras, India. He has more than 25 years of teaching, research, and industrial experience. By invitation of the Ministry of Italian University Research, he was a visiting fellow to the University of Naples Federico II, Italy, for a period of two years. He has published approximately 140 research papers. He is a member of many national and international professional bodies and has delivered many invited lectures and keynote addresses at international conferences, workshops, and seminars organized in India and abroad.

    "… one of its kind… links both risk and reliability with application examples to offshore structures … an essential reference book for practicing engineers in offshore engineering."
    —Professor Arvind Kumar Jain, Department of Civil Engineering, Indian Institute of Technology Delhi, India

    "This is a great book on the general subjects of structural reliability and risk assessment for off-shore structures. … a comprehensive presentation of the art and science of the assessment of off-shore structure system reliability."
    —Shen-En Chen, University of North Carolina at Charlotte, USA

    "… gives a basic understanding of all topics related to reliability and risk assessment of offshore structures using probabilistic methods. Examples dealing with Mathieu’s stability and responses to high sea waves and seismic excitation of TLP tethers enable easy understanding of the fundamental concepts. I strongly recommend this book as an essential reference book for academicians, researchers, engineers and professionals in oil and gas industry, as it is the priority now to extend the life of existing platforms based on scientific calculation of reliability leading to accurate prediction of structural integrity."
    —Professor Kurian V. John, Universiti Teknologi Petronas, Malaysia

    "…there is much to recommend in this book. In addition to basic applicable theory and procedures for which the book could serve as an appropriate educational tool for the beginner and intermediate reader, there are also more than a few applications particular to offshore structures that are interspersed within the text that appear to serve well to hold the reader’s interest in a sustained manner. I am, therefore, happy to recommend this book not only to students of the subject, but also to researchers and engineers. Readers should find it a very good resource of useful information all in one place, not only to supplement their current knowledge, but also to revisit subsequently as needed."
    Journal of Ocean Engineering and Marine Energy, March 2017