Maintenance and Integrity of Offshore Structures
Maintenance and Integrity of Offshore Structures
Course Focus: Ultrasonic Peening, Fatigue Inspection & Life Extension LETS Global AB | Life Extension of Technical Structures Registered Office: Stockholm, Sweden | Org. No. 559546-7993 © 2025 LETS Global. All rights reserved.Course Overview
This course provides engineers, inspectors, and asset managers with an advanced understanding of how maintenance strategies, ultrasonic peening, and inspection programs work together to extend the operational life of offshore assets. Participants learn to identify fatigue-prone details, evaluate condition, apply modern peening technologies, quantify life extension, and integrate these practices into a risk-based maintenance strategy.Target Audience
This course is designed for professionals involved in the design, operation, inspection, and life extension of offshore and marine structures, including:- Structural and offshore engineers
- Asset integrity and maintenance engineers
- Inspection engineers and NDT specialists
- Asset managers and technical authorities
- Engineering consultants and project managers working with ageing offshore assets
- Operators and contractors involved in life extension, brownfield modifications, and sustainability initiatives
Required Qualifications / Background
- Technical background in engineering or a related discipline (structural, mechanical, materials, or offshore engineering preferred)
- Basic understanding of offshore structures, welding, and inspection practices
- Familiarity with fatigue, corrosion, or asset integrity concepts is beneficial but not mandatory
Course Duration & Format
Duration: 3 days Format:- Instructor-led training (classroom or virtual)
- Combination of lectures, technical discussions, and case studies
- Optional practical demonstration or workshop on ultrasonic peening
Day 1 — Offshore Structural Integrity & Fatigue Management
1. Offshore Structure Integrity Fundamentals
- Offshore structure types
- Environmental loads
- Corrosion & degradation mechanisms
- Interaction between corrosion protection and fatigue
2. Fatigue Damage Mechanisms
- Stress concentration at welded joints
- Crack initiation vs. propagation
- S–N curves
- Fatigue-critical structural details
3. Regulatory & Integrity Frameworks
- DNV-ST-F101, DNV-RP-C203, API RP 2A, ISO 19900
- Inspection requirements
- Fitness-for-Service methods
4. Case Studies of Offshore Fatigue Failures
Day 2 — Ultrasonic Peening & Advanced Inspection Techniques
1. Maintenance Methods for Fatigue Life Enhancement
- Grinding, TIG dressing, shot peening
- Ultrasonic Impact Treatment (UPT)
2. Ultrasonic Peening Principles & Mechanisms
- Ultrasonic vibration process
- Residual stress improvement
- Microstructure refinement
3. Ultrasonic Peening in Offshore Applications
- New vs. in-service welds
- Life extension factors
- Application challenges
- Integration with corrosion protection
4. Inspection Techniques Before and After Peening
- MPI, UT, phased array, TOFD
- Toe radius measurement
- Residual stress confirmation
- Documentation and reporting
5. Practical Demonstration / Workshop (Optional)
Day 3 — Life Extension, Risk-Based Maintenance & Asset Management
1. Engineering Assessment for Life Extension
- Remaining Useful Life (RUL) calculations
- Fracture mechanics
- Updated S–N curves
- Reliability assessment
2. Integrity Management & Inspection Planning
- Condition-based maintenance
- Risk-Based Inspection (RBI)
- Digital twins and monitoring
3. Life Extension Strategies
- Treatment vs. repair vs. replacement
- Economic considerations
- Multi-year asset integrity planning
4. Sustainability & Carbon Footprint Reduction
- Reduced material replacement
- CO₂ savings
- ESG alignment
5. Case Studies & Group Exercises
Learning Outcomes
- Identify fatigue-critical areas in offshore structures
- Select appropriate inspection methods
- Understand the mechanisms and benefits of ultrasonic peening
- Perform fatigue life extension assessments
- Develop inspection and repair strategies
- Quantify environmental benefits of life extension