Marine & Offshore
Offshore platforms, FPSOs, and marine vessels operate in the most hostile physical environments in industrial engineering. Saltwater exposure, wave-induced fatigue loading, cathodic protection management, and the logistical complexity of remote inspection create integrity challenges fundamentally different from onshore facilities. Classification society requirements impose structured survey regimes with strict deadlines — missed class surveys can result in insurance withdrawal or operational shutdown.
Applicable Standards
Critical focus areas
- Hull and structural corrosion monitoring
- Mooring system integrity and fatigue tracking
- Splash zone and submerged zone protection
- Classification society survey compliance (DNV, ABS, Lloyd's)
- Cathodic protection management and anode consumption tracking
Key Challenges
- Remote location logistics and ROV-dependent inspection access
- Extreme environmental loading creating multi-mode fatigue
- Subsea equipment monitoring with limited data return
- Multi-discipline integrity (structural + process + marine) in one program
Active damage mechanisms
Reliatic ships with a pre-loaded damage mechanism library for Marine & Offshore. Each mechanism is linked to its relevant inspection techniques, examination intervals, and regulatory acceptance criteria.
Structural Fatigue (SCF Calculations)
Cyclic wave-induced loading at tubular joints, brace connections, and deck structure causing fatigue crack initiation and propagation — managed through S-N curve analysis and stress concentration factors.
Cathodic Protection (CP) Degradation
Sacrificial anode consumption and impressed current system degradation allowing localized corrosion on submerged steel structures when protection potentials fall outside the -800mV to -1100mV range.
Marine Growth and Under-Deposit Corrosion
Bio-fouling creating oxygen differential cells on submerged structures, and under-deposit pitting corrosion at marine growth attachment points on risers, caissons, and J-tubes.
Mooring System Degradation
Chain wear, rope creep, and connector fatigue in spread mooring and turret systems — where single-line failure can cascade into progressive mooring failure and vessel drift-off.
Splash Zone Corrosion
Accelerated material wastage in the tidal and splash zone where alternating wet-dry cycles, high oxygen availability, and wave impact create corrosion rates 5-10x higher than submerged or atmospheric zones.
Platform Configuration for Marine & Offshore
Outcome
Maintain class compliance across all survey regimes while optimizing inspection campaigns for remote offshore assets, reducing vessel mobilization costs through risk-prioritized scope planning.