Ocean Engineering
Ultrasonic NDT for Offshore Structures and Marine Infrastructure
Offshore platforms, subsea installations, port facilities, and marine vessels operate in corrosive saltwater environments with extreme structural loads that demand continuous integrity assurance. Ultrasonic testing is essential for detecting fatigue cracks, corrosion wastage, and weld defects in steel jacket structures, pile foundations, risers, and ship hulls throughout fabrication, installation, and service life. CCNDT provides robust ultrasonic instruments and phased array systems rated for marine and offshore inspection environments.
Platform Jacket & Node Inspection
Steel jacket platform tubular joints and nodes are among the most fatigue-critical welded structures in any industry, with complex geometry creating stress concentrations at brace-to-chord intersections. Ultrasonic phased array inspection maps internal weld profiles and detects fatigue cracks initiating at weld toes, root gaps, and cast node geometries. Flooded member detection using ultrasonic methods identifies water ingress into sealed tubular members, indicating through-thickness cracking.
- Tubular joint and cast node weld phased array inspection
- Fatigue crack detection and sizing at brace-to-chord intersections
- Flooded member detection for through-thickness crack identification
- Underwater and topside inspection capability with marine-rated equipment
Pile Foundation & Mooring System Assessment
Driven piles, suction caissons, and mooring chain links form the foundation and station-keeping systems for fixed and floating offshore structures. Ultrasonic thickness measurement monitors external corrosion and internal scour-related wall loss in submerged pile sections. Chain link inspection detects wear, deformation, and cracking at interlink contact points that accumulate over years of cyclic loading in harsh sea states.
- Submerged pile wall thickness monitoring for corrosion assessment
- Suction caisson weld and skirt plate inspection
- Mooring chain link wear and crack detection
- ROV-compatible ultrasonic probes for deep-water inspection
Ship Hull & Marine Structure Fabrication
Ship hulls, deck structures, and marine equipment fabrication involve extensive welding of high-strength steels and aluminum alloys. Ultrasonic testing verifies weld quality during construction and monitors fatigue and corrosion damage during service. Port infrastructure including quay walls, jetties, and underwater concrete structures also benefit from ultrasonic condition assessment for maintenance planning and life extension decisions.
- Hull butt weld and fillet weld phased array inspection per classification society rules
- Ballast tank and cargo hold corrosion thickness gauging
- Propeller shaft and rudder stock ultrasonic examination
- Port infrastructure concrete and steel condition assessment
Talk to Our NDT Engineers
Tell us about your inspection target and we will recommend the right ultrasonic solution.