Subsea Infrastructure Integrity Assessment

Service

Critical marine infrastructure cannot be managed solely through periodic visual inspection or reactive intervention. Asset integrity requires structured assessment, quantitative data acquisition and traceable engineering evaluation based on defined assessment criteria, documented assumptions and stated limitations.

We provide Subsea Infrastructure Integrity Assessment services designed to support operators with defensible technical evidence for maintenance prioritization, fitness-for-service determination and remaining life estimation.

Our methodology integrates:

Risk-informed inspection planning
High-resolution subsea data acquisition using instrumented ROV platforms
Metrology-grade 3D baseline modelling
Structured anomaly classification, severity ranking and linkage to governing degradation mechanisms

This framework supports integrity management decisions across the full asset lifecycle — from baseline establishment to degradation monitoring and life-extension evaluation.

Deliverables

We support asset operators with:

Baseline Condition Establishment

Creation of a documented structural condition baseline for submerged assets, including dimensional capture and defect mapping with traceable measurements.

Anomaly Identification & Engineering Assessment

Detection, classification and quantitative/qualitative evaluation of structural discontinuities (corrosion, cracking, deformation, scour, coating breakdown, connection distress, etc.) with severity ranking against defined criteria and evaluation of structural and operational implications.

Fitness-for-Service (FFS) Assessment

Engineering evaluation aligned with recognized frameworks (e.g., API 579-1/ASME FFS-1 or equivalent structural assessment standards), using explicit assumptions, input data and acceptance criteria.

Remaining Life Estimation

Projection of degradation progression based on observed condition and measurable parameters, with stated basis, assumptions and assessment boundaries.

Operational Risk Assessment

Short- and long-term risk evaluation considering structural condition, degradation mechanisms, operational exposure and consequence of failure.

Structured Remedial Actions

Mechanism-based corrective and mitigation measures, prioritized by integrity risk and consequence, supporting defensible maintenance planning.

Repeatable Inspection Framework

Structured and reproducible inspection protocol enabling condition trending and degradation rate tracking.

Engineering-Grade Reporting

Documentation suitable for technical and regulatory review, including traceable datasets, dimensional extracts, clearly stated methodology and assessment assumptions.

Technical Framework

Our technical methodology integrates:

Risk-informed inspection scope development
Identification and closure of critical data gaps required for defensible integrity evaluation
Project-specific Work Method Statements (WMS) and HSE documentation
Multi-sensor subsea data acquisition (optical, acoustic and spatial measurement systems)
Structured anomaly classification and documentation logic
3D photogrammetric and spatial modelling for spatially referenced baseline creation
Data packages structured for follow-up assessment and comparative re-inspection

This framework ensures technical depth, traceability and reproducibility.