Subsea Asset Integrity Matthew Kennedy matthew.kennedy@1csi.uk 1
Typical Asset Integrity Cycle Mitigation, Intervention and Repair. Risk Assessment and IM Planning Support Engineering support during anomaly remediation works (e.g. review and selection of most suitable inspection methods or remedial options) Maintenance of anomaly management systems e.g. Coabis (component orientated anomaly based inspection system) Management of 3rd party contractors Act Plan Risk based assessment (RBA) Risk based inspection planning (RBI) Development and maintenance of a IM programme (IMR - Inspection, Maintenance & Repair) Development and implementation of planned maintenance routines (PMR) Integrity Assessment Support Gathering and review of inspection, monitoring and testing data Identification and assessment of anomalies Corrosion assessment Check Do IM Implementation Support Preparation of inspection workpacks Engineering support during inspection campaigns Maintenance of work orders in computerised maintenance management system Annual integrity assessment Pipeline status information preparation for HSE Fitness for service assessment (DNV-RP-F101) 2
Subsea DRT: Digital Radiographic Testing Objective: General assessment of pipeline e.g. corrosion type flaw information without removing concrete or interrupting production? Typical scenario: 20 pipeline coated with 105mm of concrete Field Joint section of the pipeline (unknown coating material) Pipeline submerged in sand Requires logistical management of: Diver or ROV deployable solution (vessels, divers, ROVs dredgers etc.) Radioactive Source plus corresponding equipment 3
Subsea DRT: Digital Radiographic Testing 2D flaw measurement (length x width), through 95mm equivalent steel Diver or ROV deployable solution Source (Ir192) Test piece Digital detector plate 4
Subsea DRT: Digital Radiographic Testing (Rigid & Flexible) Results: Corrosion free rigid Flexible riser Side End Corrosion evident 5
Subsea UT: Ultrasonic Testing (Pulse Echo/Phased Array) Automated UT scanner ROV AUV De-burial Prepare Subsea pipework Ultrasonic hi-res image 6
Flexible pipe integrity management Global & local compliance guidance Integrity assessment (API RP 17B, API RP 17L1/L2) Anomaly identification and assessment PA-11 ageing assessment (API 17TR2) Dissection and analysis support Lifetime extension assessment (Norsok Y-002) Rilsan Polyamide 7
Wind Turbine Monopile - Subsea Examination 8
Wind Turbine Monopile Subsea Examination 9
Typical Asset Integrity Cycle Mitigation, Intervention and Repair. Risk Assessment and IM Planning Support Engineering support during anomaly remediation works (e.g. review and selection of most suitable inspection methods or remedial options) Maintenance of anomaly management systems e.g. Coabis (component orientated anomaly based inspection system) Management of 3rd party contractors Act Plan Risk based assessment (RBA) Risk based inspection planning (RBI) Development and maintenance of IM programme (IMR Inspection maintenance & repair) Development and maintenance of planned maintenance routines (PMR) Integrity Assessment Support Gathering and review of inspection, monitoring and testing data Identification and assessment of anomalies Corrosion assessment Check Do IM Implementation Support Preparation of inspection workpacks Engineering support during inspection campaigns Maintenance of work orders in computerised maintenance management system Annual integrity assessment Pipeline status information preparation for HSE Fitness for service assessment (DNV-RP-F101) 10
THANK YOU!