IMR Best Practice - Practical Lessons from a Decade of Subsea IM. John MacDonald & Dharmik Vadel 11 March 2015

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2 IMR Best Practice - Practical Lessons from a Decade of Subsea IM John MacDonald & Dharmik Vadel 11 March 2015

3 roduction ackground Early 2000; applied design tools to look at integrity of SCR Strakes Expanded to cover all in-water equipment ifferent Approach Engineering came first Use available data and management Typical engineering reports Wrapped the process around it all oday s Objective To look at some practical lessons from a decade of practice

4 mplex system Straightforward Approach lan o heck ct Strategy Reporting and Update Assess and Respond Documentation Integrity Plan Execution

5 mplex system Simple Approach egrity Management ata gathering/ retention isk Assessment M Plan nspection procedures PIs ife Extension orrosion Assessment Inspection Repair Maintenance ROV GVI Pipeline positioning, spanning Strake cleaning FlexJoint Inspection Pod/Choke change out CP survey Specialty tooling

6 n his is an Engineering Function Risk Assessment Safety Case Prescriptive Front End consultancy Greenfield Projects Brownfield Projects ocumented list of activities where each action confirms a barrier and no ew hazards O&M Support Late life management ased on the intended design access to design intent required! equires expertise of the system and relevant failure modes est completed at the end of the project phase Consulting & Front End Design & Construct IM Services DFIO IM process Asset IM plan Hook-Up & Commission Baseline As-built Operate Risk Assessment Inspection procedures Inspection/support KPIs Direct assessment IM Plan Anomaly management Life Extension Corrosion Defect Assessment Maintenance Repair management IM Software Specialty tools Decommissio Recordsfor transfer Sale due dili survey

7 pection VI is cornerstone of most IM plans. pproach: Understand what information is needed and how to get it Establish limits or guides before hand any of the threats are not visually nderstood

8 seline Inspections Field Joint Insulation Pipeline Baseline inspections identify when system deviates from design

9 seline Inspections Nom WT, Min Loss Rate Nom WT, Avg Loss Rate Nom WT, Max Loss Rate Min WT, Min Loss Rate Min WT, Avg Loss rate Min WT, Max Loss Rate Manufacturer Specified minimum WT = 0.180" Previously accpeted minimum WT = 0.172" Time (Yrs) Baseline inspections improve MTTF calculations

10 nding to Maintenance and Repair ore than video data gathered allows remediation before extensive dama

11 derstand Operations

12 y Performance Indicators ain insight to system behavior with existing information Vessel re-positioning for fatigue GPS data to indicate mooring changes 550 Vessel Relocation Stations vs. Date (Mooring Link Counts) 500 Station 1 Station 4 Station Station 2 Station 3 Neutral Station Mooring Link Count Year1 Year2 Year3 Date Mooring 1 Mooring 2 Mooring 3 Mooring 4

13 mbined KPI and modelling bining the available data with numerical dels adds another dimension Bending Moment (kips-ft) Time (sec) Measured Bending Stuck Analysis

14 nding forward Subsea Control System KPIs

15 Data ehicle Data -ADR 79/01 & 79/ ) nternet of things he future of offshore is moving ubsea HIPPS Pumping Separation Seabed IOR/EOR

16 nclusions he approach to Subsea IM should be straightforward. lanning and execution requires architects and craftsmen. nce below the waterline there is an increased reliance on data and ondition monitoring. ata and inspection combined are a powerful tool in support of aintenance and repair decisions. he goal of IM is to facilitate confident decisions which ensure safe and fficient operations.

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18 ferences &C Technilogies AUV Pipeline Inspection Webinar ; August 27 th 2014 ttp:// rederoshaw ThermoFloPolyurethane Thermal Insulation Systems ; etrieved March 2015 from ttp:// MS Effects of Subsea Processing on DeepwaterEnvironments he Gulf of Mexico ; Multiple Authors, May 2008