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• Download the free-to-download AOG 2019 app
• Search for ‘AOG 2019’ to find the app.
• Connect and network with peers in the oil and
gas industry at this year’s event
• Plan your day by selecting which sessions you
want to attend.
• Don’t forget hashtag #AOG2019”
#AOG 2019
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Structural Integrity Management - Through the
lifetime of an asset
Ruth Baker
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Fit for
Purpose
for the
remaining
lifetime
Structural Integrity
3
Semi
Submersible
with Fatigue
Crack
Rottnest
Bridge
Failure
Progressive
Failure
123 deaths
112 year old
structure
3 injuries
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The Asset Life Cycle
4
Acquistion
Concept Definition
Preliminary Design
Detailed Design
Construction
Commissioning
Operational Readiness
Use & Maintenance
Operations
Maintenance
Integrity Management
Renewal & Adaptation
Improvement
Modifications
Life extension
Disposal
Decommissioning
Disposal
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Percentage Costs through out the Life Cycle
Source: AS/NZS 4536:1999 Life Cycle Costing – An Application Guide5
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SIM and OPEX
6
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Structural Integrity Management
•Managed System
For Archival /
Retrieval of Data
• Evaluate Fitness for
Purpose / Structural
Integrity
• Develop Remedial
Actions
• Inspection
Philosophy
• Inspection Strategy
• Criteria for
Inspection
• Work Scopes for
Inspection
Activities
• Execution to obtain
quality Data
Sources: API RP 2SIM & ISO 19902 Figure A.23.1-1
DESIGNUPDATE
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Structural threats…
CorrosionCoating
BreakdownConcrete Cracking Fatigue Cracking
Lack of Inspectability
Overload from Upgrades / Additions
Accidental EventsDepletion of
Cathodic Protection
Foundation Settlement/
Erosion
Revised Met-ocean Data
8
Understand and quantify risks to a structure:
Influence Design
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Assessing Risk…
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Determine the threats to the
structure.
Assessing Risk.. to Influence Design
10
Identify Assess Respond
Review all available data to fully
assess the risks the threats pose.
Solve critical operational problems,
either by mitigating or by altering
the basis of design.
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Align Design with Operational Strategies
11
Drive
Align• Ensure final design
supports key
structural integrity
management
strategies
Evaluate• Develop structural
analysis models to
support fitness for
service evaluations
Inspect• Select risk based or
prescriptive
inspection planning
strategy
• Baseline inspections
Monitor• Identify monitoring
required throughout
lifetime
• Baseline
measurements
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SIM to Support Life Extension
12
Determine As Is Condition
Initiate Life Extension
Structural Reassessment
Identify Modifications
NOY
ES
Modifications
Feasible?
Integrity Acceptable?
YESDocument / Implement
NO
Stop & Decommission at
End of Life
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SIM Through the Lifetime of an Asset
13
Fit for
Purpose for
the remaining
lifetime
High
commitment of
life cycle costs
by the end of
EPC
Understand the
risk to your
structure
during all
phases of life
Mitigate the
risks safely and
cost effectively
Assess
Operations
during Design
Decrease
unplanned
shutdowns &
rationalise IM
costs
Adds value
during Life
Extension &
Decommission
ing
Assessment
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Decommissioning
14
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Thank you.