asset integrity management – a risk based approach - roy_van_elteren.pdf · asset integrity...
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DNV GL © 2013 SAFER, SMARTER, GREENERDNV GL © 2013
Asset Integrity Management – a risk based approachTurning Policy into operational practice
5th February 2014Pipeline Integrity Management Forum 2014
Roy van ElterenHead of Section Gas Infrastructure & Transport
DNV GL Oil & Gas
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Outline
� Introduction to DNV GL Oil & Gas;
� Asset Management Policy
� Operational practice
– threat Identification
– Risk prioritization
– Inspection planning
– Respond & process improvement
� Questions
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DNV GL Group
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DNVGL: A new company with 150 years of experience
DNV and GL Noble Denton joined forces in September 2013. We’ve drawn
upon our proud heritages to create:
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� Greater technical expertise
� Enhanced innovation capabilities
� Extended global reach
� An integrated service portfolio
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An integrated approach across the asset lifecycle
Our common way of working and global sales model delivers industry
best practice across the asset lifecycle. Core service areas include:
� Risk management advisory
� Technical advisory
� Noble Denton marine assurance &
advisory
� Technical assurance
� Certification and verification
� Inspection and quality assurance
� Offshore classification
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Serving the diverse needs of the entire oil & gas value chain
Exploration & Production
Transport &
DistributionDelivery &
Use
Enabling Operational Excellence
Verification & Certification Services
Technology Innovation Services
Energy Business Decision Support
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Asset Management Policy
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Asset Management Policy
� Challenges for Asset owners/pipeline Operators;
– Prolong lifetime of Assets in operation
– Public awareness
– Pressure from authorities
– Accidents v.s near misses
– Accommodate Renewables & Unconventionals?
– Compliance to new standards and regulation
� Operators are in the spotlight: “Show me you are in control”.
� Creating an “umbrella” for all the (inter)national- and company standards
– Example; PAS55/ISO55000
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ISO55000 : 2014Assets
PAS55/ISO55000 overview
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PAS55 : 2004Physical Infrastructure Assets
PAS55 : 2008Physical Assets
The IAM Tool
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PAS 55 Improvements with ISO 55000
� Worldwide recognition in comparison to U.K.
based PAS55
� Structure of Asset Management is better
acknowledging what large companies do and
want (ownership; asset management; service
provider)
� It puts emphasis on involvement of top
management and leadership
� Includes finance and accounting requirements
� Risk based decision has a prominent place in the
overall asset management system
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PC 251 Structure
ISO 550000
ISO 9001
quality
ISO 14001 environment
ISO 31000 risk
ISO 27000 inform.security
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Structured approach
Links to roles in the organization
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Operational areas
Asset Strategy
Asset Lifecycle Management
Asset Owner
Asset Manager
Service Provider
Performance indicators• Business performance
• Asset performance• Benchmarking
Decision support data• Probability, impact, risk• Cost data• Scenario’s, alternatives
High quality asset data• Fixed asset data• Condition / health• Assessment knowledge
BusinessStrategy
Asset Management Policy
Strategic Asset Management
Plan
Asset Management Plans
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Practical build up: from asset details to company criticality
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Networks
Facilities /Pipelines
Components
Parts
Criticality
Failure modes
Asset Health
Station configuration
Netwerkconfiguration
Maintenance/Performance
Data
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PAS55/ISO55000 in practice
� Benchmark of company procedures vs standards
� Establishing Asset Register
� Asset Condition Assessment
� Threat Identification
� Risk prioritization
� Selection of Inspection methods
� Maintenance planning/re-inspection
� Constructing Asset Management plans
� Risk evaluation cycle
� Integrity Management Systems software support
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Asset Integrity in Operation
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Risk based Asset Integrity in Operation
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Identify
Prioritize
Plan & Select
Respond
Improve
• Threats• Failure Mechanisms
• Risk Assessment• Prioritize risks
• Plan Inspections• Appropriate Methods
• Quality Management• Integration of Data
• Continuous improvement• Efficient processes
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Identify threats
� All threats to pipeline/asset integrity shall be considered
� Consider future changes in operating conditions that
may introduce new degradation mechanisms
(e.g. pressure fluctuations, gas quality)
� Guidance given by for example ASME B31.8S “Managing System
Integrity of Gas Pipelines”:
– Time-dependent (e.g. external corrosion, internal corrosion, stress corrosion
cracking)
– Stable (e.g. manufacturing, welding, equipment related defects)
– Time-independent (e.g. third party damage, incorrect operational procedure,
weather related and outside force)
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Identify
Prioritize
Plan & Select
Respond
Improve
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Inspection planning and selection
� Inspection methods can be divided mainly into inline
inspection (ILI) methods and aboveground surveys to be
used in assessment methodologies.
� About 40% of the gas pipelines worldwide cannot be
inspected inline.
� Assessment methods:
– External Corrosion Direct Assessment (ECDA)
– Dry Gas Internal Corrosion Direct Assessment (DG-ICDA)
– New developments in ILI technology
� Combining inspection results to increase accuracy of
defect growth prediction-> leading to effective
re-inspection
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Identify
Prioritize
Plan & Select
Respond
Improve
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Prioritize; risks
� Scope: Rank pipelines based on probability of
failure and failure mode for external corrosion
� Build a failure model to determine the failure frequency of a defect
based on the:
– leak vs. rupture (ASME B31G)
– Time to fail for a single defect
– Failure frequency of a defect (Monte Carlo simulation)
– Based on data from ILI-runs, the ECDA program, PIMS, international
databases and from expert judgment
� Leading to a ranking tool to prioritize inspections based on risk:
– Incorporate consequence factors (e.g. population density, environmental
damage, security of supply etc.)
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Identify
Prioritize
Plan & Select
Respond
Improve
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Respond; Inspect and repair
Identify
Prioritize
Plan & Select
Respond
Improve
External corrosion (MIC)
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Process Improvement; (P)IMS
� Scope: Development and Implementation of
a (Pipeline) Integrity Management System
� Our contributions: “Getting a company ready to use PIM software”
– Asset Management Policy development (Gap)
– Implementing company procedures
– Training company experts
– Functional specification customer requirements
– Integrity Management support (Risk, inspection)
� Supported by a unique Software package
� Data Quality & data management is key!
� First get Asset Integrity procedures in place.
Identify
Prioritize
Plan & Select
Respond
Improve
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DNV GL © 2013
SAFER, SMARTER, GREENER
www.dnvgl.com
Thank you for your attention!
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