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© Det Norske Veritas AS. All rights reserved.
DNV Software
8 April 2010
2
Management of Structural Integrity (SIM)
What do the standards state?
SIM Process
Changes over the life time
SIM Drivers
“SAFE” Operation (incl. examples)
Summary
© Det Norske Veritas AS. All rights reserved.
DNV Software
8 April 2010
3
Structural Integrity Management - Norsok N-005
”The Operator shall throughout the lifetime of the installation ensure that the load bearing structuresare suitable for the intended purpose.
The Operator shall monitor the condition of the operated offshore installation in a systematicmanner.
This may include development of an overall philosophy and strategy for conditionmonitoring, establishing in-service inspection systems and long term inspection programs,In-service inspection planning, offshore execution, data logging, evaluation and assessment,implementation of repair and mitigation measures, emergency preparedness, etc.”
© Det Norske Veritas AS. All rights reserved.
DNV Software
8 April 2010
4
Structural Integrity Management - Norsok N-006
Assessment of structural integrity of existing offshore load-bearing structures
Guidelines on how to document integrity of structures being operated beyond original design requirements The documented service life is expired,
The original design requirements are no longer fulfilled;e.g. the air gap is reduced to less than what was required due to reservoir subsidence,
Major modifications or operational changes,
Increased knowledge e.g. revised metocean data,
Damages inflicted to the platform structure,
Reduced structural capacity due to degradation mechanisms like fatigue or corrosion.
© Det Norske Veritas AS. All rights reserved.
DNV Software
8 April 2010
5
Structural Integrity Management - ISO 19902
Chapter 25:”Structure reuse”
Chapter 23:”In-service Inspection and Structural Integrity Management”
”In-service inspection is an integral part of structural integrity management, which is an ongoing process for ensuring the fitness-for-purpose of an offshore structure or group of structures.”
”Essential aspects of structural integrity management are the validity, extent and accuracy of the structure'sdata and inspection history. Accordingly, records of all original design analyses, fabrication, transportation,installation (including piling) and in-service inspections, engineering evaluations, repairs, and incidents shall be retained by the owner for the life of the structure and transferred to new owners as necessary.”
© Det Norske Veritas AS. All rights reserved.
DNV Software
8 April 2010
6
Structural Integrity Management - ISO 19904
Section 18.2 –Structural Integrity Management System Philosophies
”The owner shall ensure that suitable arrangements are in place for monitoring and maintaining the integrity of a floating structure throughout its life cycle. Such arrangements include…”
”The purpose of the SIM system is to provide a formal process for ensuring the integrity of the structure throughout its intended design service life on a fit-for-purpose basis.”
© Det Norske Veritas AS. All rights reserved.
DNV Software
8 April 2010
7
Structural Integrity Management - API RP 2SIM
”SIM is a process for ensuring the fitness for purpose of an offshore structure from installation through to decommissioning.
The process is a rational means for understanding the effects of degradation, damage, changes in loading, accidental overloading, changes in use, life extension, and the evolution of offshore design practice.
SIM provides a framework for the damage evaluation, fitness-for-purpose assessment, inspection planning, maintenance, and repair of a platform or group of platforms.”
© Det Norske Veritas AS. All rights reserved.
DNV Software
8 April 2010
8
ProgramStrategyEvaluation
Detailed work scopes for inspection activities and offshore execution to obtain quality data
Data
Managed system for archive and retrieval of SIM data and other pertinent records
Evaluation of structuralintegrity and fitness forpurpose; developmentof remedial actions
Overall inspectionphilosophy & strategyand criteria forin-service inspection
SIM Process
Structural Integrity Management Process
© Det Norske Veritas AS. All rights reserved.
DNV Software
8 April 2010
9
Changes in a structure’s lifetimeStructure Integrity Management
© Det Norske Veritas AS. All rights reserved.
DNV Software
8 April 2010
10
SIM Software Drivers
Large portfolio (jackets, helidekcs, bridges, flares….)
Integrity Overview (regulation, life extension)
Consistent data management (work-flow support, common reporting)
Resource effectiveness (downsized, reorganised, outsourced)
Compliance with rules and regulations
© Det Norske Veritas AS. All rights reserved.
DNV Software
8 April 2010
11
Structure Integrity Management Vision
Change Management database which integrates the following functions:
Survey changes (detection, registration)
Assess changes (analysis, mitigation)
F ind information (documents, data)
Ensure integrity (status, condition)
© Det Norske Veritas AS. All rights reserved.
DNV Software
8 April 2010
13
Inspection Results
SIMS Toolboxes:
• SIMS-s (Survey)• SIMS-a (Analyse)• SIMS-f (Factfind)• SIMS-e (Ensure)
“SAFE” in motion (example)
FE AnalysesModels
DetailedAggregated
Integrity Status
How to organize information ?
Where to inspect ?
When to inspect ?
What inspection method ?
Work packages
InspectionPlans
Inspection Planning
Inspectionhistory
How to organize information ?
Where to inspect ?
When to inspect ?
What inspection method ?
© Det Norske Veritas AS. All rights reserved.
DNV Software
8 April 2010
14
Model hierarchy:Level 1: Facility
Level 2: Area (jacket, topside, flare, bridge, helideck…)
Level 3: Group (Access, decks, mainStruc, Caissons…)
Level 3*: 3D model support (jacket, flare, topside)
Level 4: Item (handrail, stair, brace….)
Level 5: Part (weld, plate, bolt….)
Asset Model Representation
All information (attributes, documents, work-packages, inspections, findings, analysis etc) are linked to the Asset model representation
© Det Norske Veritas AS. All rights reserved.
DNV Software
8 April 2010
15
Survey changes (detection, registration)Manual creation of new inspections
© Det Norske Veritas AS. All rights reserved.
DNV Software
8 April 2010
16
Survey changes (detection, registration)Bulk import of new inspections
© Det Norske Veritas AS. All rights reserved.
DNV Software
8 April 2010
17
Survey changes (detection, registration)Define annual campaigns and work-packages
© Det Norske Veritas AS. All rights reserved.
DNV Software
8 April 2010
18
Survey changes (detection, registration)Include inspections in campaigns and work-packages
© Det Norske Veritas AS. All rights reserved.
DNV Software
8 April 2010
19
Survey changes (detection, registration)Inspection reports for campaigns and work-packages are automatically generated
Job summary
Job specification
Job reporting
© Det Norske Veritas AS. All rights reserved.
DNV Software
8 April 2010
20
Survey changes (detection, registration)Execute inspections and record findings
© Det Norske Veritas AS. All rights reserved.
DNV Software
8 April 2010
22
Assess changes (analysis, mitigation)Define asset changes and link it to CAE models
© Det Norske Veritas AS. All rights reserved.
DNV Software
8 April 2010
23
Assess changes (analysis, mitigation)Define and manage CAE models
Model modifications required
© Det Norske Veritas AS. All rights reserved.
DNV Software
8 April 2010
24
F ind information (documents, data)Store and manage documents of all formats
© Det Norske Veritas AS. All rights reserved.
DNV Software
8 April 2010
25
F ind information (documents, data)Ensure quick access to key information
© Det Norske Veritas AS. All rights reserved.
DNV Software
8 April 2010
26
Ensure integrity (status, condition)Finding Impact visualisation
© Det Norske Veritas AS. All rights reserved.
DNV Software
8 April 2010
27
Ensure integrity (status, condition)Aggregated and detailed view of Finding impact status
© Det Norske Veritas AS. All rights reserved.
DNV Software
8 April 2010
28
Ensure integrity (status, condition)Reports and statistics
© Det Norske Veritas AS. All rights reserved.
DNV Software
8 April 2010
29
“SAFE Operation” Summary
Structure Integrity Management Software
Challenges
Solution - Change Management
Benefits
Access to information, data lost, data quality, data gathering costs, aging structures,……
•Reduce cost through quality and consistent reporting•Timely response to integrity issues•Ensure secure and prompt access to all relevant data•Improve knowledge sharing across stakeholders•Secure regulatory compliance •Minimise risk exposure and reduce failure frequency•Improve organisational efficiency •Extend service life