Heidi Johansen8 April 2010

DNV Software

"SAFE" Operation with Asset Integrity Management software

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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

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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.”

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8 April 2010

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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.

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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.”

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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.”

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DNV Software

8 April 2010

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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.”

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8 April 2010

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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

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DNV Software

8 April 2010

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Changes in a structure’s lifetimeStructure Integrity Management

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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

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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)

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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 ?

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8 April 2010

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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

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Survey changes (detection, registration)Manual creation of new inspections

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Survey changes (detection, registration)Bulk import of new inspections

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Survey changes (detection, registration)Define annual campaigns and work-packages

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Survey changes (detection, registration)Include inspections in campaigns and work-packages

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Survey changes (detection, registration)Inspection reports for campaigns and work-packages are automatically generated

Job summary

Job specification

Job reporting

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Survey changes (detection, registration)Execute inspections and record findings

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Assess changes (analysis, mitigation)Define asset changes and link it to CAE models

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Assess changes (analysis, mitigation)Define and manage CAE models

Model modifications required

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F ind information (documents, data)Store and manage documents of all formats

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F ind information (documents, data)Ensure quick access to key information

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Ensure integrity (status, condition)Finding Impact visualisation

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Ensure integrity (status, condition)Aggregated and detailed view of Finding impact status

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Ensure integrity (status, condition)Reports and statistics

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“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

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8 April 2010

30

Safeguarding life, property and the environment

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