Asset risk and integrity management
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Asset Risk and Integrity Management. PetroTech 2010. Presenter. Are Føllesdal Tjønn Managing Director DNV Software tel: +47 415 39 750 E-mail: [email protected] Making qualified decisions. Managing Risk. Risk = Probability of failure x Consequence of failure. identify

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Asset risk and integrity management

Asset Risk and Integrity Management

PetroTech 2010


Presenter

Presenter

Are Føllesdal TjønnManaging DirectorDNV Softwaretel: +47 415 39 750 E-mail: [email protected]


Asset risk and integrity management

Making qualified decisions


Managing risk

Managing Risk

Risk = Probability of failure x Consequence of failure


The key challenge

identify

assess

manage

risk

The key challenge


Risk also means opportunities

RISK also means opportunities

  • No risk – no business

  • Take the right risks

    • Known and understood

    • Can be managed and controlled

  • Balance risk and return

  • Exploit ‘competitive’ risk advantage

Our challenge is not to eliminate risks, but to identify, assess and manage them appropriately!


New risk reality compelling events

New risk reality – compelling events

  • Increasingly more global, complex and demanding risk environment

  • “zero tolerance” for failure

  • Transparency and business sustainability

  • Stricter regulatory requirements


Ageing assets and infrastructure

Ageing assets and infrastructure

  • Ageing assets and infrastructures imposes an increasing challenge in safeguarding life, property and the environment

  • Extended life - huge upside

  • Minimized downtime – huge return


Fatigue crack fatal consequences

Fatigue crack – fatal consequences


What is it about

What is it about


Structural integrity management norsok n 005

Structural Integrity Management - Norsok N-005

”The Operator shall throughout the lifetime of the

installation ensure that the load bearing structures

are suitable for the intended purpose.

The Operator shall monitor the condition of the

operated offshore installation in a systematic

manner.

This may include development of an overall

philosophy and strategy for condition

monitoring, 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.”


Asset risk and integrity management

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.


Asset risk and integrity management

Structural Integrity Management - ISO 19902

Chapter 23:

”In-service Inspection and Structural Integrity Management”

Chapter 25:

”Structure reuse”

”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's

data 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.”


Asset risk and integrity management

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.”


Asset risk and integrity management

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.”


Asset risk integrity management for structures

Asset Risk & Integrity management for Structures

Operators’s Integrity Management Team

Risk

Based

IntegrityManagement

Structural Analysis Team

Site

Inspection

team

Inspections

Findings

RBI - Plans

Analysis

Results

CAE

(Finite ElementAnalysis)


Value of sesam structure integrity sims

Value of Sesam Structure Integrity (SIMS)

Structure Integrity Status

  • Reduce cost through quality and consistency

  • Improve quality through uniform and consistent reporting

  • Secure timely response to integrity issues

  • Ensure secure and prompt access to all relevant data

  • Minimise risk exposure and failure frequency

  • Improve organisational efficiency

  • Open architecture (integration, configuration)

  • Support service life extension

  • Improves knowledge sharing across stakeholders


Return on investment

Return on Investment

Reduced downtime represent a huge return


Pipelines

Pipelines


Managing risk1

Managing Risk

Risk = Probability of failure x Consequence of failure


Compelling events

Compelling events


Understanding the system

  • Terminals

  • Export pipelines

  • In-field pipelines

  • Components

  • Process units

Export pipeline

In-field pipelines

  • Organisations

  • Cultures

  • Languages

Understanding the system


Understanding the threats

DFI threats

Design errors, Fabrication related, Installation related

Corrosion/erosion threats

Internal corrosion, External corrosion, Erosion

3rd party threats

Trawl interference, Anchoring, Vessel impact, Dropped objects, Vandalism / terrorism, Traffic, Other mechanical impact

Structural threats

Buckling – exposed line, Buckling – buried line, End expansion, On bottom stability, Static overload, Fatigue

Natural hazard threats

Extreme weather, Earthquakes, Landslide, Ice loads, Significant temp. variation, Floods, Lightning

Incorrect operation threats

Incorrect procedures, Procedures not implemented, Human errors

In-line-inspection (ILI)

External inspection (ROV or ROTV), In-line-inspection (ILI)

External inspection (ROV or ROTV)

External inspection (ROV or ROTV)

Understanding the threats


Managing the threats

DFI threats

Design errors, Fabrication related, Installation related

Corrosion/erosion threats

Internal corrosion, External corrosion, Erosion

3rd party threats

Trawl interference, Anchoring, Vessel impact, Dropped objects, Vandalism / terrorism, Traffic, Other mechanical impact

Structural threats

Buckling – exposed line, Buckling – buried line, End expansion, On bottom stability, Static overload, Fatigue

Natural hazard threats

Extreme weather, Earthquakes, Landslide, Ice loads, Significant temp. variation, Floods, Lightning

Incorrect operation threats

Incorrect procedures, Procedures not implemented, Human errors

Managing the threats

QA during design and installation phase and start-up inspection

Long term inspection plan

After event

Audit and training


All incidents reported in the north sea and the gulf of mexico with and without leakage

The North Sea*

* Fittings are not included

The Gulf of Mexico

All Incidents reported in the North Sea and the Gulf of Mexico with and without leakage


Situation for the operators

Situation for the operators

  • Complex installations,

    • Pipelines, Pumping and Booster stations, Tankfarms, Inline mechanical components, people …

  • Focus on cost effective operations, while maintaining integrity and safety level

  • Increasing expectations from the public, owners, customers

  • Stricter Regulatory requirements

  • Reliability for deliveries

  • Contractual demands and liabilities

  • Substantial investment in maintenance to assure up-time

  • Outsourcing versus in-house capabilities

http://mailman.mcmaster.ca/mailman/

private/cdn-nucl-l/0407/msg00052.html


It is about

Optimising cost of operation

AND

maintaining integrity and safety level

Risk management of complete pipeline systems

Onshore and Offshore

It is about …


Software enables productivity

Software enables productivity


Managing risk and condition

It is about integrating people, information and work processes

Managing risk and condition


Worl leading pipeline code dnv os f101 rp s

Worl leading pipeline code: DNV-OS-F101 (+ RP’s)


Address the industry s reality

Designed together with DNV’scompetence centers

  • Offshore pipeline group in Norway

  • Onshore pipeline and corrosion group in Columbus, Ohio

Built-in support for

  • DNV RP-F116, OS-F101

  • ASME B31.8S, B31.4

  • NACE …

  • API 1160, 1163

Address the industry’s reality

  • Focus on cost-effective operation

  • Contractual demands and liabilities

  • Stricter regulatory requirements

  • Re-qualification and life extention

  • Managing complex pipeline systems

    • AND people & organisations

  • Working with service suppliers


Risk management

Risk assessment template

Risk Management

Aggregates risk for complete pipeline systems

Structured and auditable

  • System risk aggregated from pipeline, component and hot-spot assessments

  • Drill-down from system level to individual assessments

  • Pre-defined DNV, ASME and API threatsConfigurable to meet national standards


Dynamic segmentation setting the focus right

Topside

Riser above splash zone

Riser splash zone

Riser below splash zone

CoF

D

C

PoF

4

3

8.5

0

0.3

8.0

0.8

0

7.0

2

1

Risk

VH

H

M

L

Dynamic segmentation – setting the focus right

Threat allocation – Internal corrosion

Pipeline Zone 1

Pipeline Zone 2


Aggregating risk the risk principle

Aggregating risk – the risk principle

Rule: Aggregate worst

System assessment

risk value for Pipeline System

Engineering judgement

Aggregated system risk

Rule: Aggregate worst

Hotspot assessments

risk value for each hotspot

Component assessments

risk value for each component

Pipeline assessments

risk value for each threat


Implementing company policies and rules

Profile

Rule (Set marker if..)

AND

OR

OR

OR

OR

OR

AND

AND

AND

OR

AND

AND

AND

OR

AND

AND

AND

AND

AND

AND

AND

AND

AND

AND

Pipeline

Pipeline

ILI

ILI

ILI

Freespan

Code check 1

Code check 2

Code check 3

Find Weld position

Find Repairs done

50% <d/t < 80%

d/t < 80%

Anomali < xmm

L/gap < Z

MAOP > Psafe

ERF > 0.82

Create hotspot!

Set technical condition to OK

Fix immediately!

x_____x

x_x

kp

Implementing company policies and rules

  • Threat specific rules identifies critical areas from vast amount of inspection and survey data

  • Creates responses and mitigating actions


Systematise through risk matrix

Systematise through Risk Matrix

  • Probability category: 1 to 5 (qualitative)

  • Consequence category: A to E

  • Risk categories: VL to VH

    • Risk matrix (configurable)

    • Risk limit (company specific)

Risk limit


Risk viewer

Risk Viewer


Risk explorer

RiskAssessment

ManagePipeline Data

Risk Explorer

  • Overview of System Assessment and aggregated risk

  • Drill-down to individual assessments

  • Points out missing assessment for a complete scope

See each threat’s risk contribution and

drill down to individual assessments

All valid assessments’ risk values for one pipeline


Management overview

Management Overview

  • Management access and overview should be made as easy is possible to

    • Monitor current status, integrity and programs

    • Supervise Key Performance Indicators


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