DNV GL © 2013 May 2016 SAFER, SMARTER, GREENERDNV GL © 2013

SOFTWARE

October 31, 2016Cangbo Zheng Head of Section - Fixed Structure Offshore Engineering Pål Dahlberg Product Manager Synergi Structure

Structure Integrity Management for Fixed Structures

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DNV GL © 2013 May 2016

The Situation: 3000+ Fixed Offshore Platforms in GOM

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Source: Wall Street Journal (2010)http://www.wsj.com/news/interactive/AGING101214

More than 50% of the platforms have exceeded the design lives

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The Situation: Oil Price

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Industry focus on Cost Cutting (OPEX & CAPEX)

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How DNVGL can help with data-smart SIM solutions

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Keep Control of your assets with reduced staff– Efficient Data Management

Lower data hand-over costs– Contractor <=> Operator

Lower data integration costs– In between SIM related applications

Optimize the SIM Program– Moving from time based to Risk based planning

– Smarter Structural Assessments

CAPEX related

OPEX relatedOPEX related

Asset Life Extension vs. New Field Development

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SOFTWARE

Sesam user course SE-10

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Synergi Structure DNV GL’s Structural Integrity Management System

DNV GL © 2013 May 2016

DNV GL - Software

DNV GL is the world-leading providerof software for a safer, smarter and greener future

in the oil and gas, energy, maritime and process industries.

Ship managementand class

Asset simulationand optimisation

Design andengineering

Process Safety, risk and reliability

Asset integrityand performance

QHSE and enterprise risk

DNV GL © 2013 May 2016

DNV GL integrity management software packages

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SYNERGI PLANT• Facility management• RBI and RCM• Inspection and maintenance plan• Work packaging and execution• Integrity assessment and anomaly• KPI, traffic light, and report• Integration interface

SYNERGI STRUCTURE• Structure data and model• Structure RBI• Inspection planning and recording• 3D viewer• KPI, traffic light, and report• Integration interface

SYNERGI PIPELINE• Pipeline data management• Pipeline risk assessment• Inspection data management• Integrity and anomaly• GIS and spatial• KPI, traffic light, and report• Integration interface

SYNERGI DASHBOARD• Management overview• Risk summary and trend• Geographical risk view• Integration and drilldown

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SIMS in DNV GL – Timeline

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2004 2010 2013

SIMS ConocoPhillips Ekofisk

IIP SIMDNV Offshore Class

SIM for Statoil

Synergi Structure

Synergi Structure for Jacket Operators

DNV GL Merge

Galiom Structure

2012 2016

Synergi Structure Alignment of functionality

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Synergi Structure Applications as of 2016

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IIP In-service Inspection Programfor Mobile Offshore Units

Shared Web solution DNV GL – Client

300+ Units:

Semi-Subs, Jack-up, FPSO,++

DNV GL Offshore Class

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Synergi Structure Applications as of 2016

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Configurations for fixed & floating structures

Module for RBI for fixed platforms

Integration with Sesam Analysis Models

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Why SIM?

Ensuring fitness for purpose of offshore structure(s) throughout the lifetime

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”.”” 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.

NORSOK N-005

”The owner shall ensure that suitable arrangements are in place for monitoring and maintaining the integrity of a floating structure throughout its life cycle.”

”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.”

ISO 19902 / 19904

”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.”

API- RP-2SIM

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Structural Integrity Management Process

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DATA EVALUATION STRATEGY PROGRAM

Evaluation ofstructural integrity

and fitness-for purpose;

development ofremedial actions

Managed systemfor the archivaland retrieval ofSIM data and

other pertinentrecords

Detailed work scopes for inspection activities and offshore execution to obtain quality data

Overall inspectionphilosophy andstrategy andcriteria for in-

service inspection

DNV GL © 2013 May 2016

SIM Process in Synergi Structure

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DATA EVALUATION STRATEGY PROGRAM

Managed systemfor the archivaland retrieval ofSIM data and

other pertinentrecords

DNV GL © 2013 May 2016

Visualisation Models in Synergi Structure:

• From FEA Sesam (Entire Structure or substructure) reusing Sesam names

• Sesam Models mapped to a hierarchical breakdown

• Hybrid Model (Sesam + CAD components) mapped to a hierarchical breakdown

Synergi Structure Asset Condition Tracker Models

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DNV GL © 2013 May 2016

Synergi Structure Asset Condition Tracker Models

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Visualisation Models in Synergi Structure:

• From FEA Sesam (Entire Structure or substructure) reusing Sesam names

• Sesam Models mapped to a hierarchical breakdown

• Hybrid Model (Sesam + CAD components) mapped to a hierarchical breakdown

DNV GL © 2013 May 2016

Synergi Structure Asset Condition Tracker Models

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Visualisation Models in Synergi Structure:

• From Sesam (Entire Structure or substructure) reusing Sesam names

• Sesam Models mapped to a hierarchical breakdown

• Hybrid Model (Sesam + CAD components) mapped to a hierarchical breakdown

DNV GL © 2013 May 2016

SIM Process in Synergi Structure

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DATA EVALUATION STRATEGY PROGRAM

Evaluation ofstructural integrity

and fitness-for purpose;

development ofremedial actions

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Structural RBUI: Risk Evaluation

Consequence of Failure (COF)• Consequence band derived from Company Risk Matrix. (Configurable 5x5 Matrix)

COF defined as the most severe of:

• Health and safety• Environmental• Business• Reputation

Probability

1 2 3 4 5

Con

sequ

ence

A 15 12 12 10 8

B 12 10 9 7 5

C 12 9 7 5 5

D 10 7 5 5 3

E 8 5 5 3 3

Probability of Failure (POF)• Probability (likelihood) of failure can be categorized

by either

• Qualitative (rule based) method

• RSR semi-quantitative method

• Refined quantitative methods

Platform Risk = COF x POF Inspection interval is determined from interval matrix. (3-15 years)

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Structural RBUI – Probability of Failure (Rule Based)

• Rules have been developed to produce a score that defines the relative Probability of failure of the platform based on:

• Baseline platform Design (characteristic) data

• Present condition of the structure

• Load susceptibility rules

• To capture the relative importance of each rule, a weighting system is used.

• The summation of the product of the weight and score for each rule gives the overall Probability of failure score for each platform.

– Stotal = Total score for Probability of failure

– Wi = Weighting attributed to rule i

– Si = Score attributed to rule i

• The resulting Probability severity level (1-5) is determined based on a calibrated score range band for each severity level.

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Utilising Reserve Strength Ratio (RSR)

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• RSR: Measure of Platform Robustness

Displacement (Delta)

Rati

o o

f B

ase S

hear

to 1

00-y

ear

load

set

Ductile Collapse

Design

First Yield(primary framing)

Ultimate Strength

Linear Response Non-Linear Response

Major DamageServiceability Limit?

100 yr (Code Req.)

WAVE & CURRENT

∆

1.0

2.0

Robustness(defect tolerance)

X

Target X

• Ratio of the base shear at ultimate capacity to the base shear from the ULS 100-year load

• Derived from Non-linear progressive collapse “Pushover” analysis by e.g. Sesam Usfos

> Important that analysis models truly reflect the current condition

(Ref. Analysis Portal)

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RBUI Assessment in Synergi Structure

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PoF Scorecard Calculation Drilldown

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RBI in Synergi Structure: PoF Calc. with RSR Override

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Portfolio Risk Overview

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SIM Process in Synergi Structure

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DATA EVALUATION STRATEGY PROGRAM

Evaluation ofstructural integrity

and fitness-for purpose;

development ofremedial actions

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SIM Assessment Process

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Data Evaluation ProgramInitiatorTriggered?

No

Yes

Assessment

Strategy

Triggers Structural Analyses

Modifications

Metocean Criteria

Weight Change

Damage/Deterioration

Regulatory Compliance

Analysis Portal :

Managing Change for As-Is Analysis Models

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Structural Analysis As-Is Models

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As-is = As-built + CHANGES

Modifications

Deterioration

Damage/Accidental Events

Foundation (Scour)

Metocean Criteria New Codes/Regulations

Air-Gap/ WiD

Exceedance of design life

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Analysis Portal – Analysis Model Tracker

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• Showing compliance status ,which Analysis models are required, and the status, whether the present as-is models are in compliance with all changes

• As-Is Model registerfor all Structural Analysis Models

• Safe controlled storage of Model data including geometry, loads & execution scripts+ all design basis documents

• Full version history with historical models

• Tracking Changes for As-Is Models

• Change Register with audit trail

• Overview of all affected models

• Holds all pertaining documents

• Workflow with email notifications

DNV GL © 2013 May 2016

SIM Process in Synergi Structure

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DATA EVALUATION STRATEGY PROGRAM

Overall inspectionphilosophy andstrategy andcriteria for in-

service inspection

DNV GL © 2013 May 2016

Alternatively, Long Term Plan based on quantitative RBI

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DNV GL © 2013 May 2016

Condition Monitoring – Inspection Management Supported

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Type Methodology Description Applicability

DNVGL Offshore ClassIn-service Inspection program

DNVGL-RU-OU-0101 Component Based

Periodic Inspection5 year renewal cycle

Scope pending on type, age, Class Notation

Mobile Offshore Units

(All vessels in DNVGL Offshore Class)

Qualitative RBUI In accordance with API RP 2SIM

System based

Risk Rule BasedRisk RSR Override

API RP 2SIM Default

Fixed Structures

JacketsJackets

Monopods

Quantitative RBI DNVGL-RP-C210 Component based

Calc. of PoF & CoF based on fatigue

Fixed & Floating Offshore Structures w/fatigue exposure

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Utilizing Qualitative & Quantitative RBI

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(Fleet of structures)Risk Ranking & Initial Assessment

(A selected or a fleet of structures)Data Gathering

Risk Matrix

Import Framework Inspection Plan into Synergi Structure

Prepare IMR Program(Selected structures(s))

(Selected structures)

Perform RBI Analysis• Risk Screening

• Refined Fatigue Analysis

Target probability level

1E-04

1E-03

1E-02

1E-01

1E+00

1E-04 1E-03 1E-02 1E-01 1E+00

Conditional probability of failure

Acc

umul

ated

failu

re p

roba

bilit

y

No inspections

Inspections required

DNV GL © 2013 May 2016January 201433

Quantitative RBI:Based on DNVGL RP-C210

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The Fatigue Analysis and RBI vs. Synergi Structure

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Fatigue Analyses

Inspectionhistory

RBIInspection Plan

Inspection Planning (RBI)

Inspection Program

Evaluation of findingsModels SIMS

Synergi StructureMember Importance Analyses

Inspection Results

Data

Integrity statusWhere to inspect ?

When to inspect ?

How to organize information?What inspection method ?

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SIM Process in Synergi Structure

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DATA EVALUATION STRATEGY PROGRAM

Detailed work scopes for inspection activities and offshore execution to obtain quality data

Inspection Workflow:

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© Det Norske Veritas AS. All rights reserved

Slide 36

09 November

Inspection Workflow

• Creating Inspections

• Scheduled

• Unscheduled – Special

• Historic

• Selecting Scope from LTIP

• Creating Work-Packs

• Recording wizard or Excel Templates

• Finally import of Inspection results into Asset Condition Tracker

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Inspection Workflow – Asset Condition Tracker

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• 3D View from Sesam Model

• (alt. import from Sacs)

• (alt generated from CAD)

• Multiple Viewing features

• Filtering on all attributes

• Trending of Inspection Data

• Assignment of Mitigations

• Follow-up until closure

DNV GL © 2013 May 2016January 201438

Synergi Dashboard

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Synergi Risk Dashboard: Demonstrate you are in control

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Configurable Risk Maps – Offshore Field 1

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Risk Map – Drill Down to Structure Dashboard

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Click

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Summing up

One central data management system holding all SIM data readily available

Instant overall KPI overview with easy drill down

Efficient tool for planning & executing Risk Based Inspections

Anomaly Management including 3D-View visualisation models

Analysis Portal – Change Management of Analysis models

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Synergi Structure provides:

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www.dnvgl.com

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Pal.Dahlberg@dnvgl.com+47 416 12 764

The world-leading provider of software for a safer, smarter and greener future