KP4 Seminar Managing Ageing Assets via ALE OGRE

28th May 2014

Agenda/Topics Covered

Asset Overview

Operating Management System

MAH Management via Asset Integrity & ALE Process

ALE Process and OGRE Assessment Tool Asset Integrity Rectification Programme

2

Asset Overview

Operating Management System

4

Operating Management System

5

MAH Management via Asset Integrity & ALE Processes

6

Asset Safety CasesJustification for safe operation, minimise risk from

Major Accident HazardsThrough identification of

Safety Critical Elements (SCE)And establishing

Performance StandardsOn which to base effective

Integrity AssuranceWhich is required for independent

Verification To demonstrate

SCEs IntegrityIn support of the safety cases

MAH Management via Asset Integrity & ALE Processes

7

A

gein

g &

Obs

oles

cenc

e

Asset Safety CasesJustification for safe operation, minimise risk from

Major Accident HazardsThrough identification of

Safety Critical Elements (SCE)And establishing

Performance StandardsOn which to base effective

Integrity AssuranceWhich is required for independent

Verification To demonstrate

SCEs IntegrityIn support of the safety cases

UK-00554 Asset Integrity Process

MAH Management via Asset Integrity & ALE Processes

8

A

gein

g &

Obs

oles

cenc

e

Life

Ext

ensi

on

Asset Safety CasesJustification for safe operation, minimise risk from

Major Accident HazardsThrough identification of

Safety Critical Elements (SCE)And establishing

Performance StandardsOn which to base effective

Integrity AssuranceWhich is required for independent

Verification To demonstrate

SCEs IntegrityIn support of the safety cases

UK-00554 Asset Integrity Process

UK-00555 Asset Life Extension

Process

Asset Life Extension Process

9

Life

Ext

ensi

on

UK-00555 Asset Life Extension

Process

Goal; Demonstrate fitness for purpose & suitability of

an asset for specified Life Extension period

By; Identifying ageing, obsolescence and life

extension issues via systematic assessment (OGRE)

Fully supporting Safety Case Thorough Review requirements

Providing key inputs to Basis of Design documents allowing for planning & execution of identified actions

10

Oil & Gas Release Elimination (OGRE) Assessment Tool Ensures Ageing, Obsolescence & Asset Life Extension are managed

Identifies issues associated with maintaining fitness for purpose of an asset for a specified Life Extension period

Facilitator led assessment carried out by multi-functional team reviewing ~60 ALE considerations against all SCE, BCE and ECEs

Prioritise issues/gaps:

Red Process/procedure gap and condition issues Amber Condition issues only Green No gaps/issues

Issues/gaps validated against ALE strategy of Maintain; Repair; Replace; Remove criteria

Defined scopes implemented via Asset Integrity Rectification Programme

Ageing is not about how old your equipment is; its about what you know about its condition, and how thats changing over time

11

Oil & Gas Release Elimination (OGRE) Assessment Tool Ensures Ageing, Obsolescence & Asset Life Extension are managed

Asset Life Extension Considerations Plant & Equipment History & Information ; Programmes & Procedures; Degradation Mechanisms; ALE Strategy

SCE

s; B

CEs;

ECE

s

SNS Asset Integrity Rectification Programme

Ensures Asset & Operating Integrity fitness for purpose is maintained through to the end of field life

Programme commenced mid 2012 with scopes executed via 106POB walk-to-work barge over ~ 60-80 day duration per asset

Key focus areas/workscopes derived from ALE/OGRE process output combined with existing prioritised defects (100% P1 P2; X% P3) Decommissioning / Rationalisation of redundant equipment Construction Fabric Maintenance / Tertiary Steel Scope Fabric Maintenance (blasting & painting) Obsolescence

LOS Microwave System, UPS, Navaids, etc Maintenance

Power Generation, Crane, etc

12

GMS Endurance at SNS NUI

13

Asset Integrity Rectification Programme Status

Completed Ongoing

Asset Integrity Rectification Programme Key Stats

4 satellite scopes completed over 21 month period (>300,000 man hours)

Completed circa 1300 workscopes

Replaced 12 obsolete systems (UPS, NAVAID & LOS) from each asset

1 Helideck replacement carried out

Removed circa 480Te of redundant steel

Replaced 3.75km of Unistrut

5000 litres of paint applied

527Te scaffolding erected/dismantled

Helideck Removal/Replacement

16

Plant Optimisation

17

Rationalisation of Process Plant

18

Wellhead/Tree Fabric Maintenance

KP4 SeminarManaging Ageing Assets via ALE OGRE Agenda/Topics CoveredAsset OverviewOperating Management System Operating Management System MAH Management via Asset Integrity & ALE Processes MAH Management via Asset Integrity & ALE Processes MAH Management via Asset Integrity & ALE Processes Asset Life Extension Process Oil & Gas Release Elimination (OGRE) Assessment Tool Ensures Ageing, Obsolescence & Asset Life Extension are managedOil & Gas Release Elimination (OGRE) Assessment Tool Ensures Ageing, Obsolescence & Asset Life Extension are managedSlide Number 12GMS Endurance at SNS NUIAsset Integrity Rectification Programme Status Asset Integrity Rectification Programme Key Stats Helideck Removal/ReplacementPlant Optimisation Rationalisation of Process PlantWellhead/Tree Fabric Maintenance