1. ‘The Application of Systems Engineering’ - Spring Conference 2009 IMPLEMENTING PROGRESSIVE ASSURANCE ON THE EAST LONDON LINE PROJECT – LESSONS LEARNED Barry Hodges, PhD, C Eng, MIET, MIMechE Systems Assurance Manger – ELLP (Transport for London) Roger Moorey BSc, C Eng, FIET Configuration Manager – ELLP (Parsons Brinckerhoff Ltd.) Alan Knott, BEng, C Eng, FIET Systems Engineering Consultant – ELLP (Parsons Brinckerhoff Ltd.) Copyright © 2009 by Barry Hodges (TfL) and Roger Moorey & Alan Knott (Parsons Brinckerhoff) Published and used by INCOSE with permission

2. ‘The Application of Systems Engineering’ - Spring Conference 2009 Overview  Sound Engineering  The Case for Technical Cases  Russian Dolls  Wood for the Trees  The Evidence M’Lord  Traffic Lights  Any Questions?

3. ‘The Application of Systems Engineering’ - Spring Conference 2009 System Engineering principles applied on the ELLP:  System Breakdown Structure (Levelling)  Lifecycle Management  Operational Concept  Modelling  System Definition  Requirement Management  Interface Definition and Management  Configuration Management and Baselines  Progressive Assurance Sound Engineering

4. ‘The Application of Systems Engineering’ - Spring Conference 2009 Level 2 (Element) Existing Railway East London Line Railway Operations Changing Railway Infrastructure Level 1 (System) Rolling Stock Levelling – Railway System Breakdown Level 2 (Element) Level 1 (System) Passenger Services Operation Network Operators Infrastructure Managers Rules & Procedures Agreements Passenger Rolling Stock Engineering Rolling Stock Structures Cab Interior Saloon Power Supply Train Control & Protection Dynamics, Gauging & Movements Performance RAMS Acoustics Climate Materials & Environment Passenger Functionality VBS Level 4 (Sub-System) Level 3 (Package) Enabling Works Main Works Networ k Rail Works London Underground Works Other Works IDABS Telecomms Track Civils & Structures E &M Signalling Traction Power HV Power LV Power Routewide Systems / Disciplines Locations Dalston Jnt Shoreditch HS Whitechaple OBC NXG Facility New Cross Gate Level 3 (Package)

5. ‘The Application of Systems Engineering’ - Spring Conference 2009 Level 1 Level 4 Level 3 Level 2 Level 3 Level 4 Level 2 Requirements Definition Preliminary Product Specification Detailed Product Specification Product Creation Product Test Install Proving (In-situ) Test Acceptance Test Transfer into Service In Service Support Decommission & Disposal Stages 0 3 4 5 6 7 8 10 9 2 1 Reviews & Baselines Requirements Review Preliminary Product Review Detailed Product Review Product Test Readiness Review Product Test Review Installed Product Review Acceptance Test Readiness Review Operational Readiness Review Operational Performance Review Acceptance Test Review Engineering Lifecycle

6. ‘The Application of Systems Engineering’ - Spring Conference 2009 Increasing Integration & Scale Increasing Decomposition & Detail Verification (Next Stage Satisfies the Intention of the Previous Stage) Verification (Next Stage Satisfies the Intention of the Previous Stage) Validation (What Has Been Produced Meets Requirements) Requirements Definition Preliminary Product Specification Detailed Product Specification Product Creation Product Test Install Proving (In-situ) Test Acceptance Test Transfer into Service In Service Support Decommission & Disposal Verification & Validation

7. ‘The Application of Systems Engineering’ - Spring Conference 2009 The Case for Technical Cases Assurance Evidence Assurance Evidence ance nce

8. ‘The Application of Systems Engineering’ - Spring Conference 2009 Progressive Assurance

9. ‘The Application of Systems Engineering’ - Spring Conference 2009 Technical Cases ELM-TEC-204-04-0X-00YY, ELLP Level Z Technical Case ELM-TEC-239-05-0A-00BB ELLP Level Z Technical Case Argument Structure ELM-TEC-204-04-0C-00DD ELLP Level Z Technical Case Description ELM-TEC-204-04-0E-00FF ELLP Level Z Technical Case Evidence Table

10. ‘The Application of Systems Engineering’ - Spring Conference 2009 Russian Dolls Principles Levelling Lifecycle Guidance Technical Case TC

11. ‘The Application of Systems Engineering’ - Spring Conference 2009 Wood for the Trees Requirements are valid Requirements are satisfied Requirements are traceable Consistent set of arguments and evidence exists Process argument The early Level 1 ELLP GSN argument - 2005

12. ‘The Application of Systems Engineering’ - Spring Conference 2009 Wood for the Trees Requirements are traceable Process argument Consistent set of arguments and evidence exists Non-interference argument Requirements are satisfied Requirements are valid The developing Level 1 Product GSN argument - 2006

13. ‘The Application of Systems Engineering’ - Spring Conference 2009 Wood for the Trees The developed ELLP Level 1 Product GSN Argument - 2007

14. ‘The Application of Systems Engineering’ - Spring Conference 2009 Wood for the Trees The Rationalised ELLP Level 1 Product GSN Argument - 2008

15. ‘The Application of Systems Engineering’ - Spring Conference 2009 The Evidence M’Lord  What is the evidence.  Where is the evidence retained.  How do we categorise the evidence.

16. ‘The Application of Systems Engineering’ - Spring Conference 2009 The Evidence M’Lord Primary Direct = TC (Primary Direct) + Appendices (Secondary Direct; Primary Backing) in MWC EDMS = Secondary Backing remains with supply chain = Main Body TC contains Primary Direct from MWC EDMS Primary Backing Secondary Direct Main Works Contractor (MWC) Held Evidence (to TfL) Secondary Backing MWC Supply Chain Held Evidence

17. ‘The Application of Systems Engineering’ - Spring Conference 2009 Traffic Lights ABAB

18. ‘The Application of Systems Engineering’ - Spring Conference 2009 Traffic Lights - GSN G0031 A Sub-Goal G0032 A Sub-Goal Sn00 3 Sn00 5 Sn00 4 G0001 Topmost Goal St001 Strategy for G0001 A01 An Assumption A C01 A Constraint St002 Strategy for G0010 A02 An Assumption A G0020 A Sub-Goal G0030 A Sub-Goal G0010 A Sub-Goal Sn00 1 St003 Strategy for G0030 J01 A Justification J G0011 A Sub-Goal Sn00 2 G0100 An Expanded Goal

19. ‘The Application of Systems Engineering’ - Spring Conference 2009 Traffic Lights - GSN G0031 A Sub-Goal G0032 A Sub-Goal Sn00 3 Sn00 5 Sn00 4 G0001 Topmost Goal St001 Strategy for G0001 A01 An Assumption A C01 A Constraint St002 Strategy for G0010 A02 An Assumption A G0020 A Sub-Goal G0030 A Sub-Goal G0010 A Sub-Goal Sn00 1 St003 Strategy for G0030 J01 A Justification J G0011 A Sub-Goal Sn00 2 G0100 An Expanded Goal Not Available In Progress Complete On going

20. ‘The Application of Systems Engineering’ - Spring Conference 2009 Traffic Lights – Evidence Table

21. ‘The Application of Systems Engineering’ - Spring Conference 2009 Conclusions  Sound Engineering – systematic approach  The Case for Technical Cases – SA matching SE  Russian Dolls – to provide a consistent look and feel  Wood for the Trees – to consolidate the argument  The Evidence M’Lord – to apply a risk based approach  Traffic Lights – to monitor & expedite progress

22. ‘The Application of Systems Engineering’ - Spring Conference 2009 Questions? www.tfl.gov.uk/overground www.pbworld.co.uk IMPLEMENTING PROGRESSIVE ASSURANCE ON THE EAST LONDON LINE PROJECT – LESSONS LEARNED Barry Hodges, PhD, C Eng, MIET, MIMechE Systems Assurance Manger – ELLP (Transport for London) Roger Moorey BSc, C Eng, FIET Configuration Manager – ELLP (Parsons Brinckerhoff Ltd.) Alan Knott, BEng, C Eng, FIET Systems Engineering Consultant – ELLP (Parsons Brinckerhoff Ltd.)