1 developing the mbse approach tony ramanathan principal engineer network rail
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1
Developing the MBSEApproach
Tony RamanathanPrincipal EngineerNetwork Rail
2
The Railway System
Investment Governance GRIP
Asst Life
Models / Analysis used
Interface Management – why we need Modelling
Modelling Tools
Design Handbook inc the Building Blocks
Agenda
3
The people, The process applied,
The systems used
4
Project Governance - GRIP“Project Life-Cycle”Governance for Railway Investment Projects (GRIP)There are Eight GRIP Stages
A RUS scheme is outside of Project Governanceand is between 5 to 7 years prior to GRIP 1Pre-GRIP
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Passenger Demand
SafetyRisk
TimetableRobustness
SystemReliability
Life Cycle Costs
Infrastructure Loading
ElectrificationCapacity
SignallingCapacity
LayoutCapacity
SystemCapability
Analyses Used in Systems Engineering
LayoutCapacity
TimetableDevelopment
Performance Evaluation
TrainService
Specification
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Asset Life
Railway System - Designed Asset Life
Structures 120Y Track / Signal
30 to 35 Y
Network RUS
6 to 20 Y Trains35Y
020406080
100120140
Asset Types
Yea
rs
TOC Franchise Between 5Y to 18 Y
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Interface Management - train infrastructure interfaces
• OLE Contact• Traction Power• EMC
• Platform Occupation/ Dwell Times
• Platform Length/SDO
• Stepping Distance• Station/ DDA Compliance
• Wheel/ Rail Interface• Axle Load• Route availability
(RA) / Allowable Speeds
• Train Detection • Track Conditions• Track Design/Quality• Drainage• Tonnage passing (load)
• Gauging Clearance• Kinematic Envelope (KE)
• Customer Information Systems (CIS)
• Lineside Infrastructure• Signalling & Telecoms
• Passengers behaviour
Modelling ToolsSystems Analysis
Section number to go here
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VTSIM
Models often consider differing Time Horizons
Spatial Representation*
Analysis Time Horizon
Mins Hours Days Periods Years MultiYears
EMI
RailSys
Pedflow
OSLO
ICM
Scheme level
Route level
Full UK
CUI
Asset level
TRAIL
SPA
* Spatial representation within a single model
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SA Approach towards Option Selection
Option 1 Capability:CapacityJourney TimesPowerReliabilityMaintenanceConstructionWhole life cost
Option X Capability:CapacityJourney TimesPowerReliabilityMaintenanceConstructionWhole life cost
‘Favoured Option’
Option Capability:CapacityJourney TimesPowerReliabilityMaintenanceConstructionWhole life cost
OptionSelection
SPA
RailSys
TRAIL
TIP
OSLO
LCC
Legion
Option 1 Capability:CapacityJourney TimesPowerReliabilityMaintenanceConstructionWhole life cost
Option X Capability:CapacityJourney TimesPowerReliabilityMaintenanceConstructionWhole life cost
Requirements& Option
Validation:
Ops & Perf. EngineeringEng PolicyFeasibility
SystemsCapability Modelling
PreliminaryAssessment
??
?
Option 2 Capability:CapacityJourney TimesPowerReliabilityMaintenanceConstructionWhole life cost
?
?
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Typical System Breakdown Structure (SBS)
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TRAIL (Transportation Reliability, Availability and Integrated Logistics)
Infrastructure
TRAIL discrete event simulator
OperationsRolling stockTimetable
Lateness Analysis
Delay Analysis
PPMInfrastructurePerformance
OperationsPerformance
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What about RailSys?• RailSys is used to provide the ‘operations tick in the box’ for any scheme
• Provides a very powerful visualisation of a timetable
• Can be used to identify detailed train path routeing and permits detailed event scenario modelling
• It does not do PPM
• Of note for engineers; the complexity within the model can vary (even if the model is compliant to NR Opns Build Ver6)
• Simple models are normally optimistic
• trains may exhibit movement behaviour which the driver / signaller might not be able to emulate in real life
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Capacity Modelling
Existing Layout Proposed Layout
Thameslink KO2 – The need for ATO Crossrail – Scheme Performance Assessment
ERTMS – Braking Curve Reading – Capacity Utilisation Index
Date 00.00.00 Presentation title to go here 15
Scheme Performance Assessment
Report
Scheme Model
Technical Headway
Junction Margin
Technical Platform
Reoccupation
Journey Times
Sectional Running Times
Rules Of The Plan (ROTP)
Calculation Database
Signalled Infrastructure
Train Service Specification
Rolling Stock Performance
Professional Driving Policy
Signalling Controls
Capacity Utilisation
Model Build SPAR Build
Capacity Utilisation
Timetabled Model
Additional Timetable /
Infrastructure
OSLO Support
Scheme Performance Assessment
Report
Scheme Model
Technical Headway
Junction Margin
Technical Platform
Reoccupation
Journey Times
Sectional Running Times
Rules Of The Plan (ROTP)
Calculation Database
Signalled Infrastructure
Train Service Specification
Rolling Stock Performance
Professional Driving Policy
Signalling Controls
Capacity Utilisation
Model Build SPAR Build
Capacity Utilisation
Timetabled Model
Additional Timetable /
Infrastructure
OSLO Support
SPA Process
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Key contacts
Specialist within Network Rail
Nigel Best – TRAIL, RAILSYS, RAM, FMECAClare Waller – TimetableMaya Petkova – EMCMark Burstow – Wheel / rail dynamicsCaroline Lowe – Climate+ Asset specialist
GaugingPowerSignallingTelecomsLevel Crossings
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The people, The process applied,
The systems used
Section 1 What is SE
Section 2Intro to SE Teams
Section 3GRIP, P Approval & Acceptance
Section 4System Integration
Section 5Building Blocks
Section 6Requirements
System Design Handbook
Links work only in Presentation Mode
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PSE – Building Blocks (guidance)(Links work in Presentation Mode)
Junction Evaluation + Presentation
Terminal Stations
Line Speed & Journey Time Improvements + Presentation
Consideration for Gradients / Curves + Presentation
Layout Development Workshops
PRS user guide
Light Rail + Presentation
Rail Maintenance Depots
Introduction to Building Blocks
PSE Schemes Resource estimating
Route Integration
Application of Standard Designs
Passenger Capacity
SystemSafety
TimetableRobustness
SystemReliability
Life Cycle Cost
SystemMaintenance
ElectrificationCapacity
SignallingCapacity
LayoutCapacity
SystemCapability
Undertaking a Pre Grip Evaluation
Freight Distribution Depots
Main Line Stabling Sidings
Generic Train InfrastructureInterface Specification +Presentation
Introduction To Station Design
Equality Act 2002 (DDA)
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Operators MMI
Cab DMI
EVCTrainborne GSM-
R data radioBalise readerOdometry
Trainborne
JRU
Balise
TracksideGSM-R
FTN
Interface to tractionand braking
Trainborne GSM-R voice radio
Signallers interface panel orVDU including train describer
CCTV level crossingsupervision
FTN
Operators RBC interface
Linesidetelephones
Signallers operational voicecomms MMI
FTN
Public Switched TelephoneNetwork
BTS
Handportable
Voice calllogger
Business systems and train planning including passenger information systems
SMART/TRUST/CCF
Automatic train managementsystems e.g ARS
Driver
Trackworker
Technician
Signaller
Controller
Operational Rules
PossessionMangement
Operational Rules
PossessionMangement
Signallers GSM-Rvoice interface
Train control system -indoor equipment
Signalling System Interlocking RBC
TechniciansInterlocking data logger
RBC datalogger
Outdoor train controlsystem equipment
FTN FTN
PointsTrain
detectionLevel
crossings
Othertracksidecontrolled
objects
Level crossingCCTV
Units likely to be be co-located
BSC
MSC
FTN
FTN
FTN
ERTMS Train Control System Operational Architecture - basicarrangement
Typical System Level Railway Functional Block Diagram (FBD)
20
DESIGN forRELIABILITY
Modify System Configuration
Use alternative Asset types
Control Key Processes
Introduce Condition Monitoring
Enhance Maintenance
Improve Operational Plans
DESIGN forRELIABILITY
Modify System Configuration
Use alternative Asset types
Control Key Processes
Introduce Condition Monitoring
Enhance Maintenance
Improve Operational Plans
System Diagrams
FMS / TRUST Data
Reliability Data Hdbk
Route FMECA (Tech. & Ops)
Design for Reliability
Cause & EffectWorkshops:Engineering
Maintenance Operations
TRAIL Model:Options Evaluation
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