Developing the
MBSE
Approach
Tony Ramanathan
Principal Engineer
Network Rail
1
Agenda
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
2
The people,
The process applied,
The systems used
3
Project Governance - GRIP
“Project Life-Cycle”
Governance for Railway Investment Projects (GRIP)
There are Eight GRIP Stages
Pre-GRIP
A RUS scheme is outside of Project Governance
and is between 5 to 7 years prior to GRIP 1
4
Analyses Used in Systems Engineering
Layout
Capacity
Signalling
Capacity
Passenger
Demand
Safety
Risk
Performance
Evaluation
Train
Service
Specification
Timetable
Development
Layout
Capacity
Electrification
Capacity
System
Capability
Timetable
Robustness
Infrastructure
Loading
System
Reliability
Life Cycle
Costs
5
Asset Life
Railway System - Designed Asset Life
s
Track / Signal
30 to 35 Y
Co
m
ck
Tr
a
Si
gn
al
s
ins
TOC Franchise
Between
5Y to 18 Y
Trains
35Y
Tr
a
Po
we
r
Bu
i ld
in
gs
St
ru
ctu
re
s
Years
140
120
100
80
60
40
20
0
Pl
an
t
Network
RUS
6 to 20 Y
Structures
120Y
Asset Types
6
Interface Management - train
infrastructure interfaces
• OLE Contact
• Traction Power
• EMC
• Customer Information
Systems (CIS)
• Lineside Infrastructure
• Signalling & Telecoms
• Passengers
behaviour
• Gauging Clearance
• Kinematic Envelope (KE)
• Train Detection
• Track Conditions
• Track Design/Quality
• Drainage
• Tonnage passing (load)
• Wheel/ Rail Interface
• Axle Load
• Route availability
(RA) / Allowable
Speeds
• Platform Occupation/
Dwell Times
• Platform Length/SDO
• Stepping Distance
• Station/ DDA Compliance
7
Modelling Tools
Systems Analysis
Section number to go here
Models often consider differing Time Horizons
Full UK
ICM
Route level
TRAIL
RailSys
Spatial
Representation*
Scheme level
Asset level
OSLO CUI
SPA
Pedflow
VTSIM
EMI
Mins
Hours
Days
Periods
Years
Multi
Years
Analysis Time Horizon
* Spatial representation within
a single model
9
SA Approach towards Option Selection
Preliminary
Assessment
Systems
Capability
Modelling
Option 1 Capability:
Capacity
Journey Times
Power
Reliability
Maintenance
Construction
Whole life cost
Option 1 Capability:
‘Favoured Option’
Option 2 Capability:
?Capacity
Journey Times
? Power
Reliability
Maintenance
Construction
Whole life cost
Option X Capability:
Capacity
?Journey Times
?Power
Reliability
? Maintenance
Construction
Whole life cost
Requirements
& Option
Validation:
Capacity
Journey Times
Power
Reliability
Maintenance
Construction
Whole life cost
SPA
Capacity
Journey Times
Power
Reliability
Maintenance
Construction
Whole life cost
Option
Selection
RailSys
OSLO
Option X Capability:
Ops & Perf.
Engineering
Eng Policy
Feasibility
TIP
TRAIL
Legion
Option Capability:
Capacity
Journey Times
Power
Reliability
Maintenance
Construction
Whole life cost
LCC
10
Typical System Breakdown Structure (SBS)
11
TRAIL
(Transportation Reliability, Availability and Integrated Logistics)
Timetable
Infrastructure
Rolling stock
Operations
TRAIL discrete event simulator
PPM
Lateness
Analysis
Delay
Analysis
Infrastructure
Performance
Operations
Performance
12
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
13
Capacity Modelling
Thameslink KO2 – The need for ATO
Crossrail – Scheme Performance Assessment
Existing Layout
ERTMS – Braking Curve
Proposed Layout
Reading – Capacity Utilisation Index
14
SPA Process
Model Build
Signalled
Infrastructure
SPAR Build
Scheme
Model
Signalling
Controls
Rolling Stock
Performance
Calculation
Database
Technical
Platform
Reoccupation
Journey
Times
Train Service
Specification
Date 00.00.00
Scheme
Performance
Assessment
Report
Junction
Margin
Professional
Driving Policy
Additional
Timetable /
Infrastructure
Technical
Headway
Rules Of The
Plan (ROTP)
Sectional
Running
Times
Capacity Utilisation
Timetabled
Model
Presentation title to go here
OSLO
Support
Capacity
Utilisation
15
Key contacts
Specialist within Network Rail
Nigel Best
– TRAIL, RAILSYS, RAM, FMECA
Clare Waller – Timetable
Maya Petkova – EMC
Mark Burstow – Wheel / rail dynamics
Caroline Lowe – Climate
+ Asset specialist
Gauging
Power
Signalling
Telecoms
Level Crossings
16
System Design Handbook
Links work only
in Presentation Mode
Section 1
What is SE
Section 2
Intro to SE Teams
Section 6
Requirements
Section 5
Building Blocks
The people,
The process applied,
The systems used
Section 3
GRIP, P Approval
& Acceptance
Section 4
System Integration
17
PSE – Building Blocks (guidance)
(Links work in Presentation Mode)
Introduction to
Building Blocks
PSE Schemes
Resource estimating
PRS user guide
Application of
Standard Designs
Main Line Stabling
Sidings
Generic Train Infrastructure
Interface Specification +
Presentation
Layout
Capacity
Signalling
Capacity
Passenger
Capacity
System
Safety
Timetable
Robustness
Terminal Stations
Line Speed & Journey
Time Improvements +
Presentation
Layout
Development
Workshops
Electrification
Capacity
System
Capability
Freight Distribution
Depots
Rail Maintenance
Depots
Route Integration
System
Maintenance
System
Reliability
Life Cycle
Cost
Consideration for
Gradients / Curves +
Presentation
Equality Act 2002
(DDA)
Undertaking a
Pre Grip Evaluation
Light Rail + Presentation
Junction Evaluation
+ Presentation
Introduction To
Station Design
18
Typical System Level Railway Functional Block
Diagram (FBD)
ERTMS Train Control System Operational Architecture - basic
arrangement
R
M-
Trainborne
Operational Rules
JRU
Cab DMI
R
M-
GS
Trainborne GSMR voice radio
Odometry
Level
crossings
Train
detection
MSC
Points
Outdoor train control
system equipment
FTN
Possession
Mangement
Trackside
BTS
GSM-R
FTN
Balise
Level crossing
CCTV
Hand
portable
FTN
BSC
Trainborne GSMR data radio
EVC
Balise reader
R
M-
GS
Units likely to be be colocated
Interface to traction
and braking
Driver
GS
Other
trackside
controlled
objects
Lineside
telephones
FTN
FTN
Track
worker
FTN
FTN
FTN
Signalling System Interlocking
RBC
Technician
Technicians
Interlocking data logger
Signaller
CCTV level crossing
supervision
Operational Rules
Train control system indoor equipment
RBC data
logger
Signallers interface panel or
VDU including train describer
Operators RBC interface
Voice call
logger
Signallers operational voice
comms MMI
Signallers GSM-R
voice interface
Operators MMI
Possession
Mangement
Automatic train management
systems e.g ARS
Public Switched Telephone
Network
SMART/TRUST/CCF
Controller
Business systems and train planning including passenger information systems
19
Design for Reliability
TRAIL
(Transportation Reliability, Availability and Integrated
Logistics)
Timetable
Infrastructure
Rolling stock
Operations
TRAIL discrete event simulator
PPM
Lateness
Analysis
Delay
Analysis
Infrastructure
Performance
Operations
Performance
TRAIL
Model:
Options
Evaluation
System Diagrams
DESIGN for
RELIABILITY
Modify System
Configuration
Use alternative
Asset types
Control Key
Processes
FMS / TRUST Data
Route FMECA (Tech. & Ops)
Introduce
Condition Monitoring
Enhance Maintenance
Cause & Effect
Workshops:
Reliability Data Hdbk
Engineering
Maintenance
Operations
Improve
Operational Plans
20