Developing the MBSE Approach Tony Ramanathan Principal Engineer

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 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 System Capability Timetable Robustness Timetable Development Layout Capacity Electrification Capacity Infrastructure Loading System Reliability Performance Evaluation Train Service Specification Life Cycle Costs 5

Asset Life 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 Rail. Sys Spatial Representation* Scheme level Asset level OSLO CUI SPA Pedflow VTSIM EMI Mins Hours Days Periods Analysis Time Horizon * Spatial representation within a single model Years Multi Years 9

SA Approach towards Option Selection Option 1 Capability: Preliminary Assessment 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 Systems Capability Modelling Requirements & Option Validation: Capacity Journey Times Power Reliability Maintenance Construction Whole life cost SPA Rail. Sys OSLO Option X Capability: Ops & Perf. Engineering Eng Policy Feasibility TIP Capacity Journey Times Power Reliability Maintenance Construction Whole life cost TRAIL Legion Option Selection 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 Rail. Sys? • Rail. Sys 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 Ver 6) • 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 KO 2 – The need for ATO Crossrail – Scheme Performance Assessment Existing Layout ERTMS – Braking Curve Proposed Layout Reading – Capacity Utilisation Index 14

SPA Process Date 00. 00 Presentation title to go here 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 Passenger Capacity System Safety Timetable Robustness Terminal Stations Line Speed & Journey Time Improvements + Presentation Generic Train Infrastructure Interface Specification + Presentation Signalling Capacity Layout Development Workshops Electrification Capacity System Capability Freight Distribution Depots Rail Maintenance Depots Layout Capacity 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) 19

Design for Reliability 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