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Crossrail Train Protection (Plan B) - Railway Safety Regulations 1999 Exemption Application Report

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Crossrail Train Protection (Plan B) - Railway Safety Regulations 1999 Exemption Application Report Doc Ref: PPA1A ESG REP NCA 000001 Version A03 Crossrail Programme №: Investment Date: 26th Aug 2015 Projects Crossrail Train Protection (Plan B) - Railway Safety Regulations 1999 Exemption Application Report Page 1 Doc Ref: PPA1A ESG REP NCA 000001 Version A03 Crossrail Programme №: Investment Date: 26th Aug 2015 Projects 1 Executive Summary This report explains the reasoning and justification supporting Network Rail’s application in association with Crossrail Limited and MTR Corporation (Crossrail) Limited for an exemption from the requirement under Regulation 3 of the Railway Safety Regulations (1999); that a train should be fitted with a train protection system (as defined by Regulation 2). This exemption applies between Paddington and Airport Junction on the Western Mainline where it is proposed the Train Protection will be provided by ‘Enhanced TPWS’ until European Train Control System (ETCS) is available. The exemption applies only to Crossrail services and will only be utilised should ETCS not be available for the start of Crossrail passenger operations between London Paddington and Heathrow Airport. The planned Crossrail service with new Class 345 trains will offer significant passenger benefits outside of those considered within the Regulations making delivery of the Crossrail service a significant priority. Delivery of ETCS, that will be fully compliant with the Railway Safety Regulations (1999) in time for the passenger operation of Crossrail services remains the primary objective of NR and CRL, this is Plan A. A number of potential risks exist in delivering ETCS (Plan A) in the area between Paddington and Heathrow Tunnel Portal. Factors considered to increase the likelihood of delay to Plan A delivery include: • Supplier /staff availability; • Limited delivery experience of ETCS in the UK; • Delivery in an area undergoing significant modification; and • Existing complexity of rail infrastructure in the area. For the reasons above a fall-back option (Plan B) has been developed in line with Network Rail’s Governance of Railway Investment Projects (GRIP) and the Common Safety Method for Risk Evaluation and Assessment (CSM RA) framework (the European risk management process for the rail industry). To inform us in reviewing and selecting options we developed system definitions for all options in line with ORR guidance. In development of the Plan B proposal we have – • Developed a wide range of initial options for appraisal (including legally compliant options) on the basis of technical and operational limitations; • Analysed each option against clear objective criteria; • Undertaken a comparison of Great Western Automatic Train Protection (GW-ATP), TPWS and ETCS functionality; • Developed an ‘Enhanced’ TPWS application capable of producing a comparable level of protection to existing GW-ATP for the Class 345 Crossrail trains; and • Undertaken extensive stakeholder engagement. From the range of initial options it was concluded that Enhanced TPWS offered the most viable solution for Crossrail operation as it would – Page 2 Doc Ref: PPA1A ESG REP NCA 000001 Version A03 Crossrail Programme №: Investment Date: 26th Aug 2015 Projects • Control similar levels of overrun protection for Crossrail services; • Provide additional overrun protection for other services using TPWS; • Offer a known and proven technology; and • Be deliverable in parallel with ETCS without impacting the timescales. A comparative train protection effectiveness assessment between GW-ATP and Enhanced TPWS was carried out. Extensive review, evaluation and quantification of the levels of safety offered by each option have been performed. Enhanced TPWS has been found to offer a similar level of signal overrun protection to the current GW-ATP/TPWS arrangements. Enhanced TPWS will provide benefit to more trains in the area, and as a result safety of the area as a whole is expected to show improvement. Following analysis, our Plan B proposal is that with the provision of additional Train Protection Warning System loops (Enhanced TPWS) we can achieve a robust and deliverable fall-back option for the area between Paddington and Heathrow Tunnel Portal in the event that Plan A is unable to be delivered according to the Crossrail service schedule of activities. Network Rail and Crossrail are keen to progress this application for exemption with the ORR, and will fully participate in any industry consultation that the ORR considers appropriate to ensure the best outcome for users of, and stakeholders in, the rail network. Network Rail and Crossrail remain totally committed to Plan A; e.g. to deliver ETCS for Crossrail operation. The Office of Rail and Road is requested to grant a certificate for temporary exemption under Regulation 6 of the Railway Safety Regulations 1999 in respect of the train protection requirements of those Regulations. This is necessary to support the back-up plan developed as an abundance of caution in view of the schedule risk associated with Plan A. This exemption would be required to permit operation of Crossrail Class 345 rolling stock from 20th May 2018 to 31st December 2019 on the area of Western route below should ETCS not be available in readiness for initial operation: • Paddington Station to Heathrow Airport Junction (0mp to 11m52ch), and • Heathrow Airport Junction to Heathrow Tunnel Junction (11m 13ch to 12m 27ch). Network Rail August 2015 Page 3 Doc Ref: PPA1A ESG REP NCA 000001 Version A03 Crossrail Programme №: Investment Date: 26th Aug 2015 Projects Contents 1 Executive Summary ....................................................................................................... 2 2 Introduction .................................................................................................................... 6 2.1 Purpose .................................................................................................................. 6 2.2 Scope ..................................................................................................................... 6 2.3 Timescale ............................................................................................................... 6 2.4 Abbreviations and Definitions .................................................................................. 7 3 Background .................................................................................................................... 9 3.1 The Crossrail Route (overview) ............................................................................... 9 3.1.1 Crossrail Service Introduction .......................................................................... 9 3.1.2 Crossrail Central Operating Section ............................................................... 10 3.1.3 Crossrail Route Train Protection .................................................................... 10 3.1.4 Crossrail Trains .............................................................................................. 11 3.2 Exemption area (Overview) ................................................................................... 13 3.2.1 Paddington to Heathrow - Train Protection .................................................... 14 3.3 Regulations ........................................................................................................... 15 3.3.1 History ........................................................................................................... 15 3.3.2 Relevant Regulations ..................................................................................... 15 3.4 Train Protection Systems ...................................................................................... 17 3.4.1 TPWS – what is it?......................................................................................... 19 3.4.2 GW-ATP - what is it? ..................................................................................... 20 3.4.3 ERTMS/ETCS - what is it? ............................................................................. 22 3.4.4 CBTC – what is it? ......................................................................................... 24 3.5 Train types & Services .......................................................................................... 26 4 Train Protection Plan B ................................................................................................ 29 4.1 Plan B – why is it required? ................................................................................... 29 4.2 Plan B Option Development and Selection (Process) ........................................... 30 4.2.1 Governance of Railway Investment Projects (GRIP) ...................................... 30 4.2.2 Common Safety Method for Risk evaluation and Assessment (CSM RA) ..... 31 4.2.3 Options Development .................................................................................... 31 4.2.4 Options to extend CRL CBTC System (CBTC Overlay) ................................. 31 4.2.5 GW-ATP/ETCS/TPWS system comparison ................................................... 32 4.2.6 Developed Options ........................................................................................ 34 4.2.7 Initial Options Selection ................................................................................. 35 Page 4 Doc Ref: PPA1A ESG REP NCA 000001 Version A03 Crossrail Programme №: Investment Date: 26th Aug 2015 Projects 4.2.8 Options Discounted at Initial Options Selection .............................................. 35 5
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