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FUNCTIONAL SAFETY for RAIL VEHICLES

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​FUNCTIONAL SAFETY SCOPE

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  • Functional Safety (FuSa) management for Rolling Stock in accordance to CENELEC standards

  • Safety tools: safety plan, hazard log, FTA, FMEA, SIRF/TeSiP

  • Issue Safety Cases for implemented safety functions up to SIL 4 (EN 50129)

  • Support Independent Safety Assessments (ISA)

  • Safety-related reviews of Operational and Maintenance Manuals​

  • Consider the differences between ISA (CENELEC) and AsBo (EU 402/2013)

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​SIL DETERMINATION

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  • ​​Identify safety functions requiring explicit risk assessment with quantitative values

  • Systematic evaluation of safety functions to determine the Safety Integrity Level (SIL)

  • Determinate damage incidence rate, exposure duration and possible avoidance

  • Divide safety functions into relevant sub-functions and determine their SILs

  • Apply suitable tools and process to determinate SRAC (Safety Related Application Conditions)​

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SIRF/TeSiP - SAFETY GUIDELINE VEHICLE 

 

  • Apply SIRF method, including TeSiP annex, developed by German Federal Railway Authority (EBA)

  • Adapt and develop the SIRF/TeSiP template for project-specific purposes

  • Use of extensive database for identifying vehicle-related and project-specific hazards

  • Develop the risk mitigating measures for system engineering and operation

  • Create the SIRF / TeSiP file as a proven basis for correct application of CSM-RA (EU) 402/2013​

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​SAFETY REQUIREMENTS SPECIFICATION

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  • Defining the safety requirements to be established

  • Formulation of the defined safety requirements and the characteristics of the defined safety requirements

  • Classification into safety requirements for vehicles, operation, maintenance and infrastructure

  • Management of the transfer of the defined risk mitigation measures into defined safety requirements

  • Documentation of the defined safety requirements in approved safety requirement specifications​

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ESTABLISHMENT
OF HAZARD LOG

 

  • Hazards on the overall vehicle level

  • Hazards caused by vehicle subsystems

  • Hazards from interface vehicle to infrastructure

  • Specific hazards related to vehicle category

  • Climatic and geographic impacts

  • Definition of risk mitigation measures, categorised into technical and operational areas

  • Nomination of persons responsible for tracking and closure of the identified hazards

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DEFINITION OF SRAC
(Safety-Related Application Conditions)

 

  • ​​Identify project-specific safety-related application conditions (SRAC)

  • Analyse hazard logs and other safety files for potential SRAC and provide peer review of SRAC

  • Apply measures to reduce the number of SRAC

  • Implementation of the defined SRAC in Operational and Maintenance Manuals

  • Manage acceptance of defined SRAC by future vehicle operators

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DEFINE THE
SAFETY-RELATED SYSTEM

 

  • Specify the intended purpose of vehicle system, set assumptions for suitable limits of risk assessment

  • Specify the system functions and the relevant human, technical and operational elements

  • Specify system boundaries, including those of other interacting systems

  • Supervise the system’s physical and functional interfaces, including input and output

  • Consider the complete system environment as e.g. thermal flow, shocks, vibrations, and electromagnetic interference

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SAFETY EVIDENCE /
SAFETY CASE

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  • ​Prepare a concept of Safety Case in accordance with railway-related CENELEC standards

  • Include a list of required references as part of the Safety Case scope

  • Ensure the availability of all required references, order missing ones

  • Obtain all relevant required submissions and certificates for Safety Case on time

  • Support the negotiations with the Assessment Body (AsBo) to accept the Safety Case

AUTHORISATION OF RAIL VEHICLES

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​​​DOCUMENTATION FOR
INTEGRATION ETCS ONBOARD UNITS 
(European Train Control System)

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  • Support to meet requirements of TSI Loc&Pas and TSI CCS/CCO for assessment by NoBo and DeBo for ETCS at NEW Vehicles and RETROFIT projects

  • Support to meet specific requirements of the German regulation “Bekanntgabe 09”

  • Support system engineering to develop ETCS interfaces to meet FuSa requirements

  • Support obtaining NoBo/DeBo certificates in accordance with Directive (EU) 2016/797

  • Support to perform ESC-Process (ETCS System Compatibility) in DACH Region

  • Creation of the relevant documentation required by Assessment Body (AsBo)

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​SUBMISSIONS TO NOTIFIED BODY OR DESIGNATED BODY (NoBo / DeBo)

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  • Ensure that the documentation complies with the National Railway Authority’s checklist. Assign the items on the checklist to the appropriate technical areas.

  • Identify and document relevant standards and legals, including the effective date for the project

  • Resolving and closure the open issues documented in the drafts of the DeBo File (NoBo Dossier)

  • Definition of the valid project-related applicable TSI – e.g. TSI RST, TSI CCS,  Directives & Regulations

  • Definition of working packages (WP) and their alignment with responsible DeBo and NoBo

  • Peer review of documents prepared by the Client for submission to the Notified Body (NoBo)

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DEFINITION OF NATIONAL
TECHNICAL RULES (NTR)

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  • Check and precise the National Technical Rules (NTR) valid for the Client’s project

  • Document the project-related NTR and ensure their availability for stake holders

  • Implement the NTR’s updates, incl. recommendation for application of special tools

  • Conduct peer review and coherence checks on the project-related NTR, documentation by the created coherence matrix

  • Clarify open items with stakeholders regarding the application of valid NTR

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SUBMISSIONS TO 
ASSESSMENT BODY (AsBo)

 

  • Ensure the documentation aligns with regulations (EU) 402/2013, (EU) 1136/2018 and their amendments

  • Provide the required scope of work for CSM, requirements capture and functional safety

  • Provide coherence checks on the required inspection reports, technical dossiers and certificates

  • Collect specified user conditions and operational limitations from the results of other certifications

  • Reduce the number of iteration loops with the AsBo significantly, thereby shorten project duration

  • Support AsBo at issue of the Independent Safety Assessment Report (SAR) through providing of updated input documents

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