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Live Online Training Course:
EN50128/EN50567 Safety Critical Software In Rail (SCSR)

Live Online Training: Safety Critical Software In Rail (SCSR)

3-Part series per course | 3 hours per Part | Over 3 days
August 2020 Course: 5 August | 6 August | 7 August

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Key Learning Objectives

  • Demonstrate a sound understanding of the principles and language of Safety Critical Software
  • Appreciate software risk in the context of railway design and safety management
  • Describe how software design and the software safety lifecycle interact and influence each other
  • Appreciate how current best practice in software safety standards and in particular latest EN50128 and EN50567
  • Understand the need for a risk-based system engineering lifecycle approach to enable built-in safety, value and performance
  • Understand how to review case studies to understand the potential for things to go wrong on the railway
  • Understand the complexity of railway accidents involving software failures.
  • The demonstration of SFAIRP and compliance in regard to software.
  • Identify and mitigate Security issues from Cyber Threats

About the Course

  • This 3-Day Live Online Training course provides software developers, engineers, testers, managers and others involved in safety-related projects with a detailed understanding of the fundamentals of safety critical software development and testing. This course is supported by a competency-based structure.
  • The opening module provides background to software lifecycle and the standards and their application in the railway drawing upon best practice. The next modules introduce a number incidents where software failures resulted in incidents. The next modules go into depth regarding the content, aims and requirements for developing software for the railway in accordance with EN50128 for all SIL levels.
  • The course content is mapped to:
    • Industry standard competencies, skills and evidence requirements relevant to rail safety work
    • Industry regulations
    • National and international standards
  • Information is interspersed with practical exercises. There is a short multiple-choice examination at the end to assess the identified learning outcomes.

Who Should Attend?

Any member of staff – decision makers, project managers, line managers, engineers, designers and others – involved with changes to the railway need an understanding of the latest best practice. The course provides a structured and robust approach to developing and testing complex railway projects safely that is aligned with the LATEST CENELEC standard EN50128:2011 and EN50567:2xx for rolling stock.

Participants should have a general understanding of engineering and project management principles and practice.

Level: Fundamental Recommended Pre-requisites
Participants should have a general understanding of engineering and project management principles and practice.


Clive Osman

Consultant, Digital Rail Limited

Howard Parkinson

Chartered Engineer

Edward M Crompton

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“Nice overview presented. Howard brought a lot of technical experience with him.”
Principal, Shaktl Corp P/L

“Very knowledgeable with significant and relevant experience. Approachable and gave excellent examples of practical application.”
Manager Rollingstock Engineering, Public Transport Services

Course Outline


  • Scope of EN50128 and EN50567
  • Software Safety Route Map- Relationship between generic system development and Application development
  • Definitions as applicable to SW safety



  • Case studies of accidents related to software failures.
  • Learning from the mistakes of others:
  • Accident case study: Detailed case study caused by software errors and inadequate EDSM



  • Assigning SW Safety Integrity Level (SIL) using general process described in EN 50126
  • Competence and Responsibilities of personnel carrying out SW Safety activities.
  • Level of independence v/s SIL for SW Design / Implementation SW verification / validation.



  • SW Requirement Specification – Required properties
  • SW Architecture Techniques / Methods v/s SIL
  • SW design and Implementation – Techniques / Methods v/s SIL



  • Techniques used in building Safety critical SW (As given in Annex B of the standard)
  • Certification requirement of Tools used in SW development / Testing
  • SW verification / Testing Techniques /Methods Vs SIL



  • SW / HW Integration
  • SW Validation Techniques / Methods v/s SIL
  • SW Assessment – SW assessment Report
  • SW Quality Assurance
  • SW Maintenance
  • Systems Configured by Application Data
  • New Material – Security from Cyber Threats in software systems.
  • Conclusion

when & where

05 Aug 2020

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