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Derailment Investigation

Course Aims

This course is intended to provide a delegate with an in-depth knowledge of the types and causes of derailments, their prime categories and the methodology behind prime and secondary causes.
The delegate will also be given a comprehensive understanding in the processes of derailment investigation for both Plain Line and S&C, together with the techniques for evidence gathering and reporting.


2 days

Learning Objectives

At the end of this course the delegate will have: -

  • Be aware of the derailment risks and consequences
  • Be aware of the lessons learnt from previous derailments
  • Have a clear understanding of how derailments occur
  • Have a clear understanding of the courses and categories of derailment, including:-
    • Track
    • Vehicle
    • Operating and Marshalling
    • Human Error
    • Other Causes
  • Have an understanding of the risks of derailment on Renewal sites
  • Have a clear understanding of the risk of derailment in Plain Line track
  • Have a clear understanding of the risk of derailment in S&C, including:-
    • Risks at Hand Points
    • Risks at Switches
    • Risks at Crossings
    • Geometry Faults in S&C
    • Other risks
  • Be aware of the vehicle forces relating to derailments
  • Be aware of the interaction between the wheel and the rail and the flange climb
  • Have an understanding relating to the analysis of track faults, including:-
    • Network Rail Standards
    • Twist
    • Cyclic Top
    • Gauge
  • Other Geometry Faults

Pre Requisite Requirements

The following pre-requisites are required:
• Prior experience in working within the track environment
• An in-depth knowledge of the Track Structure and its components

PPE Requirements

Personal Protective Equipment is not required on this course


A Certificate of Attendance will be awarded to the delegate upon successful completion of the course. Certification has no expiry.