When it is needed
When doubts concern track condition, rolling stock repairs, signalling, interlocking and block systems, or a technical explanation of an event.
What we examine
- Report and appendices
- Records and calculations
- Original technical recordings
Materials to prepare
- Complete document text
- Questions posed
- Documentation applied
- Source materials and observations
Sample questions
- Does the examination's specialism match the task?
- Can the source data be checked?
- Are the methods and regulatory grounds applicable?
- Were alternatives and limitations considered?
- Do the findings follow from the results obtained?
How the work is carried out
- Checking the task and sources
- Analysis of the method and calculations
- Reasoned observations
Result
A review explaining the technical significance of identified deficiencies and setting out questions for further checking.
What affects the conclusions
The asset determines the reviewer's specialism; a general transport specialism does not automatically cover every system.
Frequently asked questions
Can only the signalling, interlocking and block system be checked?
Yes, where the relevant original diagrams, logs and calculations are available.
Does a review include a new inspection?
This is usually a separate stage arranged when field data are needed.