Freight Train Derailment in Greater Manchester: Investigative Findings and Recommendations
A freight train derailment occurred in Audenshaw, Greater Manchester, at approximately 11:25 on 6 September 2024, affecting 9 out of 24 heavily loaded wagons. While no injuries were reported, the incident resulted in significant damage to railway infrastructure and led to an eight-week closure for repairs.
Details of the Incident
The derailment was precipitated by a loss of track gauge integrity, causing the wheels on one side of the train to drop from the rails. The railway bridge involved utilised a longitudinal bearer system (LBS), an arrangement where rails are fixed to timber bearers instead of the traditional sleeper and ballast system.
Investigations revealed that several screws fastening the baseplates to these bearers had suffered fatigue damage prior to the train’s crossing. Evidence indicated a history of similar screw failures at the same locations, with prior incidents dated back to before 2020. However, many maintenance records were found to be incomplete or missing.
Investigation Findings
The Rail Accident Investigation Branch (RAIB) conducted an in-depth analysis, concluding that the screws were never intended to endure the ongoing stresses imposed on them in their current configurations. Although loads from passing trains remained within permissible limits according to Network Rail standards, increased traffic since 2015 had heightened the screws’ fatigue rates.
Furthermore, the RAIB noted that the existing inspection processes by Network Rail—the organisation responsible for railway infrastructure—were inadequate in detecting such failures. Both automated and manual inspections failed to identify the vulnerabilities in the screws, and previous screw failures had not been accurately documented or reported by the maintenance team, further compounding the oversight.
Underlying Issues
The investigation identified two critical underlying issues:
- Network Rail lacked effective management procedures for LBS assets, particularly relating to design assurance, installation, and maintenance.
- Failures in communication and record-keeping had allowed for previous screw failures to go unreported, which were not rectified by Network Rail’s oversight mechanisms over several years.
Recommendations for Improvement
In response to these findings, the RAIB has issued eight recommendations aimed at improving safety and inspection standards for LBS assets. Key suggestions include:
- Enhancing the assurance processes for component design and installation.
- Improving the overall management and maintenance of LBS systems.
- Ensuring better training and competence for staff overseeing these assets.
- Establishing more effective collaboration between teams managing track and structural assets.
- Reviewing the influence of LBS structural conditions on track performance.
- Adjusting assessments of rail traffic impacts on LBS assets and updating related protocols.
- Updating records of LBS configurations nationwide.
- Strengthening assurance processes to ensure accurate documentation of maintenance activities.
Why This Matters
This incident highlights significant gaps in safety management and infrastructure oversight within the UK railway network. As rail transport is a critical component of the UK’s transport infrastructure, ensuring the integrity of its operation is vital for public safety and operational reliability.
Source: official statements, news agencies, and public reports.
https://www.gov.uk/government/news/report-102025-derailment-of-a-freight-train-at-audenshaw
