Mansfield Train Derailment Caused by Broken Wheel Rim, Records Reveal

The recent derailment of a train carrying hazardous materials near the Willimantic River has raised significant concerns regarding rail safety. This incident occurred on February 5, when a train belonging to the New England Central Railroad derailed along Route 32.
Mansfield Train Derailment Overview
Deputy Chief Kevin Danielson of the Mansfield Fire Department expressed apprehension upon arriving at Spring Brook Farm. Ten train cars were scattered, some located dangerously close to the river. Fortunately, despite initial fears, no liquefied petroleum gas (LPG) was reported to have leaked from the derailed cars.
Cause of the Derailment
The derailment was traced back to a broken wheel rim that affected the 31st train car. Investigations revealed that the train was traveling at nearly 40 miles per hour when the rim failed. Allan Zarembski, a professor and director of the Railroad Engineering and Safety Program at the University of Delaware, noted that this rim endures significant stress during operation.
Impact of the Incident
- Six of the derailed cars were transporting hazardous materials.
- Four of those cars ended up in the river but did not spill any dangerous cargo.
- Approximately 1,500 gallons of grease leaked from one of the other cars.
Cleanup required extensive excavation efforts to manage the grease contamination, although air and water quality monitoring indicated no long-term threats to public health or the river ecosystem.
Rail Safety and Prevention Measures
Despite the alarming nature of derailments, Zarembski highlighted that they are relatively rare in the U.S., noting the impressive safety record of the railway industry. Modern tank cars are equipped with additional protective measures, reducing the likelihood of hazardous material releases during accidents.
Future Precautions
Freight railroads in the U.S. are mandated to transport hazardous materials responsibly. NECR emphasizes stringent safety inspections that often surpass Federal Railroad Administration standards. Furthermore, local agencies conduct derailment training to ensure preparedness in emergencies.
- The Mansfield Fire Department was in the process of scheduling another training session with NECR before the derailment.
- All firefighters in Mansfield possess hazmat training, with some receiving specialized education on managing hazardous spills.
Community Response and Cleanup Efforts
The involvement of local stakeholders, particularly the farm owners, played a crucial role during the cleanup. The train’s route through Spring Brook Farm created challenges for responders, necessitating the use of adjoining fields for cleanup operations. The collaboration between the fire department and farm proprietors ensured efficient management of the situation while prioritizing safety.
As investigations continue, local authorities emphasize the importance of rail safety and the measures needed to prevent future incidents similar to the Mansfield train derailment.




