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2020/08

Report on derailment at Bryn station on the Hovedbanen line on 25 September 2019

On Wednesday 25 September 2019, a locomotive travelling as part of a train derailed at Bryn station. The locomotive was enroute from Sundland to Hamar to undergo maintenance. At Bryn station there was a height misalignment in the track, which Bane NOR SF was aware of. Repairs of the fault had been planned, but the contractor found the ballast to be of too poor quality to be packed. In addition to the height misalignment, the rail head was worn. The Norwegian Safety Investigation Authority (NSIA) have found several factors that contributed to the derailment to varying degrees. The NSIA submits one safety recommendation to Bane NOR SF that focuses on following up the maintenance regime so that concurrent track faults are identified.

The derailed locomotive had three axles attached to a stiff frame, and the distance between the axles was short. This meant that it had poorer running characteristics than other rolling stock, both for negotiating curves and for handling misalignments and faulty tracks.

2019-09-25 1

2019-09-25 2
Photo: Bane NOR SF

Published 28.08.2020

Safety recommendation

Safety recommendation JB no 2020/09T

On Wednesday 25 September 2019, a locomotive travelling as part of a train derailed at Bryn station on the Hovedbanen line. The train derailed in a curve due to a track fault that had developed over time. The track fault consisted of both height misalignment and warping, neither of which Bane NOR SF considered to be critical when looked upon separately.

The Norwegian Safety Investigation Authority recommends that the Norwegian Railway Authority request Bane NOR SF to ensure that the maintenance system addresses concurrent track faults.

Facts

Location Bryn station
Occurrence date 25.09.2019
Train No 8350
Type of Transportation Freight train
Type of occurrence Derailment
Rolling Stock Shunting Unit

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