The full Confederation Line will be closed starting at 6 a.m. on Saturday, with R1 replacement bus service running at the same frequency between the stations.
"This work is scheduled on a Saturday, when ridership is lower, to minimize customer impacts," OC Transpo General Manager Renee Amilcar said in a memo to council.In July, all O-Train vehicles that had travelled more than 175,000 kilometres were pulled out of service for additional inspections after a failure was discovered in one of the wheel hub assemblies on a train.
"This testing is required as part of the ongoing root cause investigation of the light rail vehicle axle hub issue," Amilcar said. In August, Amilcar said the axle hub assembly "could be or may be", related to the issue that caused an O-Train vehicle to derail in Aug. 2021.In documents filed to the public inquiry looking into Ottawa's light rail transit system, Alstom said the 2021 derailment was caused when an axle hub and its bearings failed.
"Alstom’s preliminary root cause analysis indicates that the cause of the fretting is a combination of forces arising from the track, the wheel rail interface, and the System’s operating profile," Alstom said.
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