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RTG, Alstom haven't agreed on LRT solution

'We are, I believe, within weeks of getting to a root cause, but we are not at root cause yet'


Barrhaven West Coun. David Hill listens to Alstom's vice-president of rolling stock David Van der Wee during a transit commission meeting Thursday. (Arthur White-Crummey/CBC)

Rideau Transit Group (RTG) says it still doesn't fully understand the root cause of LRT bearing issues and is reviewing recommendations from train-builder Alstom that would require a shutdown of the system.

Alstom says it has a plan to reduce forces that are putting pressure on wheels and loosening bearings, an issue linked to a 2021 derailment and the summer shutdown this year. But RTG isn't yet completely on board with its plan.

"We are, I believe, within weeks of getting to a root cause, but we are not at root cause yet," said RTG head Nicolas Truchon.

He said RTG and Alstom agree that components are coming loose in the wheel assembly, but don't yet agree on why that's happening.

David Van der Wee, a vice-president of rolling stock and components for Alstom in North America, said the company submitted a 1,000 page report and believes that it does identify the cause.


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