Confederation Line LRT deploys new measures for freezing rain
Freezing rain twice knocked the LRT line out of service earlier this year.
Blair Crawford, Ottawa Citizen
Published Nov 14, 2023 • Last updated 2 hours ago • 1 minute read
With the first freezing rain of the winter, OC Transpo has begun spraying anti-ice chemicals on the overhead catenary that powers Confederation Line LRT trains. The move was one of the recommendations in an engineering report after freezing rain twice knocked the LRT line out of service earlier this year.
Richard Holder, the city’s director of engineering services, gave an update to the transit commission Tuesday morning. OC Transpo has also begun installing heavy-duty “winter carbon” scrapers on the trains that are more effective at knocking ice build-up off the overhead power lines.
The stretch of track between Hurdman and Lees stations where the Confederation Line crosses the Rideau River has been a headache during ice storms. During an ice storm last January, ice fog from the still unfrozen river amplified the ice build up from the freezing rain on the power lines. That triggered a fault that cut power to the entire system. Even when power was restored, attempts to tow two stranded trains caused even more damage when severe arcing melted the wire. The breakdowns caused a six-day partial shutdown. A freak spring ice storm in April caused a second shutdown along the same section of track.
Another issue was that without power, there was no way to tow the stopped trains from the track. Holder told councillors on the commission that the city has now acquired a diesel-powered tug that will be able to tow stopped trains even when there’s no electrical power available. The tug is currently undergoing testing and should be available for service soon, Holder said.
https://ottawacitizen.com/news/local...-freezing-rain