'Heat Kink' Likely Cause Of Metro Derailment | WAMU 88.5 - American University Radio

WAMU 88.5 : News

Filed Under:

'Heat Kink' Likely Cause Of Metro Derailment

Friday’s train derailment on the Green Line shut down service between Fort Totten and Prince George's Plaza stations.
http://www.flickr.com/photos/39017545@N02/3841738134/
Friday’s train derailment on the Green Line shut down service between Fort Totten and Prince George's Plaza stations.

Metro investigators say Friday's train derailment on the Green Line was likely caused by a misalignment of the rails, known as a "heat kink."

The incident occurred near the West Hyattsville station where three cars on the Green Line train derailed around 4:45 p.m., as the train entered a tunnel from an outdoor section of track. There were no reported injuries, and riders on the affected train evacuated safely, according to Metro officials.

The derailment shut down service between Fort Totten and Prince George's Plaza, causing significant delays for riders during the evening commute home. Shuttle buses substituted for trains in those areas.

Following the derailment, Metro imposed an immediate 35 mph speed restriction on trains operating in all above-ground territory, which caused delays on all other lines as well.

Heat kinks are short sections of misaligned track caused by the expansion of metal rails in extremely high temperatures. Metro officials say they are continuing to investigate whether any other factors were involved in the incident.

Green Line service between Fort Totten and Prince George's Plaza will remain suspended throughout the day Saturday as Metro crews work to repair the damaged track. During the maintenance, shuttle bus service will continue to operate between Fort Totten, West Hyattsville and Prince George's Plaza stations.

Track work on all other lines has been canceled this weekend.

WAMU 88.5

Art Beat With Lauren Landau, June 3, 2015

A play and an exhibit explore luxury, power and how women present themselves and are perceived.

NPR

Grass Gourmands: A Herbivore Food Mystery On The African Savanna

A new study sheds light on a longstanding ecological question: How do so many species like impalas and elephants co-exist when they're all feeding on the same limited foods?
NPR

Sen. Menendez's Corruption Trial Hasn't Begun, But Legal Sparring Has

The Justice Department indicted the New Jersey Democrat just two months ago on bribery and conspiracy charges. But lawyers in the case already seem to be getting under each other's skin.
NPR

Experts Debate: Will Computers Edge People Out Of Entire Careers?

Machines have been taking jobs forever. Computers and software are doing things people were paid to do. They are booking airplane flights. Filing our taxes. And they are getting better all the time.

Leave a Comment

Help keep the conversation civil. Please refer to our Terms of Use and Code of Conduct before posting your comments.