Blue Line derailment outside Arlington Cemetery 10/12/21

A Blue Line train has derailed outside of Arlington Cemetery station. https://twitter.com/Metrorailinfo/statu ... 5058919424

A Metro train partially derailed on the Blue Line near the Arlington Cemetery station Tuesday evening, and firefighters are working to get hundreds of passengers out of the tunnel, Metro and fire officials said.

Metro got word of a disabled train in the tunnel between the Rosslyn and Arlington Cemetery stations just before 5 p.m. A Metro worker then discovered the train partially derailed, according to Metro.

https://www.nbcwashington.com/news/loca ... wSFPCbdGzU

WJLA (ABC affiliate DC) report: https://wjla.com/news/local/train-derai ... ggy-bottom

WTOP (radio) report: https://wtop.com/dc-transit/2021/10/blu ... -stations/

Initially, there were no reported injuries, but Arlington Fire and EMS said around 8 p.m. Tuesday that one person was taken from the scene to a hospital in “stable condition.”

Blue is basically Yellow today and Arlington Cemetary is bus bridged between Roslyn and Pentagon.

WTOP reporting that NTSB is now taking over investigations.

https://www.wmata.com/about/news/Metror ... 4-2021.cfm

wonder if they think the switch contributed to the derailment

"IF" a switch caused the problem it could have been the switch point did not close all the way ? Unlikely unless maintenance neglect. Or it could have been a frog problem ? But let us just wait for NTSB preliminary.

YOLO
https://www.wmata.com/about/news/Metror ... 4-2021.cfm

wonder if they think the switch contributed to the derailment

One of the posts made by Rail Transit OPS mentioned collecting an object that may have been a from one of the cars found in the vicinity of the switch.

https://www.washingtonpost.com/transpor ... ment-ntsb/
Stuck holding brake reported by the operator, via radio, coming out of Rosslyn. Expert at the end of the article says that wouldn't normally cause a derailment.

I guess the operator was asking Metro if they should lay up at the next station??

kitchin
https://www.washingtonpost.com/transpor ... ment-ntsb/
Stuck holding brake reported by the operator, via radio, coming out of Rosslyn. Expert at the end of the article says that wouldn't normally cause a derailment.

"Holding brakes" don't magically set all by themselves. How the hell did the operator get all the way to Rosslyn from Largo with out noticing any out of normal performance of his train.

Re-reading the article, the brake was only reported stuck on one car, #7200. The radio recording is at http://openmhz.com/

More quotes from experts:

“Depending on the track-train dynamics, such a thing could cause a derailment.”

“When it’s unoccupied, that’s when they put those handbrakes on. But that should have been checked before the train ever left.”

Sand Box John wrote: ↑Thu Oct 14, 2021 9:54 pm "Holding brakes" don't magically set all by themselves. How the hell did the operator get all the way to Rosslyn from Largo with out noticing any out of normal performance of his train.

The 7Ks are unlike prior series and holding brakes apply and disengage every time a train is keyed down or keyed up. WMATA, WMSC, and NTSB would need to look at the underlying cause of the brake fault warning, which itself isn't a cause. There could have been a software issue that triggered the warning, for example.

WMSC is ordering WMATA to ground all 7K trains https://wmsc.gov/wp-content/uploads/202 ... ervice.pdf

Covered in this thread: https://railroad.net/post1582867.html

Metro is offering passengers from the de-railed train $21 in credits. https://www.nbcwashington.com/news/loca ... t/2841447/. It's so laughable I really can't even laugh.

NTSB released the public docket on this accident:

The National Transportation Safety Board yesterday opened the public docket for its ongoing investigation into the 2021 derailment of a Washington Metropolitan Area Transit Authority train in Arlington, Virginia.

The accident occurred Oct. 21, 2021, when a wheelset on rail car 7200 derailed while traveling southbound on WMATA's Blue Line between the Rosslyn and Arlington Cemetery stations. Of the 187 passengers onboard, one passenger was transported to the hospital for treatment; no other injuries were reported.

However, there was a small section relevant to the 7000 series...