Korea: High-speed rail KTX train, why derail?
-Possibility of vehicle body defects rather than external impact-
Korea Train Express
KTX train
The KTX train derailed.
It happened near the Yeongdong tunnel in Chungcheongbuk-do, almost in the center of South Korea.
Possible vehicle defects:
The cause of derailment is more than the external impact
It seems that the cause is a defect in the vehicle itself.
That possibility is seen as promising.
At the beginning of the accident, it was suspected that the cause was a fall collision in the tunnel.
Ministry of Land, Infrastructure and Transport of Korea
Aircraft and Railway Accidents Investigation Commission
January 6th,
The Aircraft and Railway Accidents Investigation Commission of the Ministry of Land and Resources is investigating the cause of derailment through on-site inspections and vehicle inspections.
On-site confirmation of the investigation committee:
As a result of the investigation committee confirming the site,
It turned out that no such fallen object was found in the tunnel.
It can be interpreted that the cause of the accident estimated at the beginning means that the credibility is reduced.
Discover wheels in another tunnel:
Instead, the derailed wheel of Car 4 was found in the Aotan tunnel, about 3 kilometers back from the accident site.
Estimated by another evidence:
This changed the situation of the cause of the accident.
It is said that evidence and debris of the train derailing were found near the Akinada tunnel.
The wheel of car 4 came off first, which detected an abnormality,
Due to the emergency braking on the running train
There is a presumption that it may have derailed.
KORAIL (Korail Corporation):
KORAIL is in charge of vehicle maintenance.
After delivery of the accident train
Light maintenance was done at KORAIL,
It was confirmed that “heavy maintenance has not been done yet”.
“To date, I have never replaced the wheels of a train,” he said.
Joongang Ilbo
https://s.japanese.joins.com/JArticle/286457?sectcode=430&servcode=400
Korea Train Express KTX, iron structure falls inside tunnel … Train derails | Joongang Ilbo
https://s.japanese.joins.com/JArticle/286373?sectcode=430&servcode=400