Another Train Crash in Ohio
Another Train Crash in Ohio
(OP)
Off the wire... So much for lightning...
https://euroweeklynews.com/2023/03/05/breaking-haz...
https://euroweeklynews.com/2023/03/05/breaking-haz...
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So strange to see the singularity approaching while the entire planet is rapidly turning into a hellscape. -John Coates
-Dik
RE: Another Train Crash in Ohio
It seems it might be prudent to have an "abundance of caution” before the SHTF for a change.
--Einstein gave the same test to students every year. When asked why he would do something like that, "Because the answers had changed."
RE: Another Train Crash in Ohio
thread962-223631: Adding MTBF's
150 cars * 24 bearings per car = 3600 bearings
If we assume 1,000,000 miles per bearing failure,
(1000000/3600)= 278 miles per failure in a 150 car train. (MTBF Methiod)
I think these calculations prove a point, the axle bearings do not fail this often, so my assumption is off, but this does present the idea that as trains get longer individual components must either get much more reliable or stoppages become more frequent in terms of train miles. But probably not in ton miles.
RE: Another Train Crash in Ohio
TTFN (ta ta for now)
I can do absolutely anything. I'm an expert! https://www.youtube.com/watch?v=BKorP55Aqvg
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RE: Another Train Crash in Ohio
RAW: Drone footage shows train derailment in Springfield
Officials Give Train Derailment Update WLWT Not really anything new, relatively routine cleanup.
RE: Another Train Crash in Ohio
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Why yes, I do in fact have no idea what I'm talking about
RE: Another Train Crash in Ohio
However. I do rather think this one sorta does:
https://www.youtube.com/watch?v=pcqfa_uj2hA
spsalso
RE: Another Train Crash in Ohio
John R. Baker, P.E. (ret)
Irvine, CA
Siemens PLM:
The secret of life is not finding someone to live with
It's finding someone you can't live without
RE: Another Train Crash in Ohio
A typical rail car has four axles.
Depending on what you want to call "a bearing"
So, 8 or 16, but not 24.
RE: Another Train Crash in Ohio
-----*****-----
So strange to see the singularity approaching while the entire planet is rapidly turning into a hellscape. -John Coates
-Dik
RE: Another Train Crash in Ohio
4 axle trucks are the most common. but 6 axle trucks are used for cars above 125 ton,
RE: Another Train Crash in Ohio
I'm shocked, I tell you SHOCKED, to find that this glorious event actually happened on Norfolk Southern tracks at Memphis on September 6, 2020.
spsalso
RE: Another Train Crash in Ohio
I'm not disagreeing with the reliability physics, but the issue seems to me to be a bit moot; if the total ton-miles TM of active cars is rolling, how the cars are divvied up is irrelevant if TM remains at least the same, a minimum X number of failures will occur.
TTFN (ta ta for now)
I can do absolutely anything. I'm an expert! https://www.youtube.com/watch?v=BKorP55Aqvg
FAQ731-376: Eng-Tips.com Forum Policies forum1529: Translation Assistance for Engineers Entire Forum list http://www.eng-tips.com/forumlist.cfm
RE: Another Train Crash in Ohio
Dynamics of a train derailing (from a track defect) vs sticking to the tracks is likely influenced by both how loaded a car is and where it is in the string. This derailment in Tulsa OK resulted in the tank car hopping completely off of one of it's trucks. It looks like the car stayed on the track, but the truck ended up several feet to the rear of where it should be.
RE: Another Train Crash in Ohio
RE: Another Train Crash in Ohio
As soon as the train was parted, both halves went into emergency. The rear of the train stopped in about 100 feet. And the car behind the tank car appears to have stayed on the track.
The derailment happened earlier, before the video. What we see is a sorta small problem turn into a much bigger problem.
I would hope and expect the derailed cars would have their trucks replaced with "new" ones. Then, once rerailed, they will be pulled at a very slow speed to a repair shop for inspection and repair. The old trucks might not be damaged, but they certainly should be torn down and inspected. And since they're now apart, new bearings would be a very good idea anyway.
spsalso
RE: Another Train Crash in Ohio
The trucks likely onto a different flat car.