I'm gonna post a Cat-Video and chuckle while you guys discuss this "event"
like as if this fake movie actually has anything to do with reality.

Look at how many Train-Wrecks have happened in the last Month, it's not an accident.
( and that's just Train-Wrecks )

The only truth You will find anywhere, comes from online ""Conspiracy-Theorists"",
who repeatedly are proven right, time after time after time,
to the point of becoming almost boring.

We are smack-dab in the middle of World-War-III,
it's a War with no Bullets or Bombs,
it's an "Information-War", full of "Psy-Ops" all over the world.
And, you're probably addicted to your TV,
which, if that doesn't change,
You will ultimately become a casualty of War.

Anyone selling "fear" is the Enemy,
how many "News-Outlets" do You know of that are reporting good things ?

There are plenty of really good things happening World-Wide,
can You name even one ?
If not, I would suggest that You change who You get your "News" from.
I will gladly supply a list of Links to anyone interested in some "good-News".
But You won't find it anywhere on the TV.
.
.
.

 

You mean like this one? There are a bunch of unverified Ring Doorbell videos online but this one was verified and shown on several news outlets.

That is quite a common cause of derailments, it is called a "Hot (journal) Box" condition where the wheel roller bearing runs dry and overheats, Eventually causing seizure and consequent derailment.

 

That is quite a common cause of derailments, it is called a "Hot (journal) Box" condition where the wheel roller bearing runs dry and overheats, Eventually causing seizure and consequent derailment.

We are seeing just one more case of the news media running amok before checking their facts. There was a report on one of the main streaming news channels (NBC, CBS, or ABC -- it wasn't Fox or CNN) earlier this week reporting that in the two weeks since this accident that there were three more derailments around the country with the thrust of the story asking what was causing this increase and whether the government would take action. But had they bothered to do even a quick search they would have discovered that there have been an average of three to five derailments PER DAY for years and years -- the last couple years it has been down from about 1700/yr to around 1000/yr due to COVID, but it is climbing back up now. Derailments account for somewhere around 15% to 20% of all railroad incidents/accidents. Each year, a dozen or two result is some kind of release of hazardous materials, so one or two a month. Even these usually go unreported except at the local level.

So, if the averages hold, we can expect some rail accident somewhere to result in some level of release of hazardous materials in the next week or two and if the national news outlets get wind of it (which is a good chance because they are looking for it), it will make national news and fuel the hysteria that the sky is falling.

 

Each year, a dozen or two result is some kind of release of hazardous materials, so one or two a month. Even these usually go unreported except at the local level.

How many of those derailments caught fire and caused an evacuation? How many of those derailment COULD have been avoided if the regulations to upgrade brakes weren't rescinded?

 

what do you mean by that?

Google the derailment for Wednesday.

 

How many of those derailments caught fire and caused an evacuation? How many of those derailment COULD have been avoided if the regulations to upgrade brakes weren't rescinded?

What's your point? That the news media making a big deal out of there being three derailments in the two weeks since the accident is accurate reporting of an alarming increase in such incidents? Or that if the regulations hadn't been rescinded that this train (which wasn't subject to those regulations) wouldn't have derailed?

 

How many of those derailments caught fire and caused an evacuation? How many of those derailment COULD have been avoided if the regulations to upgrade brakes weren't rescinded?

That's a good question except...

1. That Ohio derailment didn't catch fire, it was a controlled burn, but of course one could consider that a technicality.

2. You have to narrow down the question to how many derailments could have been avoided of qualified trains due directly to lack of the upgraded brakes?

I would like to know the answer, but I suspect if there were even a single one, we would have heard about it.

AJFTR I'm the last person on earth who would defend you know who, I just like dealing with facts.

 

That's a good question except...

2. You have to narrow down the question to how many derailments could have been avoided of qualified trains due directly to lack of the upgraded brakes?

On a related note, see Post #4 https://forum.allaboutcircuits.com/threads/course-on-railway-engineering.110026/#post-848372
These were older Ohio Rail Loco's, but we had to fit Dynamic braking to accompany the air brakes for use in the Can. Rockies.

 

I would like to know the answer, but I suspect if there were even a single one, we would have heard about it.

AJFTR I'm the last person on earth who would defend you know who, I just like dealing with facts.

Why? It wasn't just brake regulations that were rolled back. If you look at the whole picture of facts.

 

https://www.physicsforums.com/threa...e-ohio-3-feb-2023-engineering-aspect.1050279/
NS Derailment, East Palestine, Ohio - 3 Feb, 2023 - Engineering Aspect

 

Why? It wasn't just brake regulations that were rolled back. If you look at the whole picture of facts.

Only because that's the regulation everyone is focusing on, and the one you mentioned in your post.

 

vinyl chloride is a highly hazardous product, with maximum permissible dose of 1ppm per 8h.

That is not supported by its MSDS... i.e. it's material safety data sheet. Has anyone taken the time to even read it? https://fscimage.fishersci.com/msds/76785.htm#:~:text=MSDS Name%3APoly%28vinyl chloride%29%2C high molecular weight , Chlorethylene polymer%3B Vinyl chloride polymer%3B Poly%28chlorethylene%29

 

 

Am I mistaken or is this not what is melted and extruded into PVC (poly vinyl chloride) pipe? Hardly a hazardous material, which the MSDS states, and what supplies the water in most homes.

 

Am I mistaken or is this not what is melted and extruded into PVC (poly vinyl chloride) pipe? Hardly a hazardous material, which the MSDS states, and what supplies the water in most homes.

If I understand correctly, it's one of the base materials for producing PVC. Hence the "vinil chloride" ... and anything with chlorine in it cannot be innocuous.

 

Am I mistaken or is this not what is melted and extruded into PVC (poly vinyl chloride) pipe? Hardly a hazardous material, which the MSDS states, and what supplies the water in most homes.

It's the monomer which is polymerized into PVC. It's not pleasant:

https://www.cancer.gov/about-cancer/causes-prevention/risk/substances/vinyl-chloride

https://www.osha.gov/chemicaldata/566

 

That Ohio derailment didn't catch fire, it was a controlled burn,

that's a major misunderstanding of people late to the party.
In the initial crash, there was fire as several railcars



here's a local newscast one day later when the initial fires of the crash were still burning. The four cars of vinyl chloride were slowly heating as they started to polymerize in the tankpers. 10 other cars filled with vinyl chloride were not exposed to the heat of the initial fires so the vinyl chloride inside did not start reacting in the tanker.
https://www.wkyc.com/article/news/l...stine/95-e196ec7a-23b6-4a6d-b1f1-5448615c2dc7

The controlled burn was done to relieve the building pressure as the exothermic polymerization reaction slowly proceeded. If left to "cool on its own" as some proposed, the polymerization would continue and temp would rise - and the reaction "rate" increases with temperature (reaction rate is number of vinyl chloride molecules reacting with the growing oligomeric PVC per second). As you can see, this heat expelled with each vinyl chloride molecule reacting raises the temperature and causes the tank to heat and react faster, you eventually get to thermal reunaway and the tank explodes - and, will spew vinyl chloride monomer everywhere. So a controlled burn was the best of the bad options that could be selected to deal with the situation.

in the end, there was fire during the derailment. Then, several days later, there was a controlled burn.

Below is an example of an out-of-controlled burn of East Palestine.

 

I stand corrected.

 

A recent one here,! https://en.wikipedia.org/wiki/Lac-Mégantic_rail_disaster

 

How many of those derailments caught fire and caused an evacuation? How many of those derailment COULD have been avoided if the regulations to upgrade brakes weren't rescinded?

While I totally agree that an updated brake system could help in instances would it really detect a seized bearing? Is it going to be a system that has "wheel speed sensors" much like an ABS system, or just something that varies the line pressure in each car's system?

A few years back not far from me a derailment happened due to a loose chain catching a switch handle and moving the switch gear. Luckily it was just dry freight and nothing to worry about other than an entire village being cut in half for a couple days. I stayed out of the way and didn't investigate, but from what I know you had to drive in a "U" shape to get from the north end of town to the south end for most of the town.