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Placards!!!

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Placards!!!
Posted by MLG4812 on Wednesday, October 21, 2009 5:30 PM

Greetings,

As you watch that mixed manifest roll by, you can't help but to read the contents of tank cars. I'm just curious to know what are the scariest, most dangerous, diabolical, or "unpronounceable" contents you have ever seen in these "hotdogs" on wheels?

 Mine are:

5.) Hydrogen Peroxide (Not your brown bottle stuff! Trust me!)

4.) Molten Sulfur (The stench would be unbearable.) 

3.) Liquified Petroleum Gas (Does it really need an explanation?)

2.) Hexachlorocyclopentadiene (Don't know what it is, but I bit my tongue trying to say it.)

1.) Liquified Propane Gas (The other LPG. This stuff just rides and hangs along the ground until it reaches an ignition source..then.."WHOOM!!..Top story on the six o'clock news.)

I guess I should have titled this: "The scariest, most dangerous, diabolical, or unpronouncable contents you've seen in a tank car" but that would be too long. Big Smile

Highball (MLG4'8.5")

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Posted by route_rock on Wednesday, October 21, 2009 6:11 PM

  When I worked the hump we would see just about ever tank you can imagine.Youd see ones like you said ( how do you pronounce that and what will it do if it leaks?)sail over the hump and then a few seonds later "Kerbang".We always had those graveyard shift attitudesof" well if it ruptures and doesnt kill us at least we get an early quit"

Yes we are on time but this is yesterdays train

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Posted by edblysard on Wednesday, October 21, 2009 6:16 PM

Hydrocyanidactic acid...vinyl chloride.

I look at it this way...with the exception of some food products, if it is in a tank car, it needs to stay in the tank car because it probaly explodes, is a pollutant or is caustic, sometimes all three at once.

Although you can have fun with the argon tanks, and the carbon dioxide tanks when they vent right as they hit a grade crossing!

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Posted by henry6 on Wednesday, October 21, 2009 6:38 PM

 Not in the mix today, something quite prevelant in years gone by, is gasoline!

 But I will point out that I much rather see those placards on railroad tank cars than the truck in front of me or behind me or next to me on the Interstate!

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Posted by CShaveRR on Wednesday, October 21, 2009 7:06 PM
I think the scariest-looking stuff as it undergoes transport is ethylene. Those cryogenic tank cars require special handling, without being detached from power. And wasn't it loads of ethylene that took out N&W's Decatur yard in the 1970s?

Ed's hydrocyanic acid is something that isn't seen around here, thankfully.

We still see a few loads of gasoline from time to time.

Ed, the carbon dioxide still works on less-knowledgeable railroad employees, too! Wink

But basically, we handle all hazardous-material cars the way we're supposed to. And we haven't had a tank-car mishap in our yard in at least 37 years (we lit up the sky one night with spillover from a load of phosphorus). There's no reason for panic if everyone does his/her job.

Carl

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Posted by PNWRMNM on Wednesday, October 21, 2009 9:02 PM

CShaveRR
And wasn't it loads of ethylene that took out N&W's Decatur yard in the 1970s?

 

Decatur in the 1970's was LPG, I do not remember whether it was propane or butane.  Some switch forman got PO'ed about something and kicked a cut way too hard punctured the head of one of them which dropped the whole 30,000 gallons of liquid which vaporized into 280 volumes of vapor which found an ignition source.

Mac

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Posted by route_rock on Wednesday, October 21, 2009 9:24 PM

  We had a "thermos bottle" one of them glass lined jobs that was MTY on the hump, now we all know they dont get humped. Well as we were asking for permission to pulle back off the hump and set it out we get" Send it its an MTY" You sure about that hump??? 'Yeah positive let it go!"Okie dokie soon as it hit the throat I hear " Whoa crap" over the intercom he just realized what that car was and its out of the retarders" hehehehe it was funny. Didnt damage anything but still it was funny.

  Had an old head say that they dumped some cars one night and knew right away they had their tanks involved.Big Pwooof and a fireball.Ahh the good old days before shelf couplers.

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Posted by baberuth73 on Wednesday, October 21, 2009 9:30 PM

How about cyanide? NS handles them ocassionally- always the last car in the train, always stored on an otherwise empty track, shipped in a white tanker with a wide red stripe around its' girth.

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Posted by cx500 on Wednesday, October 21, 2009 9:52 PM

Chlorine and Anhydrous Ammonia are no fun either.  They may not explode, but you certainly don't want to inhale them.  Chlorine gas is quite a bit heavier than air so will tend to stay at ground level  where you are.

In Canada a fluke prevented what would possibly have been a massive tragedy in 1979.  A derailment in Mississauga, a heavily populated suburb of Toronto, Ontario, resulted (among other problems) in a punctured chlorine tankcar.  Three LPG tankcars BLEVE'd and others, plus Styrene and Toluene tankcars were on fire preventing any close approach for a couple of days. About 218,000 people had to be evacuated, some for nearly a week.  Probably the saving miracle here was the LPG, where either the BLEVEs or the fires created enough updraft to pull most of the chlorine several thousand feet into the air.

The derailment was caused by a hotbox on a friction bearing car, and probably speeded up the move to shelf couplers and the like on cars carrying hazardous goods.  An ironic twist is that marshalling rules in Canada were subsequently revised to prohibit placing chlorine cars next to LPG cars. Although in this case the fires prevented any close approach to the punctured chlorine car, so nothing could be done about it, the possible alternative is unthinkable.

John

 

 

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Posted by tree68 on Thursday, October 22, 2009 7:19 AM

Always fun to have available - the "Orange Book", officially known as the Emergency Response Guidebook, or ERG.  Tells you everything you need to know about how to handle the first 10 minutes of a hazmat emergency.  Like how far to run and in which direction.

In hazmat training, however, we frequently dispense with such official names as have been presented here, referring instead to "methyl ethyl awful" and "methyl ethyl death."

LarryWhistling
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Posted by caldreamer on Thursday, October 22, 2009 7:34 AM

Acrylonotrile is extremly nsaty stuff.  Flammable liquid, poison and will explode.  Reacts with just about anything that it comes in contact with.  If it burns it releases hydrogen cyanide and oxide of nitrogen funes.   Would not want to be around if that stuff started to leak.

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Posted by nbrodar on Thursday, October 22, 2009 11:10 AM

 I agree with Carl.  Ethylene is the nastiest stuff that comes through the yard.   Or maybe the Anhyrdious (sp) Ammonia cars.  Dead Sleepy  I haven't seen a Chlorine car is ages.  Thank goodness. Angel

 The CO2 cars are fun.  Especially with the new guys.  Evil

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Posted by Deggesty on Thursday, October 22, 2009 12:56 PM

MLG481/2
2.) Hexachlorocyclopentadiene (Don't know what it is, but I bit my tongue trying to say it.)

It's nasty stuff, used in making pesticides. http://en.wikipedia.org/wiki/Hexachlorocyclopentadiene http://www.atsdr.cdc.gov/tfacts112.html

It seems that the manufacture of modern conveniences that we enjoy entails the use of all sorts of compounds that we want to avoid. Take computer chips, for example. Their manufacture requires the use of arsenic (as arsine), phosphorus (as phosphine), hydrofluoric acid (bone eater), sulfuric acid, silane (crack the valve on a tank of silane, and you get a fire immediately), and a few other chemicals that you would prefer not dealing with without good protection.

Johnny

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Posted by kbathgate on Thursday, October 22, 2009 3:20 PM

CShaveRR

Ed's hydrocyanic acid is something that isn't seen around here, thankfully.

Here is an extract from the official report into a derailment in Britain in 1975, which details some of the special procedures then in force for the hydrocyanic acid (HCN) traffic between ICI plants at Grangemouth and Haverton Hill:

 

 "When acid tank wagons are included in freight trains they travel as a group, including two barrier wagons at each end, in the 'fitted head'. A maximum of five tank wagons are permitted loaded or unladen. It was also agreed that services between Haverton Hill and Millerhill Yard should include a number of wagons, the minimum length of which provided 15 'Standard Length Units' (15 standard wagons) between the rearmost tank wagon and the brake van. Although the trains are fully fitted it was decided to provide brake vans in rear so that the guard could protect the lines in rear in case of an accident. Instructions were given in September 1968 concerning advice of the movement of HCN tank wagons, and these were re-issued on 2nd November 1971 and 1st October 1975. It is the responsibility of the Area Manager Middlesbrough to advise Area Manager Newcastle by telex of the despatch of 'empty' tank wagons, who in turn should: "advise all terminal, changeover points, and signal boxes en route of all HCN movements". Hydrocyanic Acid is a clear colourless free flowing liquid having a specific gravity of 0.70 at IWC. It boils at 26°C (79°F) and freezes at - 13°C. Its vapour is slightly lighter than air, and it has a vapour pressure of about half of one atmosphere at 10°C. The acid is inflammable, and burns to harmless gases and water vapour in a manner similar to petrol. Low concentrations of the vapour can be smelt safely but although some people detect a pleasant smell similar to bitter almonds, others can smell nothing. Higher concentrations, which are highly toxic, are irritating to the mucus membranes such as the throat and cause nausea and difficulty in breathing; people may feel dizzy, their limbs may feel heavy and death may follow. The acid is highly poisonous and should liquid come into contact with the skin it can be lethal."

 

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Posted by caldreamer on Thursday, October 22, 2009 3:39 PM

 Acrylonotrile is used in the manufacture of plastics, synthetic rubber, acrylic fibers and pesticides..  ff it contacts strong oxydizers, acids, allyli or amines it undergo an explosive polymerization.  Contact with the skin witll cause reddening and blistering.   As stated above if it catches fire it will release hydrogen cyanide and oxides of nitrogen funes.   It is a know n carcer causing chemicl   I consider this more dangerous then ethylene??

 

 

 

 

 

 

 

 

 

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Posted by MP173 on Thursday, October 22, 2009 4:08 PM

As a side note....

A tank car manufacturer today told me their weekly production is 30 cars, down from 130 a year ago.

Another source said another major tank car manufacturer has no production and has laid off it's entire engineering dept.

Not much demand at this time for tank cars.

ed

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Posted by MLG4812 on Thursday, October 22, 2009 6:00 PM

The most dangerous substance shipped in tank cars today is corn syrup. It is responsible for the expansion of many of the waist lines in America.Laugh

Seriously, I believe any of the substances named that do not dissipate in the atmosphere but stay close to the ground would be the most dangerous. Even CO2 is deadly in certain concentrations.

MLG4'8.5"

 

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Posted by ericsp on Thursday, October 22, 2009 10:01 PM

From my experiences, I think there may be a misunderstanding about sulfur. I have been by molten sulfur tankcars and piles of sulfur. I have also applied 90% sulfur to vegetation. I have not noticed a stench. There is a slight smell and I doubt that there will ever be a sulfur scented perfume, but the smell is not near as bad as some people seem to think. I think you may be confusing sulfur with hydrogen sulfide.

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Posted by Kathi Kube on Friday, October 23, 2009 2:13 PM
True, demand is down, but that's not the only reason production of tank cars is down right now. I can't and don't want to give a whole lot away just yet, but there's a lot of work going on behind the scenes regarding improving tank car safety and hazmat shipping by rail altogether. Frankly, the downturn in traffic has given the industry a little breathing room to conduct studies by extending the useful life of existing tank cars through storage.

Check out the Technology Column in the January issue. I'll have more details in there.

Kathi
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Posted by BNSFwatcher on Sunday, October 25, 2009 5:08 PM

Carbon dioxide doesn't scare me.  Mix it with corn syrup and cocaine and you get "Coca-Cola".  Very dangerous!!!  Just go to Wal-Mart and see the rusults! 

I am very wary of anhydrous ammonia.  I got overcome by it, once, while planting barley with an air seeder.  Very scary, indeed.  If we have an "incident" here, I'll head for the hills!  Past haste!

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Posted by CatFoodFlambe on Sunday, October 25, 2009 9:35 PM

 BabeRuth73 - is that the same thing as Hydrogen Cyanide (HCn).   Can't remember where, but I remember hearing an old adage about it...

"It boils at 79 degrees F - if you see vapor coming from that white car with a red stripe and smell burnt almonds, you have 15 seconds to get your affairs in order". Evil

 

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Posted by penncentral2002 on Monday, October 26, 2009 4:57 PM

MLG481/2

The most dangerous substance shipped in tank cars today is corn syrup. It is responsible for the expansion of many of the waist lines in America.Laugh

Measured by number of deaths per year, beer has to be right up there.  And Coors ships beer in tank cars to Virginia.

My understanding is that based on potential disaster, the chlorine shipments to the Blue Plains sewage treatment plant in Arlington, VA is near the top due to the extremely large amounts of homes, offices, hotels, stores, etc. located nearby. 

How about jet fuel - the DOD ships it along the NCRR (NS)?

A couple dangerous substances not shipped in tank cars - nuclear waste - moves along the rails, as does nuclear fuel rods.  Actually, at least at one point, the DOD wanted to move completed nuclear weapons along the rails as mobile launch pads (one of the cars is at the Air Force Museum in Dayton, Ohio).  Apparently that never got off the ground.  But a complete nuclear weapon and the equipment to fire it, even if not kept armed would probably qualify.

Zack http://penncentral2002.rrpicturearchives.net/
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Posted by caldreamer on Monday, October 26, 2009 7:06 PM

The MX missle rail cars WERE built and active.  Each missle carried 10 independently targetable warheads..  Here is a picture of one.

 

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