For all of You Train Lovers

[Photon440]

 

[Photon440]

 

[Photon440]

 

[Photon440]

This is what happens when you pump out a tank car but forget to open a relief vent to prevent vacuum buildup.

 

[j-c-c-62]

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Pictured at the Transportation Museum in St louis

 

[YY1]

This is what happens when you pump out a tank car but forget to open a relief vent to prevent vacuum buildup.
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I've seen that done to food grade tank trucks on purpose.

Because there was a roach problem at the unloading facility and the stainless steel trailer was "only" worth $60,000 but the cargo was worth $700,000 and a production schedule.

To be fair, most of them only got small implosion dents here and there, but some did crush pretty well down, making them unusable.

 

[j-c-c-62]

This is what happens when you pump out a tank car but forget to open a relief vent to prevent vacuum buildup.
View attachment 1722491

Are those videos in real time? They weren't on train tracks when imploded, correct?
It is interesting I believe how apparent it is how much stronger/thicker the tank car end caps are proven to be in these videos, being they are designed to resist puncture damage in train mishaps.

 

[Photon440]

Are those videos in real time?
It is interesting I believe how apparent it is how much stronger/thicker the tank car end caps are proven to be in these videos, being they are designed to resist puncture damage in train mishaps.

Yes, real time. The internal pressure drops until it reaches the tipping point and rapidly collapses. Sometimes the whole car jumps up, including the wheels. I would imagine that a submarine that exceeded it's pressure depth could implode with the same rapidity.

The end caps aren't thicker than the walls of the tank, the outward convex shape adds some strength. By regulation, these tank cars have a minimum wall thickness of 7/16 inch, or 11.1 millimeters to comply with DOT-111 tank car rules.

 

[j-c-c-62]

Yes, real time. The internal pressure drops until it reaches the tipping point and rapidly collapses. Sometimes the whole car jumps up, including the wheels. I would imagine that a submarine that exceeded it's pressure depth could implode with the same rapidity.

The end caps aren't thicker than the walls of the tank, the outward convex shape adds some strength. By regulation, these tank cars have a minimum wall thickness of 7/16 inch, or 11.1 millimeters to comply with DOT-111 tank car rules.

Thank you.
At my recent visit to the extensive train exhibit in St Louis, the posted signage on tanker cars mentioned over the years they had upgraded the end cap requirements on tankers for reasons I mentioned, I don't recall if that also included the entire tank. This wood steel strapped tanker also caught my eye.

 

[Photon440]

Thank you.
At my recent visit to the extensive train exhibit in St Louis, the posted signage on tanker cars mentioned over the years they had upgraded the end cap requirements on tankers for reasons I mentioned, I don't recall if that also included the entire tank. This wood steel strapped tanker also caught my eye.

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That's an interesting wooden tank car. These days vinegar is transported in standard tanks lined with plastic, or stainless tanks.