California firefighters had to douse a flaming battery in a Tesla Semi with about 50,000 gallons (190,000 liters) of water to extinguish flames after a crash, the National Transportation Safety Board said Thursday.
In addition to the huge amount of water, firefighters used an aircraft to drop fire retardant on the “immediate area” of the electric truck as a precautionary measure, the agency said in a preliminary report.
Firefighters said previously that the battery reached temperatures of 1,000 degrees Fahrenheit (540 Celsius) while it was in flames.
The NTSB sent investigators to the Aug. 19 crash along Interstate 80 near Emigrant Gap, about 70 miles (113 kilometers) northeast of Sacramento. The agency said it would look into fire risks posed by the truck’s large lithium-ion battery.
Our town had to use an excavator and dozer to bury a Tesla car because it wouldn’t stop burning.
I read in a firefighter’s thread that the trick is to use a low pressure spray directly on the battery compartment. (It was a thread about Tesla cars not semis though so that might not apply)
The reason was you can’t actually put the fire out, it’s self oxidizing (it can literally burn underwater) so you basically need to wait till it burns itself out. Fortunately batteries only hold something like 1/10th the energy of gasoline and can’t release that energy as quickly so a fine light spray is enough to keep it from getting hot enough to catch anything else on fire including batteries in the surrounding battery modules.
Takes a long time, like hours to get it to a point they can move the vehicle and literally a couple weeks before the reaction completely fizzles out. They have special lots they tow them to where the car can fizzle itself out without damaging anything surrounding it.
Is this 190 tons of water?
189.27 metric tons of water, so yes, rounded up, 190 tons.
Or roughly 2.5 average swimming pools and for those ex-redditors out there: 1.6 million bananas
Something tells me that we have to move away from cobalt/manganese chemistries for BEVs.
How are you getting 189.27? 1 liter is 1kg, so it should be 190 precisely.
Because we are discussing metric tons of water where 264.17 US gallons = 1 metric ton of fresh water @ 4’C
What size is an average swimming pool area-wise? Or are you talking about Olympic size swimming pools?
removedant?
lol
Probably only shows up that way on lemmy.ml, which has a blocker for various things they consider slurs, which can become silly when you’re dealing with words/phrase like “fire retardants.” Looks normal to me over on blahaj, and the same over on lemmy.world
And morons keep buying Teslas.
It really seems like Elon Musk has been given free reign to kill people.
Good point. I’m not sure. It may be that we’re (I’m) hearing more about Teslas catching fire because they’re the largest distributor in the US (and I live here). However, they’re not the largest in the world and I haven’t heard of this problem happening with other EVs (though they may be).
Regardless, Elon Musk is a pompous charlatan and defrauder that deserves much worse than he’ll ever get. Bias be damned.
Wow, you should look into the hundreds of ev car fires in China that happen for may more reasons than crashes. Such as charging the battery and just sitting there in traffic or just sitting in an ev car lot. BYD is one of the largest ev brands in China, and their shit just catches fire for no reason some times.
You don’t hear about them because Western media doesn’t make as big a deal about them.
If you can throw the word Tesla or Elon on something it gets plastered everywhere, including here.
Same with recalls.
Tesla recalls something software related like the unbuckled seat belt chime not working if you do steps A B then C and its huge news. Within the next 2 weeks 5 or 6 other major OEMs do recalls and you barely hear about it. And yes, recalls happen in groups like that where other OEMs wait for someone to go first and take the bigger hit.
It’s any lithium battery, not just one evil villain. At least you’re not recharging your car inside the living space of your house, like your computer or phone or e-bike or e-scooter or vacuum cleaner
Personally I think there’s a market for a fire proof container for charging batteries. I’ve been thinking about stacking cinder blocks in my basement for charging yardcare and tool batteries such that they couldn’t catch anything just in case
This is not a Tesla problem. This is electric vehicle problem.
My local fire department once had to put out the same VW Buzz 3 times because it kept re-igniting. Nowdays they have containers filled with water that they completely submerge electric vehicles into that had caught fire.
It’s a Tesla problem in that it is a bumrushing tech that hasn’t matured for what it’s being used for because profit motive.
And no, if the tech isn’t mature to be both useful AND safe in the event of failure operating in the world, it belongs in the lab, not up for sale.
We shouldn’t be mass producing any vehicles that become bombs/environmental disasters that standard fire and rescue can’t appropriately address with reasonable tools upon crashing, because they inevitably will.
Its a market capitalism problem. Fire, ready, aim because rush the pos to sale. Musk is certainly a standard bearer as a prominent “get government and society’s wellbeing out of the way of my quarterly profit expectations” asshole sociopath capitalist.
We don’t have time to perfect and mature the tech though. That was 40 years ago. Now it’s whatever fucking works that isn’t fossil fuels and burning of them. It’s a damn sight safer than an ICE which is actually carrying extremely combustible liquids in it too. It’s not perfect but it’s better and this kind of " we have to hold off" is effectively supporting the status quo which is fuckig everything up as it is.
Maybe don’t use water to put out a fire that can’t be put out with water. Aren’t these supposed to be professionals?
Flooding the batteries with water is the best way to put out a lithium-ion battery fire.
Maybe for smaller things, a regular car maybe.
But by the time a suitable digging machine arrives on scene and digs a big enough hole for a semi it’d probably be faster to flood it with water. Not to mention what might be underneath the ground, so they’d also have to spend time determining if there’s any gas lines or whatever before they dig so they don’t make a much bigger problem
It isn’t.
https://youtu.be/qgP7KkDesBo?si=XNb_yZYwA943t0lP
Water seems to put it out for a bit, but the reaction is self-oxidizing and starts right back up again. That’s why it takes so much water; fire fighters keep dowsing it and then doing it again. Takes all day, and the whole thing burns away in the end.
The way to do it is, if possible, tow it somewhere away from other things, keep the fire from spreading, and otherwise let it burn. For cars, there are fireproof blankets coming on the market to contain it. Semi-trucks are probably too big for that, though.
Well, the [vehicle] has been towed outside the environment.
Two.
The best policy is to not puncture batteries, and train others to not do so.
The next best is to know to smother them.
how do you smother a semi fire on the highway, a) with a water tanker or b) with a sand tanker, how many municipalities have a sand tanker on hand, how do those sand tanker hoses work again, lots of sand tanker slingers round your parts cowpoke?
For as much as people want their Musky circlejerks. This is really just a problem with the switch the EVs that people aren’t willing to accept.
There is no way to really stop an EV battery fire.
The batteries in these cars are made up of several cells, packed into a watertight, fire resistant box. When just one of those cells goes it’s over. It can create a chemical reaction that can ignite the cells without the need for oxygen, pure heat will set them off.
The only real way of dealing with them is to let them burn themselves out, and even after that they aren’t safe and could reignite.
It’s not the electrolyte that’s the issue, it’s the lithium. Solid electrolyte batteries wont make any difference. Unless by solid state you mean, no chemical reaction and we just switch to electrostatic cells, but that is nowhere near viable.
