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by practicemaths 667 days ago
"What the water dumping is for is making sure it doesn't re-ignite on its own"

Yes, hence why I said it requires lowering the temperature to below the threshold for it to re-ignite.

Here's one submersion system:

https://www.garrisonflood.com/ev-fire-fighting-water-submers...

It requires a significant more water to put them out. Hence it's more efficient to just submerge them in water than it is just dumping water on top of them.