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What if you swam in a nuclear storage pool?

What if you swam in a nuclear storage pool? on HackerTube: recommended by 2 Hacker News commenters across 1 month, 2024–2025.

xkcd's What If?

explainer · evergreen

Open on YouTube

Randall Munroe of xkcd answers what would happen if you swam in a spent nuclear fuel pool, and how much radiation you would receive at the surface versus at depth.

Why Hacker News recommends it

Recommended whenever a thread asks how dangerous it is to fall into a reactor or fuel pool.

people recommended it
2
separate months
1
strong recommendations
0
discussed on HN
2024–2025
“XKCD has a good video about this.”
— benmathes, Oct 2025, in “A worker fell into a nuclear reactor pool”

What HN commenters said

4 Hacker News comments link this video. Each one links back to its thread.

seanmcdirmidOct 2025Recommends

Doesn’t it depend on how far they sink? I’m pretty sure xkcd did a comic on this. Oh, it’s a video, here it is: ▶ this video Edit: ok, I’m probably the fiftieth person to point this out. It’s still a good video.

in “A worker fell into a nuclear reactor pool” · View on HN

benmathesOct 2025Recommends

XKCD has a good video about this. The top of the water is remarkably safe, and a life vest would keep you up there! ▶ this video

in “A worker fell into a nuclear reactor pool” · View on HN

cpetersoNov 2024Cites it

> He took a dip in a pool with a functioning nuclear pile xkcd published a What If? video about the consequences of swimming in a nuclear fuel pool: ▶ this video

in “The meme-ification of the “Demon Core”” · View on HN

throw0101cJul 2024Cites it

> Revell River is a watershed for local communities, and South Bruce is a farming community. Thus, expect to be sued by dozens of folks... Not “if” but “when” the site inevitably leaks like the identical facilities in the US and Germany. Given that the storage will be several hundred metres below the surface and the water table of (e.g.) the Bruce area is at ~35m: * [link] Not sure what such an incident would really do. Especially since the Bruce nuclear plant is already storaging spent fuel on-site for about forty years, so it's not much different if that location is picked. > If it was such a great safe idea, why not install it in downtown New York or Washington? Good jobs program right... ;) Sure. Things are currently held on-site at nuclear plants, and they can continue to do so indefinitely IMHO. I'm in Toronto, ~50km from the Pickering plant, and I'd be fine with that. I good friend of mine has lived in Pickering all his life and doesn't give it a second thought. Heck, if OPG wants to build a spent fuel pool in my backyard I'd be happy to accept it: free year-round "ground-source" heating/cooling for me. * [link] * ▶ this video

in “A New Specialized Train Is Ready to Haul Nuclear Waste” · View on HN

Topics & tags

Nuclear power & fusionEveryday physics & science demosxkcdwhat ifradiationnuclearspent fuel