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Kwyndig posted:I'm reminded of the one where the guy repeatedly sprayed his balls with pesticide. It started to hurt and instead of stopping, he did it more. Love when "ow my balls" meets nerve agents.
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Apr 27, 2024 23:26
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DildenAnders posted:Love when "ow my balls" meets nerve agents. Mr. T Warcrimed My Balls
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Apr 27, 2024 23:37
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Midjack posted:Mr. T Warcrimed My Balls In this house, we believe: Love is love No person is illegal Yoda ate my balls
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Apr 28, 2024 00:02
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mycomancy posted:In this house, we believe: Fixed it for my house 
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Apr 28, 2024 00:23
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Isentropy posted:I can't think about improper labelling without thinking about the chubbyemu video about someone who for some stupid reason put organophosphate pesticide in a Gatorade bottle There's also the 35 grams of caffeine guy.
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Apr 28, 2024 01:28
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Apr 28, 2024 06:51
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I mean, the stuff was named Plutonium for a reason 
Perestroika has a new favorite as of 12:41 on Apr 28, 2024 |
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Apr 28, 2024 10:40
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The Plutonic ideal of a cursed metal.
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Apr 28, 2024 11:45
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So cursed it manages to kill itself.
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Apr 28, 2024 12:15
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Just sittin' in a freezer, setting myself on fire, what's up with you?
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Apr 28, 2024 13:24
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"The ignition temperature of ___ has never been established." is one hell of a sentence
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Apr 28, 2024 13:53
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Sure it sounds ominous, but lots of common metals are pyrophoric if you machine them finely enough and that video of the guy at Hanford burning plutonium buttons makes a point that the lumps took a carbon arc torch to ignite. e: how was this not posted in this thread already https://www.youtube.com/watch?v=ssH9o32CZtg pygmy tyrant has a new favorite as of 14:12 on Apr 28, 2024 |
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Apr 28, 2024 14:07
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pygmy tyrant posted:Sure it sounds ominous, but lots of common metals are pyrophoric if you machine them finely enough and that video of the guy at Hanford burning plutonium buttons makes a point that the lumps took a carbon arc torch to ignite. This should probably be posted in the OSHA thread in GBS as well.
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Apr 28, 2024 14:30
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pygmy tyrant posted:Sure it sounds ominous, but lots of common metals are pyrophoric if you machine them finely enough and that video of the guy at Hanford burning plutonium buttons makes a point that the lumps took a carbon arc torch to ignite. Warning: don't use halon on a plutonium fire It doubles the temp of the 600-800 degrees C fire and causes the halon to decompose into among other things, hydroflouroic and hydrobromic acid
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Apr 28, 2024 18:01
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Nebakenezzer posted:Warning: don't use halon on a plutonium fire The whole point of using halons to extinguish fires is that they decompose, so that the halogen atoms released can scavenge free radicals from the reaction front and prevent the fire from propagating, which is why you don't want to use halons on any metal fires. There's nothing special about plutonium in that regard.
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Apr 28, 2024 18:20
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Nebakenezzer posted:Warning: don't use halon on a plutonium fire Where's the hydrogen coming from?
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Apr 28, 2024 18:26
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big bang synthesis.
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Apr 28, 2024 19:01
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Rust Martialis posted:Where's the hydrogen coming from? That's hot enough to start cracking the water in the air.
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Apr 28, 2024 19:05
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Rust Martialis posted:Where's the hydrogen coming from? 'Halomethane' just means some of the hydrogens have been replaced by a halogen, not that they all have.
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Apr 28, 2024 19:20
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Phanatic posted:'Halomethane' just means some of the hydrogens have been replaced by a halogen, not that they all have. https://en.m.wikipedia.org/wiki/Dibromotetrafluoroethane C2Br2F4 Nary a proton* in sight *for any other NMR peeps
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Apr 28, 2024 19:37
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HF because we're on some waterlogged poison factory and a fluorine faced with losing its organic bond is going to snap decide it would mind the least grabbing a hydrogen from the nearest other organic or water compared to literally everything about reacting with another fluorine, oxygen, nitrogen, or metals.
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Apr 28, 2024 19:45
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As I said: 'Halomethane' just means some of the hydrogens have been replaced by a halogen, not that they all have. You picked a halon without hydrogens, but there are plenty that have hydrogens.
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Apr 28, 2024 19:57
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None of the halogen fire suppressants of note have hydrogens and their inclusion usually prohibits the radical interruption effect. A fact of blno small frustration to halogen chemists as adding hydrogens was one of the easier ways to fix things like ozone layer reactivity or global warming potential. They still generate HF and HBr in over temperature situations because that's what halogenated organics do on earth when you are never far from a water or plastic or wood fiber or etc. If you are in some weird experimental chamber without these things you can start squeezing out really angry diatomics or complexes. Otherwise fluorine is just grabbing a hydrogen to protect its modesty on its way back home to a Calcium.
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Apr 28, 2024 20:14
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Fluorine protecting its modesty is loving killing me 
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Apr 28, 2024 20:20
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Icon Of Sin posted:“Fluorine protecting its modesty” is loving killing me Pyf Dangerous Chemistry: Fluorine protecting its modesty
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Apr 28, 2024 20:54
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zedprime posted:None of the halogen fire suppressants of note have hydrogens and their inclusion usually prohibits the radical interruption effect. A fact of blno small frustration to halogen chemists as adding hydrogens was one of the easier ways to fix things like ozone layer reactivity or global warming potential. This was specified as a metal fire
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Apr 28, 2024 20:54
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One of my all time favourite phrases is "unfavourable geometry" which covers the scenarios about different shapes and their impact on criticality. Especially important when it comes to dealing with solutions of nuclear material as the act of pouring, or putting in the wrong shaped vessel could lead to a criticality. The phrase itself seems so Lovecraftian as well. Somewhere I read a long document covering investigations into nuclear lab incidents world wide that covered a lot of cases where things had gone wrong. I couldn't find it now however I did come across this helpful diagram in a nuclear safety workbook:  Seems to really nail the general "lab assistants as reagents" theme of some dangerous chemistry. EDIT:  "You're carrying that wrong!" "Don't worry, it's not that heavy, I won't drop it" "No, your body is acting as a reflector causing it to go critical!" door.jar has a new favorite as of 03:20 on Apr 29, 2024 |
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Apr 29, 2024 03:17
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Somebody probably knows and is haunted by this, but I wonder exactly how many times that last one's happened. It can't be that many but the number has to be above zero, simply because that's how science works, we learn from our mistakes.
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Apr 29, 2024 03:38
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Kwyndig posted:Somebody probably knows and is haunted by this, but I wonder exactly how many times that last one's happened. It can't be that many but the number has to be above zero, simply because that's how science works, we learn from our mistakes. Here's the document I think I had read previously: https://www.nrc.gov/docs/ML0037/ML003731912.pdf It covers 60 incidents (38 in facilities which were supposed to have criticality, 22 in ones that weren't) between 1945 and 1999. It makes for some interesting (but at times depressing) reading. I don't remember any of them specifically being about humans acting as a reflector or similar, generally when reflection was involved it was the design of the reflector itself rather than non-equipment reflection. EDIT: Actually, here's one: Mayak Production Association, 2 January 1958 quote:three of the experimenters manually lifted the vessel and began to move it (in order to directly pour the contents into containers) when the excursion occurred. The three experimenters all died in 5 - 6 days, the four nearby worker was VERY sick and went blind door.jar has a new favorite as of 04:27 on Apr 29, 2024 |
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Apr 29, 2024 04:17
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door.jar posted:Here's the document I think I had read previously: It must have been really close to prompt critical to begin with for human reflectors to push it over. I assume they weren't crowding the sample so this must have been a pretty dangerous experiment even under ideal conditions.
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Apr 29, 2024 08:11
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door.jar posted:One of my all time favourite phrases is "unfavourable geometry" which covers the scenarios about different shapes and their impact on criticality. Especially important when it comes to dealing with solutions of nuclear material as the act of pouring, or putting in the wrong shaped vessel could lead to a criticality. The phrase itself seems so Lovecraftian as well. Also important when your normally solid fuel becomes liquid and relocates itself to the bottom of your reactor pressure vessel. A good reason to keep a sufficient stock of neutron poisons on hand, just in case.
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Apr 29, 2024 09:08
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Kwyndig posted:It must have been really close to prompt critical to begin with for human reflectors to push it over. I assume they weren't crowding the sample so this must have been a pretty dangerous experiment even under ideal conditions. I'm certainly no expert but every single thing about the experiment screams dangerous to me. If you read the document from page 7 to 12 covering three separate incidents in this one facility it's just an ever increasing amounts of WTF.
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Apr 29, 2024 11:31
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Gonna take the opportunity to remind everyone about the dignuses at LANL nearly self-extracting from the gene pool: https://apps.publicintegrity.org/nuclear-negligence/near-disaster/
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Apr 29, 2024 12:28
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Kwyndig posted:It must have been really close to prompt critical to begin with for human reflectors to push it over. I assume they weren't crowding the sample so this must have been a pretty dangerous experiment even under ideal conditions. It was 3 workers moving a barrel of plutonium solution. The arrangement was subcritical when the barrel was upright, but when they tilted it suddenly it wasn't so safe. door.jar posted:I'm certainly no expert but every single thing about the experiment screams dangerous to me. If you read the document from page 7 to 12 covering three separate incidents in this one facility it's just an ever increasing amounts of WTF. One of the funnier things about Mayak's wild west approach to safety was the fact they kept using the same standard 40-gallon barrels for every conceivable purpose even after they were repeatedly shown to cause issues. Even though they had safer containers. Safe geometry bottles? gently caress that it's barrel time.
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Apr 29, 2024 17:00
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Feynman did some of this at Oak Ridge - fissile storage. I recall Fermi mentioning doing neutron studies in Italy and an obese colleague reflecting neutrons standing at the bench.
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Apr 29, 2024 17:53
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door.jar posted:Here's the document I think I had read previously: Only factory/non-military criticality accidents? I ask because due to using lead and Bismuth as a coolant, the Alfa class submarines had to be refueled while the reactor was critical--- It used Beryllium as a moderator
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Apr 29, 2024 20:17
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Nebakenezzer posted:Only factory/non-military criticality accidents? "We're gonna need another Timofey!" 
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Apr 29, 2024 20:50
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Nebakenezzer posted:Only factory/non-military criticality accidents? IIRC there were supposed to be special stations at their home port that they could connect their coolant loop to to keep it hot while the reactor was down for service. Due to budget cuts these stations were never built.
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Apr 30, 2024 03:45
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this is why most nerds are skinny
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Apr 30, 2024 05:01
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Cranappleberry posted:this is why most nerds are skinny 
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