• pete_the_cat@lemmy.world
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    1 year ago

    They were hardened as they were built in the 70s, 80s, and 90s. They all pretty much have 30 foot thick concrete walls in the containment building that houses the reactor(s). The Nuclear Regulatory Commission doesn’t want something like Chernobyl to happen, which had no containment building, just a normal structure. Even if a US reactor goes supercritical and melts down, there is about a <1% chance of any radiation leaking out. If the reactor exploded the building would withstand the explosion and vent the pressure into the atmosphere, which may contain small amounts of radioactive alpha and beta particles. The only nuclear accident we’ve ever had was Three Mile Island in Pennsylvania and that was because the safety valve in the containment building got stuck open after venting the pressure after one of the reactors went critical.

    • Cethin@lemmy.zip
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      1 year ago

      Even three mile island wasn’t as bad as most people seem to think. It was used as an Anti-nuclear propoganda piece, but it wasn’t that bad. The other reactors there continued operating for several decades after, though I think they’re now all shut down.

      (This is true for Chernobyl too though, so I guess it really doesn’t say a whole lot about severity.)

      • Captain Aggravated
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        1 year ago

        Most of what the Three Mile Island accident did was use up half the power plant. Problem is it spooked a lot of folks, partially due to unfortunate timing. The movie The China Syndrome had recently come out, and a lot of people expected it to go as bad as that.

        It really didn’t help when the Soviets blew the roof off a reactor seven years later.

        • AngryCommieKender@lemmy.world
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          1 year ago

          If the US government hadn’t classified the event, the reactor that they intentionally melted down in the late 50s/early 60s in the TVA would have been proof that China Syndrome was based on bad math. That incident is why the Army Corps of Engineers lost their nuclear power program. Didn’t anyone else wonder why the Army Corps of Engineers built a bunch of nuclear reactors in the 50s and 60s for the TVA, and then they never worked on nuclear power again? The Navy still has their nuclear power program…

          • Captain Aggravated
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            1 year ago

            You think the general public is able to understand or care that the math checks out in a disaster movie?

            • AngryCommieKender@lemmy.world
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              1 year ago

              General public wouldn’t have freaked out if the government hadn’t been lying at worst, and misrepresenting data at best, about a lot of things regarding nuclear technology.

      • pete_the_cat@lemmy.world
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        1 year ago

        There was practically zero impact to the surrounding environment after the TMI leak, I think I read that radiation was practically undetectable after like 6 months.

        This is not true for Chernobyl though. That place is fucked and they needed to encase the reactor building twice in order to stop it from leaking harmful radioactive particles (x-ray and gamma particles, alpha and beta particles are less worrisome but still harmful in large doses IIRC). Pripyat is still hot and will be for like a hundred years or more, tons of people died either immediately after the explosion or shortly thereafter. Those that didn’t die within the first few months developed serious health issues and cancers years later. It’s literally the worst nuclear disaster in history.

      • Madison420@lemmy.world
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        1 year ago

        Very true, the windscale fire is probably a better comparison between incompetence and release.

        Yes three mile shut down production completely in 2019 after running at a loss for years.

    • AngryCommieKender@lemmy.world
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      1 year ago

      Three Mile Island isn’t the only incident, just the only accident, we have had. The only true meltdown was intentionally caused by the Army Corps of Engineers in the late 50s to test if China Syndrome was real. Thankfully someone did the math wrong so there was no danger of the core melting to the center of the earth and detonating. This is why the TVA was the last time that the Army Corps of Engineers was allowed to administer the things. Congress was understandably a bit upset to find out that they basically flipped a coin on destroying civilization at the very least.

    • Madison420@lemmy.world
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      1 year ago

      That’s just not true. We’ve had many many nuclear accidents just not many nation scale events.

      I’ll put it this way sl1 went prompt critical and skewered an operator to the ceiling with a control rod. And that’s just one.

      • Eheran@lemmy.world
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        1 year ago

        Maybe comparing to experimental reactors from 70 years ago is not exactly relevant.

        • Madison420@lemmy.world
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          1 year ago

          It’s relevant. Hyperbole about nuclear energy isn’t helpful. Even counting every single low level nuclear accident throughout the history of the world it is still a better safety record than any other mass market means of power production.

          It’s not hyperbole, it’s accurate and it doesn’t try to lie by omission.

          Ed: Peach bottom wasn’t experimental and had a number of actual accidents and many near misses.

          Among the incidents cited by the NRC: security guards were overworked, one guard was found asleep on the job, 36,000 gallons of “mildly radioactive water” leaked into the Susquehanna River, PECO mislaid data on radioactive waste classification causing misclassification of a waste shipment, and a major fire occurred in the maintenance cage of the Unit 3 turbine building on March 4, 1987

          And that’s ignoring the dumpster fire called Hanford that we’ve been cleaning up for 30 fucking years at the cost of ≈200 billion dollars so far.

          My grandpa worked for the nrc and was called into both peach bottom and three mile, the amount of near misses that people will almost certainly never know about is quite a bit larger than you would assume.

          • pete_the_cat@lemmy.world
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            1 year ago

            These are mostly all people fucking up and not the structural integrity being breeched or the reactor running out of control.all things considered, they’re very safe if operated and monitored properly. The problem is that there is practically zero funding for nuclear power since the oil and gas industry has been lobbying against it and demonizing it in the public eye for decades.

            It’s the same as saying “cars are dangerous because people drive drunk or fall asleep at the wheel and cause accidents”. The tech isn’t the problem, it’s the people operating it.

            • Madison420@lemmy.world
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              1 year ago

              I’m well aware of the causes and I know they’re safe, I’ve both said that specifically and never implied otherwise. I know about lack of funding as well, in not sure your point in bringing it up either.

              Well aware, I’m not sure where you got the idea that I I’ve says anything at all about their safety aside from lies by omission do not benefit the argument for nuclear power.

      • pete_the_cat@lemmy.world
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        1 year ago

        That’s a “workplace accident” I’m talking about something affecting the surrounding community and the environment. Also, AFAIK humans shouldn’t be in the reactor chamber when it’s active regardless of the protection, especially when the reactor has a possibility to go critical at the drop of a hat. That’s just flat out dumb and was probably the result of poor management and decision making. There’s a reason that they’re operated remotely, you know.

        Of course bad shit happens on the job/internally, but that really has no adverse effects on anyone else, which is what most people care about.

        • Madison420@lemmy.world
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          1 year ago

          Yeah a workplace accident that irradiated the chamber, irradiated and impaled a guy to the ceiling and released radiation. Yeah the reason people aren’t intended to be inside anymore is because of sl1, every safety feature is written in blood, nuclear is no different.

          You don’t need to hedge, even including every accident in the history of earth three nuclear safety record is orders of magnitude better than any other means of power generation that’s gained mass acceptance.