Cernobîl. Compania ucraineană de electricitate anunță că fosta centrală nucleară, ocupată de ruși, a fost deconectată complet de la rețeaua electrică, iar pompele de răcire a deșeurilor radioactive nu mai funcționează. Avertizează asupra riscurilor de contaminare radioactivă
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A comentat cineva pe r/WorldNews:
> I posted this in an earlier thread on this matter:
> As far as I know they’re talking about room 305/2 at reactor 4, the underground area where the uranium, graphite and sand lava burned through to.
> This was “cool” for a long time but in 2021 started to react and heat up again (though, at a far lower level than the original disaster).
> The area is encased in concrete, so there’s no oxygen left and no fire can break out, but the mass of radioactive elements and sand could still heat up enough to become liquid again. If the lava breaches the concrete containment structure there would likely be a medium sized explosion and the release of radioactive elements which would breach the steel containment “sarcophagus” around reactor 4.
> The good news is that this process will take several years to happen, I’d be surprised if it heats up enough this decade to become a problem.
> The long term plan is to drill in to the containment area (slowly) and push retractable neutron absorbing control rods in to the body of the structure, there are technical challenges to doing this safely (not accidentally causing an explosion or significantly breaching containment).
Deocamdata e ok…ish.
> CHERNOBYL UPDATE: BEWARE MISLEADING CLAIMS ABOUT OLD SPENT FUEL COOLING NEEDS
> The spent fuel rods are at minimum 22 years old.
> They have very little heat to dissipate. In most plants, spent fuel that is more than 5 years old sits in dry storage cooled easily by air.
> WHAT SHOULD WE BE WATCHING FOR?
> There are indeed 20k old fuel rods in a pool. Their heat is low enough that experts I’ve talked to expect weeks or even months to heat the water enough to dry out the pool. Even then, natural air circulation should be sufficient.
https://twitter.com/energybants/status/1501528837221494790?s=20
Speram sa nu fie bine documentat, apoi am vazut ca e preluat de la Reuters… Nebunie curata pe capul rusilor daca e asa. Si ma tot intreb cum nu se gasesc vreo cativa de sus sa se opuna (macar) unor ordine care pot duce la asa ceva…
Ultimul reactor de la Cernobîl a fost inchis in decembrie 2000. Deci sunt 22 de ani de la ultimul combustibil folosit scos dintr-un reactor. Nu mai produce prea multa caldura.
Cand o vad o stire ce are nuclear in titlu ma apuca anxietatea si panica…
Asta chiar o sa i faca pe oameni sa ia cacaturile alea de pastile cu iod :)))
Panica degeaba. Centralele nucleare au multiple sisteme de siguranta, faptul ca tai o centrala de la reteaua de curent nu inseamna nimic. So stop getting crazy over it.
Si inca un comentariu care makes sense si care calmeaza putin senzationalismul
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>This is inconvenient but will not cause a safety issue.
First of all the Chernobyl site has 3 offsite power supplies, 750kV, 330kV and 110kV. According to current media messages they only lost one so the site should still be on a normal offsite power supply.
Now even if the media reporting is incorrect and they’ve lost all 3 offsite power supplies they still have emergency diesel generators which can provide atleast 7 days of power each.
If those diesel generators are lost too they’re on batteries which will die within hours. They have mobile diesel generators they can connect in order to keep them charged.
If these mobile diesel generators also fail they’ll be without power if the batteries die. In that case they just lose monitoring systems which means they’ll have to inspect the various waste storage facilities locally.
The spent fuel in the Chernobyl site is atleast 22 years old which means they no longer require active cooling. If all cooling were to be lost the water in the spent fuel pools will not exceed 70°C and thus will not boil off. So the facilities are safe even without power.
Rusul nu e destul de prost până nu se și autoradiaza