If the Chernobyl "Elephant's Foot" (highly radioactive corium) hit water, it would cause a violent steam explosion, producing massive amounts of hydrogen and steam, potentially damaging the reactor containment, though water-cooling systems were designed to mitigate this by adding water slowly to prevent such catastrophic reactions, but direct contact with large volumes is extremely dangerous due to extreme heat and radioactivity.
In another 300 years there will be almost no radioactive Cs left, and it will have decayed into barium. The cesium that is there will be buried in the mass of the foot, where to radiation won't escape, or spread around, so it's probably not a really big risk to stand next to briefly.
"Depending on the type of reactor, the melt can spread and melt through the containment walls or continue to melt through the floor, eventually infiltrating groundwater (this is what happened at Fukushima). When the melt cools sufficiently, it will harden into a hard, rock-like mineral."
Its part of the reason spent fuel rods and such are kept in cooling pools; the water doesn't let as much radiation out. This, coupled with their diving suits and the amount of protection they had, limited their exposure somewhat. Not completely, but enough that what should have been a lethal dose, wasn't.
Flooding of the corium mass with water, or the drop of molten corium mass into a water pool, may result in a temperature spike and production of large amounts of hydrogen, which can result in a pressure spike in the containment vessel.
Get clean.
If possible, take a shower or wash with soap and water to remove any radioactive particles from skin or hair that was not covered. If you cannot wash, use a wipe or clean wet cloth to wipe any skin or hair that was not covered.
Indeed, Alexei Ananenko and Valeri Bespalov are believed to be both still alive as of 2024, while Boris Baranov lived until 2005 when he passed away from heart disease. In the years since Chernobyl, Ananenko has been the most vocal about the event itself and its aftermath.
It's estimated that parts of the core reached over 4,700 F (2,593 C) during the meltdown. This amazingly high temperature vaporized water instantly and caused a massive steam explosion.
Memorial to Khodemchuk in the reactor 4 building. His body was never found, and it is presumed that he is entombed under the remnants of the circulation pumps.
Under extremely hazardous conditions, thousands of "Liquidators" worked to contain the remains of the fourth reactor. The shelter surrounding the reactor was completed less than six months after the explosion during peak radioactivity levels.
Radiation from Chernobyl caused mutations in animals, harming their health and ability to reproduce. Many animals in the Chernobyl exclusion zone are radioactive and some, like birds, show physical abnormalities.
Yes, Chernobyl is still highly radioactive in many areas, especially near the damaged reactor, but radiation levels vary significantly; some parts of the exclusion zone have contamination low enough for potential limited agriculture, while a 2025 drone strike damaged the New Safe Confinement (NSC) structure, raising concerns about long-term containment, although immediate levels stayed stable as the NSC's function is to contain the original sarcophagus's radioactive material, not the entire zone.
The most famous image of the Elephant's Foot was taken in 1996 by Artur Korneyev (sometimes translated as Korneev), a Kazakhstani nuclear expert who was tasked with the intimidating job of finding the rogue fuel in the bowels of Chernobyl and measuring the radiation levels. “We were the trailblazers.
However, you can get quite close to the strcture and for those who go inside the power plant, you can actually go inside the Control Room #4, where the accident basically started. It is cool to see it from outside, but visiting the Control Room is even better.
The Chernobyl nuclear disaster was a catastrophic accident, BBC Science Focus looks at whether this could happen again. Probably not.
Indeed, discovering Chernobyl in the snow reveals to us that we are in one of the few places in the world where the Soviet Union remains; and after thirty-one harsh Ukrainian winters, it can still be discovered here in the forest, frozen in time.
The three men would live longer than a few weeks and none would succumb to ARS, as modern myth would have you believe. As of 2015, it was reported that two of the men were still alive and still working within the industry. The third man, Boris Baranov, passed away in 2005 of a heart attack.
All six were found guilty and Dyatlov was given the maximum sentence of ten years. From prison, he wrote letters trying to explain RBMK reactor flaws he had discovered, as well as to restore his and the other operators' reputations.
In a landmark 2023 study, the research team discovered evidence of genetic differences between canine populations living in two distinct areas of the CEZ, suggesting Chernobyl's dogs could have adapted to chemical and environmental exposures over generations.
Today, the Chernobyl exclusion zone is one of the most radioactively contaminated areas on Earth and draws significant scientific interest for the high levels of radiation exposure in the environment, as well as increasing interest from disaster tourists.
Many of the domestic animals that were left behind were killed by Soviet soldiers assuming they were contaminated, but some hid and survived in the wild, and their descendants now roam the Zone over three decades later. Today there are over 500 dogs living at different locations around the Zone.
In the radioactive ruins of the Chernobyl reactor, researchers found black fungi—especially Cladosporium sphaerospermum—growing on the reactor's inner walls decades after the disaster.