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A containment structure encasing the Chernobyl reactor core within Ukraine has lost its main safety function of blocking radiation, as announced by the IAEA. This failure comes after a drone attack earlier this year that caused significant damage in the protective shell.

Damage from Drone Strike Compromises Safety Structure

An attack by an unmanned aerial vehicle in the second month of the year severely damaged the so-called “new safe confinement” structure. This massive shield, constructed for €1.5bn with work finishing in 2019, was designed to contain radiation for decades. An IAEA inspection last week found that the strike had weakened the structural integrity of the steel arch.

The [protective structure] had lost its primary safety functions, including the confinement capability, said IAEA director general Rafael Grossi. He added that the mission confirmed no lasting harm to its load-bearing structures or sensor systems.

Historical Context of the Chornobyl Shelter

The original 1986 disaster at Chornobyl – which occurred when Ukraine was a republic within the USSR – spewed radioactive fallout across Europe. In a hurried containment effort, Soviet engineers built a concrete shelter over the damaged reactor, but it had a 30-year lifespan. The new confinement was erected to allow for the future decommissioning of the old sarcophagus, the damaged reactor building, and the molten fuel within.

Present Status and Required Steps

Although limited repair work has been done, agency officials emphasized that comprehensive restoration is essential. This is needed to stop additional deterioration and to ensure safety for the coming decades. Ukrainian authorities previously reported that a unmanned aircraft armed with a powerful explosive hit the facility, causing a fire and compromising the outer shielding.

• Radiation Readings: Authorities confirmed radiation levels stayed within safe limits following the attack with no indication of any leakage.
• Geopolitical Context: Moscow's troops occupied the Chornobyl site for over a month during the initial phase of the full-scale war.
• Wider Assessment: The IAEA carried out this inspection concurrently with a country-wide assessment of conflict-related damage to the country's power substations.

These developments highlight the ongoing vulnerabilities at one of the the planet's most notorious atomic accident locations during ongoing armed conflict.