🔗 Share this article Chornobyl Catastrophe Containment Structure Can No Longer Blocks Harmful Radiation, Requires Major Repair – IAEA The containment structure covering the Chornobyl reactor core in Ukraine has lost its primary safety function of blocking radiation, according to the IAEA. This loss of function follows a drone attack earlier this year that blew a hole in the protective shell. Structural Compromise from Aerial Attack Compromises Containment System An attack by an unmanned aerial vehicle in February severely damaged the so-called “new safe confinement” arch. This enormous protective structure, built at a cost of €1.5bn with work finishing in 2019, was designed to contain radiation for decades. An IAEA assessment mission confirmed that the strike had weakened the structural integrity of the steel confinement. The [protective structure] had lost its primary safety functions, including the confinement capability, said IAEA director general Rafael Grossi. He added that inspectors found no permanent damage to key support structures or monitoring systems. Background Context of the Chornobyl Containment The original 1986 explosion at Chornobyl – which occurred when Ukraine was a republic within the Soviet Union – released radioactive fallout across Europe. In a hurried response, Soviet authorities built a concrete “sarcophagus” over the ruined reactor, though it possessed only a 30-year lifespan. The New Safe Confinement was erected to enable the eventual decommissioning of the original structure, the damaged reactor building, and the melted nuclear fuel within. Present Status and Required Steps Although limited repairs have been carried out, agency officials emphasized that a full-scale repair effort is absolutely necessary. This is needed to prevent further degradation and to guarantee long-term nuclear safety. Officials in Ukraine previously reported that a drone armed with a high-explosive warhead struck the facility, igniting a blaze and compromising the outer shielding. Radiation Levels: Authorities confirmed background radiation remained within safe limits after the incident with no indication of any leakage. Geopolitical Context: Moscow's troops occupied the Chernobyl exclusion zone for over a month in the early stages of the 2022 invasion. Broader Inspection: The agency carried out this review concurrently with a nationwide survey of conflict-related damage to Ukraine's power substations. These developments highlight the ongoing vulnerabilities at one of the world's most infamous nuclear disaster sites amid continued armed conflict.