Chernobyl at 40: Ukraine marks anniversary amid new nuclear fears

As Ukraine commemorates the 40th anniversary of the Chernobyl disaster, the world's most catastrophic civilian nuclear accident, the shadow of the past looms large over the present. The explosion at reactor number four on April 26, 1986, a consequence of human error during a safety test and critical design deficiencies, not only devastated northern Ukraine but also sent a radioactive cloud across Europe, leaving a lasting legacy of fear and health consequences.

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At 01:23 on April 26, 1986, a human error during a safety test triggered a blast in reactor number four at the Chernobyl nuclear plant in northern Ukraine, then part of the Soviet Union.

This solemn anniversary arrives at a particularly perilous time. Four years into Russia's full-scale invasion, the Chernobyl plant, now a defunct facility, has once again become a focal point of danger. Russian forces occupied the site in the early days of the 2022 invasion, digging trenches in contaminated areas and raising grave concerns about the potential for another nuclear catastrophe. Their subsequent withdrawal a month later offered a temporary reprieve, but the underlying threat remains.

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The International Atomic Energy Agency (IAEA) determined the main cause of the disaster was “severe deficiencies in the design of the reactor and the shutdown system” combined with “violation” of operation procedures.

The disaster's impact on Ukraine and its people is profound and enduring. The thousands estimated to have died from radiation exposure, the hundreds of thousands of 'liquidators' exposed to high levels of radiation during the clean-up, and the persistent public fear of nuclear energy are scars that have shaped national consciousness. The memory of Chernobyl serves as a stark reminder of the fragility of safety and the devastating consequences of technological failure and political obfuscation, particularly as the nation now grapples with the ongoing conflict and its own nuclear power infrastructure.

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In the following days, the radioactive plume heavily contaminated Ukraine, Belarus and Russia before spreading across Europe.