One man pressing one wrong button triggered the nuclear disaster which rocked the world and spilled nuclear waste intothousands of people’s homes.

In the early hours of 26 April 1986, a planned test on Reactor 4 at theChernobyl Nuclear Power Plantwent catastrophically wrong. Engineers were working to see how thenuclear reactorwould act in the event of a nuclear attack triggering a power cut to Chernobyl.

Systemic design flaws in the RBMK reactor - coupled with inadequate understanding of those flaws by staff operating it - resulted in the world's worst nuclear disaster: Reactor 4 exploded.

Regarded as a cutting-edge nuclear power plant – a triumph of USSR engineering - according to theYouTube channel Chernobyl Family.

The nuclear power station was built nine miles north-west of Chernobyl, with the city of Pripyat built at roughly the same time, exclusively as accommodation for those employed at the power plant.

In September 1981, Reactor 1 experienced a partial meltdown - however, the damage was minimal and the incident was not disclosed to the public until several years afterwards.

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In the spring of 1986, Reactor 4 had recently been brought online and had started generating power, yet a number of tests still needed to be conducted.

This test was intended to establish how long turbines would continue spinning and supplying power to the main circulating pumps following a loss of primary electrical power supply (in the event of, for instance, a nuclear attack).

Source: Daily Express :: World Feed