You should be clearer and explain that Pripyat is an abandoned city near Chernobyl.
Pripyat is a city of 43k people, housed for the Chernobyl Nuclear Power Plant. It was around four miles or so from Chernobyl, a city with around 40k people, established in 1139. The Nuclear Power Plants reactor #4 blew because of a test being done April 26th, 1:20AM. The head engineer ignored safety precautions and continued the test after many errors came up indicating he should shut down the reactor for the night so it can become stable. Unfortunately he ignored those and continued his test, and the reactor became unstable and flew. The some-ton cap that was atop the reactor blew off, and right through the ceiling. This caused radioactive waste to blow onto the rooftop, catching aflame. Firefighters arrived two minutes after, to take out the flames. They weren't aware of the intense level of radioactivity. They all died the next few days, but for stopping the fire they stopped a disaster that of 11 Hiroshima bombs, effect wise I believe.
The effect of Chernobyl effected All of Europe west of Ukraine. The wind caught the radioactive clouds and brought them all the way to London, where there's a small dosage of radioactivity that can be monitored, but not enough to effect human life. There's restrictions for farms in Wales about the radioactivity also.