The Chernobyl nuclear disaster occurred and went on for nine days. Standing near the bare Chernobyl reactor core, within 10 minutes, someone would have encountered a radiation dose 8,000 times that normally encountered over an entire year, resulting in a quick death. On the other hand at the Fukushima disaster, the Japanese Nuclear Regulatory Agency sent in robots that were built to work in a radioactive environment, but the radiation destroyed the robots in short order. Thus Fukushima is considered worse than Chernobyl.