In this picture taken on January 31, 2018 employees of Tokyo Electric Power Company (TEPCO) stand near the company's reactor number 3 at Fukushima Dai-ichi nuclear power plant in Okuma, Fukushima prefecture. - The Fukushima nuclear power operator is hoping to use the 2020 Tokyo Olympics as a springboard to double the number of visitors to its Tsunami-ravaged plant, as it seeks to clean up the region's image. A massive undersea earthquake on March 11, 2011 sent a tsunami barrelling into Japan's northeast coast, leaving more than 18,000 people dead or missing and sparking the Fukushima crisis, the worst such accident since Chernobyl in 1986. (Photo by Behrouz MEHRI / AFP) / TO GO WITH AFP STORY "JAPAN-NUCLEAR-FUKUSHIMA-DISASTER" BY SHINGO ITO