A team of South Korean experts arrived in Japan on Sunday for an unprecedented six-day visit that will include a trip on Tuesday to the crippled Fukushima No. 1 nuclear power plant, where the government is planning to release treated water into the ocean as part of a decadeslong decommissioning process.

Concerned about the aftereffects of the March 2011 nuclear disaster, South Korea continues to uphold a ban on seafood and marine imports from the area around the Fukushima No. 1 plant, despite Japanese government insistence the food is safe.

Nuclear Safety and Security Commission Chairperson Yoo Guk-hee is heading a 21-member team of government experts, who on Monday met with nuclear officials from plant operator Tokyo Electric Power Company Holdings (Tepco) and various government agencies that oversee Japan's nuclear power industry. They will tour the plant on Tuesday and Wednesday, paying particular attention to Japan’s plans to discharge treated water, currently being stored at Fukushima No. 1, into the ocean.