aking it difficult to detect leaks. Only two workers are assigned to checking nearly 1,000 tanks on two-hour patrols twice a day, Mr. Imaizumi said. The Nuclear Regulation Authority, which the Japanese government ordered to more actively advise and monitor Tepco’s activities at the plant, had told the company to begin transferrin

making it difficult to detect leaks. Only two workers are assigned to checking nearly 1,000 tanks on two-hour patrols twice a day, Mr. Imaizumi said. The Nuclear Regulation Authority, which the Japanese government ordered to more actively advise and monitor Tepco's activities at the plant, had told the company to begin transferrin