Fifteen of 17 large nuclear facilities in Japan have inadequate health and safety measures, according to a report released yesterday by the nation’s Labor Ministry. The report found 25 violations of health and safety law, most related to inadequate checks on radiation exposure. The ministry issued instructions to nuclear facilities to improve their records, and announced that it will be making more frequent inspections in the future. The facilities were inspected last month, following Japan’s worst nuclear accident on Sept. 30. The findings are likely to further undermine the Japanese public’s confidence in nuclear power.