A Parliamentary report recently called for improvements in safety at the country's nuclear power plants. In response, the state-backed power utility EDF, which operates the plants, insisted that safety is its top priority. But documents from the French nuclear watchdog the Autorité de Sûreté Nucléaire seen by Mediapart – but not by French MPs who wrote the report – reveal a different story. They show that procedures to prevent explosions in areas of several nuclear plants are deeply inadequate and in some cases non-existent. Pascale Pascariello reports.