Every year 300,000 radioactive packages travel through France. How is the safety of this transport ensured and monitored? Nearly 30,000 externally contracted staff work in EDF’s nuclear power stations. Why do some of them have no proper health physics and medical follow-up? Superphénix has been shut down since July 1990. Will it ever be restarted? If so, in what conditions and for what purpose? In his fourth report, Mr Claude Birraux has adhered to his usual principles: to observe without complacency, to report objectively, and to evaluate without prejudice and also without seeking to take the place of the authorities responsible for monitoring the safety and security of nuclear installations. There is no doubt that over the last four years this "monitoring of the monitoring" by a fully independent parliamentary body has contributed to improving transparency in a field about which it is now essential that everyone should be fully informed.