<正> Introduction In December 2003, the Finnish utility TVO awarded the Consortium Framatome ANP/Siemens AG the contract for the turnkey construction of a nuclear power plant at the Olkiluoto site in Finland. It is the first implementation of the newly developed EPR (European Pressurized Water Reactor). I&C are based on the advanced digital platform TELEPERM XS and TELEPERM XP which includes the Operating and Monitoring System OM 690. TXS, developed by Framatome ANP, together with TXP, developed by Siemens, constitutes a platform which has been proven in operation in the course of numerous