Sizewell integrated system for centralized operations: getting it all together

The authors describe how, in June 1991, Westinghouse was awarded a contract by Nuclear Electric to supply the integrated system for centralized operations (ISCO) for the Sizewell B nuclear power plant under construction in Suffolk. This system is a large scale distributed control and instrumentation system that will perform safety and control functions for the primary and secondary systems for the plant. Combined with the control and instrumentation equipment that was already being supplied for the plant by Westinghouse, this will be the most extensive integration of modern digital control equipment on a nuclear power plant to date