Architectural developments in online computer systems for power stations

Online computer systems (OLCS) for monitoring and controlling fossil-fuel and nuclear power stations were implemented in the 1970s. Developments in the technology of communications and chips have taken place in the 1980s, and two systems making use of such facilities are described. These two systems are at the Torness nuclear power station, Scotland, and at the Richand fossil-fuelled station in India. The lessons learned from using these two OLCS systems are discussed as are future developments and prospects