Requirements, development and conceptual design of a screen-based cont
rol room for nuclear power plants are outlined. The control room consi
sts of three or four equally equipped operator workstations comprising
screens for process information and manual process control. A plant o
verview will assist the co-ordination among the operators. A safety cl
assified backup system (safety control area) is provided to cover post
ulated failures of the control means. Some aspects of ergonomical vali
dation and of future development trends are discussed.