Patent Number: 052710459
Section: claims

1. An integrated process status overview system for a nuclear power plant, the plant including,  wherein the integrated overview system comprises:  a screen display for generating an image of the major components and connecting fluid lines in the plant for which the protection system and control system parameters are sensed;  means for computing a representative value of a process parameter from the validated signals for the parameter and projecting the parameter representative value adjacent the image of the respective component or line;  means for projecting a first symbol adjacent at least the projected representative value indicating whether the value is greater or less than the normal range limits for the parameter;  means for projecting a second symbol adjacent the first symbol indicating whether the value is increasing or decreasing in magnitude.  means for projecting a plurality of alarm tile images on the screen, each alarm tile corresponding to a condition associated with a parameter of the protection or control system;  means responsive to at least one representative value, for visually emphasizing the tile image of an alarm when the condition associated with said alarm exceeds a threshold.  means responsive to the protection system and the control system, for projecting symbols on the screen that are indicative of the combination of components and fluid lines that are available for performing a plurality of plant critical functions relating to plant safety and power production, including reactivity control, core heat removal, steam/feed conversion, and electric generation. 2. The overview status system of claim 1 including, 3. The overview status system of claim 1 including, 4. The overview status system of claim 3, wherein the critical functions include reactor coolant system heat removal, reactor coolant system inventory control, and secondary system heat rejection.