Patent Number: 
Section: claims

1. A method operating in conjunction with video display units (VDUs) of a reactor control interface wherein the VDUs include a group of safety VDUs and an additional VDU that is not a safety VDU, the method comprising:detecting a malfunctioning safety VDU, the remaining safety VDUs being functioning safety VDUs;shifting the displays of the functioning safety VDUs to free up one of the functioning safety VDUs wherein the shifting transfers the display of one of the functioning safety VDUs to the additional VDU that is not a safety VDU; andtransferring the display of the malfunctioning safety VDU to the functioning safety VDU freed up by the shifting. 2. The method of claim 1 wherein the group of safety VDUs includes:a home screen VDU displaying a simplified diagrammatic representation of a nuclear power plant;a mimic VDU displaying a mimic of a component of the nuclear power plant;a procedures VDU displaying a stored procedure executable by the nuclear power plant;a multi-trend VDU displaying trends of data acquired from the nuclear power plant; andan alarms VDU displaying a list of alarms generated by the nuclear power plant. 3. The method of claim 1 wherein the group of safety VDUs includes at least three VDUs of a group consisting of:a home screen VDU displaying a simplified diagrammatic representation of a nuclear power plant;a mimic VDU displaying a mimic of a component of the nuclear power plant;a procedures VDU displaying a stored procedure executable by the nuclear power plant;a multi-trend VDU displaying trends of data acquired from the nuclear power plant; andan alarms VDU displaying a list of alarms generated by the nuclear power plant. 4. A non-transitory storage medium storing instructions executable by an electronic data processing device in communication with a video display unit (VDU) to perform a method comprising:displaying a home screen representing a nuclear power plant, the home screen including:blocks representing functional components of the nuclear power plant including at least (i) blocks representing functional components of a normal heat sinking path of the nuclear power plant and (ii) blocks representing functional components of at least one remedial heat sinking path of the nuclear power plant, andconnecting arrows of a first type connecting blocks that are providing the current heat sinking path wherein directions of the connecting arrows of the first type represent the direction of heat flow along the current heat sinking path; andin response to the nuclear power plant transitioning to a different heat sinking path, updating the connecting arrows of the first type by deleting and adding connecting arrows of the first type so that the updated connecting arrows of the first type represent the different heat sinking path. 5. The non-transitory storage medium as set forth in claim 4 wherein the method further comprises:in response to a malfunctioning functional component of the nuclear power plant, highlighting the block representing the malfunctioning functional component using a highlighting format. 6. The non-transitory storage medium as set forth in claim 5 further comprising:selecting the highlighting format for the malfunctioning functional component from a group of different highlighting formats including at least:a first highlighting format that is selected if the malfunctioning functional component is the root cause of a of the nuclear power plant entering an abnormal operating condition,a second highlighting format that is selected if the malfunctioning functional component is not the root cause of a of the nuclear power plant entering an abnormal operating condition. 7. The non-transitory storage medium as set forth in claim 6 further comprising:in response to a remedial functional component taking intended remedial action in response to a malfunctioning functional component, highlighting the block representing the remedial functional component using a third highlighting format that is different from the first and second highlighting formats. 8. The non-transitory storage medium as set forth in claim 4 wherein the method further comprises:receiving a user selection of a block of the home screen; anddisplaying a mimic view of the functional component represented by the user-selected block. 9. The non-transitory storage medium as set forth in claim 4 wherein the method further comprises:receiving a user selection of a block of the home screen; anddisplaying a list of stored procedures involving the user-selected block. 10. The non-transitory storage medium as set forth in claim 4 wherein the method further comprises:simultaneously displaying two side-by-side alarm lists wherein one alarm list is by chronological or reverse chronological order and the other alarm list is ordered by priority. 11. The non-transitory storage medium as set forth in claim 10 wherein the method further comprises reordering the alarms of the alarm list is ordered by priority based on a user selection of a different ordering criterion. 12. The non-transitory storage medium as set forth in claim 4 wherein the method further comprises:displaying a plurality of trends of data acquired from the nuclear power plant in peripheral windows of a multi-trend display area;receiving a user selection of one of the trends displayed in the peripheral windows of the multi-trend display area; anddisplaying the selected trend in a central window that is larger than the peripheral windows and that is surrounded by the peripheral windows.