TIS process supervisory local area network (LAN)

TIS - the process supervisory LAN was installed at both the NPP V-1 twin-units of WWER-440/230 type and the NPP V-2 twin-units of WWER-440/213 type at Jaslovske Bohunice, Slovak Republic, in 1992. It represents a superstructure to the existing reactor unit process computers RPP-16S and IV 500 MA at the NPP V-1 and IVS Komplex Uran 2M and KVRK at the NPP V-2. The principal goal of TIS is to supply both the main control room staff and the NPP operation personnel and operation mode engineers with process information in a larger extent and on a higher level than the existing process computers do. TIS provides following process supervision functions: Taking over Data, Data Processing, Operative and Historical Data Collection, Active Alarm Management, Mimic Diagrams, REAL-time and Historical Trending, Horizontal Bargraphs, Data Tables, Report Generation, Shift Supervisor Support in case of Failure/Accident at NPP, User Database Applications, Computerized Operating Procedures, Programmable Prompts to Operator, ''Desk-top'' Calculator, Communication with Professional Departments, Auto-diagnostics. TIS is a PC local area network of QNX NET type, its data transmission rate being 2.5 Mbits/second. TIS is run under QNX operating system. Application software modules are written in QNX C and C-86 languages. Some functions were completed in OnCmd v.4.2 database environment. (author). 2 figs