1. SISIFO-GAS A COMPUTERIZED SYSTEM TO SUPPORT SEVERE ACCIDENTS TRAINING AND MANAGEMENT WGRisk Workshop March 29-31, 2004 Köln, Germany César Serrano

2. WGRisk Workshop, Mar-2004 SISIFO-GAS 2 TABLE OF CONTENTS INTRODUCTION BACKGROUND TECHNICAL DESCRIPTION CHARACTERISTICS DEMO INTRODUCTION BACKGROUND TECHNICAL DESCRIPTION CHARACTERISTICS DEMO

3. WGRisk Workshop, Mar-2004 SISIFO-GAS 3 INTRODUCTION I - 1/3 SEVERE ACCIDENT TRAINING SEVERE ACCIDENT MANAGEMENT Property of: SISIFO-GAS DATABASE ON-LINE PLANT DATA GRAPHIC INTERFACE DECISION MODULES MAAP4

4. WGRisk Workshop, Mar-2004 SISIFO-GAS 4 TECNATOM ENGINEERING SERVICES COMPANY COVERING THE FOLLOWING AREAS: TRAINING AND SIMULATION: PWR AND BWR FULL-SCOPE, MULTI- FUNCTIONAL SIMULATORS,….. PLANT OPERATION SUPPORT: EOP AND SAMG’S DEVELOPMENT AND TRAINING, MAN-MACHINE INTERFACE,….. INSPECTION (STRUCTURAL INTEGRITY), TESTING (NON-DESTRUCTIVE) AND MATERIALS. DESIGN AND MANUFACTURING, EXPERIMENTAL FACILITIES TECNATOM ENGINEERING SERVICES COMPANY COVERING THE FOLLOWING AREAS: TRAINING AND SIMULATION: PWR AND BWR FULL-SCOPE, MULTI- FUNCTIONAL SIMULATORS,….. PLANT OPERATION SUPPORT: EOP AND SAMG’S DEVELOPMENT AND TRAINING, MAN-MACHINE INTERFACE,….. INSPECTION (STRUCTURAL INTEGRITY), TESTING (NON-DESTRUCTIVE) AND MATERIALS. DESIGN AND MANUFACTURING, EXPERIMENTAL FACILITIES TECNATOM CAPACITIES I - 2/3

5. WGRisk Workshop, Mar-2004 SISIFO-GAS 5 IBERDROLA Ingeniería y Consultoría (IBERINCO) ENGINEERING AND CONSULTING SERVICES COMPANY COVERING THE FOLLOWING AREAS: CONSULTING AND STUDIES: SITE/IMPLEMENTATION, SAFETY SYSTEMS ASSESSMENT,…. PROJECT ENGINEERING: DESIGN MODIFICATIONS, FINAL SAFETY STUDY UPDATING, RADIOLOGICAL PROTECTION,….. OPERATION ENGINEERING: LICENSE AND SAFETY ANALYSIS, PSA, SUPPORT TO NUCLEAR FUEL MANAGEMENT, WASTE MANAGEMENT. MAINTENANCE ENGINEERING IBERDROLA Ingeniería y Consultoría (IBERINCO) ENGINEERING AND CONSULTING SERVICES COMPANY COVERING THE FOLLOWING AREAS: CONSULTING AND STUDIES: SITE/IMPLEMENTATION, SAFETY SYSTEMS ASSESSMENT,…. PROJECT ENGINEERING: DESIGN MODIFICATIONS, FINAL SAFETY STUDY UPDATING, RADIOLOGICAL PROTECTION,….. OPERATION ENGINEERING: LICENSE AND SAFETY ANALYSIS, PSA, SUPPORT TO NUCLEAR FUEL MANAGEMENT, WASTE MANAGEMENT. MAINTENANCE ENGINEERING IBERINCO CAPACITIES I - 3/3

6. WGRisk Workshop, Mar-2004 SISIFO-GAS 6 BACKGROUND BEGINNING (1997-1998):HALDEN PROJECTHALDEN PROJECT APPLICATION (1999-2002):COFRENTES NPPCOFRENTES NPP BEGINNING (1997-1998):HALDEN PROJECTHALDEN PROJECT APPLICATION (1999-2002):COFRENTES NPPCOFRENTES NPP B - 1/5

7. WGRisk Workshop, Mar-2004 SISIFO-GAS 7 BACKGROUND B - 2/5 OECD HALDEN REACTOR PROJECT TITLE: “DEVELOPMENT OF AN EXTENSION OF THE CAMS SYSTEM TO SEVERE ACCIDENTS MANAGEMENT” ORIGINAL DEVELOPMENT : COMPUTERISED ACCIDENTS MANAGEMENT SUPPORT (CAMS)ORIGINAL DEVELOPMENT NEW CONTRIBUTION, EXTENSION TO SEVERE ACCIDENTS FOR GENERIC BWR AND PWR:NEW CONTRIBUTION –DIAGNOSIS AND FITTING MODULES DEVELOPMENT –INTERFACE WITH THE TRACKING/PREDICTIVE SIMULATOR (MAAP4) OECD HALDEN REACTOR PROJECT TITLE: “DEVELOPMENT OF AN EXTENSION OF THE CAMS SYSTEM TO SEVERE ACCIDENTS MANAGEMENT” ORIGINAL DEVELOPMENT : COMPUTERISED ACCIDENTS MANAGEMENT SUPPORT (CAMS)ORIGINAL DEVELOPMENT NEW CONTRIBUTION, EXTENSION TO SEVERE ACCIDENTS FOR GENERIC BWR AND PWR:NEW CONTRIBUTION –DIAGNOSIS AND FITTING MODULES DEVELOPMENT –INTERFACE WITH THE TRACKING/PREDICTIVE SIMULATOR (MAAP4)

8. WGRisk Workshop, Mar-2004 SISIFO-GAS 8 Plant Data Data Acquisition Signal Validation Man-Machine Interface PSA Module Strategy Generator Critical Function Monitor CAMS - ORIGINAL DEVELOPMENT APROS Tracking/Predictive Simulator Non-Severe Accident State Identification B - 3/5

9. WGRisk Workshop, Mar-2004 SISIFO-GAS 9 CAMS - NEW DEVELOPMENT Plant Data Data Acquisition Signal Validation Diagnosis Module MAAP 4 Tracking/Predictive Simulator Severe Accident Fitting Module Man-Machine Interface PSA Module Strategy Generator Critical Function Monitor B - 4/5

10. WGRisk Workshop, Mar-2004 SISIFO-GAS 10 BACKGROUND B - 5/5 COFRENTES NPP APPLICATION (1096MWe, BWR/6 GE DESIGN, MARK-III CONTAINMENT) TAKING AS STARTING POINT THE HALDEN GENERIC MODULES, THE DEVELOPMENT OF THE SPECIFIC DIAGNOSIS / FITTING MODULES FOR THE PLANT WAS CARRIED OUT. THE MAAP4 CODE WAS SELECTED AS TRACKING/PREDICTIVE SIMULATOR DUE TO THE LARGE EXPERIENCE OF USE INTO THE PSA/IPE. NEW CAPACITIES: –INTERACTIVE GRAPHIC CAPACITY –DATABASE WITH MAAP SEQUENCES (PROGNOSIS) –MAN-MACHINE INTERFACE: SCADA-FACTORY LINK COFRENTES NPP APPLICATION (1096MWe, BWR/6 GE DESIGN, MARK-III CONTAINMENT) TAKING AS STARTING POINT THE HALDEN GENERIC MODULES, THE DEVELOPMENT OF THE SPECIFIC DIAGNOSIS / FITTING MODULES FOR THE PLANT WAS CARRIED OUT. THE MAAP4 CODE WAS SELECTED AS TRACKING/PREDICTIVE SIMULATOR DUE TO THE LARGE EXPERIENCE OF USE INTO THE PSA/IPE. NEW CAPACITIES: –INTERACTIVE GRAPHIC CAPACITY –DATABASE WITH MAAP SEQUENCES (PROGNOSIS) –MAN-MACHINE INTERFACE: SCADA-FACTORY LINK

11. WGRisk Workshop, Mar-2004 SISIFO-GAS 11 TECHNICAL DESCRIPTION FUNCTIONAL DIAGRAM T - 1/7 SCADA DIAG. M FITT. M MAAP 4 DATAMAAP GRAPHIC INTERF. SIEC COFRENTES NPP WINDOWS 95WINDOWS NT SOFTWARE REQUIREMENTS

12. WGRisk Workshop, Mar-2004 SISIFO-GAS 12 T - 2/7 DIAGNOSIS MODULE THE PURPOSE OF THE DIAGNOSIS MODULE IS TO DETERMINE THE PLANT STATE TO BE USED INTO THE FITTING MODULE AND IN THE PREPARATION OF THE ENTRY DATA TO THE SIMULATOR CODE DATA PLANT IDENTIFICATION –LIST OF RELEVANT SIGNALS, PARAMETERS AND SYSTEMS THAT COULD INFLUENCE THE ACCIDENT EVOLUTION DETERMINE THE PLANT STATE (INITIATOR EVENT, SYSTEMS AND BARRIERS OF RETENTION) THROUGH LOGIC RULES: –MANAGEMENT OF THE INSTRUMENTATION DATA AND THEIR VARIATION –LOGIC RULES DEFINED AS LOGIC TREESLOGIC TREES –PARAMETER PROCESSING STRUCTURE USING FUZZY LOGIC DIAGNOSIS MODULE THE PURPOSE OF THE DIAGNOSIS MODULE IS TO DETERMINE THE PLANT STATE TO BE USED INTO THE FITTING MODULE AND IN THE PREPARATION OF THE ENTRY DATA TO THE SIMULATOR CODE DATA PLANT IDENTIFICATION –LIST OF RELEVANT SIGNALS, PARAMETERS AND SYSTEMS THAT COULD INFLUENCE THE ACCIDENT EVOLUTION DETERMINE THE PLANT STATE (INITIATOR EVENT, SYSTEMS AND BARRIERS OF RETENTION) THROUGH LOGIC RULES: –MANAGEMENT OF THE INSTRUMENTATION DATA AND THEIR VARIATION –LOGIC RULES DEFINED AS LOGIC TREESLOGIC TREES –PARAMETER PROCESSING STRUCTURE USING FUZZY LOGIC TECHNICAL DESCRIPTION

13. WGRisk Workshop, Mar-2004 SISIFO-GAS 13 VESSEL FAILURE EARLY BYPASS NO BYPASS LATE BYPASS 1 HOUR AFTER VESSEL FAILURE DRYWELL BYPASS DRYWELL BYPASS NO YES NO YES NO YES NO YES TDW - TVESSEL >1 HOUR NO YES LOGIC RULES - DRYWEL BYPASS T - 3/7

14. WGRisk Workshop, Mar-2004 SISIFO-GAS 14 T - 4/7 FITTING MODULE THE PURPOSE OF THE FITTING MODULE IS TO CONTROL THE MAAP4 CODE EXECUTION COMPARING THEIR RESULTS WITH THE DATA PLANT (SIEC) PROCESSED THROUGH THE DIAGNOSIS MODULE EVALUATION OF THE DIFFERENCES: –SYSTEMS STATUS –PARAMETERS OF THE SOURCE TERM CATEGORY LOGIC TREE (PSA- LEVEL 2, STC) DETERMINE THE STC THROUGH LOGIC RULES: –LOGIC RULES DEFINED AS LOGIC TREESLOGIC TREES –PARAMETER PROCESSING STRUCTURE USING FUZZY LOGIC ADJUST THE INPUT MAAP4 CODE TO REPRODUCE THE SEQUENCE FITTING MODULE THE PURPOSE OF THE FITTING MODULE IS TO CONTROL THE MAAP4 CODE EXECUTION COMPARING THEIR RESULTS WITH THE DATA PLANT (SIEC) PROCESSED THROUGH THE DIAGNOSIS MODULE EVALUATION OF THE DIFFERENCES: –SYSTEMS STATUS –PARAMETERS OF THE SOURCE TERM CATEGORY LOGIC TREE (PSA- LEVEL 2, STC) DETERMINE THE STC THROUGH LOGIC RULES: –LOGIC RULES DEFINED AS LOGIC TREESLOGIC TREES –PARAMETER PROCESSING STRUCTURE USING FUZZY LOGIC ADJUST THE INPUT MAAP4 CODE TO REPRODUCE THE SEQUENCE TECHNICAL DESCRIPTION

15. WGRisk Workshop, Mar-2004 SISIFO-GAS 15 EVENT-V STC 61 YES RPV VENTED NO STC 2 YES RPV FAILURE CONTAINMENT FAILURE TIME CONTAINMENT FAILURE TIME NO YES NO STC 59STC 60 C NO CF LATE CF EARLY CF B STC 53 LATE CF EARLY CF NO CF A LOGIC RULES - STC T - 5/7

16. WGRisk Workshop, Mar-2004 SISIFO-GAS 16 T - 6/7 SCADA (FACTORY LINK) (SCADA - DATABASE - GRAPHIC INTERFACE) SCADA PROCESS IN REAL TIME DATA OF ALL MODULAR STRUCTURES REQUIRED (SIEC, MODULES, MAAP4 AND THE GRAPHIC INTERFACE) DATABASE OF ACCIDENT SEQUENCES ANALYSED WITH MAAP: –GENERAL DESCRIPTION –TIMING OF EVENTS –SYSTEMS/BARRIERS STATUS –SOURCE TERM RELEASED –OUTPUT VARIABLE PLOTS GRAPHIC INTERFACE SHOWING THE ACCIDENTS EVOLUTION AND WITH INTERACTIVE CAPACITIES TO BE USED WITH THE TRAINING MODE SCADA (FACTORY LINK) (SCADA - DATABASE - GRAPHIC INTERFACE) SCADA PROCESS IN REAL TIME DATA OF ALL MODULAR STRUCTURES REQUIRED (SIEC, MODULES, MAAP4 AND THE GRAPHIC INTERFACE) DATABASE OF ACCIDENT SEQUENCES ANALYSED WITH MAAP: –GENERAL DESCRIPTION –TIMING OF EVENTS –SYSTEMS/BARRIERS STATUS –SOURCE TERM RELEASED –OUTPUT VARIABLE PLOTS GRAPHIC INTERFACE SHOWING THE ACCIDENTS EVOLUTION AND WITH INTERACTIVE CAPACITIES TO BE USED WITH THE TRAINING MODE TECHNICAL DESCRIPTION

17. WGRisk Workshop, Mar-2004 SISIFO-GAS 17 T - 7/7 SOFTWARE REQUIREMENTS ACCIDENT ANALYSIS CODE: MAAP 4.0.3 CODE (MINOR MODIFICATIONS) SUPERVISORY CONTROL AND DATA ACQUISITION (SCADA): FACTORY LINK (RUN TIME LICENSE) EQUIPMENT CONNECTIVITY: PC ANYWHERE DATABASE IN ACCESS: DATAMAAP DIAGNOSIS & FITTING MODULES: –LOGIC RULES WITH C CODE –PARAMETER PROCESSING STRUCTURE WITH A FUZZY LOGIC BASED PROGRAMME OTHER INTERFACE PROGRAMMES SOFTWARE REQUIREMENTS ACCIDENT ANALYSIS CODE: MAAP 4.0.3 CODE (MINOR MODIFICATIONS) SUPERVISORY CONTROL AND DATA ACQUISITION (SCADA): FACTORY LINK (RUN TIME LICENSE) EQUIPMENT CONNECTIVITY: PC ANYWHERE DATABASE IN ACCESS: DATAMAAP DIAGNOSIS & FITTING MODULES: –LOGIC RULES WITH C CODE –PARAMETER PROCESSING STRUCTURE WITH A FUZZY LOGIC BASED PROGRAMME OTHER INTERFACE PROGRAMMES TECHNICAL DESCRIPTION

18. WGRisk Workshop, Mar-2004 SISIFO-GAS 18 CHARACTERISTICS OPERATIONAL MODES ON-LINE PROCESSES –TREATMENT OF THE PLANT DATA TO IDENTIFY POTENTIAL ACCIDENTAL SEQUENCES (INITIAL EVENTS INTO THE DIAGNOSIS MODULE) AND CONTROL THEIR EVOLUTION: MODULES CONTROL ACCIDENT MANAGEMENT MODE OFF-LINE PROCESSES –USER-FRIENDLY CAPACITIES DEVELOPED AROUND THE MAAP CODE TO IMPROVE THE KNOWLEDGE ABOUT THE SEQUENCES EVOLUTION: ACCIDENT TRAINING MODE OPERATIONAL MODES ON-LINE PROCESSES –TREATMENT OF THE PLANT DATA TO IDENTIFY POTENTIAL ACCIDENTAL SEQUENCES (INITIAL EVENTS INTO THE DIAGNOSIS MODULE) AND CONTROL THEIR EVOLUTION: MODULES CONTROL ACCIDENT MANAGEMENT MODE OFF-LINE PROCESSES –USER-FRIENDLY CAPACITIES DEVELOPED AROUND THE MAAP CODE TO IMPROVE THE KNOWLEDGE ABOUT THE SEQUENCES EVOLUTION: ACCIDENT TRAINING MODE C - 1/11

19. WGRisk Workshop, Mar-2004 SISIFO-GAS 19 MAIN SCREEN C - 2/11

20. WGRisk Workshop, Mar-2004 SISIFO-GAS 20 MODULES CONTROL THE ON-LINE RECEPTION OF THE MOST SIGNIFICANT PLANT DATA IS DISPLAYED AS PUNCTUAL VALUES (9 SCREENS) AND/OR PLOTS THE DATA ARE PROCESSED THROUGH THE DIAGNOSIS MODULE TO IDENTIFY AN INITIATOR EVENT AND WHEN IT OCCURS THE DISPLAY PERMITS TO VISUALIZE ALL THE PROCESSES ACTIVATED DURING THE MANAGEMENT MODE:DISPLAY –DIAGNOSIS AND PROGNOSIS STATUS: INPUTS, OUTPUTS, FUZZY LOGIC PROCESS –DATA COMMUNICATIONS BETWEEN PLANT AND SISIFO-GAS –MAAP STATUS: FITTING MODULE, ERRORS –TIME INTERVALS: PLANT DATA REFRESH, HISTORICAL DATA STORE, FROM THE INITIAL EVENT. MODULES CONTROL THE ON-LINE RECEPTION OF THE MOST SIGNIFICANT PLANT DATA IS DISPLAYED AS PUNCTUAL VALUES (9 SCREENS) AND/OR PLOTS THE DATA ARE PROCESSED THROUGH THE DIAGNOSIS MODULE TO IDENTIFY AN INITIATOR EVENT AND WHEN IT OCCURS THE DISPLAY PERMITS TO VISUALIZE ALL THE PROCESSES ACTIVATED DURING THE MANAGEMENT MODE:DISPLAY –DIAGNOSIS AND PROGNOSIS STATUS: INPUTS, OUTPUTS, FUZZY LOGIC PROCESS –DATA COMMUNICATIONS BETWEEN PLANT AND SISIFO-GAS –MAAP STATUS: FITTING MODULE, ERRORS –TIME INTERVALS: PLANT DATA REFRESH, HISTORICAL DATA STORE, FROM THE INITIAL EVENT. C - 3/11 CHARACTERISTICS

21. WGRisk Workshop, Mar-2004 SISIFO-GAS 21 FITTING MODULE STATUS C - 4/11

22. WGRisk Workshop, Mar-2004 SISIFO-GAS 22 ACCIDENT MANAGEMENT MODE DIAGNOSIS –PERMITS TO SEE THE LOGIC RULES DEVELOPED FOR THE DIAGNOSIS MODULE USED FOR THE IDENTIFICATION OF THE ACCIDENTAL SEQUENCE AND ITS EVOLUTION. –PERMITS TO SEE THE LOGIC RULES TO ASSIGN AN ENVIRONMENTAL SOURCE TERM RELEASE (LEVEL2-PSA TREE: STC)SOURCE TERM RELEASE PROGNOSIS –PERMITS TO SEE THE BEHAVIOUR AND THE FINAL STATUS OF OTHER SEQUENCES WITH SIMILAR INITIAL CONDITIONS (DATAMAAP) –SEQUENCE EVOLUTION (PROGNOSIS) WITH MAAP4. ACCIDENT MANAGEMENT MODE DIAGNOSIS –PERMITS TO SEE THE LOGIC RULES DEVELOPED FOR THE DIAGNOSIS MODULE USED FOR THE IDENTIFICATION OF THE ACCIDENTAL SEQUENCE AND ITS EVOLUTION. –PERMITS TO SEE THE LOGIC RULES TO ASSIGN AN ENVIRONMENTAL SOURCE TERM RELEASE (LEVEL2-PSA TREE: STC)SOURCE TERM RELEASE PROGNOSIS –PERMITS TO SEE THE BEHAVIOUR AND THE FINAL STATUS OF OTHER SEQUENCES WITH SIMILAR INITIAL CONDITIONS (DATAMAAP) –SEQUENCE EVOLUTION (PROGNOSIS) WITH MAAP4. C - 5/11 CHARACTERISTICS

23. WGRisk Workshop, Mar-2004 SISIFO-GAS 23 SOURCE TERM CATEGORIES C - 6/11

24. WGRisk Workshop, Mar-2004 SISIFO-GAS 24 ACCIDENT TRAINING MODE TO REPRODUCE AN OLD SEQUENCE –PERMITS TO SAW AS A FILM, USING THE GRAPHICAL DISPLAYS, A SEQUENCE STORED INTO THE DATABASEGRAPHICAL DISPLAYS TO REPRODUCE A NEW SEQUENCE –PERMITS EASILY TO GENERATE A NEW INPUT OF MAAP AND TO RUN IT AUTOMATICALLY, WITH THE “GASE” SUBPROGRAM –THE SEQUENCES CAN BE VIEWED AND INTERACTIVELY MODIFIED ON DISPLAY AND FINALLY STOPPED AND STORED IN THE DATABASEINTERACTIVELY MODIFIED DATAMAAP –DATABASE ON ACCESS, STRUCTURED AND USER-FRIENDLY, WITH A DETAILED INFORMATION ON THE SEQUENCES STORED AND PLOTS DETAILED INFORMATIONPLOTS ACCIDENT TRAINING MODE TO REPRODUCE AN OLD SEQUENCE –PERMITS TO SAW AS A FILM, USING THE GRAPHICAL DISPLAYS, A SEQUENCE STORED INTO THE DATABASEGRAPHICAL DISPLAYS TO REPRODUCE A NEW SEQUENCE –PERMITS EASILY TO GENERATE A NEW INPUT OF MAAP AND TO RUN IT AUTOMATICALLY, WITH THE “GASE” SUBPROGRAM –THE SEQUENCES CAN BE VIEWED AND INTERACTIVELY MODIFIED ON DISPLAY AND FINALLY STOPPED AND STORED IN THE DATABASEINTERACTIVELY MODIFIED DATAMAAP –DATABASE ON ACCESS, STRUCTURED AND USER-FRIENDLY, WITH A DETAILED INFORMATION ON THE SEQUENCES STORED AND PLOTS DETAILED INFORMATIONPLOTS C - 7/11 CHARACTERISTICS

25. WGRisk Workshop, Mar-2004 SISIFO-GAS 25 CONTAINMENT DISPLAY C - 8/11

26. WGRisk Workshop, Mar-2004 SISIFO-GAS 26 SYSTEMS DISPLAY C - 9/11

27. WGRisk Workshop, Mar-2004 SISIFO-GAS 27 DATABASE - MAIN SCREEN C - 10/11

28. WGRisk Workshop, Mar-2004 SISIFO-GAS 28 DATABASE - PLOT C - 11/11

29. WGRisk Workshop, Mar-2004 SISIFO-GAS 29 CHARACTERISTICS OF SISIFO-GAS STAGES 1.TO SEE THE ON-LINE CONNECTION WITH PLANT DATA (SIEC) 2.THE MANAGEMENT MODE: INITIATOR EVENT AND DIAGNOSIS 3.THE TRAINING MODE: OLD SEQUENCE 4.THE TRAINING MODE: NEW SEQUENCE 5.DATABASE Time 5:59 CHARACTERISTICS OF SISIFO-GAS STAGES 1.TO SEE THE ON-LINE CONNECTION WITH PLANT DATA (SIEC) 2.THE MANAGEMENT MODE: INITIATOR EVENT AND DIAGNOSIS 3.THE TRAINING MODE: OLD SEQUENCE 4.THE TRAINING MODE: NEW SEQUENCE 5.DATABASE Time 5:59 DEMO D - 1/1

30. WGRisk Workshop, Mar-2004 SISIFO-GAS 30 THE END SISIFO-GAS