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SISIFO-GAS A COMPUTERIZED SYSTEM TO SUPPORT SEVERE ACCIDENTS TRAINING AND MANAGEMENT

This paper introduces SISIFO-GAS, a computerized system designed to support severe accidents training and management. It provides a technical description and characteristics of the system, along with an introduction to the database and decision modules. The system utilizes the MAAP4 SCADA system and offers an online plant data interface. This workshop took place in March 29-31, 2004 in Köln, Germany.

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SISIFO-GAS A COMPUTERIZED SYSTEM TO SUPPORT SEVERE ACCIDENTS TRAINING AND MANAGEMENT

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

  2. TABLE OF CONTENTS • INTRODUCTION • BACKGROUND • TECHNICAL DESCRIPTION • CHARACTERISTICS • DEMO SISIFO-GAS

  3. INTRODUCTION DATABASE DECISION MODULES MAAP4 SCADA SYSTEM GRAPHIC INTERFACE ON-LINE PLANT DATA SISIFO-GAS Property of: SEVERE ACCIDENT TRAINING SEVERE ACCIDENT MANAGEMENT SISIFO-GAS I - 1/3

  4. TECNATOM CAPACITIES 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 SISIFO-GAS I - 2/3

  5. IBERINCO CAPACITIES 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 SISIFO-GAS I - 3/3

  6. BACKGROUND • BEGINNING (1997-1998): HALDEN PROJECT • APPLICATION (1999-2002): COFRENTES NPP SISIFO-GAS B - 1/5

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

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

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

  10. BACKGROUND 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 SISIFO-GAS B - 5/5

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

  12. TECHNICAL DESCRIPTION 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 TREES • PARAMETER PROCESSING STRUCTURE USING FUZZY LOGIC SISIFO-GAS T - 2/7

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

  14. TECHNICAL DESCRIPTION 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 TREES • PARAMETER PROCESSING STRUCTURE USING FUZZY LOGIC • ADJUST THE INPUT MAAP4 CODE TO REPRODUCE THE SEQUENCE SISIFO-GAS T - 4/7

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

  16. TECHNICAL DESCRIPTION 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 SISIFO-GAS T - 6/7

  17. TECHNICAL DESCRIPTION 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 SISIFO-GAS T - 7/7

  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 SISIFO-GAS C - 1/11

  19. MAIN SCREEN SISIFO-GAS C - 2/11

  20. CHARACTERISTICS MODULES CONTROL • THE ON-LINE RECEPTION OF THE MOST SIGNIFICANT PLANT DATA IS DISPLAYED AS PUNCTUAL VALUES (9 SCREENS) AND/ORPLOTS • 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: • 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. SISIFO-GAS C - 3/11

  21. FITTING MODULE STATUS SISIFO-GAS C - 4/11

  22. CHARACTERISTICS 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) • PROGNOSIS • PERMITS TO SEE THE BEHAVIOUR AND THE FINAL STATUS OF OTHER SEQUENCES WITH SIMILAR INITIAL CONDITIONS (DATAMAAP) • SEQUENCE EVOLUTION (PROGNOSIS) WITH MAAP4. SISIFO-GAS C - 5/11

  23. SOURCE TERM CATEGORIES SISIFO-GAS C - 6/11

  24. CHARACTERISTICS ACCIDENT TRAINING MODE • TO REPRODUCE AN OLD SEQUENCE • PERMITS TO SAW AS A FILM, USING THE GRAPHICAL DISPLAYS, A SEQUENCE STORED INTO THE DATABASE • 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 DATABASE • DATAMAAP • DATABASE ON ACCESS, STRUCTURED AND USER-FRIENDLY, WITH A DETAILED INFORMATION ON THE SEQUENCES STORED AND PLOTS SISIFO-GAS C - 7/11

  25. CONTAINMENT DISPLAY SISIFO-GAS C - 8/11

  26. SYSTEMS DISPLAY SISIFO-GAS C - 9/11

  27. DATABASE - MAIN SCREEN SISIFO-GAS C - 10/11

  28. DATABASE - PLOT SISIFO-GAS C - 11/11

  29. DEMO 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 SISIFO-GAS D - 1/1

  30. SISIFO-GAS THE END SISIFO-GAS

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