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Institut für Sicherheitstechnologie (ISTec) GmbH Meeting of the IAEA Technical Working Group on Nuclear Power Plant Instrumentation and Control (TWG-NPPIC)

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Presentation on theme: "Institut für Sicherheitstechnologie (ISTec) GmbH Meeting of the IAEA Technical Working Group on Nuclear Power Plant Instrumentation and Control (TWG-NPPIC)"— Presentation transcript:

1 Institut für Sicherheitstechnologie (ISTec) GmbH Meeting of the IAEA Technical Working Group on Nuclear Power Plant Instrumentation and Control (TWG-NPPIC) May 2009 IAEA Vienna Reporting on I&C status and recommendations to IAEA Arndt Lindner Institute for Safety Technology (ISTec) Garching

2 Institut für Sicherheitstechnologie (ISTec) GmbH Folie Nr. 2 TWG-NPPIC Content 1.Nuclear energy in Germany 2.I&C status in Germany 3.Recommendations to IAEA 4.Conclusions

3 Institut für Sicherheitstechnologie (ISTec) GmbH Folie Nr. 3 TWG-NPPIC Nuclear Energy in Germany There are spent fuel interim storages at all sites

4 Institut für Sicherheitstechnologie (ISTec) GmbH Folie Nr. 4 TWG-NPPIC Nuclear Energy in Germany NPP in operationOutput (MWel)Start of comercial operation Biblis A Biblis B Brokdorf Brunsbüttel Emsland Grafenrheinfeld Grohnde Gundremmingen B Gundremmingen C Isar Isar Krümmel Neckarwestheim I Neckarwestheim II Philippsburg Philippsburg Unterweser Nuclear energy provides 22,1% of power generation

5 Institut für Sicherheitstechnologie (ISTec) GmbH Folie Nr. 5 TWG-NPPIC Nuclear Energy in Germany Consensus on Nuclear Power (from June 11, 2001) is still valid (phase-out of nuclear power) Consensus on Nuclear Power (from June 11, 2001) is still valid (phase-out of nuclear power) Several NPPs plan and implement I&C up-grades Several NPPs plan and implement I&C up-grades Limitation and reactor control systems (GKN, KKU, KKI) Limitation and reactor control systems (GKN, KKU, KKI) Modernized main control room (KKI) Modernized main control room (KKI) Independent emergency protection system (KKP) Independent emergency protection system (KKP) Turbine control and protection in several NPPs Turbine control and protection in several NPPs Applications for digital protection systems have been submitted (GKN, KWB) Applications for digital protection systems have been submitted (GKN, KWB)

6 Institut für Sicherheitstechnologie (ISTec) GmbH Folie Nr. 6 TWG-NPPIC Nuclear Energy in Germany Update of the nuclear regulatory framework Revision D now available (http://regelwerk.grs.de/) Update of the nuclear regulatory framework Revision D now available (http://regelwerk.grs.de/)http://regelwerk.grs.de/ 12 modules 12 modules I&C is subject-matter of Module 5 I&C is subject-matter of Module 5 The modules are available only in German language The modules are available only in German language

7 Institut für Sicherheitstechnologie (ISTec) GmbH Folie Nr. 7 TWG-NPPIC Nuclear Energy in Germany

8 Institut für Sicherheitstechnologie (ISTec) GmbH Folie Nr. 8 TWG-NPPIC I&C status in Germany Although lots of information about measures to overcome CCF discussion on that issue starts again Although lots of information about measures to overcome CCF discussion on that issue starts again IEC Nuclear power plants - Instrumentation and control systems important to safety - Requirements for coping with common cause failure (CCF) is accepted IEC Nuclear power plants - Instrumentation and control systems important to safety - Requirements for coping with common cause failure (CCF) is accepted Application to German NPPs is discussed controversially Application to German NPPs is discussed controversially Situation is complicated due to application of competing standards Situation is complicated due to application of competing standards

9 Institut für Sicherheitstechnologie (ISTec) GmbH Folie Nr. 9 TWG-NPPIC I&C status in Germany Example: Safety classification Example: Safety classification IAEA: IAEA: IEC 61226: IEC 61226: IEC 61508: IEC 61508: ISO 13849: ISO 13849: Functions of Category A Functions of Category B Functions of Category C Non-categorized functions Safety Integrity Level (SIL) 0 Safety Integrity Level (SIL) 1 Safety Integrity Level (SIL) 2 Safety Integrity Level (SIL) 3 Safety Integrity Level (SIL) 4 Performance Level (PL) a Performance Level (PL) b Performance Level (PL) c Performance Level (PL) d Performance Level (PL) e

10 Institut für Sicherheitstechnologie (ISTec) GmbH Folie Nr. 10 TWG-NPPIC I&C status in Germany Industry makes proposals Regulators have additional requirements Licensed is what neither industry nor regulators want

11 Institut für Sicherheitstechnologie (ISTec) GmbH Folie Nr. 11 TWG-NPPIC I&C status in Germany IAIAIAIA Set of input signals of sub system A IBIBIBIB Set of input signals of sub system B PLC Ai PLC(s) A i ; i = 1, 2, 3, 4 PLC Bi PLC(s) B i ; i = 1, 2, 3, 4 i Internal run time of redundancy i RiRiRiRi Redundancy i; i = 1, 2, 3, 4 A Sub-system A B Sub-system B

12 Institut für Sicherheitstechnologie (ISTec) GmbH Folie Nr. 12 TWG-NPPIC I&C status in Germany

13 Institut für Sicherheitstechnologie (ISTec) GmbH Folie Nr. 13 TWG-NPPIC I&C status in Germany

14 Institut für Sicherheitstechnologie (ISTec) GmbH Folie Nr. 14 TWG-NPPIC Recommendations to IAEA Basis:List of recommendations of TWG-NPPCI Members to the IAEA to be considered in the and Activities a.Design, Qualification, and Application of Digital I&C Systems b.Modernization of I&C Systems and Components c.I&C HW and SW Life-Cycle Related Issues d.Human Factors and Reliability, MCR Design, HSI e.Improvement and Optimization of Equipment and System Performance f.I&C Knowledge Management and Transfer; Aging Workforce g.Utilizing Lessons Learned in Operation, Maintenance, and Modernization of I&C h.Licensing I&C Systems i.Emerging Technologies

15 Institut für Sicherheitstechnologie (ISTec) GmbH Folie Nr. 15 TWG-NPPIC Recommendations to IAEA Signal validation based on modern equipment (c, e, i) Signal validation based on modern equipment (c, e, i) Complexity of I&C systems, equipment and software (a, h) Complexity of I&C systems, equipment and software (a, h) Concentration of functions on single CPUs (h) Concentration of functions on single CPUs (h) Qualification and use of FPGA and similar hard programmed equipment (a, h) Qualification and use of FPGA and similar hard programmed equipment (a, h) Electromagnetic Influence on I&C equipment by conducted and radiated disturbances (a, i) Electromagnetic Influence on I&C equipment by conducted and radiated disturbances (a, i)

16 Institut für Sicherheitstechnologie (ISTec) GmbH Folie Nr. 16 TWG-NPPIC Recommendations to IAEA Control of CCF (a, h) Control of CCF (a, h) Cyber security (new activities in IEC/SC45A) (a, h, i) Cyber security (new activities in IEC/SC45A) (a, h, i) Use of I&C equipment not designed for use in NPPs in nuclear safety applications (a, h) Use of I&C equipment not designed for use in NPPs in nuclear safety applications (a, h) Application of competing standards (nuclear vs. nonnuclear) in licensing procedures (a, h) Application of competing standards (nuclear vs. nonnuclear) in licensing procedures (a, h)

17 Institut für Sicherheitstechnologie (ISTec) GmbH Folie Nr. 17 TWG-NPPIC Recommendations to IAEA


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