1 / 17

Reporting on I&C status and recommendations to IAEA

Meeting of the IAEA Technical Working Group on Nuclear Power Plant Instrumentation and Control (TWG-NPPIC) 20 -22 May 2009 IAEA Vienna. Reporting on I&C status and recommendations to IAEA Arndt Lindner Institute for Safety Technology (ISTec) Garching. TWG-NPPIC. Content.

arnon
Download Presentation

Reporting on I&C status and recommendations to IAEA

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Meeting of the IAEA Technical Working Group on Nuclear Power Plant Instrumentation and Control (TWG-NPPIC)20-22 May 2009IAEA Vienna Reporting on I&C status and recommendations to IAEA Arndt LindnerInstitute for Safety Technology (ISTec) Garching

  2. TWG-NPPIC Content • Nuclear energy in Germany • I&C status in Germany • Recommendations to IAEA • Conclusions

  3. TWG-NPPIC Nuclear Energy in Germany There are spent fuel interim storages at all sites

  4. TWG-NPPIC Nuclear Energy in Germany Nuclear energy provides 22,1% of power generation

  5. TWG-NPPIC Nuclear Energy in Germany • “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 • Limitation and reactor control systems (GKN, KKU, KKI) • Modernized main control room (KKI) • Independent emergency protection system (KKP) • Turbine control and protection in several NPPs • Applications for digital protection systems have been submitted (GKN, KWB)

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

  7. TWG-NPPIC Nuclear Energy in Germany

  8. TWG-NPPIC I&C status in Germany • Although lots of information about measures to overcome CCF discussion on that issue starts again • IEC 62340 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 • Situation is complicated due to application of competing standards

  9. TWG-NPPIC I&C status in Germany • Example: Safety classification • IAEA: • IEC 61226: • IEC 61508: • 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. TWG-NPPIC I&C status in Germany Industry makes proposals Regulators have additional requirements Licensed is what neither industry nor regulators want

  11. TWG-NPPIC I&C status in Germany

  12. TWG-NPPIC I&C status in Germany

  13. TWG-NPPIC I&C status in Germany

  14. TWG-NPPIC Recommendations to IAEA Basis: List of recommendations of TWG-NPPCI Members to the IAEA to be considered in the 2008-2009 and 2010-2011 Activities Design, Qualification, and Application of Digital I&C Systems Modernization of I&C Systems and Components I&C HW and SW Life-Cycle Related Issues Human Factors and Reliability, MCR Design, HSI Improvement and Optimization of Equipment and System Performance I&C Knowledge Management and Transfer; Aging Workforce Utilizing Lessons Learned in Operation, Maintenance, and Modernization of I&C Licensing I&C Systems Emerging Technologies

  15. TWG-NPPIC Recommendations to IAEA • Signal validation based on modern equipment (c, e, i) • Complexity of I&C systems, equipment and software (a, h) • Concentration of functions on single CPUs (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)

  16. TWG-NPPIC Recommendations to IAEA • Control of CCF (a, h) • 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) • Application of competing standards (nuclear vs. nonnuclear) in licensing procedures (a, h)

  17. TWG-NPPIC Recommendations to IAEA

More Related