Presentation is loading. Please wait.

Presentation is loading. Please wait.

Reporting on I&C status and recommendations to IAEA

Similar presentations


Presentation on theme: "Reporting on I&C status and recommendations to IAEA"— Presentation transcript:

1 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) May 2009 IAEA Vienna Reporting on I&C status and recommendations to IAEA Arndt Lindner Institute for Safety Technology (ISTec) Garching

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

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

4 TWG-NPPIC Nuclear energy provides 22,1% of power generation
Nuclear Energy in Germany NPP in operation Output (MWel) Start of comercial operation Biblis A 1225 1975 Biblis B 1300 1977 Brokdorf 1440 1986 Brunsbüttel 806 Emsland 1400 1988 Grafenrheinfeld 1345 1982 Grohnde 1430 1985 Gundremmingen B 1344 1984 Gundremmingen C Isar 1 912 1979 Isar 2 1475 Krümmel 1402 Neckarwestheim I 840 1976 Neckarwestheim II 1989 Philippsburg 1 926 1980 Philippsburg 2 1458 Unterweser 1410 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 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 Example: Safety classification IAEA: Functions of Category A
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 Industry makes proposals
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 Ri Redundancy i; i = 1, 2, 3, 4 A
Sub-system A B Sub-system B IA Set of input signals of sub system A IB Set of input signals of sub system B PLCAi PLC(s) Ai; i = 1, 2, 3, 4 PLCBi PLC(s) Bi; i = 1, 2, 3, 4 i Internal run time of redundancy i

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 and 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 Signal validation based on modern equipment (c, e, i)
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 Control of CCF (a, h)
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


Download ppt "Reporting on I&C status and recommendations to IAEA"

Similar presentations


Ads by Google