Institut für Sicherheitstechnologie (ISTec) GmbH
Meeting of the IAEA Technical Working Group on Meeting of the IAEA Technical Working Group on Nuclear Power Plant Instrumentation and Control Nuclear Power Plant Instrumentation and Control
(TWG-NPPIC)(TWG-NPPIC)2020-22 May 2009-22 May 2009
IAEA ViennaIAEA Vienna
Reporting on I&C status and recommendations to IAEAReporting on I&C status and recommendations to IAEA
Arndt LindnerArndt LindnerInstitute for Safety Technology (ISTec) GarchingInstitute for Safety Technology (ISTec) Garching
Institut für Sicherheitstechnologie (ISTec) GmbHFolie Nr. 2
TWG-NPPICTWG-NPPICContent
1.1. Nuclear energy in GermanyNuclear energy in Germany
2.2. I&C status in GermanyI&C status in Germany
3.3. Recommendations to IAEARecommendations to IAEA
4.4. ConclusionsConclusions
Institut für Sicherheitstechnologie (ISTec) GmbHFolie Nr. 3
TWG-NPPICTWG-NPPICNuclear Energy in Germany
There are spent fuel There are spent fuel interim storages at interim storages at all sitesall sites
Institut für Sicherheitstechnologie (ISTec) GmbHFolie Nr. 4
TWG-NPPICTWG-NPPICNuclear 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 1977
Emsland 1400 1988
Grafenrheinfeld 1345 1982
Grohnde 1430 1985
Gundremmingen B 1344 1984
Gundremmingen C 1344 1985
Isar 1 912 1979
Isar 2 1475 1988
Krümmel 1402 1984
Neckarwestheim I 840 1976
Neckarwestheim II 1400 1989
Philippsburg 1 926 1980
Philippsburg 2 1458 1985
Unterweser 1410 1976
Nuclear energy Nuclear energy providesprovides22,1% of power 22,1% of power generationgeneration
Institut für Sicherheitstechnologie (ISTec) GmbHFolie Nr. 5
TWG-NPPICTWG-NPPICNuclear Energy in Germany
““Consensus on Nuclear Power” (from June 11, 2001) Consensus on Nuclear Power” (from June 11, 2001) is still valid (phase-out of nuclear power)is still valid (phase-out of nuclear power)
Several NPPs plan and implement I&C up-gradesSeveral NPPs plan and implement I&C up-grades
Limitation and reactor control systems (GKN, Limitation and reactor control systems (GKN, KKU, KKI)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 NPPsTurbine control and protection in several NPPs
Applications for digital protection systems have been Applications for digital protection systems have been submitted (GKN, KWB)submitted (GKN, KWB)
Institut für Sicherheitstechnologie (ISTec) GmbHFolie Nr. 6
TWG-NPPICTWG-NPPICNuclear Energy in Germany
Update of the nuclear regulatory framework Update of the nuclear regulatory framework Revision D now availableRevision D now available((http://regelwerk.grs.de/))
12 modules12 modules I&C is subject-matter of Module 5I&C is subject-matter of Module 5 The modules are available only in The modules are available only in
German languageGerman language
Institut für Sicherheitstechnologie (ISTec) GmbHFolie Nr. 7
TWG-NPPICTWG-NPPICNuclear Energy in Germany
Institut für Sicherheitstechnologie (ISTec) GmbHFolie Nr. 8
TWG-NPPICTWG-NPPICI&C status in Germany
Although lots of information about measures to Although lots of information about measures to overcome CCF discussion on that issue starts againovercome CCF discussion on that issue starts again
IEC 62340 Nuclear power plants - Instrumentation and IEC 62340 Nuclear power plants - Instrumentation and control systems important to safety - Requirements for control systems important to safety - Requirements for coping with common cause failure (CCF) is acceptedcoping with common cause failure (CCF) is accepted
Application to German NPPs is discussed Application to German NPPs is discussed controversiallycontroversially
Situation is complicated due to application of Situation is complicated due to application of competing standardscompeting standards
Institut für Sicherheitstechnologie (ISTec) GmbHFolie Nr. 9
TWG-NPPICTWG-NPPICI&C status in Germany
Example: Safety classificationExample: Safety classification
IAEA:IAEA:
IEC 61226:IEC 61226:
IEC 61508:IEC 61508:
ISO 13849:ISO 13849:
Functions of Category AFunctions of Category BFunctions of Category CNon-categorized functions
Safety Integrity Level (SIL) 0Safety Integrity Level (SIL) 1Safety Integrity Level (SIL) 2Safety Integrity Level (SIL) 3Safety Integrity Level (SIL) 4
Performance Level (PL) aPerformance Level (PL) bPerformance Level (PL) cPerformance Level (PL) dPerformance Level (PL) e
Institut für Sicherheitstechnologie (ISTec) GmbHFolie Nr. 10
TWG-NPPICTWG-NPPICI&C status in Germany
Industry makes proposalsIndustry makes proposals
Regulators have additional requirements
Regulators have additional requirements
Licensed is what neither industry nor regulators
want
Licensed is what neither industry nor regulators
want
Institut für Sicherheitstechnologie (ISTec) GmbHFolie Nr. 11
TWG-NPPICTWG-NPPICI&C status in Germany
IIAA Set of input signals of sub system ASet of input signals of sub system A
IIBB Set of input signals of sub systemSet of input signals of sub system B B
PLCPLCAiAi PLC(s) APLC(s) Aii; i = 1, 2, 3, 4 ; i = 1, 2, 3, 4
PLCPLCBiBi PLC(s) BPLC(s) Bii; i = 1, 2, 3, 4; i = 1, 2, 3, 4
ii Internal run time of redundancy iInternal run time of redundancy i
RRii Redundancy i; i = 1, 2, 3, 4Redundancy i; i = 1, 2, 3, 4
AA Sub-system ASub-system A
BB Sub-system BSub-system B
Institut für Sicherheitstechnologie (ISTec) GmbHFolie Nr. 12
TWG-NPPICTWG-NPPICI&C status in Germany
Institut für Sicherheitstechnologie (ISTec) GmbHFolie Nr. 13
TWG-NPPICTWG-NPPICI&C status in Germany
Institut für Sicherheitstechnologie (ISTec) GmbHFolie Nr. 14
TWG-NPPICTWG-NPPICRecommendations to IAEA
Basis:Basis: List of recommendations of TWG-NPPCI List of recommendations of TWG-NPPCI Members to the IAEA to be considered in the Members to the IAEA to be considered in the 2008-2009 and 2010-2011 Activities2008-2009 and 2010-2011 Activities
a.a. Design, Qualification, and Application of Digital I&C SystemsDesign, Qualification, and Application of Digital I&C Systemsb.b. Modernization of I&C Systems and ComponentsModernization of I&C Systems and Componentsc.c. I&C HW and SW Life-Cycle Related IssuesI&C HW and SW Life-Cycle Related Issuesd.d. Human Factors and Reliability, MCR Design, HSIHuman Factors and Reliability, MCR Design, HSIe.e. Improvement and Optimization of Equipment and System Improvement and Optimization of Equipment and System
PerformancePerformancef.f. I&C Knowledge Management and Transfer; Aging WorkforceI&C Knowledge Management and Transfer; Aging Workforceg.g. Utilizing Lessons Learned in Operation, Maintenance, and Utilizing Lessons Learned in Operation, Maintenance, and
Modernization of I&CModernization of I&Ch.h. Licensing I&C SystemsLicensing I&C Systemsi.i. Emerging TechnologiesEmerging Technologies
Institut für Sicherheitstechnologie (ISTec) GmbHFolie Nr. 15
TWG-NPPICTWG-NPPICRecommendations 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 Complexity of I&C systems, equipment and software (a, h)(a, h)
Concentration of functions on single CPUs (h)Concentration of functions on single CPUs (h)
Qualification and use of FPGA and similar “hard Qualification and use of FPGA and similar “hard programmed” equipment (a, h)programmed” equipment (a, h)
Electromagnetic Influence on I&C equipment by Electromagnetic Influence on I&C equipment by conducted and radiated disturbances (a, i)conducted and radiated disturbances (a, i)
Institut für Sicherheitstechnologie (ISTec) GmbHFolie Nr. 16
TWG-NPPICTWG-NPPICRecommendations 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 Use of I&C equipment not designed for use in NPPs in nuclear safety applications (a, h)in nuclear safety applications (a, h)
Application of competing standards (nuclear vs. Application of competing standards (nuclear vs. nonnuclear) in licensing procedures (a, h)nonnuclear) in licensing procedures (a, h)
Institut für Sicherheitstechnologie (ISTec) GmbHFolie Nr. 17
TWG-NPPICTWG-NPPICRecommendations to IAEA