I&C Challenges, Architecture and Lessons Learned, Status on EPR projects

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Meryl Arnold
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2011 The information in this document is AREVA property and is intended

1 I&C Challenges, Architecture and Lessons Learned, Status on EPR projects Nuclear Industry Localization Conference Cape Town 1-3 June 2011 The information in this document is AREVA property and is intended solely for the addressees. Reproduction and distribution are prohibited. Thank you

2 Summary General Features of EPR TM : Recent Trends, Design Basis and Defense in Depth, Diversity, Architecture. Technologies. Human-Machine Interface System. Power Gen Europe Meeting - Milan AREVA proprietary information - 2

3 General Features of EPR EPR originally targets worldwide markets with a design compliant with internationally recognized rules and standards ; it can be adapted where necessary. The I&C system is designed consistent with the plant design based on 4 trains of safeguard systems (4X100 %) : sufficient even with one train failed, one train in maintenance or test and one train incapacitated by the accident. European Utilities Requirements (EURs) are first considered together with the IEC standards : the EURs take into account the lessons learned from the N4 digital I&C and H/MI systems. Adapted designs are available and comply with other standards : in particular USA(IEEE, Regulatory Guides, NUREGs and URDs). Power Gen Europe Meeting - Milan AREVA proprietary information - 3

4 Recent Trends Highlights I&C architecture robustness Implementation of Successive Lines of Defence in Depth with increased independence. Extended consideration for Common Mode Failures (Prevention and Mitigation) Power Gen Europe Meeting - Milan AREVA proprietary information - 4

5 Design Basis and Defence in Depth IAEA EPR C&I Control the main plant parameters within their expected operating range. Detect and mitigate deviations from normal op. range, in order to prevent escalation to incident or accident Main Control Function Limitations, LCO Trip the reactor and starts ESFs up to bring the plant to Controlled State, and subsequently Safe Shutdown State, while maintaining at least 1 barrier for the confinement of radioactivity RT/ESFAS Address the Complex Sequences (incident or accident coincident with multiple failures) and Severe Accidents (B) in which the design basis may be exceeded and keep radioactive releases as low as possible. RRC-Mitigating Systems Power Gen Europe Meeting - Milan AREVA proprietary information - 5

6 Diversity Diversity provides resistance to Common Mode Failures : diverse equipment packages provide backup to each other. Teleperm XS TM and SPPA-T2000 TM (or other off the shelf technology) are diverse from each other: Teleperm XS TM is an AREVA product line, T2000 TM is a SIEMENS product line. Diverse hardware and software (I/O boards, local area networks, CPUs, busses, etc ). Diverse computer-aided design tools. Manufactured in different factories (Teleperm XS TM in Karlsruhe, T2000 TM in Erlangen). Hardwired technology provides diversity with respect to both Teleperm XS TM and T2000 TM when it is required to cope with digital I&C common mode failure. Power Gen Europe Meeting - Milan AREVA proprietary information - 6

7 Functions and Equipment Classes According to EURs EUR Function Class Min Equipment Class F1A F1B F2 NC Functions required in case of an accident to bring the reactor to controlled state Functions required in case of an accident to bring the reactor to safe shutdown state Functions that prevent the risk of radioactive releases Other functions contributing to plant safety (e.g. respect of limiting condition of operation, safety system availability monitoring, protection against internal hazards effects, residual risk reduction, detection and control of radioactivity releases ) Non classified functions E1A E1B E2 NC Power Gen Europe Meeting - Milan AREVA proprietary information - 7

8 Standard EPR I&C Architecture LEVEL 2 UNIT SUPERVISION AND CONTROL QDS SEVERE ACCIDENT CONTROLS AND INDICATIONS SHUT DAS CONTROLS AND INDICATIONS SHUT SICS MCR + RSS (reduced) PS CONTROLS AND INDICATIONS QDS SHUT SAS CONTROLS AND INDICATIONS QDS SHUT PAS CONTROLS AND INDICATIONS SHUT QDS MCR Plant Overview Panel (4 OWP-5 screens) PICS QDS RSS (2 OWP-5 screens+ mini config) TSC 1 OWP 5 screens To TXS I&C SC I&C Engineering Workstations Risk Reduction line Main line GWs Preventive line GWs LEVEL 1 SYSTEM AUTOMATION SA I&C (E2) DAS (E1B) PS (E1A) I SICS I SAS (E1B) RCSL (E1B) PAS (E2) TG I&C (NC) PACS PACS PACS SAS PAS DAS SA I&C RodPilot PACS LEVEL 0 PROCESS INTERFACE Note1 Bus connections are shown in principle and does not reflect the actual physical configuration RT Devices Signal conditioning (and distribution when needed) TELEPERM XS SPPA T2000/S7 Other technology Non computerized Power Gen Europe Meeting - Milan AREVA proprietary information - 8

9 Summary General Features of EPR TM : Recent Trends, Design Basis and Defense in Depth, Diversity, Architecture. Technologies. Human-Machine Interface System. Power Gen Europe Meeting - Milan AREVA proprietary information - 9

10 Technologies I&C systems for EPR as well as for renovation of plants already in operation take advantage of a substantial experience feed-back : Digital I&C in various types of nuclear power plants, Computerized man-machine interface (N4). Modern I&C systems largely based on digital technologies: TELEPERM XS manufactured by AREVA. SPPA T2000 manufactured by SIEMENS. Video displays units used for graphical interfaces and mimics, Communication with external systems (site management, remote monitoring ), Flexible architecture, Integrated engineering and design tools. Hardwired Technology is retained for specific functions. Power Gen Europe Meeting - Milan AREVA proprietary information - 10

11 AREVA Digital Safety I&C TELEPERM XS TM Complies with international standards for class 1E (F1A) application: IEEE, RGs, NUREGs, IEC (specifically IEC60880 and ), European Standards and Rules. Modern microprocessors (AMD K6-2E) provide high computational capabilities. Class 1E network (L2) provides safe data transmission (deterministic). Gateways provide connection to other technologies. Wide range of I/O boards available. Efficient safety-oriented computer-aided design tools: FunBase, SPACE and SIVAT. Permanent self monitoring and diagnostic stations. Power Gen Europe Meeting - Milan AREVA proprietary information - 11

12 Summary General Features of EPR TM : Recent Trends, Design Basis and Defense in Depth, Diversity, Architecture. Technologies. Human-Machine Interface System. Power Gen Europe Meeting - Milan AREVA proprietary information - 12

13 Control Centers Operation from Main Control Room (MCR), as long as it is inhabitable. Remote Shutdown Station (RSS), should MCR become uninhabitable (fire, smoke, etc.). Technical Support Center (TSC) for experts called for support following an accident. The various control stations exhibit homogeneous ergonomics. No fire or other incident can simultaneously impact MCR and RSS. Power Gen Europe Meeting - Milan AREVA proprietary information - 13

14 Main Control Room Operation Area Power Gen Europe Meeting - Milan AREVA proprietary information - 14

15 Main Control Room Safety Information and Control System Power Gen Europe Meeting - Milan AREVA proprietary information - 15

16 Notice Any reproduction, alteration, transmission to any third party or publication in whole or in part of this document and/or its content is prohibited unless AREVA has provided its prior and written consent. This prohibition concerns notably any editorial elements, verbal and figurative marks and images included herein. This document and any information it contains shall not be used for any other purpose than the one for which they were provided. In particular, no patent application and/or registered design may be applied for on the basis of the information contained herein. Power Gen Europe Meeting - Milan AREVA proprietary information - 16

Status of the EUR works, EUR organisation

European Utility Requirements for LWR nuclear power plants EUR seminar 2010, Barcelona, June 1 st 2010 Status of the EUR works, EUR organisation Luc VANHOENACKER, Tractebel Engineering (GDFSUEZ) EUR today: