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Core Knowledge on Instrumentation and Control Systems in Nuclear Power Plants

Core Knowledge on Instrumentation and Control Systems in Nuclear Power Plants. IAEA Nuclear Energy Series D-NP-T-3.12. Objectives. The objectives of this document are to present a basic overview of I&C systems, a guide to IAEA and related literature on the subject, and

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Core Knowledge on Instrumentation and Control Systems in Nuclear Power Plants

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  1. Core Knowledge onInstrumentation and Control Systems in Nuclear Power Plants IAEA Nuclear Energy Series D-NP-T-3.12

  2. Objectives • The objectives of this document are to • present a basic overview of I&C systems, • a guide to IAEA and related literature on the subject, and • an explanation of the significant role I&C systems have in maintaining and improving safety, plant performance, and economic returns of nuclear power plants. • Numerous IAEA publications have been prepared to address these issues and this document intends to place those technical documents within the context of a global view of NPP I&C systems and their lifecycles. • Moreover, relevant documents related to the I&C area but published by organizations other than the IAEA are listed and referenced in this report to provide a comprehensive guidance for the reader.

  3. Contributors to drafting and review • Eiler, J. Paks NPP, Hungary • Friedl, M. Areva, Germany • Glockler, O. IAEA, Vienna • Graf, A. Areva, Germany • Hoikkala, O. TVO, Finland • Jiang, H. China Nuclear Power Engineering Co., Ltd., China • Johnson, G. IAEA, Vienna • Jung, I. NRC, USA • Kim, H.B. KOPEC, Korea • Lillis, D. Sizewell B NPP, United Kingdom • Lu, D.B. China Nuclear Power Engineering Co., Ltd., China • Ma, X. China Nuclear Power Engineering Co., Ltd., China • Märzendorfer, M. Kernkraftwerk Leibstadt AG, Switzerland • Murray, J.G. Lockhead Martin, USA • Rasmussen, B. Kurz Technical Services, Inc., USA • Salaun, P. EDF, France • Sivokon, V. Joint Stock Company “SNIIP”, Russia • Wood, R. ORNL, USA

  4. 1.INTRODUCTION • 1.1.Motivation • 1.2.Objectives • 1.3.Intended audience • 1.4.Document structure, relation to other documents • 1.4.1. The IAEA document structure/hierarchy • 1.4.2. Organization of the document • 1.4.3. Other relevant information sources

  5. 2. OVERVIEW OF I&C SYSTEMS • Significance of I&C systems • Challenges posed by I&C technology • Functional approach • Physical (component, equipment and system) approach • Life-cycle approach

  6. Functional approach • 2.3.1.Functional view on I&C • 2.3.2.Specifics of NPP I&C stemming from nuclear safety considerations • 2.3.2.1. Safety classification of I&C functions and systems • 2.3.3.I&C design • 2.3.3.1. Main principles of NPP I&C design • 2.3.3.2. Typical design approaches

  7. Physical (component and system) approach • 2.4.1 Process interfaces • Measurement sensors • Transmitters, signal processing electronics • Actuation • 2.4.2 Field communication • Analog • HART • Digital fieldbus (wired) • Digital (wireless) • 2.4.3.Cabling, penetrations, junction boxes, cable trays • 2.4.4.Process monitoring and control systems • Data acquisition systems • Control systems • 2.4.5.High level communication

  8. Physical (component and system) approach • 2.4.6.Human interaction elements • Hard-wired HSI • Computer-based HSI • Hybrid HSI • Main features of computer-based HSIs • Operator support systems and functions • Simulators

  9. Lifecycle approach • Project preparation phase • I&C design phase • Manufacturing phase, construction and integration activities • Qualification and tests in factory • I&C systems on site • Training • Operations and maintenance • I&C modifications • Decommissioning • Disassembling

  10. 3.CURRENT CHALLENGES • Introduction of new technologies • Switching from analog to digital (hybrid systems) • Evolution of the integration level • New platforms (FPGAs, CPEs) • Hybrid control room and human interaction issues • Qualification of new technologies and components • Lack of a common system functional representation language • Safety and security-driven issues • Common cause failure • Communications independence • Cyber security • Configuration management • Licensing-driven issues • Regulatory issues with I&C systems • Harmonization of the licensing process

  11. 3.CURRENT CHALLENGES • Harmonization of standards • Economic-driven issues • On-line monitoring (OLM) • Power uprating • Obsolescence • Impact of I&C systems on plant operational performance • Knowledge capture, skill preservation • I&C support to license renewal / lifetime extension of NPPs • Transitioning to probabilistic-based evaluation

  12. The balance of the document • 4. I&C INFRASTRUCTURE DEVELOPMENT FOR NEW PLANTS AND NEW COUNTRIES • 5. CONCLUSIONS • REFERENCES • GLOSSARY • BIBLIOGRAPHY • LIST OF ABBREVIATIONS • APPENDIX • CONTRIBUTORS TO DRAFTING AND REVIEW

  13. Thank you for your attention! Any questions?

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