1TECHNICAL SUPPORT DEPARTMENTTECHNICAL SUPPORT DEPARTMENT

Core Knowledge onInstrumentation and Control

Systems in Nuclear Power Plants

Core Knowledge onInstrumentation and Control

Systems in Nuclear Power Plants

IAEA Nuclear Energy Series

D-NP-T-3.12

IAEA Nuclear Energy Series

D-NP-T-3.12

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ObjectivesObjectives

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.

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Contributors to drafting and review 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

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1. INTRODUCTION 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

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2. OVERVIEW OF I&C SYSTEMS2. 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

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Functional approachFunctional 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

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Physical (component and system) approachPhysical (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

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Physical (component and system) approachPhysical (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

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Lifecycle approach 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

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3. CURRENT CHALLENGES3. 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

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3. CURRENT CHALLENGES3. 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

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The balance of the documentThe 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

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Thank you for your attention!Thank you for your attention!

Any questions?Any questions?