N290.0-11

General requirements for safety systems of nuclear power plants

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CSA Standards Update Service

N290.0-11

October 2011

Title: General requirements for safety systems of nuclear power plants

Pagination: 33 pages (viii preliminary and 25 text), each dated October 2011

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CSA Standard

N290.0-11

General requirements for safety systems of nuclear power plants

Published in October 2011 by Canadian Standards Association A not-for-profit private sector organization

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ISBN 978-1-55491-699-3

© Canadian Standards Association — 2011

All rights reserved. No part of this publication may be reproduced in any form whatsoever without the prior permission of the publisher.

© Canadian Standards Association General requirements for safety systems of nuclear power plants

Contents

Technical Committee on Reactor Control Systems, Safety Systems, and Instrumentation of Nuclear Power Plants v

Subcommittee on Emergency Core Cooling Systems of Nuclear Power Plants vii

Preface viii

1. Scope 1

   
   

2. Reference publications 1

   
   

3. Definitions and abbreviations 3

   1. Definitions 3

   2. Abbreviations 6

      
      

4. General safety system requirements 6

   1. General 6

   2. Plant states 6

   3. System operating states 6

      1. General 6

      2. Poised states 6

   4. General design requirements 7

   5. Reliability 7

      1. General 7

      2. Reliability analysis 7

   6. Separation and independence 8

   7. Single failure criteria 8

   8. Fail-safe 9

   9. Safety support systems 9

      1. General 9

      2. Power supply 9

      3. Instrument air supply 10

      4. Ventilation systems 10

   10. Pressure-retaining SSCs 10

   11. Instrumentation, control, and monitoring 10

       1. Selection of instrumentation 10

       2. Instrumentation and control 11

       3. System performance 12

   12. Equipment qualification 13

       1. Environmental qualification 13

       2. Seismic qualification 13

       3. Ageing 13

       4. Event-generated hazards 14

       5. BDBAs 14

   13. Dynamic piping effects 14

   14. Human factors 14

   15. Fire protection 15

   16. System health monitoring 15

   17. Operability 16

   18. Maintainability 16

   19. Maintenance program 17

       
       

       October 2011 iii

       N290.0-11 © Canadian Standards Association

       
       

       
       

       1. General 17

       2. Surveillance 17

       3. Maintenance 17

   20. Testing 18

       1. General 18

       2. Functional testing 18

       3. Post-maintenance testing 19

       4. Commissioning 19

   21. Sharing within a unit 19

       1. Shared SSCs 19

       2. Shared instrumentation 19

   22. Sharing between units 20

   23. Documentation 20

       1. Design documentation 20

       2. SOE documents 21

       3. Operational documents 21

       4. History docket(s) 22

       5. Operational history 22

Annexes

A (informative) — Guidance on plant life maintenance 23

iv October 2011