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CSA N290.20:21 Aging management requirements for nuclear power plants
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N290.20:21
March 2021
Title: Aging management requirements for nuclear power plants
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N290.20:21
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ICS 27.120
ISBN 978-1-4883-2995-1
© 2021 Canadian Standards Association
All rights reserved. No part of this publication may be reproduced in any form whatsoever without the prior permission of the publisher.
N290.20:21 Aging management requirements for nuclear power plants
Technical Committee on Reactor Control Systems, Safety Systems, and Instrumentation for Nuclear Power Plants 3
Subcommittee on Aging Management Requirements for Nuclear Power Plants 6
Preface 8
Scope 9
Reference publications 10
Definitions and abbreviations 12
Definitions 12
Abbreviations 16
Systematic approach to aging management 17
AM program 17
General 17
AM program requirements 18
Systematic approach to aging management 20
Scoping, screening, and selection of SSCs 22
General 22
Scoping 22
Screening 25
Selection 27
Data and records 28
SSC assessment and aging review 28
Assessment of a SSC’s aging 28
Assessment of degradation mechanisms and obsolescence 29
Assessment of preventive actions 29
Limits to acceptable degradation 29
Operational factors 29
Review of applicable operating history and experience 29
Review of information sources 30
Evaluation of physical condition of SSCs 30
SSC condition classification 30
AM plans 31
General 31
Addressing attributes 31
Other NPP programs 31
Periodic reviews and improvements 31
General 31
AM program 32
AM plans 32
Program and plans improvement and action resolution 33
Process 33
Performance indicators 33
March 2021 © 2021 Canadian Standards Association 1
N290.20:21 Aging management requirements for nuclear power plants
Obsolescence management 33
General 33
Obsolescence management 34
Aging management during the life cycle of a NPP 34
General 34
Proactive strategy for aging management 34
Transition between life cycle phases 34
Safety analysis 35
Review and update of safety analysis 35
Design phase 36
General 36
Aging management elements 37
Construction phase 38
General 38
Construction 38
Delayed construction 38
Data collection and records 39
Commissioning phase 39
General 39
Aging management activities 39
Data collection and records 39
Operation phase 40
General 40
Long-term operation 40
Extended shutdown 41
Decommissioning phase 42
Documentation and records 42
General 42
Documentation and records management 42
Stakeholder input 43
Records supporting AM attributes 43
Records of AM plan actions 44
Annex A (informative) — Sample methodology for aging evaluation 45 Annex B (normative) — Generic attributes of an effective AM program 47 Annex C (informative) — Sample SSC condition classification 49
Annex D (informative) — Examples of good practices for management of obsolescence 50
Annex E (informative) — Criteria for scoping, screening, and selection of SSCs specific to the transition to decommissioning life cycle phase 51
Annex F (informative) — Examples of support program inputs and outputs associated with the AM program 54
Annex G (informative) — Aging management activities and typical inputs and outputs at all life cycle phases of the NPP 57
Annex H (informative) — Guidance for use of a graded approach to aging management 62
Annex I (informative) — Bibliography 64
March 2021 © 2021 Canadian Standards Association 2
N290.20:21 Aging management requirements for nuclear power plants
This is the first edition of CSA N290.20, Aging management requirements for nuclear power plants.
The CSA N-Series Standards provide an interlinked set of requirements for the management of nuclear facilities and activities. CSA N286 provides overall direction to management to develop and implement sound management practices and controls, while the other CSA Group Nuclear Standards provide technical requirements and guidance that support the management system. This Standard works in harmony with CSA N286 and does not duplicate the generic requirements of CSA N286; however, it might provide more specific direction for those requirements.
This Standard reflects the operating experience of the Canadian nuclear power industry.
Users of this Standard are reminded that the design, manufacture, construction, commissioning, operation, and decommissioning of nuclear facilities in Canada are subject to the provisions of the Nuclear Safety and Control Act and its supporting Regulations.
This Standard was prepared by the Subcommittee on Aging Management Requirements for Nuclear Power Plants, under the jurisdiction of the Technical Committee on Reactor Control Systems, Safety Systems, and Instrumentation for Nuclear Power Plants and the Strategic Steering Committee on Nuclear Standards, and has been formally approved by the Technical Committee.
Notes:
Use of the singular does not exclude the plural (and vice versa) when the sense allows.
Although the intended primary application of this Standard is stated in its Scope, it is important to note that it remains the responsibility of the users of the Standard to judge its suitability for their particular purpose.
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March 2021 © 2021 Canadian Standards Association 8
N290.20:21 Aging management requirements for nuclear power plants
N290.20:21
1 Scope
1.1
This Standard specifies requirements and guidance for the aging management of nuclear power plants (NPPs). Specifically, this Standard addresses the aging management of
structures, systems, and components (SSCs) that are important to safety; and
SSCs that, in the case of failure, would prevent SSCs important to safety from performing their safety function.
Note: Other nuclear facilities may apply this Standard using a graded approach commensurate with risk.
1.2
This Standard addresses the integration of NPP programs to support aging management.
1.3
This Standard applies to the following life cycle phases of the NPP:
design;
construction (including procurement, fabrication and installation, delayed construction, storage, and transportation activities);
commissioning;
operation (including long-term operation and extended shutdown, if applicable); and
decommissioning.
1.4
This Standard addresses two aspects of aging management of SSCs: physical aging and non-physical aging (obsolescence).
1.5
This Standard excludes management of obsolescence that is due to non-equipment-related drivers. Note: For example, changes to current regulations, codes and standards, or loss of staff knowledge due to workforce changes.
1.6
This Standard does not address the broader topic of asset management.
Note: Although asset management is not addressed in this Standard, the concepts and guidance may be adapted and used for establishing strategies to optimize the management of facility assets.
1.7
In this Standard, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the Standard; “should” is used to express a recommendation or that
March 2021 © 2021 Canadian Standards Association 9