IEC 62342:2007

FOREWORD
INTRODUCTION
1 Scope
  1.1 Management of physical ageing
  1.2 Management of technology ageing (obsolescence)
  1.3 Safety goal of this standard
2 Normative references
3 Terms and definitions
4 Background
5 Requirements for ageing management
  5.1 General
  5.2 Methodology
  5.3 Process
6 Understanding I&C ageing phenomena
  6.1 General
  6.2 Stresses causing ageing
  6.3 Ageing mechanisms and ageing effects
7 Requirements to address ageing effects
  7.1 Ageing effect identification
  7.2 Selection of I&C components for ageing evaluation
      7.2.1 General
      7.2.2 Identification of I&C functions, systems, and
            equipment
      7.2.3 Breakdown of I&C equipment and components
      7.2.4 Failure analysis
      7.2.5 Susceptibility to ageing
  7.3 Evaluating ageing degradation of I&C
  7.4 Ageing stresses
      7.4.1 General
      7.4.2 External stresses influencing ageing
      7.4.3 Internal stresses influencing ageing
      7.4.4 Stress history and insecure conditions
  7.5 Intended function versus qualification
      7.5.1 Equipment specification and qualification
      7.5.2 Impact on the qualification hypothesis
      7.5.3 Applicability of ageing models
  7.6 Surveillance tests and maintenance requirements
      7.6.1 Maintenance and surveillance test processes
      7.6.2 Ageing evidence from operating and maintenance
            research
      7.6.3 Sample tests
  7.7 Support resources
  7.8 Documentation requirements
8 Requirements for ageing control
  8.1 General
  8.2 Definition of ageing control programs
  8.3 Means for I&C ageing management
9 Organization
  9.1 General
  9.2 Organization for ageing management
  9.3 Identifying long-term operating strategies and I&C life
      cycle
  9.4 Organization for the long-term maintenance of I&C
      equipment
  9.5 Quality assurance
  9.6 Reporting
Annex A (informative) Guidance on characterizing I&C ageing
                      phenomena and acquiring data for ageing
                      management of I&C components in nuclear
                      power plants
Annex B (informative) Examples of ageing management practices
                      for selected I&C components in nuclear
                      power plants
Annex C (informative) Examples of testing and monitoring
                      techniques for I&C ageing management
Bibliography

Provides strategies, technical requirements, and recommendations for the management of ageing of nuclear power plant instrumentation and control systems and associated equipment. Also includes annexes on test methods, procedures, and technologies that may be used to verify proper operation of such equipment and aim to prevent ageing degradation from having any adverse impact on the plant safety, efficiency, or reliability. Applies to all types of nuclear power plants and relates primarily to safety.