Methodologies for Seismic Safety Evaluation of Existing Nuclear Installations  
Published by International Atomic Energy Agency
Publication Date:  Available in all formats
ISBN: 9789201060228
Pages: 0

EBOOK (EPUB)

ISBN: 9789201060228 Price: INR 4042.99
Add to cart Buy Now
Experience shows that an assessment of the seismic capacity of an existing operating facility can be required for a number of reasons, for example identification of potential seismic vulnerabilities based on operating experience events or the periodic safety review programme. This publication covers the seismic safety evaluation programmes to be performed on existing nuclear installations in order to ensure that the required fundamental safety functions are available, with particular attention to the safe shutdown of reactors. It includes lessons learned based on the IAEA Action Plan on Nuclear Safety following the Fukushima Daiichi accident, and updated methodologies for seismic safety evaluation of nuclear installations.
Rating
Description
Experience shows that an assessment of the seismic capacity of an existing operating facility can be required for a number of reasons, for example identification of potential seismic vulnerabilities based on operating experience events or the periodic safety review programme. This publication covers the seismic safety evaluation programmes to be performed on existing nuclear installations in order to ensure that the required fundamental safety functions are available, with particular attention to the safe shutdown of reactors. It includes lessons learned based on the IAEA Action Plan on Nuclear Safety following the Fukushima Daiichi accident, and updated methodologies for seismic safety evaluation of nuclear installations.
Table of contents
  • 1. INTRODUCTION
    • 1.1. Background
    • 1.2. Objective
    • 1.3. Scope
    • 1.4. Structure
  • 2. FORMULATION OF THE PROGRAMME FOR SEISMIC SAFETY EVALUATION OF EXISTING Nuclear INSTALLATIONS
    • 2.1. Perspective
      • 2.1.1. Existing nuclear installations
      • 2.1.2. Reasons to perform seismic safety evaluations
      • 2.1.3. Margins beyond the design basis for new nuclear installations
      • 2.1.4. Margins beyond the design basis for existing nuclear installations
    • 2.2. Selection of methodology
      • 2.2.1. Seismic probabilistic safety assessment
      • 2.2.2. Methodology for seismic margin assessment
      • 2.2.3. Design basis re-constitution
      • 2.2.4. Selection considerations
  • 3. DATA COLLECTION AND INVESTIGATIONs
    • 3.1. General
    • 3.2. Hazard classification of installations and structures, systems and components
    • 3.3. Seismic design basis data
    • 3.4. Data collection and documents
      • 3.4.1. Site data
      • 3.4.2. Assumptions and methods of analysis of existing structures, systems and components
      • 3.4.3. Standards and procedures
      • 3.4.4. Nuclear installation documentation
      • 3.4.5. Data for structures, systems and components
      • 3.4.6. Upgrades and nuclear installation modifications
      • 3.4.7. Results of other safety evaluations
  • 4. ASSESSMENT OF SEISMIC HAZARDS
    • 4.1. Probabilistic seismic hazard analysis
    • 4.2. Review level earthquake
      • 4.2.1. General characteristics of the review level earthquake
    • 4.3. Bases for development of the review level earthquake
      • 4.3.1. Probabilistic seismic hazard analysis
      • 4.3.2. Absence of probabilistic seismic hazard analysis
      • 4.3.3. Regulatory specified
      • 4.3.4. New nuclear power plants
  • 5. SEISMIC SAFETY ASSESSMENT
    • 5.1. Seismic margin assessment
      • 5.1.1. General
      • 5.1.2. Elements of the seismic margin assessment
      • 5.1.3. Enhancements
      • 5.1.4. Documentation
    • 5.2. Seismic probabilistic safety analysis
      • 5.2.1. General
      • 5.2.2. Elements of the seismic probabilistic safety assessment
      • 5.2.3. Special issues
    • 5.3. PSA based seismic safety assessment
      • 5.3.1. System and accident sequence analysis
      • 5.3.2. Fragility analysis
    • 5.4. Off-site seismic induced effects
  • 6. MODERATE AND LOW HAZARD INSTALLATIONS
    • 6.1. Categorization
    • 6.2. Selection of methodology
    • 6.3. Review level earthquake
    • 6.4. Selection of SSCs to be evaluated
    • 6.5. SSC evaluation and walkdown
    • 6.6. Seismic margin assessment
    • 6.7. Seismic instrumentation
  • 7. CONSIDERATIONS FOR UPGRADING
    • 7.1. Structure and substructure upgrades
    • 7.2. Mechanical and electrical distribution systems and mechanical components upgrades
      • 7.2.1. Pressure retaining mechanical distribution systems and components
      • 7.2.2. Other mechanical components
    • 7.3. Electrical and instrumentation and control components
  • 8. MANAGEMENT SYSTEM FOR SEISMIC SAFETY EVALUATION
    • 8.1. General
    • 8.2. Peer review
    • 8.3. Configuration control
    • 8.4. Quality assurance
  • Appendix I EXAMPLES OF SEISMIC DESIGN CATEGORIES AND SITE FOUNDATION CLASSIFICATION
  • Appendix II SUGGESTED DAMPING VALUES AND INELASTIC ENERGY ABSORPTION FACTORS
  • Appendix III BACKGROUND AND TERMINOLOGY FOR THE INELASTIC ENERGY ABSORPTION FACTORS
  • Appendix IV HYBRID METHOD FOR FRAGILITY CALCULATIONS
  • Appendix V TYPICAL WALKDOWN FORMS
  • REFERENCES
  • DEFINITIONS
  • ABBREVIATIONS
  • CONTRIBUTORS TO DRAFTING AND REVIEW
User Reviews
Rating