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Evaluation of Seismic Safety for Existing Nuclear Installations

Author: International Atomic Energy Agency

Publisher:

Published: 2009

Total Pages: 66

ISBN-13: 9789201004093

This Safety Guide provides recommendations regarding the criteria and methodologies to be used for seismic safety evaluation of existing nuclear installations, including installations whose purpose and associated radiological risks have changed, installations where longer term operation is under consideration and installations where comprehensive seismic safety reassessments have become necessary. Two methodologies are discussed in detail: deterministic seismic margin assessment (SMA) and seismic probabilistic safety assessment (SPSA).

Evaluation of Seismic Safety for Nuclear Installations

Author: IAEA

Publisher: International Atomic Energy Agency

Published: 2024-02-07

Total Pages: 81

ISBN-13: 9201302231

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This Safety Guide provides recommendations on the seismic safety evaluation of nuclear installations. It addresses all types of new and existing nuclear installations. This Safety Guide presents three assessment methodologies: the deterministic approach, generally known as seismic margin assessment (SMA), seismic probabilistic safety assessment (SPSA), and a combination of SMA and SPSA known as probabilistic safety assessment (PSA) based SMA. This Safety Guide provides specific recommendations on applying a performance-based graded approach to the seismic safety evaluation of nuclear installations other than nuclear power plants. It also covers the relation between seismic safety margins and defense-in-depth (DiD) level 3 and level 4. For new nuclear installations, this Safety Guide provides recommendations to assess adequacy of seismic margin to avoid cliff edge effects considering DiD level 3 and level 4. This publication is intended for use by regulatory bodies, operating organizations, and designers of nuclear installations.

Methodologies for Seismic Safety Evaluation of Existing Nuclear Installations

Author: IAEA

Publisher: International Atomic Energy Agency

Published: 2020-08-26

Total Pages: 109

ISBN-13: 920106022X

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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.

Methodologies for Seismic Safety Evaluation of Existing Nuclear Installations

Author: International Atomic Energy Agency

Publisher:

Published: 2020-10-31

Total Pages: 117

ISBN-13: 9789201072191

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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 application to the safe shutdown of reactors. It includes lessons learned based on the IAEA Action Plan for Strengthening Nuclear Safety, following the Fukushima accident, and updated methodologies for seismic safety evaluation of nuclear installations.

Evaluation of Seismic Safety for Existing Nuclear Installations

Author: IAEA

Publisher:

Published: 2009-06-30

Total Pages: 76

ISBN-13: 9789204013146

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Provides recommendations regarding the methodologies to be used for seismic safety evaluation of existing nuclear installations, including installations whose purpose and radiological risks have changed, installations where longer term operation is under consideration and installations where comprehensive seismic safety reassessments are necessary.

Evaluation of Seismic Safety for Nuclear Installations

Author: International Atomic Energy Agency

Publisher:

Published: 2024-04-29

Total Pages: 0

ISBN-13: 9789201300232

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This Safety Guide provides recommendations on the seismic safety evaluation of nuclear installations. It addresses all types of new and existing nuclear installations. This Safety Guide presents three assessment methodologies: the deterministic approach, generally known as seismic margin assessment (SMA), seismic probabilistic safety assessment (SPSA), and a combination of SMA and SPSA known as 'probabilistic safety assessment (PSA) based SMA. This Safety Guide provides specific recommendations on applying a performance-based graded approach to the seismic safety evaluation of nuclear installations other than nuclear power plants. It also covers the relation between seismic safety margins and defense-in-depth (DiD) level 3 and level 4. For new nuclear installations, this Safety Guide provides recommendations to assess adequacy of seismic margin to avoid cliff edge effects considering DiD level 3 and level 4. This publication is intended for use by regulatory bodies, operating organisations, and designers of nuclear installations.

Seismic Hazards in Site Evaluation for Nuclear Installations

Author: IAEA

Publisher: International Atomic Energy Agency

Published: 2022-01-19

Total Pages: 98

ISBN-13: 9201180217

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This Safety Guide supersedes the 2010 edition of IAEA Safety Standards Series No. SSG-9. It takes account of recently gained knowledge and practices developed by Member States related to seismic hazards, especially lessons from the Fukushima Daiichi accident. It also addresses concomitant events associated with earthquakes, such as tsunamis. The revision provides a clearer separation between the process for assessing the seismic hazards at a specific nuclear installation site and the process for defining the related basis for design and safety assessment of the nuclear installation. Thus, it bridges gaps and avoids undue overlap of the two processes, which correspond to and are performed at different stages of siting of the nuclear installation.

Seismic Hazards in Site Evaluation for Nuclear Installations

Author:

Publisher:

Published: 2010

Total Pages: 0

ISBN-13:

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"This Safety Guide supplements the Safety Requirements publication Safety of Fuel Cycle Facilities, and addresses all the stages in the life cycle of uranium fuel fabrication facilities (UFFFs), with emphasis being placed on design and operation. It describes the actions, conditions and procedures for meeting safety requirements and deals specifically with the handling, processing and storage of low enriched uranium that has a 235U concentration of no more than 6%, derived from natural, highly enriched or reprocessed uranium. The publication is intended to be of use to designers, operating organizations and regulators to ensure the safety of UFFFs."--Provided by publisher.

Seismic Evaluation of Existing Nuclear Power Plants

Author: International Atomic Energy Agency

Publisher: IAEA

Published: 2003-01-01

Total Pages: 60

ISBN-13: 9789201018038

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This report provides guidance for conducting seismic safety evaluation programmes for existing nuclear power plants in a manner consistent with internationally recognized practice. It will be useful for regulatory organizations and other organizations responsible for the implementation of seismic safety evaluation programmes.

Seismic Design for Nuclear Installations

Author: IAEA

Publisher: International Atomic Energy Agency

Published: 2021-12-01

Total Pages: 68

ISBN-13: 9201177216

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This Safety Guide provides recommendations on how to meet the applicable safety requirements in relation to the design aspects of new nuclear installations subjected to seismic hazard. These recommendations focus on the consistent application of methods and procedures, in accordance with best practice, for seismic analysis, design, testing and qualification of structures, systems and components. New recommendations include applications of seismic isolation systems, the seismic margin to be achieved by the design and application of the graded approach. This Safety Guide is intended for use by organizations involved in the seismic design of nuclear installations, in analysis, verification and review, and in the provision of technical support, as well as by regulatory bodies.