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Evaluation of Seismic Safety for Nuclear Installations

IAEA Safety Standards Series No. SSG-89
Specific Safety Guides

English STI/PUB/2054 ¦ 978-92-0-130023-2

84 pages ¦ € 54.00 ¦ Date published: 2024

https://doi.org/10.61092/iaea.jtrh-4y3z

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Description

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.

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Keywords

IAEA Safety Standards, Evaluation of Seismic Safety, Nuclear Installation, Three Assessment Methodologies, Deterministic Approach, Seismic Margin Assessment, SMA, Seismic Probabilistic Safety Assessment, SPSA, Recommendations, Performance-Based Graded Approach, Nuclear Installations, Nuclear Power Plants, Seismic Safety Margins, Seismic Safety Evaluation, Seismic Safety Margins, Defense-in-Depth, Did, Level 3, Level 4, Cliff Edge Effects, General Concepts, Data Collection, Seismic Hazards, Defence in Depth Concept, Implementation, Seismic Safety Evaluation Results, Potential Seismic Upgrading, Management System, Configuration Management, Seismic Capacity, Structures, Systems and Components, SSCs, Seismic Design Classes, Safety Requirements, Post-Earthquake Actions, Risk Informed Decisions, Design of Modifications, Review

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