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New IAEA Publications: Safety Standards Series No. SSG-21 & 22

27/11/2012 - Trieste, Italy

The IAEA is pleased to announce the publication of:

Volcanic Hazards in Site Evaluation for Nuclear Installations

IAEA Safety Standards Series No. SSG-21

This publication provides comprehensive and updated guidance for site evaluation in relation to volcanic hazards. It includes recommendations on assessing the volcanic hazards at a nuclear installation site, in order to identify and characterize, in a comprehensive manner, all potentially hazardous phenomena that may be associated with future volcanic events. It describes how some of these volcanic phenomena may affect the acceptability of the selected site, resulting in exclusion of a site or determining the corresponding design basis parameters for the installation. This Safety Guide is applicable to both existing and new sites, and a graded approach is recommended to cater for all types of nuclear installations.

Contents: 1. Introduction; 2. Overview of volcanic hazard assessment; 3. General recommendations; 4. Necessary information and investigations (database); 5. Screening of volcanic hazards; 6. Site specific volcanic hazard assessment; 7. Nuclear installations other than nuclear power plants; 8. Monitoring and preparation for response; 9. Management system for volcanic hazard assessment; Annex I: Volcanic hazard scenarios; Annex II: Worldwide sources of information.

STI/PUB/1552; 106 pp.; 2 figures; 2012; ISBN 978-92-0-128110-4; 30.00 Euro

Electronic version can be found:



Use of a Graded Approach in the Application of the Safety Requirements for Research Reactors

IAEA Safety Standards Series No. SSG-22

This publication provides recommendations on the appropriate manner to comply with the Safety Requirements for research reactors, IAEA Safety Standards Series No. NS-R-4, utilizing a graded approach. It is intended for use by operating organizations, regulatory bodies and other organizations involved in the design, construction and operation of research reactors.

Contents: 1. Introduction; 2. Basic elements of the approach to grading; 3. Regulatory supervision; 4. Management and verification of safety; 5. Site evaluation; 6. Design; 7. Operation; 8. Decommissioning; Annex: Example of steps in the graded approach for packaging of radioactive material.

STI/PUB/1547; 74 pp.; 2 figures; 2012, ISBN 978-92-0-127310-9, English, 29.00 Euro

Electronic version can be found: