The IAEA provides the Safety Assessment Review (SAR) services to assist and advise Member States in achieving and maintaining a high level of safety of nuclear power plants.

This review is organized in services that cover the design at different phases based on the IAEA safety standards.


Safety Assessment Review Services

SAR – An Integrated Review

The objective of SAR is to provide to the requesting Member State a tailored, independent peer review and assessment of the plant design safety and to make recommendations on additional actions/analysis to be performed. SAR can assist countries in the following areas: 
• Safety of operating and new nuclear plant designs;
• Specific sections of the safety analysis report;
• Safety Requirements developed by regulatory authorities;
• Safety assessments, also related to plant modifications;
• Action taken to address emerging safety issues; and
• Countries' Periodic Safety Review programme 
The SAR has been developed in support of stated Member States’ needs.




Upon request of a Member State organization the IAEA provides advisory services to review the design safety and safety assessments of power reactors against the IAEA Safety Standards. The services include and integrate the following complementary services in key technical safety assessment areas:

The objective of this DSARS module is to provide a detailed review of a reactor’s safety documentation for technical robustness, completeness, and comprehensiveness. The scope of this module can be tailored to support Member States’ needs, covering a preliminary safety analysis report, a full safety analysis report, specific chapters of the report, or specific technical topics. This can be done in support of licensing, plant modifications, safety upgrades, life extension, or in light of revised IAEA safety assessment and design safety requirements.
A specific model of DS, GRS, is offered for the review of safety cases (completely or partially developed) of new concepts that are not at the licensing stage yet. This review is focused on checking the status of the documentation (completeness and comprehensiveness).

The objective of this service is to assist the requesting Member State in the process of issuing or revising national safety requirements for the design or safety assessment of nuclear power plants to enhance safety.

The objective of this SAR service is to provide a peer review on the adequacy of the treatment of technical and methodological issues in the Probabilistic Safety Assessment (PSA) with respect to IAEA Safety Standards requirements and the results obtained. The results provide advice on the completeness and accuracy of a PSA related to IAEA requirements. In addition, various PSA applications pursued by both utility and regulatory organizations may be a subject for the review.

The objective of this DSARS module is to provide a peer review on the completeness and adequacy of plant specific Severe Accident Management Guidelines and Emergency Operating Procedures (EOPs) with respect to IAEA Safety Standards requirements.

The objective of this SAR service is to provide a peer review on the Periodic Safety Review programmes according to IAEA Safety Standards, to assure high level of safety throughout the nuclear power plant’s operating lifetime. 

Tailored to meet specific needs

Elements of the SAR services provide the technical bases for tailoring the reviews to the different phases of a reactor project. Also elements from these services can be combined to address specific needs of a requesting Member State Organization or to reviewing the documentation of complete safety cases.

Conduct at various phases of a reactor project

The design and safety assessment reviews may be carried out at the various phases of a reactor project, e.g. at the conceptual design stage, during various pre-licensing phases, for reactors under construction or in operation and for reactors undergoing a periodic safety review or life extension. The services also offer to address specific technical aspects such as plans for plant modifications. The services make use of guidance documentation which provides guidance to the reviewers, includes references to related Agency standards, and refers to good practices.