You are here

Technical Safety Review (TSR)

These peer-review services address the specific needs of IAEA Member States at different stages of the development and deployment of a nuclear power programme. They provide a tailored independent evaluation of plant design safety and safety assessment documentation while also providing the requesting IAEA Member State with recommendations for enhancements and improvements to safety.

TSR services encompass the spectrum of activities performed in support of the design, licensing and operation of nuclear installations and streamline the former IAEA peer-review, such as Design Safety Review Service (DSRS), Technical Safety Review of Generic Reactor Safety (GRSR), International Probabilistic Safety Assessment Review Team, (IPSART), Review of Accident Management Programme (RAMP) under a common umbrella. The reviews address aspects of design safety and generic reactor safety, deterministic and probabilistic safety assessment methods, as well as risk-informed decision-making approaches, periodic safety reviews and accident management and make recommendations for improvements to safety in these subject areas. The TSR services are based on the IAEA’s Safety Standards and cover the following subject areas:

  • Design Safety (DS)
  • Generic Reactor Safety (GRS)
  • Safety Requirements (SR)
  • Probabilistic Safety Assessment (PSA)
  • Accident Management (AM)
  • Periodic Safety Review (PSR)

The services aim at assisting plant operators and vendors, design organisations, technical support organisations and regulatory bodies in their technical evaluations, as well as in the development of requirements, and in enhancing specific aspects of nuclear installation safety. The TSR is typically requested for the peer-review of the following topics:

  • Safety of operating and new nuclear power plant designs;
  • Specific chapters of the safety analysis report;
  • Safety requirements developed by regulatory authorities;
  • Safety assessment approaches and frameworks developed by regulatory authorities;
  • Deterministic and probabilistic safety assessments;
  • Probabilistic safety assessment applications and risk-informed decision-making;
  • Safety assessments in support of plant modifications (Design Authority);
  • Accident management programmes, accident analysis, procedures and guidelines;
  • Actions needed to be taken to address emerging safety issues; and
  • Periodic safety reviews.

IAEA Member States can benefit from receiving TSR peer-review services at various  stages of the nuclear life cycle, mainly:

  • Conceptual to detailed design;
  • Various pre-licensing, as well as licensing phases;
  • Nuclear power plant construction;
  • Nuclear power plant operation, including periodic safety reviews and lifetime extension.

The TSR services can also address specific technical or regulatory aspects, such as the review of plans for plant modifications or safety regulation developed for their consistency with IAEA design safety and safety assessment requirements. The different subject areas can be combined as well to address specific Member States’ needs, including a wide-ranging review of safety case documentation.

For each subject area, the TSR service is conducted following a dedicated review guideline defining the scope of the review as agreed with the Requesting Party in support of the transparency and predictability of the service.

Requesting a technical safety review service

Member States can request a TSR service from the IAEA through their Permanent Missions to the Agency. Terms of Reference for the service can be discussed, tailored to the specific Member States’ needs and agreed with the IAEA before making an official request.

The review team is composed of senior international experts and led by IAEA staff. From initiation to completion, the service takes between three and nine months, depending on the requesting Member State’s needs and the extent of selected topics. During the execution of the service, special attention is paid to discussions of and feedback on the preliminary review findings and recommendations between the IAEA team and the Member State. The services are funded by the requesting party or through the IAEA technical cooperation programme. The review concludes with a final report issued by the IAEA to the beneficiary Member State, which includes conclusions and recommendations to enhance and improve safety.


Stay in touch