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  • 2024:10 Computational analysis of high-burnup fuel rod behaviour in PWR large-break LOCA

    SSM perspective Background Quantum Technologies AB (QT) has for many years developed computational models for the thermomechanical behaviour of nuclear fuel in events such as LOCA and RIA. The research projects have been based on evaluations of tests on nuclear fuel in Halden Reactor Project (HRP) and Studsvik Cladding Integrity Project (SCIP). The models developed by QT enable analyses and...

    Content type: Publications
  • 2024:14 Residual stress distributions in nickel-based dissimilar metal pipe welds

    SSM perspective This report concerns a study which has been conducted for the Swedish Radiation Safety Authority, SSM. The conclusions and viewpoints presented in the report are those of the author/authors and do not necessarily coincide with those of the SSM. Abstract It is common for nickel-base materials to be used as filler metals in the welding of dissimilar metal welds. Dissimilar metal...

    Content type: Publications
  • 2025:01 Safety Concept Evaluation with Failure Tolerance Analysis

    SSM perspective Background One of the most important design principles to achieve high safety function dependability is the use of redundancy to be single-fault tolerant. In turn, redundancies become effective by applying additional design principles such as physical and functional separation and diversity. License holders of nuclear power reactors must demonstrate that requirements are met,...

    Content type: Publications
  • 2025:03 APRI-11 – Final Report

    SSM perspective Background The Swedish Radiation Safety Authority together with the Swedish Power companies operating nuclear power reactors in Sweden have since early 1990’s provided financial support for severe accident research at KTH and Chalmers. The research was initiated almost directly after the installation of severe accident management system and strategy, as filtered containment...

    Content type: Publications
  • 2026:06 A Human Reliability Analysis (HRA) Taxonomy for Small Modular Reactors (SMR) – Part 1 of 2: Mapping the SMR landscape

    SSM perspective Background Small Modular Reactors (SMRs) are typically presented as a solution for safe and reliable energy, requiring less time to construct than the traditional large reactors. The inherent safety features, higher levels of automation and increased reliance on passive safety are often held as reasons for fewer operators being needed in the daily operations and for handling...

    Content type: Publications
  • New wide call to strengthen research in nuclear power, waste management, radiation protection and nuclear non-proliferation

    The Swedish Radiation Safety Authority is launching a wide research call covering four areas within radiation safety, including skills supply, nuclear non-proliferation, and the final disposal of nuclear waste. In total, the authority plans to allocate SEK 81 million for research during the period 2026–2031. International institutions are also eligible to apply for funding from one of the...

    Content type: News
  • New Report: Sweden's Self-Evaluation on Meeting Joint Convention Obligations

    Transparency and public participation in the final waste disposal programme, progress of Sweden's nuclear waste management program, and preparations for licensing of new nuclear reactors are some of the areas highlighted in the report presenting Sweden's self-assesment under the Joint Convention.

    Content type: News
  • IAEA IRRS-mission report to Sweden published

    The International Atomic Energy Agency, IAEA, has reviewed Sweden’s framework for nuclear safety and radiation protection, the so-called IRRS review (Integrated Regulatory Review Service). The review is carried out every ten years by a group of international experts led by a team from the IAEA. Sweden’s second full-scope IRRS-review was carried out 14 – 25 November 2022. The report has now...

    Content type: News
  • International radiation safety course in Stockholm gives participants practical knowledge

    With radiation protection experts from all over the world and a focus on practical exercises and case studies, International Radiological Protection School (IRPS) gives professionals from over 20 different countries the opportunity for increased understanding of international radiation protection issues.

    Content type: News