{"@context":"https://schema.org","@type":"ScholarlyArticle","headline":"Digital Safety Analysis for Small Modular Nuclear Reactors (SMRs)","author":[{"@type":"Person","name":"Ron Claghorn"},{"@type":"Person","name":"Peter Suyderhoud"},{"@type":"Person","name":"Matthew Lund"},{"@type":"Person","name":"Kevin O'Rear"}],"datePublished":"2025","isPartOf":{"@type":"Periodical","name":"INCOSE International Symposium"},"identifier":"https://doi.org/10.1002/iis2.70056","description":"AbstractThe licensing process for any nuclear installation generally requires the review and approval of numerous documents by a regulatory body. Alternate approaches are needed where similar nuclear installations are planned to be built and operated at multiple sites around the world. Such is the case for the deployment of small modular nuclear reactors (SMRs) under development by multiple enterprises in multiple countries.As a use case for this paper, the authors propose an alternative to the Documented Safety Analysis (DSA) required by the United States Department of Energy (DOE) for the licensing of its nuclear installations. The DSA is a DOE construct that requires the review and approval of numerous documents. It includes an in‐depth description of hazards, safe boundaries, and hazard controls.As the alternate approach, the authors assert that a Digital Safety Analysis (DgSA) would be far superior to a legacy DSA for several reasons:\nThe underling database is structured such that it is possible to perform a comprehensive design review and safety analysis by iterating systematically across a hierarchy of linked objects versus a redundant and spotty review by entities of various abilities under unknown resource and schedule constraints.\nThe analysis of a new design can discover elements that are similar to elements in previous designs. The discovery of similarities is made possible by using the same structure for the underlying database for each new DgSA. The “prior learning” from previous designs is then applied automatically to new designs.\nOutputs from the DgSA are from a single source to ensure consistency among various views of the same information. After the DgSA is released, the continued use of a single source implements a configuration management program to ensure consistency between the design basis, the design, the built system, and system procedures.\nThe development of the DgSA is agile in that any change in a linked object triggers an analysis of impacts on other linked objects and updates of linked objects are made accordingly. After the DgSA is released, the continued maintenance of these links and objects automates the “unreviewed safety question” process.","url":"https://innscience.ca/en/community/literature/1521d88e-e440-423b-9bba-da51a32a22d8"}