Licensing of safety critical software for nuclear reactors


In 1994, the Nuclear Regulator Working Group (NRWG) and the Reactor Safety Working Group (RSWG) of the European Commission Directorate General XI (Environment, Nuclear safety and Civil Protection) launched a task force of experts from nuclear safety institutes with the mandate of “reaching a consensus among its members on software licensing issues having important practical aspects Since several years, a number of countries (Belgium, Canada, China, Finland, Germany, South Korea, Spain, Sweden and the United Kingdom) are actively participating through their regulatory or technical support organizations. The objective of the group is to draft up a document containing the common positions of the participants regarding the licensing of safety-critical software for nuclear reactors. Several versions have already been released and a new version has been published in 2022. It is available on our website