Abstract
Over 60 technical experts of the reactor safety research division of the Gesellschaft für Anlagen- und Reaktorsicherheit (GRS) gGmbH are developing and validating reliable methods and computer codes – summarized under the term nuclear simulation chain – for the safety-related assessment for all types of nuclear power plants (NPP) and other nuclear facilities considering the current state of science and technology. This nuclear simulation chain has to be able to simulate and assess all relevant physical processes and phenomena for all operating states and (severe) accidents. In the present contribution, the nuclear simulation chain developed and applied by GRS as well as selected examples of its application are presented. The latter demonstrate impressively the width of its scope and its performance. The GRS codes can be passed on request to other (national as well as international) organizations. This contributes to a worldwide increase of the nuclear safety standards. The code transfer is especially important for developing and emerging countries lacking the financial means and/or the necessary know-how for this purpose. At the end of this contribution, the respective course of action is described.
Kurzfassung
Für die Sicherheitsbewertung von Kernkraftwerken (KKW) sowie sonstigen kerntechnischen Einrichtungen entwickeln und valideren über 60 technische Experten des Bereiches Reaktorsicherheitsforschung der Gesellschaft für Anlagen- und Reaktorsicherheit (GRS) gGmbH zuverlässige Methoden und Computerprogramme, die unter dem Oberbegriff nukleare Rechenkette zusammengefasst sind. Diese muss in der Lage sein, für alle möglichen Betriebszustände sowie Stör- und Unfälle in KKW die physikalisch relevanten Prozesse und Phänomene zu simulieren. In der vorliegenden Veröffentlichung wird die von der GRS entwickelte und angewendete nukleare Rechenkette vorgestellt. Anschließend belegen ausgewählte Beispiele die Breite ihres Anwendungsspektrums sowie deren Leistungsfähigkeit. Die GRS Codes können auf Anfrage an nationale sowie internationale Organisationen weitergegeben werden. Dies trägt dazu bei, das nukleare Sicherheitsniveau weltweit zu erhöhen. Die Codeweitergabe ist speziell wichtig für Entwicklungsländer, die für derartige Aufgaben weder die erforderlichen Mittel noch das hierfür nötige Know-How besitzen. Am Ende des Beitrages finden sich Hinweise bezüglich Beschreibung der Vorgehensweise bei einem Codetransfer.
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