Status of Considerations on Safety-Technical Target Specifications for an 'Even Safer' HTR of Small Power

[Automatically extracted and translated] The concept of 'safety' is not precisely defined and is used differently. Formally, a facility is considered safe if the laws, rules, and guidelines valid for the approval process are met. In common parlance, 'safety' implicitly includes the smallness of possible damage or the low frequency of occurrence of major damage. There is a clear aversion to accidents with major damage, even if they are extremely unlikely. Since the Rasmussen study, the frequency and caused damages of accidents have been multiplicatively linked to risk, whose reciprocal is then considered a measure of safety. Besides these quantitatively graspable interpretations, there are qualitative interpretations of the term that cannot be easily translated into safety-technical requirements.