ROLE AND DEMONSTRATION OF STRUCTURAL INTEGRITY OF LMFBR STRUCTURES WITHIN THE FRAME OF THE SAFETY ASSESSMENT PROCESS

The Structural Integrity DEmonstration Strategy (SIDES) has to satisfy two basic needs, namely to assure that the necessary safety precautio ns are fulfilled and to prove a well based safety and reliability argu ment for passive structures within the frame of the safety assessment process. The elements of this approach are related to five principles. The intention is to systematically compile all these elements for LMF BRs in order to assess the completeness, consistency and adequacy of t he measures provided and to assure that their contribution to the plan t's safety and reliability is adequate. The application of SIDES orien tates itself on the three safety design levels, which could possibly r esult in a reclassification of events initiated by failures in passive structures such as leaks and breaks determined by the ''Lines of Defe nse'' method.