Abstract
Uncertainties in material properties, manufacturing
processes, loading conditions and damage mechanisms
complicate the quantification of structural reliability.
Probabilistic structure mechanical computing codes serve
as tools for assessing leakand break probabilities of
nuclear piping components. Probabilistic fracture
mechanical tools were compared in different benchmark
activities, usually revealing minor, but systematic
discrepancies between results of different codes. In this
joint paper, probabilistic fracture mechanical codes are
compared. Crack initiation, crack growth and the
influence of in-service inspections are analyzed. Example
cases for stress corrosion cracking and fatigue in LWR
conditions are analyzed. The evolution of annual failure
probabilities during simulated operation time is
investigated, in order to identify the reasons for
differences in the results of different codes. The
comparison of the tools is used for further improvements
of the codes applied by the partners.
Original language | English |
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Pages (from-to) | 484-497 |
Journal | Kerntechnik |
Volume | 81 |
Issue number | 5 |
DOIs | |
Publication status | Published - 2016 |
MoE publication type | A1 Journal article-refereed |