As seen in the Fracture Analysis of this paper, the failure in the
different sections would be mainly caused by a plastic collapse
mechanism, given that the lines representing the different crack
hypotheses intersect the right part of the FAL (which, in principle,
corresponds to such a mechanism [1]). Therefore, variations in the
considered fracture resistance of the materials would not have
relevant consequences on the results. Furthermore, the fracture
resistance values taken in the assessment correspond to a 1%
failure probability, something that adds an additional security
margin onto this consideration, given that higher Kmat values
would reduce the corresponding Kr value, Lr (and then plastic
collapse) being even more predominant.