ASME B 31.3 allows considering Sustained SIF as zero for qualifying static stress analysis.
Could Sustained SIF=Zero be used to qualify code stresses in dynamic COM #1 stress (Sustained + Dynamic case) for maximum response, when the system experiences failure by using Sustained SIF=1 in dynamic (Time history) case only.
Is this allowed as per B 31.3 piping code?
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Sandeep Menon