Application of probabilistic fracture mechanics analysis for reassessment of fatigue life of a floating production unit - philosophy and target levels

摘要

This paper deals with the philosophy and principles that should be applied in developing procedures for re-qualifying existing platforms, based on the results of in-service inspections, weld improvement and possible increased inspection program in the life extension period. These principles have been applied to assess the semi-submersible Veslefrikk B production platform that was re-qualified and structurally modified in the summer of 1999.