Stress Intensity Factors for HFIR HB-2 Nozzle Corner

In support of probabilistic fracture mechanics (PFM) studies for the High Flux Isotope Reactor (HFIR) Vessel Life Extension Program, a stess analysis of the HB-2 beam tube has been carried out to calculate linear-elastic fracture mechanics (LEFM) stress intensity factors for postulated corner flaws. Employing the ORNOZL mesh generation code and the ABAQUS stress-analysis code, 3-dimensional finite-element models of the HB-2 nozzle with corner flaw radii ranging from 0.5 in. - 1.5 in. were built and analyzed.