STRESS INTENSITY FACTOR (SIF) FOR SPECIAL GEOMETRIES IN PIPING STRESS ANALYISIS

  Stress Intensity Factor (SIF) according to ASME B31J for special geometries not covered in ASME B31.1 and ASME B31.3 codes Piping Design is a critical component of engineering projects and process plants.  In order to get safety pipe systems, the flexibility analysis (stress analysis) is essential, because the pipe stress analysis predicts stresses in … Read more

ROOT CAUSE ANALYSIS AND CORRECTIVE MEASURES OF DISSIMILAR WELD JOINT FAILURE IN A HIGH PRESSURE STEAM PIPE

Problem Definition During operation of a petrochemical plant (Middle East), recurring appearance of cracks in dissimilar metal welding joint of a critic, high-pressure steam pipe have been detected (2010-2014). Cracks appear periodically over the same area, which is the butt weld joining two pieces made of different materials A-335-P91 and SS347H. Weld material is INCONEL625. … Read more