| EPRI 2000 Session: Austenitic Component Inspection | ![]() |
Because cracks associated with dissimilar metal welds are typically observed in the weld metal, adverse effects on the examination by the metallurgical properties of the weldment are critical. Competent dissimilar metal weld examiners typically require additional skills and understanding to address variables such as cracking in austenitic weld, metallurgical interface reflections, weldment geometry, and discrimination of fabrication-induced weld flaws. Recent field experience with examinations of nozzle-to-safe end welds has provided the industry with other "lessons learned" that can be used to assist in the examination of dissimilar metal weld configurations. This paper will discuss recent industry experience with dissimilar metal welds and specifically address "lessons learned.