To excel as a Union CWI (Certified Welding Inspector), you need in-depth knowledge of welding processes, materials, and safety standards, typically acquired through formal training and certification from organizations such as the American Welding Society (AWS). Familiarity with inspection tools, welding codes, and documentation software is crucial for accurate assessment and reporting. Strong attention to detail, communication, and problem-solving skills are important for ensuring compliance and collaborating with teams. These competencies ensure that welding work meets industry standards and maintains the structural integrity of projects.