Final answer:
In welding, the term 'class' refers to the designation of welding personnel and categorizes their qualifications based on skills and certifications.
Step-by-step explanation:
In the context of welding, the term 'class' refers to the designation of welding personnel. It is used to categorize and identify the qualifications of welders based on their skills and certifications.
For example, the 'T', 'S', 'FW', 'ASW', and 'WT' designations represent different levels of expertise and specialization in welding. This classification system helps in ensuring that the right personnel are assigned to specific welding tasks based on their training and capabilities.