American Society of Welding Certified Welding Inspector (CWI)Course Credential Standard: Credentials other than the program/discipline standard that may appropriately qualify one to teach a specific course. Examples might include a licensure, certification, specialty coursework, etc. specific to the single course.Professional Certification: A certificate by an external state, regional, national, or international agency that attests to significant breadth and depth of knowledge within a field of study.