Used to identify pipe and fitting sizes in plumbing. Refers to the inside diameter of the pipe which can vary by thickness of the pipe. The outside is a constant size. For copper pipe the outside diameter is always 1/8 larger than the nominal size. Example: 1/2 nominal is always 5/8.
Competency-based learning or Competency-Based Education and Training is an approach to teaching and learning more often used in learning concrete skills than abstract learning. It differs from other non-related approaches in that the unit of learning is extremely fine grained.
Competency: The combination of observable and measurable knowledge, skills, abilities and personal attributes that contribute to enhanced employee performance and ultimately result in organizational success. To understand competencies, it is important to define the various components of competencies. 1  Knowledge is the cognizance of facts, truths and principles gained from formal training and/or experience. Application and sharing of one's knowledge base is critical to individual and organizational success.