The document discusses quality management system audits and their purpose. It outlines six common causes of quality problems and different types of audits, including internal, external, system, process, and product audits. It also discusses the depth and scope of audits. The document presents a model of a quality management system as a chain of tasks involving four key elements - the person, item(s), equipment, and information for each task. It provides criteria for evaluating each of these four elements to help ensure products and services meet customer requirements.