How many levels does Quality Assurance (QA) have?

Quality Assurance (QA) typically consists of three distinct levels, which are fundamental in ensuring that products and processes meet specific requirements and standards. The first level often involves basic quality checks and measures, which can include inspections and testing. The second level usually encompasses more detailed and systematic reviews, focusing on process evaluation and control. The third level serves as an audit or oversight phase, ensuring compliance with regulatory standards and providing feedback for continuous improvement. This systematic approach allows for effective quality management, ensuring that products are not only manufactured to specification but also that processes are refined for efficiency and reliability. Understanding these three levels is crucial for anyone involved in gas turbine systems or any other engineering fields.