Читать книгу System Reliability Theory - Marvin Rausand - Страница 86

New products and systems are developed to fulfill a set of requirements. These requirements are usually written into a requirement document. The requirements may be based on (i) identified customer needs, (ii) manufacturer's ideas to make the product more competitive, and (iii) requirements in standards, laws, and regulations. The IEV defines the term “requirement” as follows: