本文件旨在为无损检测人员的资格鉴定和认证制定指南，这些人员的具体工作要求了解其执行、见证、监测或评估的无损检测所依据的技术原则。

This text has been prepared to establish guidelines for the qualification and certification of NDT personnel whose specific jobs require knowledge of the technical principles underlying the nondestructive tests they perform, witness, monitor, or evaluate.