This part of ISO 10407 specifies procedures for the inspection and testing of used drill stem components. For the purpose of this document, drill stem components include drill pipe body, tool joints, rotary shouldered connections, drill collar, HWDP and the ends of components that make up with them. This part of ISO 10407 has been prepared to address the practices and technology commonly used in inspection. The practices established within this document are intended as an inspection and/or testing guide and nothing in this part of ISO 10407 should be interpreted to prohibit the agency or owner from using personal judgement, supplementing the inspection with other techniques, extending existing techniques, or re-inspecting certain lengths. This part of ISO 10407 specifies the qualification of inspection personnel, a description of inspection methods and apparatus calibration and standardization procedures for various inspection methods. The evaluation of imperfections and the marking of inspected drill stem components are included.