ISO 10893-7:2019 pdf download

ISO 10893-7:2019 pdf download.Non-destructive testing of steel tubes — Part 7: Digital radiographic testing of the weld seam of welded steel tubes for the detection of imperfections
1 Scope
This document specifies the requirements for digital radiographic X-ray testing by either computed radiography (CR) or radiography with digital detector arrays (DDAs) of the longitudinal or helical weld seams of automatic fusion arc-welded steel tubes for the detection of imperfections. This document specifies acceptance levels and calibration procedures.
It can also be applicable to the testing of circular hollow sections.
NOTE As an alternative, see ISO 10893-6 for film-based radiographic X-ray testing.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 5576, Non-destructive testing — Industrial X-ray and gamma-ray radiology — Vocabulary
ISO 9712, Non-destructive testing — Qualification and certification ofNDTpersonnel
ISO 11484, Steel products — Employer’s qualification system for non-destructive testing (NDT) personnel
ISO 17636-2:2013, Non-destructive testing of welds — Radiographic testing — Part 2: X- and gamma-ray techniques with digital detectors
ISO 19232-1, Non-destructive testing — Image quality of radiographs — Part 1: Determination of the image quality value using wire-type image quality indicators
ISO 19232-2, Non-destructive testing — Image quality of radiographs — Part 2: Determination of the image quality value using step/hole-type image quality indicators
ISO 19232-5, Non-destructive testing — Image quality of radiographs — Part 5: Determination of the image unsharpness and basic spatial resolution value using duplex wire-type image quality indicators
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 5576, ISO 11484 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at http.s://www.iso.org/obp
— IEC Electropedia: available at http://www.electropedia.org/
4 General requirements
4.1 Unless otherwise specified by the product standard or agreed on by the manufacturer and the purchaser, a radiographic inspection shall be carried out on welded tubes after completion of all the primary manufacturing process operations (rolling, heat treating, cold and hot working, sizing and primary straightening, etc.).
4.2 This inspection shall be carried out by trained operators who are certified (e.g. ISO 9712) or qualified (e.g. ISO 11484 or ASNT SNT-TC-1A), and supervised by competent personnel nominated by the manufacturer. In the case of third-party inspection, this shall be agreed on between the manufacturer and the purchaser. The operating authorization issued by the employer shall be according to a written procedure. Nondestructive testing (NDT) operations shall be authorized by a level 3 NDT individual approved by the employer. NOTE The definitions of levels 1, 2 and 3 can be found in the appropriate standards, e.g. ISO 9712 and ISO 11484.