ISO 1027-1983 PDF

Full title and description

ISO 1027:1983 — Radiographic image quality indicators for non-destructive testing — Principles and identification. An International Standard that sets out the principles for using image quality indicators (IQIs) to check the quality of radiographs produced by X‑ray or gamma radiography, intended for general application on metallic materials.

Abstract

The standard explains why radiographic image quality must be verified using image quality indicators and provides principles for identification and general application of IQIs. It is a short, principles-level document intended to harmonize how IQIs are recognised and applied across non‑destructive testing (NDT) work on metals; detailed measurement methods and IQI value determination were developed later in the ISO 19232 series.

General information

• Status: Withdrawn / superseded
• Publication date: October 1983 (Edition 1, 1983)
• Publisher: International Organization for Standardization (ISO)
• ICS / categories: 19.100 — Non‑destructive testing
• Edition / version: Edition 1 (1983)
• Number of pages: 3

Scope

ISO 1027:1983 defines the basic principles for radiographic image quality indicators used in industrial X‑ray and gamma radiography of metallic materials. It is intended to provide general guidance on the purpose and identification of IQIs for use across a range of metals; it does not provide the detailed procedures for determining image quality values or specific minimum IQI values, which are covered in later standards.

Key topics and requirements

• Purpose and role of image quality indicators (IQIs) in radiographic NDT.
• Principles for identification and description of common IQI types.
• General recommendations for application of IQIs to check radiograph quality.
• Intended applicability to metallic materials, with note that complementary standards may apply for certain materials (for example aluminium alloys).
• Clarification that detailed determination of image quality values and minimum IQI requirements are provided in successor standards (ISO 19232 series).

Typical use and users

Used as a principles/reference document by NDT engineers, radiographers, welding inspectors, QA/QC managers, inspection bodies and standards committees. Typical applications are quality checks on radiographs of welds, castings, forgings and fabricated components where X‑ray or gamma radiography is employed to detect imperfections.

Related standards

ISO 1027:1983 has been superseded and its subject expanded by the ISO 19232 series (for example ISO 19232‑1 and ISO 19232‑2, 2004 and later revisions) which specify wire‑type and step/hole‑type IQI measurement methods and image quality value determination. Other related documents include ISO 5579 (radiographic testing basic rules), ISO 17636 (radiographic testing of welds) and subsequent parts of ISO 19232 (including later revisions and Part 3 covering minimum IQI values).

Keywords

radiographic image quality, IQI, image quality indicator, non‑destructive testing, radiography, X‑ray, gamma radiography, wire IQI, step/hole IQI, NDT inspection

FAQ

Q: What is this standard?

A: ISO 1027:1983 is an ISO International Standard titled "Radiographic image quality indicators for non‑destructive testing — Principles and identification" that defines the principles and identification of image quality indicators used in radiographic NDT of metals.

Q: What does it cover?

A: It covers the purpose, basic principles and identification of IQIs for use with X‑ray and gamma radiography on metallic materials. It is a short principles-level document and does not give the detailed measurement procedures or minimum IQI values found in later standards.

Q: Who typically uses it?

A: NDT practitioners (radiographers and inspectors), QA/QC and welding inspection personnel, standards developers and inspection authorities who need a common reference for the role and identification of image quality indicators in radiography.

Q: Is it current or superseded?

A: ISO 1027:1983 is withdrawn/superseded. Its content was replaced and expanded by the ISO 19232 series (ISO 19232‑1 and ISO 19232‑2 published in 2004 with later revisions, and further parts addressing minimum values updated subsequently). Users should consult the ISO 19232 family and relevant current radiography standards for up‑to‑date requirements.

Q: Is it part of a series?

A: Conceptually yes — ISO 1027 laid groundwork that was taken forward in the ISO 19232 series (image quality of radiographs: wire and step/hole IQIs and image quality values) and is associated with broader radiographic testing standards such as ISO 5579 and ISO 17636.

Q: What are the key keywords?

A: Radiographic image quality, IQI, image quality indicator, non‑destructive testing (NDT), radiography, X‑ray, gamma, wire IQI, step/hole IQI, image quality value.