1 Scope
This Standard defines the characteristics of image quality indicators for non-destructive testing used in radiography and specifies the symbols which allow the identification of these indicators. Notwithstanding that the basic experience was based on radiography of steel, this Standard is intended for general application on all metals. However, for particular materials (for example, aluminium and its alloys) complementary International Standards may be issued.
2 Normative References
The following normative documents contain provisions which, through reference in this text, constitute provisions of this Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this Part are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies.
GB/T 19803-2005 引用如下标准：
* ISO 3 Preferred Numbers - Series of Preferred Numbers1) * ISO 17 Guide to the Use of Preferred umbers and of Series of Preferred Numbers * ISO 2504 Radiography of Welds and Viewing Conditions for Films - Utilization of Recommended Patterns of Image Quality Indicators (IQI)2) * ISO 5576 Industrial Radiology - Non-destructive Testing – Vocabulary3)
