ASTM E1817

The use of RQIs is a significant departure from normal practice in industrial radiology because it is not a standard design and is dependent on the application, material, and process and therefore cannot be a simple plaque or wire. The use of an RQI provides documented evidence that radiologic images have the level of quality necessary to reveal those nonconformances for which the parts are being examined by ensuring adequate spatial resolution and contrast sensitivity in the areas of interest.

Where conventional IQIs conforming to Practice E 747 or E 1025 can be used effectively, those practices should be followed.

1. Scope

1.1 This practice covers the radiological examination of unique materials or processes, or both, for which conventionally designed image quality indicators (IQIs), such as those described in Practices E 747 and E 1025, may be inadequate in controlling the quality and repeatability of the radiological image.

1.2 Where appropriate, representative image quality indicators (RQIs) may also represent criteria levels of the acceptance or rejection of images of discontinuities.

1.3 This practice is applicable to most radiological methods of examination.

1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

2. Referenced Documents

E1000 Guide for Radioscopy
E1025 Practice for Design, Manufacture, and Material Grouping Classification of Hole-Type Image Quality Indicators (IQI) Used for Radiology
E1316 Terminology for Nondestructive Examinations
E1441 Guide for Computed Tomography (CT) Imaging
E543 Practice for Evaluating Agencies that Perform Nondestructive Testing
E747 Practice for Design, Manufacture, and Material Grouping Classification of Wire Image Quality Indicators (IQI) Used for Radiology
ANSI/ASNT CP-189 Standard for Qualification and Certification of Nondestructive Testing Personnel
NAS 410 Certification and Qualification of Nondestructive Testing Personnel
SNT-TC-1A Recommended Practice for Personnel Qualification in Nondestructive Testing

Index Terms

radiologic images; representative quality indicator; RQI; Image analysis--radiographic testing; Radiological examination; Representative quality indicators (RQIs); ICS Number Code 19.100; 77.040.20

Citing ASTM Standards

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