API 577 – Welding Inspection and Metallurgy Inspector Practice Exam

A hole type image quality indicator typically contains three holes. This setup is designed to provide a means of assessing the quality of the radiograph by comparing the appearance of the holes in the film with known standards. Each hole allows for the evaluation of different aspects of image quality, such as contrast and resolution.

The presence of three distinct holes helps the inspector determine whether the radiographic technique was effective in capturing clear and well-defined images of the tested material. The holes act as a reference against which various film characteristics can be evaluated, ensuring that any potential defects in the weld or material can be identified accurately.

Understanding the function of the hole type image quality indicator is crucial for welding inspection, as it directly impacts the reliability of the radiographic testing process and aids in quality assurance within welding practices.