Page 328 - CITS - Welder - Trade Practical

WELDER - CITS

- The apparatus shall comprise of a radiation source which may be X-ray or gamma-ray source; film holders
and cassettes; intensifying screens such as lead-foil, fluorescent, fluor metallic, or other metallic screens;
filters which shall be used whenever the contrast reductions caused by low energy, scattered radiation, or
the extent of undercut (edge burn-off) occurring on production radiographs are of significant magnitude to
cause difficulty in meeting the quality level or radiographic coverage requirements stipulated by the job order
or contract; masking to improve radiographic quality; IQI’s or penetrometers; shims, separate blocks, or
like sections to facilitate IQI positioning; radiographic location and identification markers; and radiographic
density measurement device. The test method shall meet the radiographic coverage, radiographic film quality,
radiographic quality level, acceptance level, and radiographic density limitations. Procedures for surface
preparation, radiation application and protection, IQI selection and placement, shim utilization, radiograph
identification, and single-wall or double-wall radiographic techniques are addressed.
- This practice provides a uniform procedure for radiographic examination of weldments using industrial
radiographic film.
- Requirements expressed in this practice are intended to control the quality of the radiographic images and are
not intended for controlling acceptability or quality of welds.

Wear protective clothing.

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CITS : CG & M - Welder - Exercise 95