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Radiographic Testing (Level I& II)
Recommended Training for ASNT
Radiographic Testing Level I
Radiographic Technique Training Course
1.0
Introduction
1.1
Process of Radiography
1.2
Types of electromagnetic radiation source
1.3
Electromagnetic Spectrum
1.4
Penetrating ability or quality of X-ray and Gamma
rays
1.5
Spectrum of X-ray Tube Source
1.6
Spectrum of gamma radioisotope source
1.7
X-ray tube -change of mA or kVp effect on
“quality’ and intensity
2.0
Basic Radio2rapluc Principles
2.1
Geometric exposure principles
2.1.1
Shadow formation and distortion
2.1.2
Shadow enlargement calculations
2.1.3
Shadow sharpness
2.1.4
Geometric unsharpness
2.1.5
Finding discontinuity depth
2.2
Radiographic Screens
2.2.1
Lead intensifying screens
2.2.2
Fluorescent intensifying screens
2.2.3
Intensifying factors
2.2.4
Importance of screen to film contact
2.2.5
Importance of screen cleanliness and care
2.2.6
Techniques for cleaning Screens
2.2.7
Radiographic cassettes
2.2.8
Composition of industrial radiographic film
2.2.9
The “heel effect” with x-ray tubes
3.0
Radiographs
3.1
Foundation of latent image on film
3.2
Inherent unsharpness
3.3
Arithmetic of radiographic exposure
3.3.1
Milliamperage- distance-time relationship
3.3.2
Reciprocity law
3.3.3
Photographic density
3.3.4
X-ray exposure charts —material thickness ,kV and
exposure
3.3.5
Gamma ray exposure chart
3.3.6
Inverse square law considerations
3.3.7
Calculation of exposure time for gamma ray and
x-ray source
3.4
Characteristics H& D Curve
3.5
Film speed and class description
3.6
Selection of film for particular purpose
4.0
Radiographic Image Quality
4.1
Radiographic sensitivity
4.2
Radiographic contrast
4.3
Film contrast
4.4
Subject contrast
4.5
Definition
4.6
Film graininess and screen mottle effects
4.7
Pentameters or Image Quality Indicators
5.0
Film Handling. loading and processing
5.1
Safe light and darkroom practices
5.2
Loading bench and cleanliness
5.3
Opening of film boxes and packets
5.4
Loading of film and sealing cassettes
5.5
Handling techniques for “green films”
5.6
Elements of manual film processing
6.0
Exposure Techniques -Radiography
6.1
Single wall radiography
6.2
Double wall radiography
6.2.1
Viewing two wall simultaneously
6.2.2
Offset double wall exposure single wall viewing
6.2.3
Elliptical techniques
6.3
Panoramic radiography
6.4
Use of multiple films loading
6.5
Specimen configuration
7.0
Fluoroscopic Techniques
7.1
Dark adaptation and eve sensitivity
7.2
Special scattered radiation techniques
7.3
Personnel protection
7.4
Sensitivity
7.5
Limitations
7.6
Direct Screen
7.7
Indirect and remote screen viewing | 
