BS EN 1435:1997

Foreword
1 Scope
2 Normative references
3 Definitions
  3.1 Nominal thickness, t
  3.2 Penetrated thickness, w
  3.3 Object-to-film distance, b
  3.4 Source size, d
  3.5 Source-to-film distance (SFD)
  3.6 Source-to-object distance, f
  3.7 Diameter, D[e]
4 Classification of radiographic techniques
5 General
  5.1 Protection against ionizing radiation
  5.2 Surface preparation and stage of manufacture
  5.3 Location of the weld in the radiograph
  5.4 Identification of radiographs
  5.5 Marking
  5.6 Overlap of films
  5.7 Types and positions of image quality indicators
       (IQI)
  5.8 Evaluation of image quality
  5.9 Minimum image quality values
  5.10 Personnel qualification
6 Recommended techniques for making radiographs
  6.1 Test arrangements
  6.2 Choice of tube voltage and radiation source
  6.3 Film systems and screens
  6.4 Alignment of beam
  6.5 Reduction of a scattered radiation
  6.6 Source-to-object distance
  6.7 Maximum area for a single exposure
  6.8 Density of radiograph
  6.9 Processing
  6.10 Film viewing conditions
7 Examination report
Annex A (normative) Recommended number of exposures which
        give an acceptable examination of a circumferential
        butt weld
Annex B (normative) Minimum image quality values
Annex ZA (informative) Clauses of this European Standard
      addressing essential requirements or other provisions
      of EU directives

Defines fundamental techniques of radiography in order to enable the economic obtaining of satisfactory and repeatable results based on generally recognised practice and fundamental subject theory. Applicable to radiographic examination of fusion welded joints in metallic materials.