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Significance and Use
4.1 This test method provides a relative means for classification of film systems used for industrial radiography. The film system consists of the film and associated processing system (the type of processing and processing chemistry). Section 9 describes specific parameters used for this test method. In general, the classification for hard X-rays, as described in Section 9, can be transferred to other radiation energies and metallic screen types, as well as screens without films. The usage of film system parameters outside the energy ranges specified may result in changes to a film/system performance classification.
4.3 Manufacturers of industrial radiographic film systems and developer chemistry will be the users of this test method. The result is a classification table as shown by the example given in Table 2. Another table also includes speed data for user information. Users of industrial radiographic film systems may also perform the tests and measurements outlined in this test method, provided that the required test equipment is used and the methodology is followed strictly.
4.4 The publication of classes for industrial radiography film systems will enable specifying bodies and contracting parties to agree to particular system classes, which are capable of providing known image qualities. See 8.
4.5 ISO 11699–1 and European standard EN 584-1 describe the same method for classification of film systems for industrial radiography, but its class definitions and number of classes do not align exactly with this test method. International users of these standards should be aware of these differences for their particular applications.
1.1 This test method covers a procedure for determination of the performance of film systems used for industrial radiography. This test method establishes minimum requirements that correspond to system classes.
1.2 This test method is to be used only for direct exposure-type film exposed with lead intensifying screens. The performance of films exposed with fluorescent (light-emitting) intensifying screens cannot be determined accurately by this test method.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
E94 Guide for Radiographic Examination
E1316 Terminology for Nondestructive Examinations
ICS Number Code 19.100 (Non-destructive testing); 77.040.20 (Non-destructive testing of metals)
|Link to Active (This link will always route to the current Active version of the standard.)|
ASTM E1815-08(2013)e1, Standard Test Method for Classification of Film Systems for Industrial Radiography, ASTM International, West Conshohocken, PA, 2013, www.astm.orgBack to Top