GB/T 19348.2-2025 Non-destructive testing—Industrial radiographic films—Part 2: Control of film processing by means of reference values (English Version)
GB/T 19348.2-2025 Non-destructive testing-Industrial radiographic films Part 2 : Control of film processing by means of reference values
1 Scope
This document specifies a procedure for the control of film processing systems.
2 Normative references
The following documents contain requirements which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 11699-1 Non-destructive testing-Industrial radiographic film-Part 1: Classification of film systems for industrial radiography
Note: GB/T 19348.1-2014 Non-destructive testing - Industrial radiographic film - Part 1 : Classification of film systems for industrial radiography (ISO 11669-1:2008, MOD)
ISO 18901 Imaging materials - Processed silver gelatin-type black-and-white films-Specifications for stability
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
film system
combination of film and film processing which is carried out in accordance with the instructions of film manufacturer and/or the manufacturer of the processing chemicals
[Source: ISO 11699-1:2008, 3.1]
3.2
film system class
film system (3.1) classification according to the limiting values given in ISO 11699-1:2008, Table 1
3.3
film strip
piece of film material on which different steps of constant optical density are exposed
3.4
pre-exposed film strip
film strip (see 3.3) that is pre-exposed by X-rays so as to present at least ten different optical density steps after processing
3.5
net density
diffuse optical density without base and fog density
4 Manufacturing of pre-exposed film strips for control of the processing system
4.1 Size
The film strips shall have a minimum exposed area of 15mm×100mm. The pre-exposed film strips contain areas of constant optical densities in increasing optical density steps. These steps are used for optical density measurements and a blank area for base plus fog density and life expectancy test.
4.2 Selection of film strip type
Contents
Foreword I
Introduction III
1 Scope
2 Normative references
3 Terms and definitions
4 Manufacturing of pre-exposed film strips for control of the processing system
5 User verification of compliance with a classified film system
6 Interpretation of results
7 Checking intervals
8 Test report
9 Compliance with film system classification
Annex A (Normative) Method for processing control
Standard
GB/T 19348.2-2025 Non-destructive testing—Industrial radiographic films—Part 2: Control of film processing by means of reference values (English Version)
Standard No.
GB/T 19348.2-2025
Status
valid
Language
English
File Format
PDF
Word Count
5500 words
Price(USD)
165.0
Implemented on
2025-9-1
Delivery
via email in 1 business day
Detail of GB/T 19348.2-2025
Standard No.
GB/T 19348.2-2025
English Name
Non-destructive testing—Industrial radiographic films—Part 2: Control of film processing by means of reference values
GB/T 19348.2-2025 Non-destructive testing-Industrial radiographic films Part 2 : Control of film processing by means of reference values
1 Scope
This document specifies a procedure for the control of film processing systems.
2 Normative references
The following documents contain requirements which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 11699-1 Non-destructive testing-Industrial radiographic film-Part 1: Classification of film systems for industrial radiography
Note: GB/T 19348.1-2014 Non-destructive testing - Industrial radiographic film - Part 1 : Classification of film systems for industrial radiography (ISO 11669-1:2008, MOD)
ISO 18901 Imaging materials - Processed silver gelatin-type black-and-white films-Specifications for stability
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
film system
combination of film and film processing which is carried out in accordance with the instructions of film manufacturer and/or the manufacturer of the processing chemicals
[Source: ISO 11699-1:2008, 3.1]
3.2
film system class
film system (3.1) classification according to the limiting values given in ISO 11699-1:2008, Table 1
3.3
film strip
piece of film material on which different steps of constant optical density are exposed
3.4
pre-exposed film strip
film strip (see 3.3) that is pre-exposed by X-rays so as to present at least ten different optical density steps after processing
3.5
net density
diffuse optical density without base and fog density
4 Manufacturing of pre-exposed film strips for control of the processing system
4.1 Size
The film strips shall have a minimum exposed area of 15mm×100mm. The pre-exposed film strips contain areas of constant optical densities in increasing optical density steps. These steps are used for optical density measurements and a blank area for base plus fog density and life expectancy test.
4.2 Selection of film strip type
Contents of GB/T 19348.2-2025
Contents
Foreword I
Introduction III
1 Scope
2 Normative references
3 Terms and definitions
4 Manufacturing of pre-exposed film strips for control of the processing system
5 User verification of compliance with a classified film system
6 Interpretation of results
7 Checking intervals
8 Test report
9 Compliance with film system classification
Annex A (Normative) Method for processing control
