prEN ISO 19232-3
(Main)Non-destructive testing - Image quality of radiographs - Part 3: Image quality classes (ISO/DIS 13232-3:2024)
Non-destructive testing - Image quality of radiographs - Part 3: Image quality classes (ISO/DIS 13232-3:2024)
This part of ISO 19232 specifies the minimum image quality values to ensure a uniform radiographic quality. It applies to the two types of image quality indicator as detailed in ISO 19232-1 for wire-type IQIs and ISO 19232-2 for step/hole-type IQIs and for the two testing classes A and B as described in ISO 5579. Values are specified for these two testing classes of radiographic techniques as specified in ISO 5579.
Zerstörungsfreie Prüfung - Bildgüte von Durchstrahlungsaufnahmen - Teil 3: Werte für die Bildqualität (ISO/DIS 19232‑3:2024)
Essais non destructifs - Qualité d'image des radiogrammes - Partie 3: Indices de qualité d'image (ISO/DIS 13232-3:2024)
L'ISO 19232-3:2013 spécifie les indices minimaux de qualité d'image afin d'assurer une qualité radiographique uniforme. Elle est applicable aux deux sortes d'indicateurs de qualité d'image respectivement décrites dans l'ISO 19232-1 pour les IQI à fils et dans l'ISO 19232-2 pour les IQI à trous et à gradins ainsi qu'aux deux techniques décrites dans l'ISO 5579. Les indices sont spécifiés pour chacune des deux techniques radiographiques spécifiées dans l'ISO 5579.
Neporušitvene preiskave - Kakovost radiografske slike - 3. del: Stopnje kakovosti slike (ISO/DIS 19232-3:2024)
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Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2024
Neporušitvene preiskave - Kakovost radiografske slike - 3. del: Stopnje kakovosti
slike (ISO/DIS 19232-3:2024)
Non-destructive testing - Image quality of radiographs - Part 3: Image quality values
(ISO/DIS 13232-3:2024)
Zerstörungsfreie Prüfung - Bildgüte von Durchstrahlungsaufnahmen - Teil 3: Werte für
die Bildqualität (ISO/DIS 19232-3:2024)
Essais non destructifs - Qualité d'image des radiogrammes - Partie 3: Indices de qualité
d'image (ISO/DIS 13232-3:2024)
Ta slovenski standard je istoveten z: prEN ISO 19232-3
ICS:
19.100 Neporušitveno preskušanje Non-destructive testing
77.080.01 Železne kovine na splošno Ferrous metals in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
DRAFT
International
Standard
ISO/DIS 19232-3
ISO/TC 135/SC 5
Non-destructive testing — Image
Secretariat: DIN
quality of radiographs —
Voting begins on:
Part 3: 2024-06-18
Image quality values
Voting terminates on:
2024-09-10
ICS: ISO ics
THIS DOCUMENT IS A DRAFT CIRCULATED
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Reference number
ISO/DIS 19232-3:2024(en)
DRAFT
ISO/DIS 19232-3:2024(en)
International
Standard
ISO/DIS 19232-3
ISO/TC 135/SC 5
Non-destructive testing — Image
Secretariat: DIN
quality of radiographs —
Voting begins on:
Part 3:
Image quality values
Voting terminates on:
ICS: ISO ics
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
© ISO 2024
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
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Published in Switzerland Reference number
ISO/DIS 19232-3:2024(en)
ii
ISO/DIS 19232-3:2024(en)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Image quality values . 2
4.1 Single-wall radiography .2
4.2 Double-wall radiography .2
5 Arrangement of IQI . 2
6 Determination of image quality value . 3
7 Reduction of image quality values for gamma radiography . 3
8 IQI values for single-wall technique; IQI on source side; Testing class A . 4
9 IQI values for single-wall technique; IQI on source side; Testing class B . 5
10 IQI values for double-wall technique; Double-image; IQI on source side; Testing class A . 6
11 IQI values for double-wall technique; Double-image; IQI on source side; Testing class B . 7
12 IQI values for double-wall technique; Single or double-image; IQI on detector side;
Testing class A . 8
13 IQI values for double-wall technique; Single or double-image; IQI on detector side;
Testing class B . 9
iii
ISO/DIS 19232-3:2024(en)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out through
ISO technical committees. Each member body interested in a subject for which a technical committee
has been established has the right to be represented on that committee. International organizations,
governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely
with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types
of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
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Any trade name used in this document is information given for the convenience of users and does not
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For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as information about ISO's adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 135, Non-destructive testing, Subcommittee
SC 5, Radiographic testing, in collaboration with the European Committee for Standardization (CEN)
Technical Committee CEN/TC 138, Non-destructive testing, in accordance with the Agreement on technical
cooperation between ISO and CEN (Vienna Agreement).
This third edition cancels and replaces the second edition (ISO 19232-3:2013), which has been technically
revised.
The main changes are as follows:
— title change from: image quality classes” to “image quality values”
— additions to definitions 3.2 and 3.3;
— renamed clause 4 “Image quality values”;
— revision of clause 7 “Acceptable reduction of image quality values for gamma radiography”;
— renamed clauses 8, 9, 10, 11, 12 and 13 for better readability and traceability;
— updated table 1;
— updated titles of all tables for better readability and traceability;
— editorial changes.
A list of all parts in the ISO 19232 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv
DRAFT International Standard ISO/DIS 19232-3:2024(en)
Non-destructive testing — Image quality of radiographs —
Part 3:
Image quality values
1 Scope
This part of ISO 19232 specifies the minimum image quality values to ensure a uniform radiographic
quality. It applies to the two types of image quality indicator as detailed in ISO 19232-1 for wire-type IQIs
and ISO 19232-2 for step/hole-type IQIs and for the two testing classes A and B as described in ISO 5579.
Values are specified for these two testing classes of radiographic techniques as specified in ISO 5579.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes
requirements 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 5579, Non-destructive testing — Radiographic testing of metallic materials using film and X- or gamma rays
— Basic rules
ISO 5580, Non-destructive testing — Industrial radiographic illuminators — Minimum requirements
ISO 17636 (all parts), Non-destructive testing of welds — Radiographic testing
ISO 19232-1, Non-destructive testing — Image quality of radiographs — Part 1: Determination of the image
quality value using wire-type image quality indicators
ISO 19232-2, Non-destructive testing — Image quality of radiographs — Part 2: Determination of the image
quality value using step/hole-type image quality indicators
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 5579 and the following apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
image quality indicator
IQI
device comprising a series of elements of graded dimensions which enable a measure of the image quality to
be obtained
Note 1 to entry: The elements of IQI are commonly wires or steps with holes.
[SOURCE: ISO 19232-1:2013, 3.2]
ISO/DIS 19232-3:2024(en)
3.2
image quality value
IQI value
measure of the image quality required or achieved and is equal to the thinnest element which can be
detected on the radiograph
Note 1 to entry: See Tables 1 to 12 for the related values.
3.3
image quality table
IQI table
table of minimum required image quality values versus the penetrated thickness ranges for a given testing class
4 Image quality values
4.1 Single-wall radiography
The image quality values given in Tables 1 to 4 can be obtained if the following requirements are met:
a) for testing class A using radiographic basic techniques according to ISO 5579;
b) for testing class B using radiographic improved techniques according to ISO 5579.
Image quality values given in Tables 1 to 4 apply in cases where the IQI is placed on the source side. If it is
not possible to place the IQI on the source side, it may be placed on the detector side. Tables 1 to 4 cannot be
applied in this case.
NOTE The use of exceptional techniques (for example, use of an iridium 192 source for thin plate sections) can
result in obtaining different image quality values from those specified (see Clause 7).
4.2 Double-wall radiography
The image quality values given in Tables 5 to 12 can be obtained if the following requirements are met:
a) for the testing class A using radiographic techniques (see ISO 5579);
b) for the testing class B using radiographic techniques (see ISO 5579).
NOTE The use of exceptional techniques can result in obtaining different image quality values from those
specified (see Clause 7).
When using a double-wall radiographic technique, the penetrated thickness, w, can be the sum of penetrated
wall thicknesses, t+t.
Tables 5 to 8 indicate the image quality values corresponding to testing classes A and B for a
...
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