EN ISO 11699-2:2011

SLOVENSKI STANDARD
01-april-2012
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SIST EN 584-2:1998
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Non-destructive testing - Industrial radiographic films - Part 2: Control of film processing
by means of reference values (ISO 11699-2:2011)
Zerstörungsfreie Prüfung - Industrielle Filme für die Durchstrahlungsprüfung - Teil 2:
Kontrolle der Filmverarbeitung mit Hilfe von Referenzwerten (ISO 11699-2:2011)
Essais non destructifs - Films utilisés en radiographie industrielle - Partie 2: Contrôle du
traitement des films au moyen de valeurs de référence (ISO 11699-2:2011)
Ta slovenski standard je istoveten z: EN ISO 11699-2:2011
ICS:
19.100 Neporušitveno preskušanje Non-destructive testing
37.040.25 Radiografski filmi Radiographic films
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 11699-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2011
ICS 37.040.25 Supersedes EN 584-2:1996
English Version
Non-destructive testing - Industrial radiographic films - Part 2:
Control of film processing by means of reference values (ISO
11699-2:1998)
Essais non destructifs - Films utilisés en radiographie Zerstörungsfreie Prüfung - Industrielle Filme für die
industrielle - Partie 2: Contrôle du traitement des films au Durchstrahlungsprüfung - Teil 2: Kontrolle der
moyen de valeurs de référence (ISO 11699-2:1998) Filmverarbeitung mit Hilfe von Referenzwerten (ISO 11699-
2:1998)
This European Standard was approved by CEN on 25 September 2011.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same
status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2011 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 11699-2:2011: E
worldwide for CEN national Members.

Contents Page
Foreword .3

Foreword
The text of ISO 11699-2:1998 has been prepared by Technical Committee ISO/TC 135 “Non-destructive
testing” of the International Organization for Standardization (ISO) and has been taken over as EN ISO
11699-2:2011 by Technical Committee CEN/TC 138 “Non-destructive testing” the secretariat of which is held
by AFNOR.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by April 2012, and conflicting national standards shall be withdrawn at the
latest by April 2012.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 584-2:1996.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
Endorsement notice
The text of ISO 11699-2:1998 has been approved by CEN as a EN ISO 11699-2:2011 without any
modification.
INTERNATIONAL ISO
STANDARD 11699-2
First edition
1998-07-01
Non-destructive testing — Industrial
radiographic films —
Part 2:
Control of film processing by means of
reference values
Essais non destructifs — Films utilisés en radiographie industrielle —
Partie 2: Contrôle du traitement des films au moyen de valeurs de référence
A
Reference number
ISO 11699-2:1998(E)
ISO 11699-2:1998(E)
Contents Page
Scope . 1
2 Normative reference . 1
3 Definitions . 1
4 Manufacturing of pre-exposed film strips for control
of the processing system . 1
5 User verification of compliance with a classified film system . 5
6 Interpretation of results . 6
7 Checking intervals . 7
Test report . 7
9 Compliance with film system classifcation . 7
Annex A (normative) Method for processing control . 8
©  ISO 1998
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced
or utilized in any form or by any means, electronic or mechanical, including photocopying and
microfilm, without permission in writing from the publisher.
International Organization for Standardization
Case postale 56 • CH-1211 Genève 20 • Switzerland
Internet iso@iso.ch
Printed in Switzerland
ii
©
ISO ISO 11699-2:1998(E)
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.
Draft International Standards adopted by the technical committees are circulated
to the member bodies for approval before their acceptance as International
Standards by the ISO Council. They are approved in accordance with ISO
procedures requiring at least 75 % approval by the member bodies voting.
International Standard ISO 11699-2 was prepared by Technical Committee
ISO/TC 135, Non-destructive testing, Subcommittee SC 5, Radiation methods.
ISO 11699 consists of the following parts under the general title Non-destructive
testing — Industrial radiographic films:
— Part 1: Classification of film systems for industrial radiography
— Part 2: Control of film processing by means of reference values
Annex A forms an integral part of this part of ISO 11699.
iii
©
ISO 11699-2:1998(E) ISO
Introduction
This part of ISO 11699 describes a procedure for the control of the film
processing systems by users by processing calibrated pre-exposed strips.
The strips are exposed to X-rays and are accompanied by a certificate from the
film strip manufacturer.
The user processes the pre-exposed strips in his system and records the results.
In this part of ISO 11699, clause 4 shows the responsibility of the film strip
manufacturer. The user is responsible for clauses 5 to 8, which show compliance
with the chosen system classification.
iv
©
INTERNATIONAL STANDARD  ISO ISO 11699-2:1998(E)
Non-destructive testing — Industrial radiographic films —
Part 2:
Control of film processing by means of reference values
1 Scope
This part of ISO 11699 describes a procedure for the control of film processing systems.
2 Normative reference
The following standard contains provisions which, through reference in this text, constitute provisions of this part of
ISO 11699. At the time of publication, the edition indicated was valid. All standards are subject to revision, and parties to
agreements based on this part of ISO 11699 are encouraged to investigate the possibility of applying the most recent
edition of the standard indicated below. Members of IEC and ISO maintain registers of currently valid International
Standards.
ISO 11699-1:1998, Non-destructive testing — Industrial radiographic films — Part 1: Classification of film systems for
industrial radiography.
3 Definitions
For the purposes of this part of ISO 11699, the following definitions apply.
3.1  film system: Combination of film and film processing which is carried ou in accorcance with the instructions of film
manufacturer and/or the manufacturer of the processing chemicals [ISO 11699-1].
3.2  film system class: Film system classification according to the limiting values given in table 1 of ISO 11699-1:1998.
Piece of film material on which a step wedge can be exposed.
3.3  film strip:
3.4  pre-exposed film strip: Film strip that is pre-exposed so as to present at least ten different densities after processing.
3.5  net density: 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 15 mm · 100 mm. The pre-exposed film strips contain a step wedge
for density measurements and a blank area for base plus fog density and long term storage time test.
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ISO
ISO 11699-2:1998(E)
4.2 Selection of film strip type
The selected type of film used for the film strips shall have a response to processing which is representative for the set of
films which are classified according to ISO 11699-1.
4.3 Examples of production of pre-exposed film strips
The exposure arrangement is shown in figure 1. The step wedge design is described in figure 2 and table 1. A different
design and material can be used if it provides the same density steps.
Dimensions in millimeters
Key
1 Source
2 3 mm thick copper prefilter
3 Wedge
4 Film
Figure 1 — Example of an exposure arrangement
The successive steps of the film strip shall be exposed in order to obtain density increments of about 0,3 after processing, for
example by a step wedge as described in table 1 and figure 2.
Appropriate precautions against scattered radiation shall be taken. The radiation source is a constant potential X-ray tube
operated at approximately 150 kV. The exposure time is chosen in this way so as to obtain a net density of approximately 2
at one of the first six steps (going from low to high densities) of the step/wedge after processing the pre-exposed film strip in
the conditions of the system classified according to ISO 11699-1.
©
ISO
ISO 11699-2:1998(E)
Figure 2 — Design of step wedge
Table 1 — Height of steps;
material: fine-grained copper
Step Height for 150 KV
No. mm
1 11,7
2 10,8
3 10,0
4 9,3
5 8,8
6 8,2
7 7,7
8 7,3
9 6,9
10 6,5
4.4 Measurement fields and determination of reference values
The steps for determination of reference values shall be as follows (see figure 3):
Step X: the step with a net density close to D = 2.
Step X + 4: the step with a higher density which is four steps from X.
To obtain the reference values, at least five pre-exposed film strips shall be processed in a classified film system. The
resulting densities shall have a maximum variance of DD = – 0,1.
©
ISO
ISO 11699-2:1998(E)
The reference values are obtained as follows:
— Reference speed index S :
r
The average value of the net densities of step X is calculated. The speed index reference is equal to this average
value, rounded to one decimal.
— Reference contrast index C :
r
The average value of the net densities of step X + 4 is calculated. The reference contrast index reference is the
positive difference of the average densities of the steps X and X + 4, rounded to one decimal place.
Dimensions in millimeters
NOTE —  Position and density of steps X and X + 4 on the strip may vary.
Figure 3 — Example of test strip
4.5 Pre-exposed film strip-certificate
Pre-exposed strips shall always be accompanied by a certificate from the manufacturer containing the following data:
— a description of the processing system, specifying the processor, chemistry, processing cycle and the temperature;
— the brand name and type of the pre-exposed film strip;
— the reference values for speed index and contrast index and the step numbers for calculating the corresponding indices.
The following data shall be displayed as shown:
— Processing: manual or automatic;
— developer type and immersion time;
— developing temperature;
— fixer type and immersion time;
— fixing temperature.
— Test strip:
• brand name;
• type.
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ISO
ISO 11699-2:1998(E)
— Speed index:
• reference speed index (S );
r
• reference step (X).
— Contrast index:
• reference contrast index (C );
r
• reference contrast step (X + 4).
4.
...