EN ISO 16526-2:2020
(Main)Non-destructive testing - Measurement and evaluation of the X-ray tube voltage - Part 2: Constancy check by the thick filter method (ISO 16526-2:2011)
Non-destructive testing - Measurement and evaluation of the X-ray tube voltage - Part 2: Constancy check by the thick filter method (ISO 16526-2:2011)
ISO 16526-2:2011 specifies a constancy check of a X-ray system where mainly the X-ray voltage is checked and also the tube current and the constitution of the target which can be changing due to ageing of the tube.
The thick filter method is based on a measurement of the dose rate behind a defined thick filter using defined distances between the X-ray tube, the filter and the measuring device.
This method is very sensitive to changes of the voltage, but it does not provide an absolute value for the X-ray tube voltage. Therefore, a reference value is needed and, it is recommended to find this reference, for example, within the acceptance test of the system.
The thick filter method is a rather simple technique and may be applied by the operator of an X-ray system to perform regularly a constancy check of the system.
The method can also be applied for consistency checks after changing components which may affect the X-ray tube voltage.
This method can be applied for all types of X-ray systems, i. e. for constant potential, half wave and impulse wave generators with a tube current larger than 1 mA.
Zerstörungsfreie Prüfung - Messung und Bewertung der Röntgenröhrenspannung - Teil 2: Konstanzprüfung mit dem Dickfilter-Verfahren (ISO 16526-2:2011)
Dieser Teil von ISO 16526 legt ein Konstanzprüfverfahren für eine Röntgenanlage fest, wobei die Röntgenspannung besonders empfindlich erfasst wird, aber auch der Röhrenstrom und der Zustand des Röhrentargets, der einem Alterungsprozess unterliegen kann.
Das Dickfilter-Verfahren basiert auf der Messung der Dosisleistung hinter einem Filter definierter Dicke bei definierten Abständen zwischen Röntgenröhre, Filter und Messinstrument.
Dieses Verfahren reagiert sehr empfindlich auf Spannungsänderungen, liefert aber keine Absolutwerte für die Röntgenröhrenspannung. Deshalb wird ein Referenzwert benötigt, und es wird empfohlen, diesen Referenzwert zum Beispiel im Rahmen der Abnahmeprüfung zu ermitteln.
Das Dickfilter Verfahren ist relativ einfach in der Handhabung und kann von einem Röntgenprüfer benutzt werden, um in regelmäßigen Zeitabständen eine Konstanzprüfung des Systems durchzuführen.
Das Verfahren kann auch für Konsistenzkontrollen nach dem Austausch von Komponenten verwendet werden, die die Röntgenröhrenspannung beeinflussen können.
Dieses Verfahren kann für alle Typen von Röntgenanlagen angewandt werden, z. B. für Gleichspannungs¬anlagen, Halbwellenanlagen und Impulsgeneratoren, mit einem Röhrenstrom größer als 1 mA.
Essais non destructifs - Mesurage et évaluation de la tension des tubes radiogènes - Partie 2: Contrôle de la constance selon la méthode du filtre épais (ISO 16526-2:2011)
L'ISO 16526-2:2011 décrit une méthode de contrôle de la constance d'un système radiogène; la méthode de contrôle s'applique principalement à la tension du tube et également au courant du tube, à la constitution de la cible, lesquels peuvent subir des variations avec le vieillissement du tube.
La méthode du filtre épais est basée sur le mesurage de la dose recueillie derrière un filtre épais défini et selon des distances définies entre le tube, le filtre et l'appareil de mesure.
Cette méthode se caractérise par une sensibilité élevée aux variations de tension, mais ne permet pas l'obtention d'une valeur absolue de la tension des tubes radiogènes. Il s'avère donc nécessaire d'utiliser une valeur de référence, à laquelle il est conseillé d'avoir recours dans le cadre des essais pour acceptation du système.
La méthode du filtre épais est relativement simple d'un point de vue technique et peut être pratiquée par l'opérateur d'un système radiogène afin de le soumettre de façon régulière à des contrôles de la constance.
Il est également possible d'appliquer cette méthode pour les contrôles de la constance réalisés après changement de composants qui peuvent influencer la tension du tube.
Cette méthode est applicable à tous les système radiogènes, c'est-à-dire aux générateurs à tension constante, aux générateurs à tension autoredressée et aux générateurs à tension pulsée, caractérisés par un courant de tube supérieur à 1 mA.
Neporušitvene preiskave - Meritve in ugotavljanje električne napetosti na rentgenski cevi - 2. del: Preverjanje konstantnosti z metodo debelega filtra (ISO 16526-2:2011)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-junij-2020
Nadomešča:
SIST EN 12544-2:2001
Neporušitvene preiskave - Meritve in ugotavljanje električne napetosti na
rentgenski cevi - 2. del: Preverjanje konstantnosti z metodo debelega filtra (ISO
16526-2:2011)
Non-destructive testing - Measurement and evaluation of the X-ray tube voltage - Part 2:
Constancy check by the thick filter method (ISO 16526-2:2011)
Zerstörungsfreie Prüfung - Messung und Auswertung der Röntgenröhrenspannung - Teil
2: Konstanzprüfung mit dem Dickfilter-Verfahren (ISO 16526-2:2011)
Essais non destructifs - Mesurage et évaluation de la tension des tubes radiogènes -
Partie 2: Contrôle de la constance selon la méthode du filtre épais (ISO 16526-2:2011)
Ta slovenski standard je istoveten z: EN ISO 16526-2:2020
ICS:
19.100 Neporušitveno preskušanje Non-destructive testing
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 16526-2
EUROPEAN STANDARD
NORME EUROPÉENNE
March 2020
EUROPÄISCHE NORM
ICS 19.100 Supersedes EN 12544-2:2000
English Version
Non-destructive testing - Measurement and evaluation of
the X-ray tube voltage - Part 2: Constancy check by the
thick filter method (ISO 16526-2:2011)
Essais non destructifs - Mesurage et évaluation de la Zerstörungsfreie Prüfung - Messung und Auswertung
tension des tubes radiogènes - Partie 2: Contrôle de la der Röntgenröhrenspannung - Teil 2: Konstanzprüfung
constance selon la méthode du filtre épais (ISO 16526- mit dem Dickfilter-Verfahren (ISO 16526-2:2011)
2:2011)
This European Standard was approved by CEN on 6 January 2020.
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, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
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COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 16526-2:2020 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
The text of ISO 16526-2:2011 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
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 September 2020, and conflicting national standards
shall be withdrawn at the latest by September 2020.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 12544-2:2000.
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, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 16526-2:2011 has been approved by CEN as EN ISO 16526-2:2020 without any
modification.
INTERNATIONAL ISO
STANDARD 16526-2
First edition
2011-12-15
Non-destructive testing — Measurement
and evaluation of the X-ray tube
voltage —
Part 2:
Constancy check by the thick filter
method
Essais non destructifs — Mesurage et évaluation de la tension des
tubes radiogènes —
Partie 2: Contrôle de la constance selon la méthode du filtre épais
Reference number
ISO 16526-2:2011(E)
©
ISO 2011
ISO 16526-2:2011(E)
© ISO 2011
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
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ii © ISO 2011 – All rights reserved
ISO 16526-2:2011(E)
Contents Page
Foreword . iv
Introduction .v
1 Scope . . .1
2 Principle and equipment . 1
3 Measurement . 4
4 Test report .4
Annex A (informative) Example for application .5
ISO 16526-2:2011(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. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 16526-2 was prepared by CEN (as EN 12544-2:2000) and is submitted for approval under a special “fast-
track procedure”, by Technical Committee ISO/TC 135, Non-destructive testing, Subcommittee SC 5,
Radiation methods, in parallel with its approval by the ISO member bodies (see the ISO/IEC Directives,
Part 1, “Fast-track procedure”).
ISO 16526 consists of the following parts, under the general title Non-destructive testing — Measurement and
evaluation of the X-ray tube voltage:
— Part 1: Voltage divider method
— Part 2: Constancy check by the thick filter method
— Part 3: Spectrometric
...
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