EN 61331-2:2002

SLOVENSKI STANDARD
01-september-2002
Protective devices against diagnostic medical X-radiation - Part 2: Protective glass
plates
Protective devices against diagnostic medical X-radiation -- Part 2: Protective glass
plates
Strahlenschutz in der medizinischen Röntgendiagnostik -- Teil 2: Bleiglasscheiben.
Dispositifs de protection radiologique contre les rayonnements X pour diagnostic médical
-- Partie 2: Plaques en verre de protection radiologique
Ta slovenski standard je istoveten z: EN 61331-2:2002
ICS:
11.040.50 Radiografska oprema Radiographic equipment
13.280 Varstvo pred sevanjem Radiation protection
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 61331-2
NORME EUROPÉENNE
EUROPÄISCHE NORM April 2002
ICS 11.040.50
English version
Protective devices against diagnostic medical X-radiation
Part 2: Protective glass plates
(IEC 61331-2:1994)
Dispositifs de protection radiologique Strahlenschutz in der medizinischen
contre les rayonnements X Röntgendiagnostik
pour diagnostic médical Teil 2: Bleiglasscheiben
Partie 2: Plaques en verre de protection (IEC 61331-2:1994)
radiologique
(CEI 61331-2:1994)
This European Standard was approved by CENELEC on 2001-12-01. CENELEC 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 Central Secretariat or to any CENELEC 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 CENELEC member into its own language and
notified to the Central Secretariat has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic,
Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands,
Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2002 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61331-2:2002 E
Foreword
The text of the International Standard IEC 61331-2:1994, prepared by IEC TC 62, Electrical
equipment in medical practice, was submitted to the CENELEC Unique Acceptance
Procedure and was approved by CENELEC as EN 61331-2 on 2001-12-01.
The following dates were fixed:
- latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2002-12-01
- latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2004-12-01
Annexes designated "normative" are part of the body of the standard.
In this standard, annex ZA is normative.
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 61331-2:1994 was approved by CENELEC as a
European Standard without any modification.
__________
- 3 - EN 61331-2:2002
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
This European Standard incorporates by dated or undated reference, provisions from
other publications. These normative references are cited at the appropriate places in
the text and the publications are listed hereafter. For dated references, subsequent
amendments to or revisions of any of these publications apply to this European
Standard only when incorporated in it by amendment or revision. For undated
references the latest edition of the publication referred to applies (including
amendments).
NOTE When an international publication has been modified by common modifications, indicated by (mod), the
relevant EN/HD applies.
Publication Year Title EN/HD Year
IEC 60788 1984 Medical radiology - Terminology HD 501 S1 1988
IEC 61331-1 1994 Protective devices against diagnostic EN 61331-1 2002
medical X-radiation
Part 1: Determination of attenuation
properties of materials
NORME CEI
IEC
INTERNATIONALE
1331-2
INTERNATIONAL
Première édition
STANDARD
First edition
1994-10
Dispositifs de protection radiologique contre
les rayonnements X pour diagnostic médical –
Partie 2:
de protection radiologique
Plaques en verre
Protective devices against diagnostic
medical X-radiation –
Part 2:
Protective glass plates
© CEI 1994 Droits de reproduction réservés — Copyright — all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in
any form or by any means, electronic or mechanical,
utilisée sous quelque forme que ce soit et par aucun pro-
including photocopying and microfilm, without permission
cédé, électronique ou mécanique, y compris la photocopie et
in writing from the publisher.
les microfilms, sans l'accord écrit de l'éditeur.
Genève, Suisse
Bureau Central de la Commission Electrotechnique Internationale 3, rue de Varembé
Commission Electrotechnique Internationale CODE PRIX
International Electrotechnical Commission
PRICE CODE
HOMHCCHR
McHwyHapoAHaH 3netcTpoTe%HH4ecKaa
IEC
Pour prix, voir catalogue en vigueur ^
For price, see current cata logue

1331-2 ©I EC:1994 – 3 –
CONTENTS
Page
FOREWORD 7
Clause
1 Scope and object 9
1.1 Scope 9
1.2 Object
2 Normative references 9
3 Terminology
3.1 Degree of requirements
3.2 Use of terms
3.3 Defined terms
4 Dimensions
4.1 Thickness of PROTECTIVE GLASS PLATES
4.2 Plane dimensions Of PROTECTIVE GLASS PLATES
4.3 Designation of nominal sizes 15
PROTECTIVE GLASS PLATES 15
5 Geometrical accuracy Of
5.1 Squareness
5.2 Flatness
5.3 Parallelism
5.4 Narrow sides
5.5 Edges
6 Optical quality of material
6.1 Definition of zones for determining homogeneity
6.2 Bubbles
6.3 Streaks and other inhomogeneities 17
7 Transmittance
8 ATTENUATION properties
ATTENUATION EQUIVALENT 19
8.1 Minimum value Of
8.2 Determination
8.3 Information
8.4 Verification
9 Marking
10 ACCOMPANYING DOCUMENTS
11 Statement of compliance
1331-2 © IEC:1994 – 5 –
Tables
1 – Thickness of PROTECTIVE GLASS PLATES
Nominal plane dimensions and tolerances 2 – PROTECTIVE GLASS PLATES -
ATTENUATION EQUIVALENT 19
3 – Minimum values of
Annex
A – Index of defined terms
1331-2 ©I EC:1994
INTERNATIONAL ELECTROTECHNICAL COMMISSION
PROTECTIVE DEVICES AGAINST DIAGNOSTIC
MEDICAL X-RADIATION —
Part 2: Protective glass plates
FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization
comprising all national electrotechnical committees (IEC National Committees). The object of the IEC is to
promote international cooperation on all questions concerning standardization in the electrical and
electronic fields. To this end and in addition to other activities, the IEC publishes International Standards.
Their preparation is entrusted to technical committees; any IEC National Committee interested in
the subject dealt with may participate in this preparatory work. International, governmental and
non-governmental organizations liaising with the IEC also participate in this preparation. The IEC
collaborates closely with the International Organization for Standardization (ISO) in accordance with
conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of the IEC on technical matters, prepared by technical committees on
which all the National Committees having a special interest therein are represented, express, as nearly as
possible, an international consensus of opinion on the subjects dealt with.
3) They have the form of recommendations for international use published in the form of standards, technical
repo rts or guides and they are accepted by the National Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
International Standard IEC 1331-2 has been prepared by sub-committee 62B: Diagnostic
imaging equipment, of IEC technical committee 62: Electrical equipment in medical
practice.
The text of this part is based on the following documents:
Report on voting
DIS
62B(CO)70 62B(CO)75
Full information on the voting for the approval of this part can be found in the report on
voting indicated in the above table.
Annexe A forms an integral part of this standard.

- 9 -
1331-2©IEC:1994
PROTECTIVE DEVICES AGAINST DIAGNOSTIC
MEDICAL X-RADIATION –
Part 2: Protective glass plates
1 Scope and object
1.1 Scope
for use
PROTECTIVE GLASS PLATES
rt of International Standard IEC 1331 applies to
This pa
where an optical
or in RADIOLOGICAL INSTALLATIONS
in RADIOLOGICAL EQUIPMENT
TYPE VI, through
SC, or other kind of viewing,
transmission of visual images, TYPE
to be realized.
PROTECTIVE SHIELDING is
materials, e.g.
It does not cover other transparent RADIATION PROTECTION
plastic transparent protection plates (lead acrylate plastics),
-
OPERATORS' eyes (eye spectacles),
- leaded glasses or goggles for protection of the
OPERATOR,
- leaded face shields, which cover the entire face of the
- PATIENT protection, and
eye
- thyroid/neck PROTECTIVE DEVICES.
1.2
Object
This part 2 deals with the requirements on
geometrical accuracy,
-
optical quality of the material,
-
spectral transmittance,
ATTENUATION properties,
- radiation
- marking,
statement of compliance with this standard
-
Of PROTECTIVE GLASS PLATES.
SC, it gives certain nominal sizes,
PROTECTIVE GLASS PLATES TYPE
In addition, for
dimensions and tolerances.
2 Normative references
The following normative documents contain provisions which, through reference in this
text, constitute provisions of this International Standard. At the time of publication, the
rties
editions indicated were valid. All normative documents are subject to revision, and pa
to agreements based on this International Standard are encouraged to investigate the

1331-2 ©I EC:1994 - 11 -
possibility of applying the most recent editions of the normative documents indicated
below. Members of IEC and ISO maintain registers of currently valid International
Standards.
IEC 788: 1984, Medical radiology - Terminology
Protective devices against diagnostic medical X-radiation - Part 1:
IEC 1331-1: 1994,
Determination of attenuation properties of materials
3 Terminology
3.1
Degree of requirements
SMALL
In this part of the International Standard, certain terms (which are not printed in
CAPITALS) have particular meanings, as follows:
indicates a requirement that is mandatory for compliance;
- "shall"
indicates a strong recommendation that is not mandatory for
- "should"
compliance;
- "may" indicates a permitted manner of complying with a requirement or of
avoiding the need to comply;
in
MANUFACTURER
- "specified" is used to indicate definitive information stated by the
ACCOMPANYING DOCUMENTS or in other documentation relating to the
equipment under consideration, usually concerning its intended
purposes, or the parameters or conditions associated with its use or
with testing to determine compliance.
3.2 Use of terms
are used in accordance with their definitions
SMALL CAPITALS
In this part 2, terms printed in
in !EC 788 and in subclause 3.3 of IEC 1331-2 (present publication) (see annex A).
3.3 Defined terms
of an optical quality suitable for trans-
3.3.1 PROTECTIVE GLASS PLATE: PROTECTIVE DEVICE
mitting visual images.
of high optical quality
PROTECTIVE GLASS PLATE TYPE SC: PROTECTIVE GLASS PLATE
3.3.2
DIRECT RADIOSCOPY for observation of the
with specified ATTENUATION properties used in
image in the FLUORESCENT SCREEN.
PROTECTIVE GLASS PLATE of low optical quality
3.3.3 PROTECTIVE GLASS PLATE TYPE VI:
with specified ATTENUATION properties used to provide optically clear and transparent
PROTECTIVE SHIELDING.
4 Dimensions
4.1 Thickness of PROTECTIVE GLASS PLATES
PROTECTIVE GLASS PLATES shall have a nominal thickness according to one of the values
and their tolerances permitted, as given in table 1.

1331-2 © IEC:1994 – 13 –
PROTECTIVE GLASS PLATES
Table 1 – Thickness of
Minimum thickness
Nominal thickness Maximum thickness
mm mm
cm
3,5
0,5 5,0
6,5 5,0
0,65
6,0
0,75 7,5
8,5 7,0
0,85
8,5
1,0
12 10
1,2
12,5
14,5
1,45
18 16
1,8
2,5 25
4.2 Plane dimensions of PROTECTIVE GLASS PLATES
in imperial
IMAGE RECEPTION AREAS
4.2.1 Except for nominal plane dimensions referring to
units (inches), nominal plane dimensions shall correspond to values of full centimetres.
SC nominal plane dimensions should
4.2.2 POI' PROTECTIVE GLASS PLATES TYPE
correspond to one of the values of table 2.
Table 2 – PROTECTIVE GLASS PLATES –
Nominal plane dimensions and tolerances
Tolerances
Tolerances Length
Nominal area Width
mm mm mm
cm x cm mm
24 x 24 235
24 x 30 235
30 x 30 295 0 295 0
395 -2
30 x 40 295 -2
35 x 35 351
40 x 40 395
INTENSIFYING SCREENS
NOTE - The values of table 2 correspond to metric nominal sizes for radiographic
) table of dimensions, which sizes are foreseen to form also the basis for the choice of sizes for
(IEC 658 1)
RADIOGRAPH
...