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IEC 61010-2-091
Edition 2.0 2019-02
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Safety requirements for electrical equipment for measurement, control, and
laboratory use –
Part 2-091: Particular requirements for cabinet X-ray systems
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IEC 61010-2-091
Edition 2.0 2019-02
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Safety requirements for electrical equipment for measurement, control, and
laboratory use –
Part 2-091: Particular requirements for cabinet X-ray systems
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 19.080; 71.040.10 ISBN 978-2-8322-6586-4
– 2 – IEC 61010-2-091:2019 RLV IEC 2019
CONTENTS
FOREWORD . 3
INTRODUCTION . 2
1 Scope and object . 7
2 Normative references . 8
3 Terms and definitions . 8
4 Tests . 9
5 Marking and documentation . 10
6 Protection against electric shock . 13
7 Protection against mechanical HAZARDS . 16
8 Resistance to mechanical stresses . 16
9 Protection against the spread of fire . 16
10 Equipment temperature limits and resistance to heat . 16
11 Protection against HAZARDS from fluids and solid foreign objects . 17
12 Protection against radiation, including laser sources, and against sonic and
ultrasonic pressure . 17
13 Protection against liberated gases and substances, explosion and implosion . 20
14 Components and subassemblies . 20
15 Protection by INTERLOCKS . 21
16 HAZARDS resulting from application . 22
17 RISK assessment . 24
Annexes . 25
Annex L (informative) Index of defined terms . 26
Annex AA (normative) Standard phantom for PARTIALLY PROTECTED EQUIPMENT . 27
Annex BB (informative) Dose limit recommendation for occupational radiation . 28
Bibliography . 29
Figure AA.1 – Phantom for measurement of PARTIALLY PROTECTED EQUIPMENT . 27
Table 101 – Durations of high voltage strength test . 15
Table BB.1 – Dose limits . 28
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SAFETY REQUIREMENTS FOR ELECTRICAL EQUIPMENT
FOR MEASUREMENT, CONTROL, AND LABORATORY USE –
Part 2-091: Particular requirements for cabinet X-ray systems
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in
addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as "IEC Publication(s)"). 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. 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 IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
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Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
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6) All users should ensure that they have the latest edition of this publication.
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
rights. IEC shall not be held responsible for identifying any or all such patent rights.
This redline version of the official IEC Standard allows the user to identify the changes
made to the previous edition. A vertical bar appears in the margin wherever a change has
been made. Additions are in green text, deletions are in strikethrough red text.
– 4 – IEC 61010-2-091:2019 RLV IEC 2019
International Standard IEC 61010-2-091 has been prepared by IEC technical committee 66:
Safety of measuring, control and laboratory equipment.
This second edition cancels and replaces the first edition published in 2012. It constitutes a
technical revision.
This edition includes the following significant changes from the first edition, as well as numerous
other changes:
• The scope of the document has been clarified and limited to equipment up to 500 kV.
• Additional marking requirements for X-ray generating assemblies have been added. (5.1)
• Requirements for high-voltage cables used in the X-ray assembly have been added. (6.5)
• Insulation requirements have been added. (6.7)
• Temperature requirements for beam-limiting devices have been added. (10.3)
• Clarification has been provided on PROTECTED EQUIPMENT and PARTIALLY PROTECTED
EQUIPMENT, and test methods. (12)
• Requirements for INTERLOCKS have been modified, taking into account functional safety
standards. (15)
• Requirements for reasonably foreseeable misuse have been clarified. (16)
• Risk assessment has been made mandatory for specific aspects. (17)
The text of this International Standard is based on the following documents:
FDIS Report on voting
66/684/FDIS 66/686A/RVD
Full information on the voting for the approval of this International Standard can be found in the
report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
This document is intended to be used in conjunction with IEC 61010-1. It was established on the
basis of the third edition (2010) of IEC 61010-1, including its Amendment 1 (2016), hereinafter
referred to as Part 1.
This Part 2-091 supplements or modifies the corresponding clauses in IEC 61010-1 so as to
convert that publication into the IEC standard: Particular requirements for cabinet X-ray
systems.
Clauses of Part 1 that are fully applicable are indicated by the statement "This clause of Part 1
is applicable." Where this Part 2-091 identifies a particular subclause and states "addition",
"modification", "replacement", or "deletion", the text of that particular subclause Part 1 is
adapted accordingly. Where a particular subclause of Part 1 is not mentioned in this Part 2-091,
that subclause applies as far as is reasonable.
In this standard:
a) the following print types are used:
– requirements: in roman type;
– NOTES: in small roman type;
– conformity and tests: in italic type;
– terms used throughout this standard which have been defined in Clause 3: SMALL ROMAN
.
CAPITALS
b) subclauses, figures, and tables which are additional to those in Part 1 are numbered starting
from 101. Additional annexes are lettered starting from AA and additional list items are
lettered from aa).
A list of all parts of the IEC 61010 series, published under the general title Safety requirements
for electrical equipment for measurement, control, and laboratory use, can be found on the IEC
website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The “colour inside” logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct understanding
of its contents. Users should therefore print this publication using a colour printer.
– 6 – IEC 61010-2-091:2019 RLV IEC 2019
INTRODUCTION
IEC 61010-1 specifies the safety requirements that are generally applicable to all equipment
within its scope. For certain types of equipment, the requirements of IEC 61010-1 and its
amendments will be supplemented or modified by the special require
...