IEC 62495:2011

IEC 62495 ®
Edition 1.0 2011-04
INTERNATIONAL
STANDARD
Nuclear instrumentation – Portable X-ray fluorescence analysis equipment
utilizing a miniature X-ray tube

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IEC 62495 ®
Edition 1.0 2011-04
INTERNATIONAL
STANDARD
Nuclear instrumentation – Portable X-ray fluorescence analysis equipment
utilizing a miniature X-ray tube

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
R
ICS 27.120 ISBN 978-2-88912-441-1

– 2 – 62495  IEC:2011(E)
CONTENTS
FOREWORD . 4
1 Scope and object . 6
2 Normative references . 6
3 Terms and definitions . 6
4 General requirements . 9
4.1 System description . 9
4.2 Safety considerations . 9
4.3 Other requirements . 9
4.4 Training . 9
5 Portable XRF analysis system requirements . 10
5.1 General . 10
5.2 Classification . 10
5.2.1 General . 10
5.2.2 Closed beam portable XRF analysis system . 10
5.2.3 Open beam portable XRF analysis system . 10
5.3 General safety requirements for all portable XRF analysis systems . 10
5.3.1 Dose equivalent limitation . 10
5.3.2 Radiation safety circuit . 11
5.4 Requirements for a closed beam portable XRF analysis system . 12
5.4.1 General . 12
5.5 Requirements for an open beam portable XRF analysis system . 12
5.5.1 General . 12
5.5.2 Beam interlock or sensor . 13
5.5.3 Guard or sample holder . 13
5.5.4 Secondary push button high voltage safety switch . 13
6 Warning labels and indicators . 13
6.1 General . 13
7 Test requirements . 14
7.1 General . 14
7.2 External electromagnetic noise . 14
7.3 Special tests . 14
7.4 Temperature test . 15
7.4.1 Test equipment . 15
7.4.2 Preparation. 15
7.4.3 Procedure . 15
7.4.4 Evaluation . 15
7.4.5 Ambient temperature tests . 15
7.5 Stray radiation . 16
7.5.1 Equipment . 16
7.5.2 Procedure . 16
7.6 Open beam radiation level . 16
7.6.1 General . 16
7.6.2 Equipment . 16
7.6.3 Measurement procedure . 16
7.6.4 Dosimeter procedure . 17

62495  IEC:2011(E) – 3 –
Annex A (normative) Recommended standard values and ranges of influence
quantities . 18
Bibliography . 19

– 4 – 62495  IEC:2011(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
NUCLEAR INSTRUMENTATION –
PORTABLE X-RAY FLUORESCENCE ANALYSIS
EQUIPMENT UTILIZING A MINIATURE X-RAY TUBE

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
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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.
International Standard IEC 62495 has been prepared by committee 45: Nuclear
instrumentation.
The text of this standard is based on the following documents:
FDIS Report on voting
45/717/FDIS 45/731/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

62495  IEC:2011(E) – 5 –
The committee has decided that the contents of this amendment and the base publication will
remain unchanged until the stability date indicated on the IEC web site under
"http://webstore.iec.ch" in the data related to the specific publication. At this date, the
publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.

– 6 – 62495  IEC:2011(E)
NUCLEAR INSTRUMENTATION –
PORTABLE X-RAY FLUORESCENCE ANALYSIS
EQUIPMENT UTILIZING A MINIATURE X-RAY TUBE

1 Scope and object
This International Standard is applicable to the radiological safety of portable handheld X-ray
fluorescence (XRF) analysis equipment utilizing a miniature X-ray tube as the source of
ionizing radiation for industrial applications.
The following are beyond the scope of this standard:
a) portable XRF analysis equipment utilizing a radioactive source(s);
b) large fixed installation XRF analysis equipment utilizing an X-ray tube;
c) veterinary and medical applications for portable XRF analysis.
The object of this standard is to establish performance specifications for general radiation,
electrical, safety and environmental characteristics of the design and operation, and test
methods in relation to radiological safety for portable XRF analysis equipment utilizing a
miniature X-ray tube. The proposed performance specifications are aimed at minimizing and
avoiding the health risk associated with the use of these devices. Analytical performance
specifications are beyond the scope of this standard.
Portable XRF analyzers utilizing low power, miniature X-ray tubes as sources of ionizing
radiation represent a new class of industrial equipment. The miniature X-ray tube replaces the
small radioisotope sources (e.g., Fe-55, Co-57, Cd-109, Am-241 and Cm-244) that have been
used in portable analyzers for applications such as analysis of lead in paint, alloy
identification, and soil screening for hazardous materials.
2 Normative references
The following referenced documents are indispensable for the application of this document.
For dated references, only the edition
...