IEC TR 60825-14:2022

IEC TR 60825-14 ®
Edition 2.0 2022-03
TECHNICAL
REPORT
colour
inside
Safety of laser products –
Part 14: A user's guide
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
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.

IEC Secretariat Tel.: +41 22 919 02 11
3, rue de Varembé info@iec.ch
CH-1211 Geneva 20 www.iec.ch
Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.

IEC publications search - webstore.iec.ch/advsearchform IEC Products & Services Portal - products.iec.ch
The advanced search enables to find IEC publications by a Discover our powerful search engine and read freely all the
variety of criteria (reference number, text, technical publications previews. With a subscription you will always
committee, …). It also gives information on projects, replaced have access to up to date content tailored to your needs.
and withdrawn publications.
Electropedia - www.electropedia.org
IEC Just Published - webstore.iec.ch/justpublished
The world's leading online dictionary on electrotechnology,
Stay up to date on all new IEC publications. Just Published
containing more than 22 300 terminological entries in English
details all new publications released. Available online and
and French, with equivalent terms in 19 additional languages.
once a month by email.
Also known as the International Electrotechnical Vocabulary

(IEV) online.
IEC Customer Service Centre - webstore.iec.ch/csc

If you wish to give us your feedback on this publication or
need further assistance, please contact the Customer Service
Centre: sales@iec.ch.
IEC TR 60825-14 ®
Edition 2.0 2022-03
TECHNICAL
REPORT
colour
inside
Safety of laser products –
Part 14: A user's guide
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 31.260 ISBN 978-2-8322-1087-7

– 2 – IEC TR 60825-14:2022 © IEC 2022
CONTENTS
FOREWORD . 7
INTRODUCTION . 9
1 Scope . 10
2 Normative references . 10
3 Terms, definitions and symbols. 11
3.1 Terms and definitions . 11
3.2 Symbols . 11
4 Administrative policies . 13
4.1 Safety responsibilities . 13
4.2 Competent Person . 13
4.3 Laser Safety Officer . 13
4.4 Information and training . 14
4.5 Levels of competence . 15
4.5.1 Laser Protection Adviser . 15
4.5.2 Laser Safety Officer . 15
4.5.3 Laser Safety Supervisor . 17
4.5.4 Laser user . 17
4.5.5 Awareness for other persons . 17
4.6 Training requirements . 18
4.7 Accreditation . 18
5 Laser radiation hazards . 19
5.1 Laser products . 19
5.1.1 Laser product classification . 19
5.1.2 Product classes . 19
5.1.3 Embedded lasers . 22
5.1.4 Optical fibres . 23
5.1.5 Laser demonstrations and displays . 23
5.1.6 Consumer laser products . 24
5.2 Exposure to laser radiation . 24
5.2.1 Maximum permissible exposure . 24
5.2.2 Transient visual effects . 24
5.3 Determining the level of laser exposure . 25
5.3.1 The effective exposure . 25
5.3.2 Limiting apertures . 26
5.3.3 Angle of acceptance for the assessment of exposure from extended
sources. 27
5.3.4 Use of binoculars . 29
6 Determining the maximum permissible exposure (MPE) . 29
6.1 General remarks . 29
6.2 Repetitively pulsed or modulated lasers . 36
6.3 Multiple wavelengths . 38
6.4 Extended source MPEs . 38
6.5 Hazard distance and hazard area. 39
6.5.1 Nominal ocular hazard distance . 39
6.5.2 Nominal ocular hazard area . 39
7 Associated hazards . 40

7.1 Additional health hazards . 40
7.2 Hazards arising from the laser . 40
7.2.1 Electricity. 40
7.2.2 Collateral radiation . 40
7.2.3 Other laser radiation . 41
7.2.4 Hazardous substances . 41
7.2.5 Fume . 41
7.2.6 Noise . 41
7.2.7 Mechanical hazards . 41
7.2.8 Fire, explosion and thermal damage . 41
7.2.9 Heat and cold . 42
7.3 Hazards arising from the environment . 42
7.3.1 Temperature and humidity . 42
7.3.2 Mechanical shock and vibration . 42
7.3.3 Atmospheric effects . 42
7.3.4 Electromagnetic and radio-frequency interference . 42
7.3.5 Power supply interruption or fluctuation . 42
7.3.6 Computer software problems . 42
7.3.7 Ergonomic and human-factor considerations . 42
7.4 Control of associated hazards . 43
8 Evaluating risk . 43
8.1 Hazards and risks . 43
8.2 Risk assessment: Stage 1 – Identifying potentially injurious situations . 44
8.2.1 General . 44
8.2.2 The hazards involved . 44
8.2.3 The laser environment . 44
8.2.4 The people at risk . 44
8.3 Risk assessment: Stage 2 – Assessing risk for potentially injurious situations . 45
8.3.1 General . 45
8.3.2 Frequency . 45
8.3.3 Severity . 45
8.3.4 Resultant risk . 45
8.4 Risk assessment: Stage 3 – Selecting control measures . 46
9 Control measures . 46
9.1 General . 46
9.2 Hazard reduction . 47
9.3 Enclosing the hazard . 48
9.3.1 Beam enclosures . 48
9.3.2 Viewing windows . 48
9.3.3 Interlock protection . 48
9.4 Hazard mitigation . 49
9.4.1 Preventing access . 49
9.4.2 Laser controlled areas . 50
9.4.3 Local rules and procedures . 56
9.4.4 Localized risk reduction . 57
9.4.5 Personal protection . 58
9.4.6 Protective clothing . 61
9.5 Equipment servicing . 61
9.5.1 Increased risks during laser equipment servicing . 61

– 4 – IEC TR 60825-14:2022 © IEC 2022
9.5.2 Temporary laser controlled areas. 61
9.5.3 Controls during servicing . 62
9.5.4 Visiting installation and servic
...