EN IEC 60825-4:2024

Safety of laser products - Part 4: Laser guards

IEC 60825-4:2022 is available as IEC 60825-4:2022 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition. IEC 60825-4:2022 deals with basic issues concerning laser guards, including human access, interlocking and labelling, and gives general guidance on the design of protective housings and enclosures for high-power lasers. Laser guards may also comply with standards for laser protective eyewear, but such compliance is not necessarily sufficient to satisfy the requirements of this document. This part of IEC 60825 specifies the requirements for laser guards, permanent and temporary (for example for service), that enclose the process zone of a laser processing machine, and specifications for proprietary laser guards. This document applies to all component parts of a guard including clear (visibly transmitting) screens and viewing windows, panels, laser curtains and walls. In addition, this document indicates - how to assess and specify the protective properties of a laser guard, and - how to select a laser guard.

Sicherheit von Lasereinrichtungen - Teil 4: Laserschutzwände

Sécurité des appareils à laser - Partie 4: Protecteurs pour lasers

IEC 60825-4:2022 est disponible sous forme de IEC 60825-4:2022 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente. L’IEC 60825-4:2022 traite de questions fondamentales concernant les protecteurs pour laser, y compris l’accès humain, les dispositifs d'interverrouillage et l’étiquetage, et fournit des recommandations générales relatives à la conception de capots et d’enceintes de protection pour les lasers de forte puissance. Les protecteurs pour laser peuvent également être conformes aux normes pour les protecteurs oculaires contre le rayonnement laser, mais une telle conformité n’est pas nécessairement suffisante pour satisfaire aux exigences du présent document. La présente partie de l’IEC 60825 spécifie les exigences relatives aux protecteurs pour laser, permanents et temporaires (par exemple, pour l’entretien), qui protègent la zone de traitement d’une machine à laser, ainsi que les spécifications pour les protecteurs d'origine pour laser. Le présent document s’applique à tous les composants d’un protecteur, y compris les écrans clairs (visiblement transmetteurs) et les fenêtres d’observation, les panneaux, les rideaux pour laser et les parois. De plus, le présent document indique - comment évaluer et spécifier les propriétés de protection d’un protecteur pour laser, et - comment sélectionner un protecteur pour laser.

Varnost laserskih izdelkov - 4. del: Zaščitna oprema za laserje

General Information

• Status: Published
• Publication Date: 12-Dec-2024
• ICS: 31.260 - Optoelectronics. Laser equipment
• Technical Committee: CLC/TC 76 - Optical radiation safety and laser equipment
• Drafting Committee: IEC/TC 76 - IEC_TC_76
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 13-Dec-2024
• Due Date: 13-Dec-2024
• Completion Date: 13-Dec-2024
• Directive: 2006/42/EC - Directive 2006/42/EC of the European Parliament and of the Council of 17 May 2006 on machinery, and amending Directive 95/16/EC (recast)
• Directive: 2014/35/EU - Directive 2014/35/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of electrical equipment designed for use within certain voltage limits
• Directive: 2014/53/EU - Directive 2014/53/EU of The European Parliament and of the Council of 16 April 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of radio equipment and repealing Directive 1999/5/EC
• Mandate: M/396 - Mandate to CEN and Cenelec for standardisation in the field of machinery
• Mandate: M/511 - Mandate to CEN, CENELEC and ETSI relating to harmonised standards in the field of the Low Voltage Directive
• Ref Project: SIST EN 60825-4:2025 - Safety of laser products - Part 4: Laser guards

Relations

• Replaces: EN 60825-4:2006 - Safety of laser products - Part 4: Laser guards
• Effective Date: 22-Jan-2023
• Replaces: EN 60825-4:2006/A1:2008 - Safety of laser products - Part 4: Laser guards
• Effective Date: 19-Jul-2016
• Replaces: EN 60825-4:2006/A2:2011 - Safety of laser products - Part 4: Laser guards
• Effective Date: 19-Jul-2016

Standards Content (Sample)

SLOVENSKI STANDARD
01-marec-2025
Nadomešča:
SIST EN 60825-4:2008
Varnost laserskih izdelkov - 4. del: Zaščitna oprema za laserje
Safety of laser products - Part 4: Laser guards
Sicherheit von Lasereinrichtungen - Teil 4: Laserschutzwände
Sécurité des appareils à laser - Partie 4: Protecteurs pour lasers
Ta slovenski standard je istoveten z: EN IEC 60825-4:2024
ICS:
31.260 Optoelektronika, laserska Optoelectronics. Laser
oprema equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 60825-4
NORME EUROPÉENNE
EUROPÄISCHE NORM December 2024
ICS 31.260 Supersedes EN 60825-4:2006; EN 60825-
4:2006/A1:2008; EN 60825-4:2006/A2:2011
English Version
Safety of laser products - Part 4: Laser guards
(IEC 60825-4:2022)
Sécurité des appareils à laser - Partie 4: Protecteurs pour Sicherheit von Lasereinrichtungen - Teil 4:
lasers Laserschutzwände
(IEC 60825-4:2022) (IEC 60825-4:2022)
This European Standard was approved by CENELEC on 2022-08-26. 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 CEN-CENELEC
Management Centre 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 CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2024 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 60825-4:2024 E

European foreword
The text of document 76/704/FDIS, future edition 3 of IEC 60825-4, prepared by TC 76 "Optical
radiation safety and laser equipment" was submitted to the IEC-CENELEC parallel vote and approved
by CENELEC as EN IEC 60825-4:2024.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2025-12-31
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2027-12-31
document have to be withdrawn
This document supersedes EN 60825-4:2006 and all of its amendments and corrigenda (if any).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
This document has been prepared under a standardization request addressed to CENELEC by the
European Commission. The Standing Committee of the EFTA States subsequently approves these
requests for its Member States.
For the relationship with EU Legislation, see informative Annex ZZ, which is an integral part of this
document.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 60825-4:2022 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standard indicated:
IEC 60204-1 NOTE Approved as EN 60204-1
IEC 61310-3 NOTE Approved as EN 61310-3
IEC 61496-2 NOTE Approved as EN IEC 61496-2
ISO/TR 7250-2 NOTE Approved as CEN ISO/TR 7250-2
ISO 10218-1 NOTE Approved as EN ISO 10218-1
ISO 14120 NOTE Approved as EN ISO 14120
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
NOTE 1 Where an International Publication has been modified by common modifications, indicated by (mod),
the relevant EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is
available here: www.cencenelec.eu.
EN/HD
Publication Year Title Year
IEC 60825-1 2014 Safety of laser products – Part 1: Equipment EN 60825-1 2014
classification and requirements
IEC 61508 series Functional safety of EN 61508-1:2010 2010
electrical/electronic/programmable electronic
EN 61508-2:2010 2010
safety-related systems
EN 61508-3:2010 2010
EN 61508-4:2010 2010
EN 61508-5:2010 2010
EN 61508-6:2010 2010
EN 61508-7:2010 2010
ISO 11553-1 - Safety of machinery – Laser processing EN ISO 11553-1:2020 2020
machines – Safety requirements

+ A11 2020
ISO 12100 - Safety of machinery - General principles for EN ISO 12100 2010
design - Risk assessment and risk reduction
ISO 13849-1 - Safety of machinery – Safety-related parts of EN ISO 13849-1 2023
control systems – Part 1: General principles
for design
Annex ZZ
(informative)
Relationship between this European Standard and the essential
requirements of Directive 2006/42/EC aimed to be covered
This European Standard has been prepared under a Commission’s standardization request “M/396
Mandate to CEN and CENELEC for Standardisation in the field of machinery" to provide one voluntary
means of conforming to essential requirements of Directive 2006/42/EC of the European Parliament
and of the Council of 17 May 2006 on machinery, and amending Directive 95/16/EC (recast)
Once this standard is cited in the Official Journal of the European Union under that Directive,
compliance with the normative clauses of this standard given in Table ZZ.1 confers, within the limits of
the scope of this standard, a presumption of conformity with the corresponding essential requirements
of that Directive, and associated EFTA regulations.
Table ZZ.1 — Correspondence between this European Standard and Annex I of Directive
2006/42/EC
The relevant Essential Clause(s)/sub-clause(s) Remarks/Notes
Requirements of Directive of this EN
2006/42/EC
1.5.12 Clause 4.1 General design requirements
1.5.12 Clause 4.2 General performance requirements
1.5.12 Clause 4.3 Validation
1.5.12 Clause 4.4 User information
1.5.12 Clause 5.1 Special design requirements
1.5.12 Clause 5.2 Special performance requirements
1.5.12 Clause 5.3 Specification requirements
1.5.12 Clause 5.4 Testing and evaluation requirements
1.5.12 Clause 5.5 Labelling requirements
1.5.12 Clause 5.6 Additional user documentation
1.5.12 Appendix D (normative) Test specifications
WARNING 1 — Presumption of conformity stays valid only as long as a reference to this European
Standard is maintained in the list published in the Official Journal of the European Union. Users of this
standard should consult frequently the latest list published in the Official Journal of the European
Union.
WARNING 2 — Other Union legislation may be applicable to the product(s) falling within the scope of
this standard.
IEC 60825-4 ®
Edition 3.0 2022-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Safety of laser products –
Part 4: Laser guards
Sécurité des appareils à laser –

Partie 4: Protecteurs pour laser

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 31.260 ISBN 978-2-8322-3985-8

– 2 – IEC 60825-4:2022 © IEC 2022
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 8
4 Requirements for laser guards . 11
4.1 Requirement . 11
4.2 Design requirements . 12
4.3 Performance requirements . 12
4.4 Validation . 12
4.5 User information . 13
5 Proprietary laser guards . 13
5.1 General . 13
5.2 Design requirements . 13
5.3 Performance requirements . 13
5.4 Specification requirements . 14
5.5 Test requirements . 14
5.6 Labelling requirements . 14
5.7 User information . 15
Annex A (informative) General guidance on the design and selection of laser guards . 16
A.1 Design of laser guards . 16
A.2 Selection of laser guards . 16
Annex B (informative) Assessment of foreseeable exposure limit (FEL) . 18
B.1 General . 18
B.2 Reflection of laser radiation . 19
B.3 Examples of assessment conditions . 19
B.4 Exposure duration . 22
Annex C (informative) Elaboration of defined terms . 25
C.1 Distinction between FEL and PEL . 25
C.2 Active guard parameters . 25
Annex D (normative) Proprietary laser guard testing . 27
D.1 General . 27
D.2 Test conditions . 27
D.3 Protection time corresponding to the specified protective exposure limit
(PEL) . 31
D.4 Information supplied by the manufacturer. 31
Annex E (informative) Guidelines on the arrangement and installation of laser guards . 33
E.1 Overview. 33
E.2 General . 33
E.3 Risk assessment . 34
E.4 Examples of risk assessment . 36
E.5 Aids to risk assessment . 39
Annex F (informative) Guideline for assessing the suitability of laser guards . 42
F.1 Identification of hazards . 42
F.2 Risk assessment and integrity . 42
...