EN 60825-4:2006

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Safety of laser products - Part 4: Laser guards (IEC 60825-4:2006)Sécurité des appareils a laser - Partie 4: Protecteurs pour lasers (IEC 60825-4:2006)Sicherheit von Lasereinrichtungen - Teil 4: Laserschutzwände (IEC 60825-4:2006)Ta slovenski standard je istoveten z:EN 60825-4:2006SIST EN 60825-4:2008en,fr,de31.260Optoelektronika, laserska opremaOptoelectronics. Laser equipmentICS:SIST EN 60825-4:1999/A2:2004SIST EN 60825-4:1999/A1:2003SIST EN 60825-4:19991DGRPHãþDSLOVENSKI
STANDARDSIST EN 60825-4:200801-januar-2008

EUROPEAN STANDARD EN 60825-4 NORME EUROPÉENNE
EUROPÄISCHE NORM October 2006
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
© 2006 CENELEC -
All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60825-4:2006 E
ICS 31.260 Supersedes EN 60825-4:1997 + A1:2002 + A2:2003
English version
Safety of laser products
Part 4: Laser guards (IEC 60825-4:2006)
Sécurité des appareils à laser
Partie 4: Protecteurs pour lasers (CEI 60825-4:2006)
Sicherheit von Lasereinrichtungen
Teil 4: Laserschutzwände (IEC 60825-4:2006)
This European Standard was approved by CENELEC on 2006-10-01. 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, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom.

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Foreword The text of document 76/342/FDIS, future edition 2 of IEC 60825-4, prepared by IEC TC 76, Optical radiation safety and laser equipment, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60825-4 on 2006-10-01. This European Standard supersedes EN 60825-4:1997 + A1:2002 + A2:2003. 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)
2007-07-01 – latest date by which the national standards conflicting
with the EN have to be withdrawn
(dow)
2009-10-01 Annex ZA has been added by CENELEC. __________ Endorsement notice The text of the International Standard IEC 60825-4:2006 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 standards indicated: IEC 60204-1 NOTE
Harmonized as EN 60204-1:2006 (modified). IEC 61310-3 NOTE
Harmonized as EN 61310-3:1999 (not modified). IEC 61496-2 NOTE
Harmonized as CLC/TS 61496-2:2006 (not modified). IEC/TS 62046 NOTE
Harmonized as CLC/TS 62046:2005 (not modified). ISO 10218 NOTE
Harmonized as EN 775:1992 (modified). __________

- 3 - EN 60825-4:2006 Annex ZA
(normative)
Normative references to international publications with their corresponding European publications
The following referenced documents are indispensable for the application 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
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 60825-1
A1 A2 1993
1997 2001 Safety of laser products
Part 1: Equipment classification,
requirements and user's guide EN 60825-1 + corr. February
A1 A2 + corr. April
1994 1995 2002 2001 2004
ISO 11553-1 2005 Safety of machinery - Laser processing machines
Part 1: General safety requirements EN ISO 11553-1 2005
ISO 12100-1 2003 Safety of machinery - Basic concepts,
general principles for design
Part 1: Basic terminology, methodology EN ISO 12100-1 2003
ISO 12100-2 2003 Safety of machinery - Basic concepts,
general principles for design
Part 2: Technical principles EN ISO 12100-2 2003

NORME INTERNATIONALECEIIEC INTERNATIONAL STANDARD 60825-4Deuxième éditionSecond edition2006-08 Sécurité des appareils à laser – Partie 4: Protecteurs pour lasers
Safety of laser products – Part 4: Laser guards Pour prix, voir catalogue en vigueur For price, see current catalogue IEC 2006
Droits de reproduction réservés

Copyright - all rights reserved Aucune partie de cette publication ne peut être reproduite ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie et les microfilms, sans l'accord écrit de l'éditeur. 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 the publisher. International Electrotechnical Commission,
3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, SwitzerlandTelephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch
Web: www.iec.ch CODE PRIX PRICE CODE XB Commission Electrotechnique InternationaleInternational Electrotechnical Commission

60825-4  IEC:2006 – 3 –
CONTENTS FOREWORD.9 INTRODUCTION.13
1 Scope.15 2 Normative references.15 3 Definitions.15 4 Laser processing machines.19 4.1 Design requirements.19 4.2 Performance requirements.21 4.3 Validation.21 4.4 User information.23 5 Proprietary laser guards.23 5.1 Design requirements.23 5.2 Performance requirements.23 5.3 Specification requirements.23 5.4 Test requirements.25 5.5 Labelling requirements.25 5.6 User information.27
Annex A (informative)
General guidance on the design and selection of laser guards.29 Annex B (informative)
Assessment of foreseeable exposure limit (FEL).33 Annex C (informative)
Elaboration of defined terms.47 Annex D (normative)
Proprietary laser guard testing.51 Annex E (informative)
Guidelines on the arrangement and installation
of laser guards.55 Annex F (informative)
Guideline for assessing the suitability of laser guards.75
Bibliography.133
Figure B.1 – Calculation of diffuse reflections.35 Figure B.2 – Calculation of specular reflections.35 Figure B.3 – Some examples of a foreseeable fault condition.37 Figure B.4 – Four examples of errant laser beams that might have to be contained by a temporary guard under service conditions.39 Figure B.5 – Illustration of laser guard exposure during repetitive machine operation.41 Figure B.6 – Two examples of assessed duration of exposure.43 Figure B.7 – Assessed duration of exposure for a machine with no safety monitoring.45 Figure C.1 – Illustration of guarding around a laser processing machine.47 Figure C.2 – Illustration of active laser guard parameters.49 Figure D.1 – Simplified diagram of the test arrangement.53

60825-4  IEC:2006 – 5 –
Figure F.1 – Damage resistance of 1 mm thick zinc coated steel sheet derived from
10 s exposure to a defocused beam during experiments using a CW CO2 laser.111 Figure F.2 – Damage resistance of 1 mm thick zinc coated steel sheet derived from 100 s exposure to a defocused beam during experiments using a CW CO2 laser.111 Figure F.3 – Damage resistance of 2 mm thick zinc coated steel sheet derived from
10 s exposure to a defocused beam during experiments using a CW CO2 laser.113 Figure F.4 – Damage resistance of 2 mm thick zinc coated steel sheet derived from 100 s exposure to a defocused beam during experiments using a CW CO2 laser.113 Figure F.5 – Damage resistance of 3 mm thick zinc coated steel sheet derived from
10 s exposure to a defocused beam during experiments using a CW CO2 laser.115 Figure F.6 – Damage resistance of 3 mm thick zinc coated steel sheet derived from 100 s exposure to a defocused beam during experiments using a CW CO2 laser.115 Figure F.7 – Damage resistance of 2 mm thick aluminium sheet derived from 10 s exposure to a defocused beam during experiments using a CW CO2 laser.117 Figure F.8 – Damage resistance of 2 mm thick aluminium sheet derived from 100 s exposure to a defocused beam during experiments using a CW CO2 laser.117 Figure F.9 – Damage resistance of 1 mm thick stainless steel sheet derived from 10 s exposure to a defocused beam during experiments using a CW CO2 laser.119 Figure F.10 – Damage resistance of 1 mm thick stainless steel sheet derived from
100 s exposure to a defocused beam during experiments using a CW CO2 laser.119 Figure F.11 – Damage resistance of 6 mm thick polycarbonate sheet derived from 10 s exposure to a defocused beam during experiments using a CW CO2 laser.121 Figure F.12 – Damage resistance of 6 mm thick polycarbonate sheet derived from
100 s exposure to a defocused beam during experiments using a CW CO2 laser.121 Figure F.13 – Damage resistance of 1 mm thick zinc coated steel sheet derived from 10 s exposure to a defocused beam during experiments using a CW Nd:YAG laser.123 Figure F.14 – Damage resistance of 1 mm thick zinc coated steel sheet derived from 100 s exposure to a defocused beam during experiments using a CW Nd:YAG laser.123 Figure F.15 – Damage resistance of 2 mm thick zinc coated steel sheet derived from 10 s exposure to a defocused beam during experiments using a CW Nd:YAG laser.125 Figure F.16 – Damage resistance of 2 mm thick zinc coated steel sheet derived from 100 s exposure to a defocused beam during experiments using a CW Nd:YAG laser.125 Figure F.17 – Damage resistance of 3 mm thick zinc coated steel sheet derived from 10 s exposure to a defocused beam during experiments using a CW Nd:YAG laser.127

60825-4  IEC:2006 – 7 –
Figure F.18 – Damage resistance of 3 mm thick zinc coated steel sheet derived from 100 s exposure to a defocused beam during experiments using a CW Nd:YAG laser.127 Figure F.19 – Damage resistance of 2 mm thick aluminium sheet derived from 10 s exposure to a defocused beam during experiments using a CW Nd:YAG laser.129 Figure F.20 – Damage resistance of 2 mm thick aluminium sheet derived from 100 s exposure to a defocused beam during experiments using a CW Nd:YAG laser.129 Figure F.21 – Damage resistance of 1 mm thick stainless steel sheet derived from 10 s exposure to a defocused beam during experiments using a CW Nd:YAG laser.131 Figure F.22 – Damage resistance of 1 mm thick stainless steel sheet derived from
100 s exposure to a defocused beam during experiments using a CW Nd:YAG laser.131
Table D.1 – Laser guard classification.53 Table F.1 – Application of ALARP.81

60825-4  IEC:2006 – 9 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION ___________
SAFETY OF LASER PRODUCTS –
Part 4: Laser guards
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 wor
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