EN 60825-2:2004

Safety of laser products - Part 2: Safety of optical fibre communication systems (OFCS)

Provides requirements and specific guidance for the safe operation and maintenance of optical fibre communication systems (OFCS). In these systems optical power may be accessible outside the confinements of transmitting equipment or at great distance from the optical source. This standard requires the assessment of hazard levels at accessible locations as a replacement for classification according to EN 60825-1. It applies to the complete installed end-to-end OFCS, including its components and subassemblies that generate or amplify optical radiation. Individual components and subassemblies that are sold only to OEM vendors for incorporation into a complete installed end-to-end OFCS need not be assessed to this standard, since the final OFCS should itself be assessed according to this standard. The objective of this Part 2 of EN 60825 is to: - protect people from optical radiation resulting from OFCS; - provide requirements for manufacturers, installation organizations, service organizations and operating organizations in order to establish procedures and supply information so that proper precautions can be adopted; - ensure adequate warnings are provided to individuals regarding the potential hazards associated with OFCS through the use of signs, labels and instructions.

Sicherheit von Lasereinrichtungen - Teil 2: Sicherheit von Lichtwellenleiter-Kommunikationssystemen (LWLKS)

Sécurité des appareils à laser - Partie 2: Sécurité des systèmes de télécommunication par fibres optiques (STFO)

Provides requirements and specific guidance for the safe operation and maintenance of optical fibre communication systems (OFCS). In these systems optical power may be accessible outside the confinements of transmitting equipment or at great distance from the optical source. This standard requires the assessment of hazard levels at accessible locations as a replacement for classification according to EN 60825-1. It applies to the complete installed end-to-end OFCS, including its components and subassemblies that generate or amplify optical radiation. Individual components and subassemblies that are sold only to OEM vendors for incorporation into a complete installed end-to-end OFCS need not be assessed to this standard, since the final OFCS should itself be assessed according to this standard. The objective of this Part 2 of EN 60825 is to: - protect people from optical radiation resulting from OFCS; - provide requirements for manufacturers, installation organizations, service organizations and operating organizations in order to establish procedures and supply information so that proper precautions can be adopted; - ensure adequate warnings are provided to individuals regarding the potential hazards associated with OFCS through the use of signs, labels and instructions.

Varnost laserskih izdelkov – 2. del: Varnost komunikacijskih sistemov z optičnimi vlakni (OFCS) (IEC 60825-2:2004)

Ta 2. del IEC 60825 podaja zahteve in posebna navodila za varno obratovanje in vzdrževanje komunikacijskih sistemov z optičnimi vlakni (OFCS). V teh sistemih je optična moč lahko dostopna izven omejitev opreme za prenos ali na veliki razdalji od optičnega vira. Ta standard zahteva oceno stopenj nevarnosti na dostopnih lokacijah kot nadomestilo za razvrstitev v skladu z IEC 60825-1. Velja za celotne nameščene OFCS med dvema točkama, vključno z njihovimi sestavnimi deli in podsklopi, ki generirajo ali ojačajo optično sevanje. Ni treba, da so posamezni sestavni deli in podsklopi, ki se prodajajo samo prodajalcem-proizvajalcem originalne opreme (OEM) za vgradnjo v kompletne nameščene OFCS med dvema točkama, ocenjeni po tem standardu, saj mora biti sam končni OFCS ocenjen v skladu s tem standardom.   Namen tega 2. dela IEC 60825 je: - zaščititi ljudi pred optičnim sevanjem, ki ga povzroča OFCS; - zagotoviti zahteve za proizvajalce, organizacije, ki nameščajo, servisne organizacije in organizacije za obratovanje, z namenom vzpostaviti postopke in zagotoviti podatke, da bi lahko bili zagotovljeni ustrezni varnostni ukrepi; - zagotoviti, da so posameznikom zagotovljena ustrezna opozorila glede morebitnih nevarnosti, povezanih z OFCS, z uporabo znakov, oznak in navodil.

General Information

• Status: Published
• Publication Date: 25-Oct-2004
• Withdrawal Date: 31-Aug-2007
• ICS: 31.260 - Optoelectronics. Laser equipment
• ICS: 33.180.01 - Fibre optic systems in general
• Technical Committee: CLC/TC 76 - Optical radiation safety and laser equipment
• Drafting Committee: IEC/TC 76 - IEC_TC_76
• Parallel Committee: IEC/TC 76 - IEC_TC_76
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Completion Date: 26-Oct-2022
• Directive: 1999/5/EC - Directive 1999/5/EC of the European Parliament and of the Council of 9 March 1999 on radio equipment and telecommunications terminal equipment and the mutual recognition of their conformity
• Directive: 2006/95/EC - Directive 2006/95/EC of the European Parliament and of the Council of 12 December 2006 on the harmonisation of the laws of Member States relating to electrical equipment designed for use within certain voltage limits (codified version)
• 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
• Directive: 73/23/EEC - Electrical equipment designed for use within certain voltage limits
• Ref Project: SIST EN 60825-2:2005 - Safety of laser products -- Part 2: Safety of optical fibre communication systems (OFCS)

Relations

• Replaces: EN 60825-2:2000 - Safety of laser products - Part 2: Safety of optical fibre communication systems
• Effective Date: 28-Jan-2023
• Amended By: EN 60825-2:2004/A1:2007 - Safety of laser products - Part 2: Safety of optical fibre communication systems (OFCS)
• Effective Date: 28-Jan-2023
• Amended By: EN 60825-2:2004/A2:2010 - Safety of laser products - Part 2: Safety of optical fibre communication systems (OFCS)
• Effective Date: 28-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
01-junij-2005
1DGRPHãþD
SIST EN 60825-2:2001
9DUQRVWODVHUVNLKL]GHONRY±GHO9DUQRVWNRPXQLNDFLMVNLKVLVWHPRY]RSWLþQLPL
YODNQL2)&6,(&
Safety of laser products -- Part 2: Safety of optical fibre communication systems (OFCS)
Sicherheit von Lasereinrichtungen -- Teil 2: Sicherheit von Lichtwellenleiter-
Kommunikationssystemen (LWLKS)
Sécurité des appareils à laser -- Partie 2: Sécurité des systèmes de télécommunication
par fibres optiques (STFO)
Ta slovenski standard je istoveten z: EN 60825-2:2004
ICS:
31.260 Optoelektronika, laserska Optoelectronics. Laser
oprema equipment
33.180.01 6LVWHPL]RSWLþQLPLYODNQLQD Fibre optic systems in
VSORãQR general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 60825-2
NORME EUROPÉENNE
EUROPÄISCHE NORM October 2004

ICS 31.260 ; 33.180.01 Supersedes EN 60825-2:2000

English version
Safety of laser products
Part 2: Safety of optical fibre communication systems (OFCS)
(IEC 60825-2:2004)
Sécurité des appareils à laser Sicherheit von Lasereinrichtungen
Partie 2: Sécurité des systèmes Teil 2: Sicherheit von Lichtwellenleiter-
de télécommunication par fibres optiques Kommunikationssystemen (LWLKS)
(STFO) (IEC 60825-2:2004)
(CEI 60825-2:2004)
This European Standard was approved by CENELEC on 2004-09-01. 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, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden,
Switzerland and United Kingdom.
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

© 2004 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 60825-2:2004 E
Foreword
The text of document 76/288/FDIS, future edition 3 of IEC 60825-2, 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 60825-2 on 2004-09-01.
This European Standard supersedes EN 60825-2:2000. It constitutes a technical revision to bring the
hazard level nomenclature used in this document into correspondence with the revised classification
system introduced in amendment A2:2001 to EN 60825-1:1994. Additionally, the standard has been
thoroughly revised throughout.

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) 2005-06-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2007-09-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 60825-2:2004 was approved by CENELEC as a European
Standard without any modification.
__________
- 3 - EN 60825-2:2004
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 Where 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 1993 Safety of laser products EN 60825-1 1994
Part 1: Equipment classification, + Corr. February 1995
requirements and user's guide
A1 1997 A1 2002
A2 2001 A2 2001
INTERNATIONAL IEC
STANDARD 60825-2
Third edition
2004-06
Safety of laser products –
Part 2:
Safety of optical fibre communication
systems (OFCS)
© IEC 2004 ⎯ Copyright - all rights reserved
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, Switzerland
Telephone: [phone] Telefax: [phone] E-mail: [e-mail] Web: www.iec.ch
PRICE CODE
Commission Electrotechnique Internationale
X
International Electrotechnical Commission
Международная Электротехническая Комиссия
For price, see current catalogue

– 2 – 60825-2 © IEC:2004(E)
CONTENTS
FOREWORD.4

1 Scope and object.6
2 Normative references.7
3 Terms and definitions .7
4 Requirements.10
4.1 General.10
4.2 Protective housing of OFCS.10
4.3 Fibre cables.10
4.4 Cable connectors.10
4.5 Automatic power reduction (APR) and restart pulses .11
4.6 Labelling or marking.12
4.7 Organizational requirements .13
4.8 Assessment of hazard level .15
4.9 Hazard level requirements by location type .16

Annex A (informative) Rationale .17
Annex B (informative) Summary of requirements at locations in OFCS .18
Annex C (informative) Methods of hazard/safety analysis .19
Annex D (informative) Application notes for the safe use of OFCS .20
Annex E (informative) Guidance for service and maintenance .44
Annex F (informative) Clarification of the meaning of “hazard level” .47

Bibliography .49

Figure D.1 – PON (passive optical network)-based system .30
Figure D.2 – Simple laser drive circuit .32
Figure D.3 – Risk graph example from IEC 61508-5 Clause D.5.35
Figure D.4 – Graph of FIT rate and mean time to repair .38

Table D.1 – OFCS power limits for 11 µm single mode (SM) fibres and 0,18 numerical
aperture multimode (MM) fibres (core diameter < 150 µm) .23
Table D.2 – Relation between the number of fibres in a ribbon fibre and the maximum
permitted power (example).29
Table D.3 – Identification of components and failure modes (example).32
Table D.4 – Beta values (example).33
Table D.5 – Determination of failure rates (example) .34
Table D.6 – Consequence classification from IEC 61508-5 Table D.1.35
Table D.7 – Frequency classification from IEC 61508-5 Table D.1 .36
Table D.8 – Possibility of avoiding hazard classification from IEC 61508-5 Table D.1 .36
Table D.9 – Classification of the probability of the unwanted occurrence from
IEC 61508-5 Table D.1 .36
Table D.10 – Modes of operation – Definitions from IEC 61508-4, 3.5.12 .37

60825-2 © IEC:2004(E) – 3 –
Table D.11 – SIL Values from IEC 61508-1, 7.6.2.9 .37
Table D.12 – Determination of equipment monitoring classification .39
Table D.13 – FIT rates from example above .40
Table D.14 – Examples of power limits for OFCS having automatic power reduction to
reduce emissions to a lower hazard level .43

– 4 – 60825-2 © IEC:2004(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SAFETY OF LASER PRODUCTS –
Part 2: Safety of optical fibre communication systems (OFCS)

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
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
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 60825-2 has been prepared by IEC technical committee 76:
Optical radiation safety and laser equipment
This third edition cancels and replaces the second edition published in 2000. It constitutes a
technical revision to bring the hazard level nomenclature used in this document into
correspondence with the revised classification system introduced in IEC 60825-1(2001).
Additionally, the standard has been thoroughly revised throughout.
The text of this standard i
...