SIST EN 61821:2003

SLOVENSKI SIST EN 61821:2003

STANDARD
april 2003
Electrical installations for lighting and beaconing of aerodromes - Maintenance of
aeronautical ground lighting constant current series circuits
ICS 29.140.50; 93.120 Referenčna številka
SIST EN 61821:2003(en)
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

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EUROPEAN STANDARD EN 61821
NORME EUROPÉENNE
EUROPÄISCHE NORM January 2003

ICS 93.120; 29.140.50


English version


Electrical installations for lighting and beaconing of aerodromes -
Maintenance of aeronautical ground lighting
constant current series circuits
(IEC 61821:2002)


Installations électriques pour l'éclairage  Elektrische Anlagen für Beleuchtung
et le balisage des aérodromes - und Befeuerung von Flugplätzen -
Maintenance des circuits série Wartung von Konstantstrom-
à courant constant pour le balisage Serienstromkreisen
aéronautique au sol für Flugplatzbefeuerungsanlagen
(CEI 61821:2002) (IEC 61821:2002)




This European Standard was approved by CENELEC on 2002-12-03. 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, Czech Republic,
Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta,
Netherlands, Norway, Portugal, Slovakia, 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


© 2003 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 61821:2003 E

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EN 61821:2003 - 2 -
Foreword

The text of document 97/77/FDIS, future edition 1 of IEC 61821, prepared by IEC TC 97, Electrical
installations for lighting and beaconing of aerodromes, was submitted to the IEC-CENELEC parallel
vote and was approved by CENELEC as EN 61821 on 2002-12-03.

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) 2003-09-01

– latest date by which the national standards conflicting
 with the EN have to be withdrawn (dow) 2005-12-01

Annexes designated "normative" are part of the body of the standard.
Annexes designated "informative" are given for information only.
In this standard, annex ZA is normative and annex A is informative.
Annex ZA has been added by CENELEC.

__________

Endorsement notice

The text of the International Standard IEC 61821:2002 was approved by CENELEC as a European
Standard without any modification.
__________

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- 3 - EN 61821:2003
Annex ZA
(normative)

Normative references to international publications
with their corresponding European publications
This European Standard incorporates by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions of any
of these publications apply to this European Standard only when incorporated in it by amendment or
revision. For undated references the latest edition of the publication referred to applies (including
amendments).
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 60903 (mod) 1988 Specification for gloves and mitts of EN 60903 1992
insulating material for live working

1)
IEC/TS 62143 - Electrical installations for lighting and - -
beaconing of aerodromes - Aeronautical
ground lighting systems - Guidelines for
the development of a safety lifecycle
methodology

ISO/IEC Guide 51 1999 Safety aspects - Guidelines for their - -
inclusion in standards



1)
Undated reference.

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NORME
CEI
INTERNATIONALE IEC
61821
INTERNATIONAL
Première édition
STANDARD
First edition
2002-03
Electrical installations for lighting
and beaconing of aerodromes –
Maintenance of aeronautical ground
lighting constant current series circuits
Installations électriques pour l'éclairage
et le balisage des aérodromes –
Maintenance des circuits série à courant
constant pour le balisage aéronautique
au sol
© IEC 2002 Droits de reproduction réservés ⎯ Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in any
utilisée sous quelque forme que ce soit et par aucun procédé, form or by any means, electronic or mechanical, including
électronique ou mécanique, y compris la photocopie et les photocopying and microfilm, without permission in writing from
microfilms, sans l'accord écrit de l'éditeur. the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch  Web: www.iec.ch
CODE PRIX
U
Commission Electrotechnique Internationale PRICE CODE
International Electrotechnical Commission
ɆɟɠɞɭɧɚɪɨɞɧɚɹɗɥɟɤɬɪɨɬɟɯɧɢɱɟɫɤɚɹɄɨɦɢɫɫɢɹ
Pour prix, voir catalogue en vigueur
For price, see current catalogue

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61821 © IEC:2002 – 3 –
CONTENTS
FOREWORD.5
INTRODUCTION.7
1 Scope.9
2 Normative references .9
3 Definitions .9
4 Competence of persons.15
4.1 Objective.15
4.2 Requirements.15
5 Management of maintenance activities .17
5.1 Objective.17
5.2 Requirements.17
5.2.1 Organisational roles and responsibilities.17
5.2.2 Use of contractors .17
5.2.3 Maintenance policy.17
5.2.4 Maintenance procedures .19
5.2.5 Admittance to AGL work areas .21
5.2.6 Manning levels .21
6 Safety requirements .21
6.1 Objective.21
6.2 Requirements.23
6.2.1 Safety procedures .23
6.2.2 Live working .25
6.2.3 Safety checks.25
6.2.4 Tools and test equipment .27
6.2.5 Safety equipment.27
6.2.6 Personal protective equipment.27
7 AGL maintenance procedures.27
7.1 Objective.27
7.2 Requirements.29
7.2.1 General .29
7.2.2 Pre-work procedures .29
7.2.3 AGL constant current series circuits .31
7.2.4 Cables.31
7.2.5 Completion of work.31
7.2.6 Records and documentation .33
Annex A (informative) Maintenance organisation model .35
Figure A.1 – AGL maintenance organisation structural diagram .37
Figure A.2 – AGL constant current series circuit maintenance model .49
Figure A.3 – Example of a permit-to-work/sanction-to-test sheet.51
Figure A.4 – Example of a permit-to-work/sanction-to-test sheet.53

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61821 © IEC:2002 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
___________
ELECTRICAL INSTALLATIONS FOR LIGHTING
AND BEACONING OF AERODROMES –
MAINTENANCE OF AERONAUTICAL GROUND LIGHTING
CONSTANT CURRENT SERIES CIRCUITS
FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the 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, the IEC publishes International Standards. 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. The 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 the 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 National Committees.
3) The documents produced have the form of recommendations for international use and are published in the form
of standards, technical specifications, technical reports or guides and they are accepted by the National
Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject
of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 61821 has been prepared by IEC technical committee 97:
Electrical installations for lighting and beaconing of aerodromes.
The text of this standard is based on the following documents:
FDIS Report on voting
97/77/FDIS 97/84/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 3.
The committee has decided that the contents of this publication will remain unchanged
until 2006. At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.

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61821 © IEC:2002 – 7 –
INTRODUCTION
This International Standard contains the management, safety and procedural requirements
specific to the maintenance of an aeronautical ground lighting (AGL) constant current series
circuit and has taken into consideration existing national standards, requirements and
practices. The maintenance activities are required to ensure that the AGL constant current
series circuit continues to meet the operational requirements and minimise the occurrence of
operational failures.
To conform to this International Standard it should be demonstrated to the relevant bodies
that the requirements have been satisfied and therefore that the clause objective(s) has(have)
been met.
NOTE Examples of relevant bodies would include the following:
• certification and licensing authorities;
• safety regulators;
• notified bodies for international or European directives;
• national standards bodies.

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61821 © IEC:2002 – 9 –
ELECTRICAL INSTALLATIONS FOR LIGHTING
AND BEACONING OF AERODROMES –
MAINTENANCE OF AERONAUTICAL GROUND LIGHTING
CONSTANT CURRENT SERIES CIRCUITS
1 Scope
This International Standard applies to the maintenance of AGL constant current series
circuits.
This International Standard
• covers constant current series circuits for AGL installed at aerodromes and heliports;
• concentrates on providing the safety requirements for the maintenance of an AGL
constant current series circuit. It is recognised that AGL constant current series circuits of
different design characteristics and parameters are in existence;
• is mainly concerned with safety to persons by specifying the rules and fundamental
principles for the maintenance of AGL constant current series circuits;
• is not intended to apply to AGL primary series circuits supplied directly from a mains
constant voltage source;
• is not intended to be used for public street lighting, roadway lighting or any other
installation requiring the use of constant current series circuits.
2 Normative references
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.
IEC 60903:1988, Specification for gloves and mitts of insulating material for live working
IEC/TS 62143, – Electrical installations for the lighting and beaconing of aerodromes –
Aeronautical ground lighting systems – Guidelines for the development of a safety life-cycle
1)
methodology
IEC/ISO Guide 51:1999, Safety aspects – Guidelines for their inclusion in standards
3 Definitions
For the purpose of this International Standard the following definitions apply.
________
1)
 To be published.

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61821 © IEC:2002 – 11 –
3.1
aerodrome authority
organisation accountable for the safety and security of persons, aircraft operations and
facilities at an aerodrome
3.2
AGL constant current series circuit
apparatus configured as an electrical circuit designed to produce and operate with a constant
current, independent of specified load variations, in order to provide a specified light for
aeronautical purposes
3.3
AGL operator
person responsible for the control of the AGL to permit the safe movement of aircraft
3.4
caution sign
non-metallic safety sign attached to equipment conveying a warning against interference with
such equipment
3.5
constant current regulator (CCR)
apparatus which produces a current output at a constant r.m.s. value independent of varia-
tions in the constant current series circuit load, input voltage and service conditions as specified
3.6
contractor
organisation or person(s) given a written order to provide a service or undertake specified work
3.7
dead
free from any electrical connection to a source of potential difference and from electric
charge; not having a potential different from that of the earth
3.8
earthed
connected to the general mass of earth in such a manner as to ensure at all times an
immediate discharge of electrical energy without harm
3.9
electrical equipment
anything used, intended to be used or installed for use, to generate, provide, transmit, trans-
form, rectify, convert, conduct, distributes, control, store, measure or use electrical energy
3.10
harm
physical injury or damage to the health of people either directly, or indirectly, as a result of
damage to property or to the environment.
[ISO/IEC Guide 51, 3.3, modified]

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61821 © IEC:2002 – 13 –
3.11
hazard
potential source of harm.
NOTE The term includes hazards to persons arising within a short time scale (for example, fire and explosion)
and also those that have a long-term effect on a person’s health (for example, release of a toxic substance).
[ISO/IEC Guide 51, 3.5, modified]
3.12
hazardous event
occurrence, with possible hazardous consequences, arising as the result of a hazardous
condition
3.13
hazard sign
non-metallic safety sign that conveys a warning against risk of harm
3.14
isolate
disconnect and separate electrical equipment from the normal source(s) of electrical energy in
such a way that the disconnection and separation is secure
3.15
live
electrically connected to a source of electricity or which has acquired a charge by other
means
3.16
maintenance
act of diagnosing and physically repairing, or preventing, equipment failures
3.17
personal protective equipment
equipment used to protect persons from harm in the working environment
NOTE Personal protective equipment includes such items as special tools, protective clothing, insulating
screening, safety harnesses and safety signs.
3.18
prove dead
demonstrate with the use of test equipment that no electrical potential liable to cause harm is
present
3.19
risk
combination of the probability of occurrence of harm and the severity of that harm
[ISO/IEC Guide 51, 3.2]
3.20
risk assessment
1. systematic quantitative assessment of the magnitude of the threat to safety induced by the
accumulation of controlled and unresolved residual hazards;
2. integrated analysis of the risks inherent in a product, system or facility and their signi-
ficance in an appropriate context

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61821 © IEC:2002 – 15 –
3.21
test equipment
equipment to undertake particular tests, that is suitable for the use for which it is provided,
that is maintained in a condition suitable for that use, and that is properly used
3.22
test/testing (of equipment)
1. providing a sequence of operations or the measuring of electrical characteristics of live
electrical equipment (for example, diagnostic testing of faulty equipment);
2. applying voltages, currents or signals for the purposes of providing insulation, continuity or
other characteristic of isolated electrical equipment (for example, before a permanent
electrical installation is energised from the normal source(s) of electrical energy)
3.23
work/working (on electrical equipment)
installing, dismantling, assembling, maintaining or repairing of electrical equipment
4 Competence of persons
4.1 Objective
The objective of the requirements of this clause is to ensure that persons who have
responsibility for any activity, or are directly engaged in the maintenance of AGL constant
current series circuits are competent to discharge those duties or perform those tasks.
NOTE It is recommended that the appropriate administration or aerodrome authority encourage the development
of a formal and structured competency training programme(s). The training programme(s) should consist of multiple
tiers that enhance progressively a person’s skills and ensure a recognised level of competency for those persons
who have satisfactorily completed the programme(s).
4.2 Requirements
In accordance with national legislation, all persons involved in any activity, including manage-
ment and maintenance activities, shall have the appropriate and verifiable training, technical
knowledge, experience and qualifications relevant to the specific duties they have to perform.
In particular, where involved in work on constant current series circuits, they shall be
knowledgeable of the specific risks and the safety procedures involved in the work. The
training, experience and qualifications of all persons involved in any activity shall be justified
taking into account all the relevant competence factors. The justification shall be recorded in
appropriate documentation.
NOTE The following competence factors should be addressed when assessing and justifying the competence of
persons carrying out their duties:
• engineering appropriate to the application area;
• engineering appropriate to the technology (for example, mechanical, electrical/electronic/software engineering);
• safety engineering appropriate to the technology;
• knowledge of the legal and safety regulatory framework;
• knowledge of the operational aspects related to the AGL system at the aerodrome;
• the consequences in the event of a failure of a constant current series circuit;
• the consequences of failure to adhere to safety procedures when working on constant current series circuits;
• the novelty of the design, design procedures or application;
• previous experience relevant to the specific duties to be performed and the technology being employed;
• relevance of qualifications to the specific duties performed.

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61821 © IEC:2002 – 17 –
5 Management of maintenance activities
5.1 Objective
The objective of the requirements of this clause is to detail the roles and responsibilities of
those personnel engaged in maintenance activities on or near AGL constant current series
circuits and the procedures to ensure that safety is addressed.
5.2 Requirements
5.2.1 Organisational roles and responsibilities
The aerodrome authority shall appoint one or more named persons to manage, supervise or
undertake specific maintenance tasks. Those persons shall be identified on any applicable
record or other documentation associated with the task. All persons involved in work on the
AGL shall be aware of
• their role and responsibilities;
• their duties and how to perform those duties;
• the procedures to be followed;
• contingency working arrangements.
The content of this clause is a minimum requirement. Annex A illustrates a model hierarchy of
a more structured and comprehensive maintenance organisation.
NOTE IEC 62143 contains details of requirements for the safety management of an AGL system at an aerodrome.
5.2.2 Use of contractors
The aerodrome authority retains full accountability under these requirements for all work
undertaken on an AGL constant current series circuit by a contractor. This accountability shall
include where the AGL constant current series circuit, or part of it, is to be under the control
of a contractor. The aerodrome authority shall ensure that all other organisations, including
the users and operators of the AGL and other applicable aerodrome facilities, are notified
prior to the commencement of the work and the procedures used. Contractors and other non-
aerodrome employees shall follow the safety rules and procedures provided by the aerodrome
authority (see 5.2.4).
5.2.3 Maintenance policy
5.2.3.1 Concept
A maintenance policy shall be produced and implemented. The maintenance policy shall
include the following aspects:
• the maintenance philosophy, that includes and takes account of
– the maintenance objectives;
– the operational requirements;
– the maintenance resources;

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61821 © IEC:2002 – 19 –
• a maintenance schedule and procedures (see 5.2.4), which includes
– planned, controlled, conditional and corrective maintenance programmes;
– post-maintenance activities;
– the modification or upgrading of equipment;
• reference to the maintenance procedures (see 5.2.4);
• reference to specific safety procedures (see 6.2.1);
• the management of records and documentation (see 7.2.6);
• the provision of spares, tools, test and safety equipment (see 6.2.4 and 6.2.5);
• inspections (see 7.2);
• provision for the review and amendment of the maintenance policy.
NOTE 1 Maintenance activities can be described as
• planned, where prescribed tasks are carried out on a routine basis;
• controlled, where an analysis of the equipment is carried out in order to minimise the amount of planned
maintenance required;
• conditional, where the maintenance requirements have changed during the life of the equipment;
• corrective, in order to restore equipment to the required operational state.
NOTE 2 Figure A.2 of annex A illustrates an example model for a maintenance policy that includes the above
maintenance activities.
5.2.3.2 Operational aspects
The maintenance of AGL equipment shall consider the objectives of aerodrome operations
and address the impact on such operations whilst maintenance activities are being carried
out.
NOTE For example, the following should be considered:
• the withdrawal of operational facilities and the closing of movement areas to aircraft operations prior to works;
• the return of operational facilities and movement areas when operationally necessary even though the works
may not be completed;
• the raising of a notice to airmen (NOTAM) where work will affect the availability of operational facilities;
• procedures for entering and being recalled from active operational areas;
• precautions to prevent the possibility of foreign object damage (FOD) to aircraft by maintenance (particularly
vehicles) and excavating plant;
• procedures for communication with the AGL operator before, during and after works.
5.2.4 Maintenance procedures
5.2.4.1 Procedures manual
Maintenance procedures that instruct on the correct and safe method of maintenance shall be
provided for each maintenance activity that is to be undertaken on the AGL. The maintenance
procedures shall be contained in a suitable document (for example, an AGL operation and
maintenance plan, see IEC 62143) and shall be provided and used at all times. A copy of the
maintenance procedures shall be made available to all AGL maintenance personnel and any
contractors' representative(s). They shall read and understand the maintenance procedures
and their implication to both themselves and others. Ignorance of the procedures shall not be
accepted as an excuse for neglect of responsible action or failure to implement them.
The aerodrome authority shall keep an appropriately controlled record of this action.

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61821 © IEC:2002 – 21 –
Any questions of safety shall be raised with the aerodrome authority who shall have the
matter investigated and satisfactorily resolved before the applicable work commences.
In all appropriate work areas there shall be access to the following items:
• a copy of the maintenance procedures;
• instructions and details of procedures designed to protect personnel;
• applicable safety equipment;
• all relevant and appropriate drawings of the equipment and its identification and location;
• all relevant service manuals;
• local safety and operational procedures.
5.2.4.2 Authorisation procedures
The aerodrome authority shall determine which activities require authorisation, who is able to
give the authorisation, how the authorisation, including written permission, is to be obtained,
and all other safety procedures associated with the activity. One method, a safe system of
work involving the issuance of permits/s
...