Electrical installations for lighting and beaconing of aerodromes - Maintenance of aeronautical ground lighting constant current series circuits

IEC 61821:2011 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 recognized 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. This second edition cancels and replaces the first edition published in 2002. It is a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) addition of references to normative references; b) addition of notes in Clauses 5, 6 and 7; c) modification of pre-work procedures in item e) of 7.2.2.

Elektrische Anlagen für Beleuchtung und Befeuerung von Flugplätzen - Instandhaltung von Konstantstrom-Serienkreisen für Flugplatzbefeuerungsanlagen

Installations électriques pour l'éclairage et le balisage des aérodromes - Maintenance des circuits série à courant constant pour le balisage aéronautique au sol

La CEI 61821:2011 s'applique à la maintenance des circuits série à courant constant pour le balisage aéronautique au sol (AGL). Cette norme internationale: - couvre les circuits série à courant constant pour le balisage aéronautique au sol installé dans les aérodromes et les héliports; - se concentre sur la fourniture d'exigences en matière de sécurité pour la maintenance des circuits série à courant constant pour le balisage aéronautique au sol. L'existence d'une diversité de circuits série à courant constant pour balisage aéronautique au sol, possédant des caractéristiques et des paramètres différents d'un circuit à l'autre, est admise; - s'intéresse principalement à la sécurité des personnes et spécifie les règles et les principes fondamentaux liés à la maintenance des circuits série à courant constant pour le balisage aéronautique au sol; - ne s'applique pas aux circuits série primaires pour le balisage aéronautique au sol alimentés directement à partir d'une source à tension constante provenant du secteur; - ne s'applique pas à l'éclairage public des rues ou des routes, ou à toute autre installation requérant l'utilisation de circuits série à courant constant. Cette deuxième édition annule et remplace la première édition parue en 2002. Elle constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente: a) ajout de références dans les références normatives; b) ajout de notes dans les Articles 5, 6 et 7; c) modification des procédures de pré-travail dans le point e) du 7.2.2.

Električne inštalacije za razsvetljavo in radijske javljalnike na letališčih - Vzdrževanje zaporednih tokokrogov, napajanih s konstantnim tokom, za talno razsvetljavo letališč

Ta mednarodni standard se uporablja na področju vzdrževanja zaporednih tokokrogov, napajanih s konstantnim tokom, za talno razsvetljavo letališč (AGL). Ta mednarodni standard: – zajema zaporedne tokokroge, napajane s konstantnim tokom, za talno razsvetljavo letališč, nameščeno na letališčih in heliportih; – se osredotoča na zagotavljanje varnostnih zahtev za vzdrževanje zaporednih tokokrogov, napajanih s konstantnim tokom, za talno razsvetljavo letališč. Znano je, da obstajajo zaporedni tokokrogi, napajani s konstantnim tokom, za talno razsvetljavo letališč z različnimi projektnimi lastnostmi in parametri; – standard v glavnem obravnava varnost oseb z določanjem pravil in osnovnih načel za vzdrževanje zaporednih tokokrogov, napajanih s konstantnim tokom, za talno razsvetljavo letališč; – standard se ne uporablja za primarne zaporedne tokokroge za talno razsvetljavo letališč, ki se napajajo neposredno iz glavnega konstantnega napetostnega vira; – standard se ne uporablja za javno razsvetljavo ulic, obcestno razsvetljavo ali druge namestitve, ki zahtevajo uporabo zaporednih tokokrogov, napajanih s konstantnim tokom. Standard EN 61821:2011 glede na standard EN 61821:2003 vsebuje naslednje znatne tehnične spremembe: a) dodatne zveze s standardi na seznamu normativnih zvez s standardi; b) dodatne opombe v točkah 5, 6 in 7; c) spremembo preddelovnih postopkov v postavki e) točke 7.2.2.

General Information

Status
Published
Publication Date
24-Nov-2011
Current Stage
6060 - Document made available
Due Date
25-Nov-2011
Completion Date
25-Nov-2011

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SLOVENSKI STANDARD
SIST EN 61821:2012
01-marec-2012
1DGRPHãþD
SIST EN 61821:2003
(OHNWULþQHLQãWDODFLMH]DUD]VYHWOMDYRLQUDGLMVNHMDYOMDOQLNHQDOHWDOLãþLK
9]GUåHYDQMH]DSRUHGQLKWRNRNURJRYQDSDMDQLKVNRQVWDQWQLPWRNRP]DWDOQR
UD]VYHWOMDYROHWDOLãþ

Electrical installations for lighting and beaconing of aerodromes - Maintenance of

aeronautical ground lighting constant current series circuits
Elektrische Anlagen für Beleuchtung und Befeuerung von Flugplätzen - Wartung von
Konstantstrom-Serienstromkreisen für Flugplatzbefeuerungsanlagen

Installations électriques pour l'éclairage et le balisage des aérodromes - Maintenance

des circuits série à courant constant pour le balisage aéronautique au sol
Ta slovenski standard je istoveten z: EN 61821:2011
ICS:
29.140.50 Instalacijski sistemi za Lighting installation systems
razsvetljavo
93.120 *UDGQMDOHWDOLãþ Construction of airports
SIST EN 61821:2012 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 61821:2012
---------------------- Page: 2 ----------------------
SIST EN 61821:2012
EUROPEAN STANDARD
EN 61821
NORME EUROPÉENNE
November 2011
EUROPÄISCHE NORM
ICS 29.140.50; 93.120 Supersedes EN 61821:2003
English version
Electrical installations for lighting and beaconing of aerodromes -
Maintenance of aeronautical ground lighting constant current series
circuits
(IEC 61821:2011)

Installations électriques pour l'éclairage et Elektrische Anlagen für Beleuchtung und

le balisage des aérodromes - Befeuerung von Flugplätzen -
Maintenance des circuits série à courant Wartung von Konstantstrom-
constant pour le balisage aéronautique au Serienstromkreisen für
sol Flugplatzbefeuerungsanlagen
(CEI 61821:2011) (IEC 61821:2011)

This European Standard was approved by CENELEC on 2011-11-03. 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 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, Romania, Slovakia, Slovenia,

Spain, Sweden, Switzerland and the United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Management Centre: Avenue Marnix 17, B - 1000 Brussels

© 2011 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 61821:2011 E
---------------------- Page: 3 ----------------------
SIST EN 61821:2012
EN 61821:2011 - 2 -
Foreword

The text of document 97/153/FDIS, future edition 2 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 approved by CENELEC as EN 61821:2011.
The following dates are fixed:
(dop) 2012-08-03
• latest date by which the document has
to be implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2014-11-03
• latest date by which the national
standards conflicting with the
document have to be withdrawn
This document supersedes EN 61821:2003.

EN 61821:2011 includes the following significant technical changes with respect to EN 61821:2003:

a) addition of references to normative references;
b) addition of notes in Clauses 5, 6 and 7;
c) modification of pre-work procedures in item e) of 7.2.2.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such patent

rights.
Endorsement notice

The text of the International Standard IEC 61821:2011 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 61822 NOTE Harmonized as EN 61822.
IEC 61823 NOTE Harmonized as EN 61823.
---------------------- Page: 4 ----------------------
SIST EN 61821:2012
- 3 - EN 61821:2011
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 60903 - Live working - Gloves of insulating material EN 60903 -
---------------------- Page: 5 ----------------------
SIST EN 61821:2012
---------------------- Page: 6 ----------------------
SIST EN 61821:2012
IEC 61821
Edition 2.0 2011-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
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
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX U
ICS 29.140.50; 93.120 ISBN 978-2-88912-717-7
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 7 ----------------------
SIST EN 61821:2012
– 2 – 61821 © IEC:2011
CONTENTS

FOREWORD ........................................................................................................................... 3

INTRODUCTION ..................................................................................................................... 5

1 Scope ............................................................................................................................... 6

2 Normative references ....................................................................................................... 6

3 Terms and definitions ....................................................................................................... 6

4 Competence of persons .................................................................................................... 9

4.1 Objective ................................................................................................................. 9

4.2 Requirements .......................................................................................................... 9

5 Management of maintenance activities ............................................................................. 9

5.1 Objective ................................................................................................................. 9

5.2 Requirements .......................................................................................................... 9

5.2.1 Organizational roles and responsibilities ...................................................... 9

5.2.2 Use of contractors ..................................................................................... 10

5.2.3 Maintenance policy .................................................................................... 10

5.2.4 Maintenance procedures ........................................................................... 11

5.2.5 Admittance to AGL work areas .................................................................. 11

6 Safety requirements ....................................................................................................... 12

6.1 Objective ............................................................................................................... 12

6.2 Requirements ........................................................................................................ 12

6.2.1 Safety procedures ..................................................................................... 12

6.2.2 Live working .............................................................................................. 13

6.2.3 Safety checks ............................................................................................ 13

6.2.4 Tools and test equipment .......................................................................... 14

6.2.5 Safety equipment....................................................................................... 14

6.2.6 Personal protective equipment................................................................... 14

7 AGL maintenance procedures ......................................................................................... 14

7.1 Objective ............................................................................................................... 14

7.2 Requirements ........................................................................................................ 14

7.2.1 General ..................................................................................................... 14

7.2.2 Pre-work procedures ................................................................................. 14

7.2.3 AGL constant current series circuits .......................................................... 15

7.2.4 Cables ....................................................................................................... 15

7.2.5 Completion of work .................................................................................... 16

7.2.6 Records and documentation ...................................................................... 16

Annex A (informative) Maintenance organisation model ....................................................... 17

Bibliography .......................................................................................................................... 27

Figure A.1 – AGL maintenance organisation structural diagram ............................................ 18

Figure A.2 – AGL constant current series circuit maintenance model .................................... 24

Figure A.3 – Example of a permit-to-work/sanction-to-test sheet ........................................... 25

Figure A.4 – Example of a permit-to-work/sanction-to-test sheet ........................................... 26

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SIST EN 61821:2012
61821 © IEC:2011 –3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRICAL INSTALLATIONS FOR LIGHTING
AND BEACONING OF AERODROMES –
MAINTENANCE OF AERONAUTICAL GROUND LIGHTING
CONSTANT CURRENT SERIES CIRCUITS
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 itself does not provide any attestation of conformity. Independent certification bodies provide conformity

assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any

services carried out by independent certification bodies.

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 61821 has been prepared by IEC technical committee 97:

Electrical installations for lighting and beaconing of aerodromes.

This second edition cancels and replaces the first edition published in 2002. It is a technical

revision.

This edition includes the following significant technical changes with respect to the previous

edition:
a) addition of references to normative references;
b) addition of notes in Clauses 5, 6 and 7;
c) modification of pre-work procedures in item e) of 7.2.2.
---------------------- Page: 9 ----------------------
SIST EN 61821:2012
– 4 – 61821 © IEC:2011
The text of this standard is based on the following documents:
FDIS Report on voting
97/153/FDIS 97/154/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 2.

The committee has decided that the contents of this publication will remain unchanged until

the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data

related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
---------------------- Page: 10 ----------------------
SIST EN 61821:2012
61821 © IEC:2011 –5 –
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 minimize 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.
---------------------- Page: 11 ----------------------
SIST EN 61821:2012
– 6 – 61821 © IEC:2011
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 recognized 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, Live working – Gloves of insulating material
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
aerodrome authority

organization accountable for the operational safety and security of persons, aircraft

operations and facilities at an aerodrome

NOTE Temporally the occupational safety for third party personal, contracted for AGL work on non-operational

areas, can be delegated to the third party contractor if the evidence of professional skills, knowledge of the

behavior rules and the separation to the airport operation area is given and documented.

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

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SIST EN 61821:2012
61821 © IEC:2011 –7 –
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

organization 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]
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
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SIST EN 61821:2012
– 8 – 61821 © IEC:2011
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
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 electrical 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, testing or repairing of electrical equipment

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SIST EN 61821:2012
61821 © IEC:2011 –9 –
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.
5 Management of maintenance activities

NOTE Additional informative guidance material for management of maintenance activities is included in Annex A.

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 are addressed.
5.2 Requirements
5.2.1 Organizational 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;
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SIST EN 61821:2012
– 10 – 61821 © IEC:2011
• contingency working arrangements.
The content of this clause is a minimum requirement.

NOTE IEC/TS 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;
• 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 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 minimize 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.
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;

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SIST EN 61821:2012
61821 © IEC:2011 –11 –

• the return of operational facilities and movement areas when operationally necessary even though the works

may not be
...

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