Optical fibre cables - Part 3-40: Outdoor cables - Family specification for cables for storm and sanitary sewers (IEC 60794-3-40:2022)

This part of IEC 60794 is a family specification that covers sewer cables and conduits for installation by blowing and/ or pulling in man accessible and non-man accessible storm and sanitary sewers. Systems built with components covered by this standard are subject to the requirements of sectional specification IEC 60794-3.
Sewer cable and conduit constructions have to meet the different requirements of the sewer operating companies and/or associations regarding chemical, environmental, operational, cleaning and in general maintenance conditions.
Preferential applications, describing sewer cable characteristics versus methods of installation is reported in Annex A and Annex B for non-man accessible sewers.
Clause 5 describes characteristics of sewer cables and conduits for installation by blowing, pulling or other means in storm and sanitary sewers.
Detail specifications may be prepared on the basis of this family specification.
The parameters specified in this standard may be affected by measurement uncertainty arising either from measurement errors or calibration errors due to lack of suitable standards.
Acceptance criteria should be interpreted with respect to this consideration. The number of fibres tested is representative of the sewer cable and should be agreed between the customer and the supplier.

Lichtwellenleiterkabel - Teil 3-40: Außenkabel - Familienspezifikation für Kabel in Abwasserkanälen für die Verlegung durch Einblasen und/oder Einziehen in nicht zugänglichen Regenwasser- und Abwasserkanälen (IEC 60794-3-40:2022)

Câbles à fibres optiques - Partie 3-40: Câbles extérieurs - Spécification de famille pour les câbles destinés aux évacuations d’eaux sanitaires et pluviales (IEC 60794-3-40:2022)

IEC 60794-3-40:2022 s’applique aux câbles en égouts et aux conduits en vue de leur installation par soufflage et/ou tirage dans les évacuations d’eaux pluviales et sanitaires accessibles et non accessibles par l’homme. Les systèmes intégrant des éléments couverts par le présent document sont soumis aux exigences de la spécification intermédiaire IEC 60794-3. Il est nécessaire que les constructions des câbles en égouts et des conduits satisfassent aux différentes exigences d’ordre chimique, environnemental, fonctionnel et aux conditions générales en matière de nettoyage et de maintenance qui incombent aux entreprises et/ou aux organismes de maintenance des égouts. Les applications préférentielles, qui décrivent les caractéristiques des câbles en égouts en fonction des méthodes d’installation sont rapportées à l’Annexe A et l’Annexe B pour les égouts non accessibles par l’homme. L’Article 5 décrit les caractéristiques des câbles en égouts et des conduits en vue de leur installation par soufflage, tirage ou d’autres moyens dans des évacuations d’eaux pluviales et sanitaires. Les spécifications particulières peuvent être préparées sur la base de cette spécification de famille. Il importe d’interpréter les critères d’acceptation en conséquence. Le nombre de fibres soumises à l’essai est représentatif du câble en égouts et il fait l’objet d’un accord entre le client et le fournisseur. Cette seconde édition annule et remplace la première édition parue en 2008. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l’édition précédente: a) le présent document suit la nouvelle structure relative aux spécifications de famille. Les symbols et abréviations ont été inclus à l’Article 3, et l’Article 4 s’intitule désormais Exigences générales, et est composé de 4.1 Fibres optiques, 4.2 Elément de câble et 4.3 Construction d’un câble à fibres optiques; b) l’Annexe D a été supprimée étant donné qu’elle fait partie intégrante de l’IEC TR 62691; c) le présent document a été simplifié en s’appuyant sur des références à l’IEC 60794-1-1, l’IEC 60793-2, l’IEC 60794-3 et la série IEC 60794-1-2x; d) la tolérance en matière de déformation de la fibre pour les essais de traction a été mise à jour; e) le Tableau 5, le Tableau 6 et le Tableau 7, Caractéristiques, ont été déplacés à l’Annexe A (informative).

Optični kabli - 3-40. del: Kabli za zunanjo uporabo - Skupinska specifikacija za kable, namenjene za meteorne in sanitarne kanale (IEC 60794-3-40:2022)

General Information

Status
Published
Publication Date
23-Jun-2022
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
17-Jun-2022
Due Date
22-Aug-2022
Completion Date
24-Jun-2022

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SLOVENSKI STANDARD
SIST EN IEC 60794-3-40:2022
01-september-2022
Nadomešča:
SIST EN 60794-3-40:2009
Optični kabli - 3-40. del: Kabli za zunanjo uporabo - Skupinska specifikacija za
kable, namenjene za meteorne in sanitarne kanale (IEC 60794-3-40:2022)

Optical fibre cables - Part 3-40: Outdoor cables - Family specification for cables for storm

and sanitary sewers (IEC 60794-3-40:2022)

Lichtwellenleiterkabel - Teil 3-40: Außenkabel - Familienspezifikation für Kabel in

Abwasserkanälen für die Verlegung durch Einblasen und/oder Einziehen in nicht
zugänglichen Regenwasser- und Abwasserkanälen (IEC 60794-3-40:2022)

Câbles à fibres optiques - Partie 3-40: Câbles extérieurs - Spécification de famille pour

les câbles destinés aux évacuations d’eaux sanitaires et pluviales (IEC 60794-3-
40:2022)
Ta slovenski standard je istoveten z: EN IEC 60794-3-40:2022
ICS:
33.180.10 (Optična) vlakna in kabli Fibres and cables
SIST EN IEC 60794-3-40:2022 en

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

---------------------- Page: 1 ----------------------
SIST EN IEC 60794-3-40:2022
---------------------- Page: 2 ----------------------
SIST EN IEC 60794-3-40:2022
EUROPEAN STANDARD EN IEC 60794-3-40
NORME EUROPÉENNE
EUROPÄISCHE NORM June 2022
ICS 33.180.10 Supersedes EN 60794-3-40:2008
English Version
Optical fibre cables - Part 3-40: Outdoor cables - Family
specification for cables for storm and sanitary sewers
(IEC 60794-3-40:2022)

Câbles à fibres optiques - Partie 3-40: Câbles extérieurs - Lichtwellenleiterkabel - Teil 3-40: Außenkabel -

Spécification de famille pour les câbles destinés aux Familienspezifikation für Kabel in Regen- und

évacuations d'eaux sanitaires et pluviales Abwasserkanälen
(IEC 60794-3-40:2022) (IEC 60794-3-40:2022)

This European Standard was approved by CENELEC on 2022-06-01. 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 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,

Turkey 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

© 2022 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN IEC 60794-3-40:2022 E
---------------------- Page: 3 ----------------------
SIST EN IEC 60794-3-40:2022
EN IEC 60794-3-40:2022 (E)
European foreword

The text of document 86A/2189/FDIS, future edition 2 of IEC 60794-3-40, prepared by SC 86A "Fibres

and cables" of IEC/TC 86 "Fibre optics" was submitted to the IEC-CENELEC parallel vote and

approved by CENELEC as EN IEC 60794-3-40:2022.
The following dates are fixed:

• latest date by which the document has to be implemented at national (dop) 2023-03-01

level by publication of an identical national standard or by endorsement

• latest date by which the national standards conflicting with the (dow) 2025-06-01

document have to be withdrawn

This document supersedes EN 60794-3-40:2008 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.

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 60794-3-40:2022 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 standards

indicated:
IEC 60794-3-10 NOTE Harmonized as EN 60794-3-10
IEC 60794-3-20 NOTE Harmonized as EN 60794-3-20
IEC 60794-4 NOTE Harmonized as EN IEC 60794-4
IEC 62305-1 NOTE Harmonized as EN 62305-1
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SIST EN IEC 60794-3-40:2022
EN IEC 60794-3-40:2022 (E)
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.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60793-2 - Optical fibres - Part 2: Product specifications - -
IEC 60794-1-1 - Optical fibre cables - Part 1-1: Generic EN 60794-1-1 -
specification - General
IEC 60794-1-2 - Optical fibre cables - Part 1-2: Generic EN IEC 60794-1-2 -
specification - Basic optical cable test
procedures - General guidance
IEC 60794-1-21 - Optical fibre cables - Part 1-21: Generic EN 60794-1-21 -
specification - Basic optical cable test
procedures - Mechanical tests methods
IEC 60794-1-22 - Optical fibre cables - Part 1-22: Generic EN IEC 60794-1-22 -
specification - Basic optical cable test
procedures - Environmental test methods
IEC 60794-1-23 - Optical fibre cables - Part 1-23: Generic EN IEC 60794-1-23 -
specification - Basic optical cable test
procedures - Cable element test methods

IEC 60794-1-215 - Optical fibre cables - Part 1-215: Generic EN IEC 60794-1-215 -

specification - Basic optical cable test
procedures - Environmental test methods -
Cable external freezing test, Method F15
IEC 60794-3 2014 Optical fibre cables - Part 3: Outdoor cables EN 60794-3 2015
- Sectional specification
IEC 60794-5 - Optical fibre cables - Part 5: Sectional EN 60794-5 -
specification - Microduct cabling for
installation by blowing
IEC 60794-5-10 - Optical fibre cables - Part 5-10: Family EN 60794-5-10 -
specification - Outdoor microduct optical
fibre cables, microducts and protected
microducts for installation by blowing
---------------------- Page: 5 ----------------------
SIST EN IEC 60794-3-40:2022
EN IEC 60794-3-40:2022 (E)
Publication Year Title EN/HD Year
IEC 60811-501 - Electric and optical fibre cables - Test EN 60811-501 -
methods for non-metallic materials - Part
501: Mechanical tests - Tests for
determining the mechanical properties of
insulating and sheathing compounds
IEC/TR 62362 2020 Selection of optical fibre cable specifications - -
relative to mechanical, ingress, climatic or
electromagnetic characteristics - Guidance
---------------------- Page: 6 ----------------------
SIST EN IEC 60794-3-40:2022
IEC 60794-3-40
Edition 2.0 2022-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Optical fibre cables –
Part 3-40: Outdoor cables – Family specification for cables for storm and
sanitary sewers
Câbles à fibres optiques –

Partie 3-40: Câbles extérieurs – Spécification de famille pour les câbles destinés

aux évacuations d’eaux sanitaires et pluviales
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.180.10 ISBN 978-2-8322-1101-0

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 7 ----------------------
SIST EN IEC 60794-3-40:2022
– 2 – IEC 60794-3-40:2022 © IEC 2022
CONTENTS

FOREWORD ........................................................................................................................... 4

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

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

3 Terms, definitions, symbols and abbreviated terms .......................................................... 7

4 General requirements ...................................................................................................... 7

4.1 Optical fibres .......................................................................................................... 7

4.2 Cable element ......................................................................................................... 7

4.3 Optical fibre cable and conduit construction ............................................................ 7

4.3.1 General ........................................................................................................... 7

4.3.2 Conduits .......................................................................................................... 8

4.3.3 Sewer cables ................................................................................................... 8

4.3.4 Rodent protection ............................................................................................ 8

5 Details of family requirements and test conditions for optical fibre cable and

conduit ............................................................................................................................ 8

5.1 Cable for installation within conduits (previously fixed to the sewer wall) ................ 8

5.2 Cable for direct installation into the sewer duct ....................................................... 8

5.3 Conduit construction ............................................................................................... 8

5.4 Operating conditions ............................................................................................... 9

5.5 Mechanical and environmental tests ....................................................................... 9

5.5.1 Conduits .......................................................................................................... 9

5.5.2 Cable for installation within conduits (previously fixed to the sewer wall) ....... 12

5.5.3 Cables for direct installation into the sewer duct ............................................ 17

Annex A (informative) Blank detail specification – Sewer cables description ........................ 24

A.1 Conduit description ............................................................................................... 24

A.2 Cable for installation within conduits (previously fixed to the sewer wall) .............. 25

A.3 Cables for direct installation into the sewer duct ................................................... 26

Annex B (informative) Cables for non-man accessible sewers .............................................. 27

Annex C (informative) Examples of conduits and sewer cables ............................................ 28

C.1 Loose tube cables for installation within conduits .................................................. 28

C.1.1 Dielectric sewer cables .................................................................................. 28

C.1.2 Sewer cable installed within a conduit ........................................................... 28

C.2 Loose tube cables for direct installation into the sewer duct .................................. 29

C.2.1 Cables to be screwed to the sewer inner wall ................................................ 29

C.2.2 Cables for spanning between manholes, similarly to aerial cables ................. 30

C.2.3 Cables for laying on the ground of the sewer ................................................. 31

Bibliography .......................................................................................................................... 32

Figure C.1 – Dielectric optical fibre sewer cable .................................................................... 28

Figure C.2 – Dielectric optical fibre sewer cable .................................................................... 28

Figure C.3 – Optical fibre sewer cable within a conduit ......................................................... 29

Figure C.4 – Optical fibre sewer cable for direct installation – Peripheral strength

members ............................................................................................................................... 29

Figure C.5 – Optical fibre sewer cable for direct installation – Steel wire armouring .............. 30

Figure C.6 – Optical fibre sewer cable for spanning – Peripheral strength members ............. 30

Figure C.7 – Optical fibre sewer cable for spanning – Steel wire armouring .......................... 30

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SIST EN IEC 60794-3-40:2022
IEC 60794-3-40:2022 © IEC 2022 – 3 –

Figure C.8 – Optical fibre sewer cable for laying – Aluminium tape ....................................... 31

Figure C.9 – Optical fibre sewer cable for laying – Corrugated steel ..................................... 31

Figure C.10 – Optical fibre sewer cable for laying – 2-layer-steel wire armouring .................. 31

Table 1 – Conduit tests applicable .......................................................................................... 9

Table 2 – Optical fibre cable – Tests applicable .................................................................... 13

Table 3 – Tests applicable .................................................................................................... 18

Table A.1 – Conduit description ............................................................................................ 24

Table A.2 – Sewer optical fibre cable description – Within conduits ...................................... 25

Table A.3 – Sewer optical fibre cable description – Direct installation ................................... 26

Table B.1 – Characteristics for optical fibre cables within non-man accessible sewers .......... 27

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SIST EN IEC 60794-3-40:2022
– 4 – IEC 60794-3-40:2022 © IEC 2022
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
OPTICAL FIBRE CABLES –
Part 3-40: Outdoor cables –
Family specification for cables for storm and sanitary sewers
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.

IEC 60794-3-40 has been prepared by subcommittee 86A: Fibres and cables, of IEC technical

committee 86: Fibre optics. It is an International Standard.

This second edition cancels and replaces the first edition published in 2008. This edition

constitutes a technical revision.

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

edition:

a) this document follows the new structure for family specifications: symbols and abbreviations

were included in Clause 3, and Clause 4 became the General requirements with 4.1 Optical

fibres, 4.2 Cable element and 4.3 Optical fibre cable construction;
b) Annex D has been removed as it is part of IEC TR 62691;

c) this document has been streamlined by cross-referencing IEC 60794-1-1, IEC 60793-2,

IEC 60794-3 and the IEC 60794-1-2x series;
d) the fibre strain allowance for tensile tests was updated;
---------------------- Page: 10 ----------------------
SIST EN IEC 60794-3-40:2022
IEC 60794-3-40:2022 © IEC 2022 – 5 –

e) characteristics Table 5, Table 6, Table 7 were moved to the Annex A (informative).

The text of this International Standard is based on the following documents:
Draft Report on voting
86A/2189/FDIS 86A/2191/RVD

Full information on the voting for its approval can be found in the report on voting indicated in

the above table.
The language used for the development of this International Standard is English.

This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in

accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available

at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are

described in greater detail at www.iec.ch/standardsdev/publications.

A list of all parts in the IEC 60794 series, published under the general title Optical fibre cables,

can be found on the IEC website.

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

stability date indicated on the IEC website under webstore.iec.ch in the data related to the

specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.

IMPORTANT – The "colour inside" logo on the cover page of this document indicates

that it contains colours which are considered to be useful for the correct understanding

of its contents. Users should therefore print this document using a colour printer.

---------------------- Page: 11 ----------------------
SIST EN IEC 60794-3-40:2022
– 6 – IEC 60794-3-40:2022 © IEC 2022
OPTICAL FIBRE CABLES –
Part 3-40: Outdoor cables –
Family specification for cables for storm and sanitary sewers
1 Scope

This part of IEC 60794 is a family specification that covers sewer cables and conduits for

installation by blowing and/or pulling in man accessible and non-man accessible storm and

sanitary sewers. Systems built with components covered by this document are subject to the

requirements of sectional specification IEC 60794-3.

Sewer cable and conduit constructions need to meet the different requirements of the sewer

operating companies and/or associations regarding chemical, environmental, operational,

cleaning and in general maintenance conditions.

Preferential applications, describing sewer cable characteristics versus methods of installation

is reported in Annex A and Annex B for non-man accessible sewers.

escribes characteristics of sewer cables and conduits for installation by blowing,

Clause 5 d
pulling or other means in storm and sanitary sewers.
Detail specifications can be prepared on the basis of this family specification.

It is important that acceptance criteria are interpreted with respect to this consideration. The

number of fibres tested is representative of the sewer cable and is agreed between the customer

and the supplier.
2 Normative references

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.
IEC 60793-2, Optical fibres – Part 2: Product specifications – General
IEC 60794-1-1, Optical fibre cables – Part 1-1: Generic specification – General

IEC 60794-1-2, Optical fibre cables – Part 1-2: Generic specification – Basic optical cable test

procedures – General guidance

IEC 60794-1-21, Optical fibre cables – Part 1-21: Generic specification – Basic optical cable

test procedures – Mechanical tests methods

IEC 60794-1-22, Optical fibre cables – Part 1-22: Generic specification – Basic optical cable

test procedures – Environmental tests methods

IEC 60794-1-23, Optical fibre cables – Part 1-23: Generic specification – Basic optical cable

test procedures – Cable element test methods

IEC 60794-1-215, Optical fibre cables – Part 1-215: Generic specification – Basic optical cable

test procedures – Environmental test methods – Cable external freezing test, Method F15

---------------------- Page: 12 ----------------------
SIST EN IEC 60794-3-40:2022
IEC 60794-3-40:2022 © IEC 2022 – 7 –

IEC 60794-3:2014, Optical fibre cables – Part 3: Outdoor cables – Sectional specification

IEC 60794-5, Optical fibre cables – Part 5: Sectional specification – Microduct cabling for

installation by blowing

IEC 60794-5-10, Optical fibre cables – Part 5-10: Family specification – Outdoor microduct

optical fibre cables, microducts and protected microducts for installation by blowing

IEC 60811-501, Electric and optical fibre cables – Test methods for non-metallic materials –

Part 501: Mechanical tests – Tests for determining the mechanical properties of insulating and

sheathing compounds

IEC TR 62362:2020, Selection of optical fibre cable specifications relative to mechanical,

ingress, climatic or electromagnetic characteristics – Guidance
3 Terms, definitions, symbols and abbreviated terms

For the purposes of this document, the terms, definitions, symbols and abbreviated terms given

in IEC 60794-1-1 apply.

ISO and IEC maintain terminological databases for use in standardization at the following

addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
4 General requirements
4.1 Optical fibres

The optical fibre shall conform to the requirements of IEC 60793-2. The fibre type shall be

agreed between the customer and supplier. The cabled fibre shall conform to IEC 60794-3.

4.2 Cable element
The cable elements shall conform to IEC 60794-3.
4.3 Optical fibre cable and conduit construction
4.3.1 General

In addition to the constructional requirements of sectional specification IEC 60794-3, the

following considerations apply to the sewer cables and/or conduits.

The tests of this specification are intended to assess the performance of cables and conduits,

as manufactured and under agreed ageing and performance-limit tests. These tests are not

intended to define end-of-life performance. See IEC 60794-3:2014, 6.1.

The materials in the cable or conduit shall not present a health hazard within its intended use.

The clamping systems and accessories associated with cables and conduits of this document

are not specified herein. Such parts shall be agreed between the customer and the installer

depending on the installation technique.
Annex C shows examples of conduits and sewer cables.
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SIST EN IEC 60794-3-40:2022
– 8 – IEC 60794-3-40:2022 © IEC 2022
4.3.2 Conduits

If used, conduits shall conform to the installation and system design considerations of 4.3.3.

Conduits shall be able to resist pressure differences needed for installation by blowing and

outside pressure due to sewer cleaning operations. Conduits shall be circular and, if needed,

corrugated in cross-section throughout their length. The material shall withstand all possible

chemical attacks by the sewer liquid itself. Such chemicals hazards shall be agreed between

customer and supplier as well as the geometric dimensions, for example inner- and outer-

diameter, overall minimum wall thickness, of the conduit.
NOTE For instance stainless steel conduits have shown reliable performance.
4.3.3 Sewer cables

A sewer cable in accordance to this document should be suitable for installation in man

accessible storm and sanitary sewers and non-man accessible sewers and lateral sewer

systems, by installation methods as agreed between customer and supplier. Common
installation methods include

– blowing and/or pulling into a conduit, previously fixed to the sewer wall or, for laterals,

placed in between the lateral sewer wall and the in-liner system, and

– direct installation into the sewer duct, according to the following applications:

• drilling and screwing to the inner wall;
• spanning between manholes, etc. similarly to aerial cables;
• laying on the ground of the sewer.

The size and installation of the sewer cable shall be such that it does not restrict the flow of

sewer fluid or create obstacles to flow of any debris within the sewer pipe, as agreed between

customer and supplier.

Sewer cables installed without conduit into sewer systems shall be so constructed to withstand

chemical attacks by the sewer liquid. Such chemical hazards shall be agreed between customer

and supplier, using 5.5.3.3.9 as guidance.
4.3.4 Rodent protection

Rodent protection is generally needed but there is presently no standard test to measure the

level of rodent protection. Rodent protection can be provided by the cable or by the duct.

5 Details of family requirements and test conditions for optical fibre cable and
conduit
5.1 Cable for installation within conduits (previously fixed to the sewer wall)

The cable construction shall confirm to IEC 60794-3, IEC 60794-5 or IEC 60794-5-10, as

appropriate.
5.2 Cable for direct installation into the sewer duct
The cable construction shall confirm to IEC 60794-3.
5.3 Conduit construction

The conduit construction shall conform to the performance required for the sewer environment

as compatible with the performance intent of cables of IEC 60794-3 and of IEC 60794-5 and

IEC 60794-5-10 as applicable to microducts. Specific attributes to be considered in conduit

construction are:
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SIST EN IEC 60794-3-40:2022
IEC 60794-3-40:2022 © IEC 2022 – 9 –
• materials;
• conduit dimensions – inner and outer diameter;
• moisture barrier types (if used) – materials, metallic tapes, etc.;

• for corrugated conduit (metallic) – metal tape thickness, corrugation depth and pitch, overlap

requirements;
• for inner tubes (if used) – tube materials, tube dimensions.
The performance attributes shall be agreed between customer and supplier.
5.4 Operating conditions
The ope
...

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