IEC 60794-3-40:2008

Optical fibre cables - Part 3-40: Outdoor cables - Family specification for sewer cables and conduits for installation by blowing and/or pulling in non-man accessible storm and sanitary sewers

IEC 60794-3-40:2008 is part of IEC 60794 family specification that covers sewer cables and conduits for installation by blowing and/or pulling in non-man accessible storm and sanitary sewers, also applicable for man-accessible and lateral ones. Systems built with components covered by this standard are subject to the requirements of sectional specification IEC 60794-3.
This publication is to be read in conjunction with IEC 60794-1-1:2011, IEC 60794-1-2:2003 and IEC 60794-3:2001.

Câbles à fibres optiques - Partie 3-40: Câbles extérieurs - Spécification de famille pour les câbles en égouts et les conduites installés par soufflage et/ou tirage dans les évacuations d'eaux sanitaires et pluviales non accessibles par l'homme

La CEI 60794-3-40:2008 est une spécification de famille qui s'applique aux câbles en égouts et aux conduites, installés par soufflage et/ou tirage dans les évacuations d'eaux pluviales et sanitaires non accessibles par l'homme, elle s'applique également aux égouts et aux conduits secondaires accessibles par l'homme. Les systèmes intégrant des éléments couverts par la présente norme sont soumis aux exigences de la spécification intermédiaire CEI 60794-3.
Cette publication doit être lue conjointement avec la CEI 60794-1-1:2011, la CEI 60794-1-2:2003 et la CEI 60794-3:2001.

General Information

• Status: Published
• Publication Date: 07-Oct-2008
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 33.180.10 - Fibres and cables
• Technical Committee: SC 86A - Fibres and cables
• Drafting Committee: PT 60794-3-40 - TC 86/SC 86A/PT 60794-3-40
• Current Stage: DELPUB - Deleted Publication
• Start Date: 11-Jan-2019
• Completion Date: 27-Apr-2022

Relations

• Revised: IEC 60794-3-40:2022 - Optical fibre cables - Part 3-40: Outdoor cables - Family specification for cables for storm and sanitary sewers
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 60794-3-40
Edition 1.0 2008-10
INTERNATIONAL
STANDARD
Optical fibre cables –
Part 3-40: Outdoor cables – Family specification for sewer cables and conduits
for installation by blowing and/or pulling in non-man accessible storm and
sanitary sewers
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form

or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester.
If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication,

please contact the address below or your local IEC member National Committee for further information.

IEC Central Office
3, rue de Varembé
CH-1211 Geneva 20
Switzerland
Email: [e-mail]
Web: www.iec.ch
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
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IEC 60794-3-40
Edition 1.0 2008-10
INTERNATIONAL
STANDARD
Optical fibre cables –
Part 3-40: Outdoor cables – Family specification for sewer cables and conduits
for installation by blowing and/or pulling in non-man accessible storm and
sanitary sewers
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
W
ICS 33.180.10 ISBN 978-2-88910-295-2
– 2 – 60794-3-40 © IEC:2008(E)

CONTENTS
FOREWORD.4

1 Scope.6

2 Normative references .6

3 Symbols .7

4 Family specification for sewer cables and conduits for installation by blowing
and/or pulling in sewers (blank detail specification and minimum requirements) .8

4.1 Construction.8

4.1.1 General .8
4.1.2 Conduits.8
4.1.3 Sewer cables.8
4.1.4 Rodent protection .8
4.2 Optical fibres.9
4.2.1 Single-mode dispersion unshifted (B1.1) optical fibre .9
4.2.2 Single mode dispersion shifted (B2) optical fibre .9
4.2.3 Single mode non-zero dispersion (B4) optical fibre .10
4.2.4 Single mode (B6) optical fibre.10
4.2.5 Multimode fibres .10
4.3 Sewer cable constructions.11
4.3.1 Cable for installation within conduits (previously fixed to the sewer
wall) .11
4.3.2 Cable for direct installation into the sewer duct.12
4.3.3 Conduit construction.13
4.4 Installation and operating conditions .13
4.4.1 Tests applicable to cables/cable elements .13
4.4.2 Installation conditions .14
4.5 Mechanical and environmental tests.14
4.5.1 Conduits.14
4.5.2 Cable for installation within conduits (previously fixed to the sewer
wall) .17
4.5.3 Cables for direct installation into the sewer duct .21
Annex A (informative) Blank detail specification.25
Annex B (informative) OF cables for non-man accessible sewers.28
Annex C (informative) Examples of conduits and sewer cables .29

Annex D (informative) Examples of installation schemes.35

Figure C.1 – Dielectric optical fibre sewer cable.29
Figure C.2 – Dielectric optical fibre sewer cable.29
Figure C.3 – Optical fibre sewer cable within a conduit .30
Figure C.4 – Optical fibre sewer cable for direct installation – peripheral strength
members.31
Figure C.5 – Optical fibre sewer cable for direct installation – steel wire armouring .31
Figure C.6 – Optical fibre sewer cable for spanning – peripheral strength members.32
Figure C.7 – Optical fibre sewer cable for spanning – steel wire armouring.32
Figure C.8 – Optical fibre sewer cable for laying – aluminium tape.33
Figure C.9 – Optical fibre sewer cable for laying – corrugated steel .33

60794-3-40 © IEC:2008(E) – 3 –

Figure C.10 – Optical fibre sewer cable for laying – 2-layer-steel wire armouring.34

Figure D.1 – Conduit robotized installation.35

Figure D.2 – Spring loaded stainless-steel ring – conduit fastening.36

Figure D.3 – Schematic drawing robotized installation – Drilling.36

Figure D.4 – Schematic drawing – Spanning of optical fibre cables within sewers .37

Figure D.5 – Schematic drawing – laying on the ground of optical fibre cables within

sewers .37

Table 1 – Single-mode dispersion unshifted (B1.1) optical fibre .9

Table 2 – Single mode dispersion shifted (B2) optical fibre .9
Table 3 – Single mode non-zero dispersion (B4) optical fibre.10
Table 4 – Single mode (B6) optical fibre .10
Table 5 – Characteristics – Cable for installation within conduits (previously fixed to
the sewer wall) .11
Table 6 – Characteristics – Cable for direct installation into the sewer duct .12
Table 7 – Characteristics – Conduit construction .13
Table 8 – Tests applicable to cables/cable elements.13
Table 9 – Conduits – Tests applicable .14
Table 10 – Optical fibre cable – Tests applicable .17
Table 11 – Tests applicable .21
Table A.1 – Sewer optical fibre cable description – Within conduits .25
Table A.2 – Sewer optical fibre description – Direct installation .26
Table A.3 – Conduit description .27
Table B.1 – Characteristics for optical fibre cables within non-man accessible sewers.28

– 4 – 60794-3-40 © IEC:2008(E)

INTERNATIONAL ELECTROTECHNICAL COMMISSION

_____________
OPTICAL FIBRE CABLES –
Part 3-40: Outdoor cables –
Family specification for sewer cables and

conduits for installation by blowing and/or pulling

in non-man accessible 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 provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of

patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60794-3-40 Ed. 1 has been prepared by sub-committee 86A:
Fibres and cables, of IEC technical committee 86: Fibre optics.
This standard is to be used in conjunction with IEC 60794-1-1, IEV 60794-1-2 and
IEC 60794-3.
60794-3-40 © IEC:2008(E) – 5 –

The text of this standard is based on the following documents:

FDIS Report on voting
86A/1228/FDIS 86A/1241/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
...

IEC 60794-3-40 ®
Edition 1.0 2008-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Optical fibre cables –
Part 3-40: Outdoor cables – Family specification for sewer cables and conduits
for installation by blowing and/or pulling in non-man accessible storm and
sanitary sewers
Câbles à fibres optiques –
Partie 3-40: Câbles extérieurs – Spécification de famille pour les câbles en
égouts et les conduites installés par soufflage et/ou tirage dans les évacuations
d’eaux sanitaires et pluviales non accessibles par l’homme

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by
any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either IEC or
IEC's member National Committee in the country of the requester.
If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication,
please contact the address below or your local IEC member National Committee for further information.

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publication, utilisez les coordonnées ci-après ou contactez le Comité national de la CEI de votre pays de résidence.

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CH-1211 Geneva 20
Switzerland
Email: [e-mail]
Web: www.iec.ch
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigenda or an amendment might have been published.
 Catalogue of IEC publications: www.iec.ch/searchpub
The IEC on-line Catalogue enables you to search by a variety of criteria (reference number, text, technical committee,…).
It also gives information on projects, withdrawn and replaced publications.
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Stay up to date on all new IEC publications. Just Published details twice a month all new publications released. Available
on-line and also by email.
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The world's leading online dictionary of electronic and electrical terms containing more than 20 000 terms and definitions
in English and French, with equivalent terms in additional languages. Also known as the International Electrotechnical
Vocabulary online.
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IEC 60794-3-40 ®
Edition 1.0 2008-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Optical fibre cables –
Part 3-40: Outdoor cables – Family specification for sewer cables and conduits
for installation by blowing and/or pulling in non-man accessible storm and
sanitary sewers
Câbles à fibres optiques –
Partie 3-40: Câbles extérieurs – Spécification de famille pour les câbles en
égouts et les conduites installés par soufflage et/ou tirage dans les évacuations
d’eaux sanitaires et pluviales non accessibles par l’homme

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX W
ICS 33.180.10 ISBN 978-2-88912-748-1

– 2 – 60794-3-40  IEC:2008
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Symbols . 7
4 Family specification for sewer cables and conduits for installation by blowing
and/or pulling in sewers (blank detail specification and minimum requirements) . 8
4.1 Construction . 8
4.1.1 General . 8
4.1.2 Conduits . 8
4.1.3 Sewer cables . 8
4.1.4 Rodent protection . 8
4.2 Optical fibres . 9
4.2.1 Single-mode dispersion unshifted (B1.1) optical fibre . 9
4.2.2 Single mode dispersion shifted (B2) optical fibre . 9
4.2.3 Single mode non-zero dispersion (B4) optical fibre . 10
4.2.4 Single mode (B6) optical fibre . 10
4.2.5 Multimode fibres . 10
4.3 Sewer cable constructions . 11
4.3.1 Cable for installation within conduits (previously fixed to the sewer
wall) . 11
4.3.2 Cable for direct installation into the sewer duct . 12
4.3.3 Conduit construction . 13
4.4 Installation and operating conditions . 13
4.4.1 Tests applicable to cables/cable elements . 13
4.4.2 Installation conditions . 14
4.5 Mechanical and environmental tests . 14
4.5.1 Conduits . 14
4.5.2 Cable for installation within conduits (previously fixed to the sewer

wall) . 17
4.5.3 Cables for direct installation into the sewer duct . 21
Annex A (informative) Blank detail specification . 25
Annex B (informative) OF cables for non-man accessible sewers . 28
Annex C (informative) Examples of conduits and sewer cables . 29
Annex D (informative) Examples of installation schemes . 35

Figure C.1 – Dielectric optical fibre sewer cable. 29
Figure C.2 – Dielectric optical fibre sewer cable. 29
Figure C.3 – Optical fibre sewer cable within a conduit . 30
Figure C.4 – Optical fibre sewer cable for direct installation – peripheral strength
members. 31
Figure C.5 – Optical fibre sewer cable for direct installation – steel wire armouring . 31
Figure C.6 – Optical fibre sewer cable for spanning – peripheral strength members . 32
Figure C.7 – Optical fibre sewer cable for spanning – steel wire armouring . 32
Figure C.8 – Optical fibre sewer cable for laying – aluminium tape. 33
Figure C.9 – Optical fibre sewer cable for laying – corrugated steel . 33

60794-3-40  IEC:2008 – 3 –
Figure C.10 – Optical fibre sewer cable for laying – 2-layer-steel wire armouring . 34
Figure D.1 – Conduit robotized installation . 35
Figure D.2 – Spring loaded stainless-steel ring – conduit fastening . 36
Figure D.3 – Schematic drawing robotized installation – Drilling. 36
Figure D.4 – Schematic drawing – Spanning of optical fibre cables within sewers . 37
Figure D.5 – Schematic drawing – laying on the ground of optical fibre cables within
sewers . 37

Table 1 – Single-mode dispersion unshifted (B1.1) optical fibre . 9
Table 2 – Single mode dispersion shifted (B2) optical fibre . 9
Table 3 – Single mode non-zero dispersion (B4) optical fibre . 10
Table 4 – Single mode (B6) optical fibre . 10
Table 5 – Characteristics – Cable for installation within conduits (previously fixed to
the sewer wall) . 11
Table 6 – Characteristics – Cable for direct installation into the sewer duct . 12
Table 7 – Characteristics – Conduit construction . 13
Table 8 – Tests applicable to cables/cable elements . 13
Table 9 – Conduits – Tests applicable . 14
Table 10 – Optical fibre cable – Tests applicable . 17
Table 11 – Tests applicable . 21
Table A.1 – Sewer optical fibre cable description – Within conduits . 25
Table A.2 – Sewer optical fibre description – Direct installation . 26
Table A.3 – Conduit description . 27
Table B.1 – Characteristics for optical fibre cables within non-man accessible sewers . 28

– 4 – 60794-3-40  IEC:2008
INTERNATIONAL ELECTROTECHNICAL COMMISSION
_____________
OPTICAL FIBRE CABLES –
Part 3-40: Outdoor cables –
Family specification for sewer cables and
conduits for installation by blowing and/or pulling
in non-man accessible 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 part
...