SIST EN 60794-3-40:2009

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)

This part of IEC 60794 is a 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. 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 4 describes a blank detail specification for sewer cables and conduits for installation by blowing and/or pulling in storm and sanitary sewers. It incorporates some minimum requirements.
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 60794-3-40:2008)

Câbles à fibres optiques - Partie 3-40: Câbles extérieurs - Spécification de famille relative aux câbles et conduits cheminant dans les égouts destinés à être installés par soufflage et/ou tirage dans les conduites d'eaux usées pluviales et sanitaires inaccessibles (CEI 60794-3-40:2008)

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.

Optični kabli - 3-40. del: Kabli za zunanjo uporabo - Skupinska specifikacija za kanalizacijske kable in kanale za montažo z vpihavanjem oziroma vlečenjem v meteorne in sanitarne kanale, nedostopne za človeka (IEC 60794-3-40:2008)

General Information

• Status: Published
• Publication Date: 23-Dec-2008
• ICS: 33.180.10 - Fibres and cables
• Technical Committee: MOC - Mobile Communications
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 05-Dec-2008
• Due Date: 09-Feb-2009
• Completion Date: 24-Dec-2008
• Ref Project: EN 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

Relations

• Replaced By: SIST EN 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)
• Effective Date: 07-Jun-2022
• Revised: SIST EN 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)
• Effective Date: 19-Feb-2019

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 60794-3-40:2009
01-februar-2009
2SWLþQLNDEOLGHO.DEOL]D]XQDQMRXSRUDER6NXSLQVNDVSHFLILNDFLMD]D
NDQDOL]DFLMVNHNDEOHLQNDQDOH]DPRQWDåR]YSLKDYDQMHPR]LURPDYOHþHQMHPY
PHWHRUQHLQVDQLWDUQHNDQDOHQHGRVWRSQH]DþORYHND,(&
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)
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 60794-3-40:2008)
Câbles à fibres optiques - Partie 3-40: Câbles extérieurs - Spécification de famille
relative aux câbles et conduits cheminant dans les égouts destinés à être installés par
soufflage et/ou tirage dans les conduites d'eaux usées pluviales et sanitaires
inaccessibles (CEI 60794-3-40:2008)
Ta slovenski standard je istoveten z: EN 60794-3-40:2008
ICS:
33.180.10 2SWLþQDYODNQDLQNDEOL Fibres and cables
SIST EN 60794-3-40:2009 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------

SIST EN 60794-3-40:2009

---------------------- Page: 2 ----------------------

SIST EN 60794-3-40:2009

EUROPEAN STANDARD
EN 60794-3-40

NORME EUROPÉENNE
December 2008
EUROPÄISCHE NORM

ICS 33.180.10


English version


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)

Câbles à fibres optiques -  Lichtwellenleiterkabel -
Partie 3-40: Câbles extérieurs - Teil 3-40: Außenkabel -
Spécification de famille Familienspezifikation
relative aux câbles et conduits für Kabel in Abwasserkanälen
cheminant dans les égouts destinés für die Verlegung durch Einblasen
à être installés par soufflage et/ou tirage und/oder Einziehen in nicht zugänglichen
dans les conduites d'eaux usées pluviales Regenwasser- und Abwasserkanälen
et sanitaires inaccessibles (IEC 60794-3-40:2008)
(CEI 60794-3-40:2008)


This European Standard was approved by CENELEC on 2008-11-01. CENELEC members are bound to comply
with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard
the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and notified
to the Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, 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

Central Secretariat: rue de Stassart 35, B - 1050 Brussels


© 2008 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60794-3-40:2008 E

---------------------- Page: 3 ----------------------

SIST EN 60794-3-40:2009
EN 60794-3-40:2008 - 2 -
Foreword
The text of document 86A/1228/FDIS, future edition 1 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 was
approved by CENELEC as EN 60794-3-40 on 2008-11-01.
This standard is to be used in conjunction with EN 60794-1-1, EN 60794-1-2 and EN 60794-3.
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) 2009-08-02
– latest date by which the national standards conflicting
(dow) 2011-11-01
with the EN have to be withdrawn
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 60794-3-40:2008 was approved by CENELEC as a European
Standard without any modification.
__________

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SIST EN 60794-3-40:2009
- 3 - EN 60794-3-40:2008
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 60304 1982 Standard colours for insulation for HD 402 S2 1984
low-frequency cables and wires


1) 2)
IEC 60793-1-20 - Optical fibres - EN 60793-1-20 2002
Part 1-20: Measurement methods and test
procedures - Fibre geometry


1) 2)
IEC 60793-1-40 - Optical fibres - EN 60793-1-40 2003
(mod) Part 1-40: Measurement methods and test
procedures - Attenuation


1) 2)
IEC 60793-1-44 - Optical fibres - EN 60793-1-44 2002
Part 1-44: Measurement methods and test
procedures - Cut-off wavelength


1) 2)
IEC 60793-2 - Optical fibres - EN 60793-2 2008
Part 2: Product specifications - General


1) 2)
IEC 60793-2-50 - Optical fibres - EN 60793-2-50 2008
Part 2-50: Product specifications - Sectional
specification for class B single-mode fibres


1) 2)
IEC 60794-1-1 - Optical fibre cables - EN 60794-1-1 2002
Part 1-1: Generic specification - General


1) 2)
IEC 60794-1-2 - Optical fibre cables - EN 60794-1-2 2003
Part 1-2: Generic specification - Basic optical
cable test procedures


1) 2)
IEC 60794-3 - Optical fibre cables - EN 60794-3 2002
Part 3: Sectional specification - Outdoor
cables


1) 2)
IEC 60794-3-10 - Optical fibre cables - EN 60794-3-10 2002
(mod) Part 3-10: Outdoor cables - Family
specification for duct and directly buried
optical telecommunication cables


IEC 60811-1-1 1993 Insulating and sheathing materials of electric EN 60811-1-1 1995
and optical cables - Common test methods -
Part 1-1: General application - Measurement
of thickness and overall dimensions - Tests for
determining the mechanical properties



1)
Undated reference.
2)
Valid edition at date of issue.

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SIST EN 60794-3-40:2009
EN 60794-3-40:2008 - 4 -
Publication Year Title EN/HD Year

IEC 60811-5-1 1990 Insulating and sheathing materials of electric EN 60811-5-1 1999
(mod) and optical cables - Common test methods -
Part 5-1: Methods specific to filling
compounds - Drop point - Separation of oil -
Lower temperature brittleness - Total acid
number - Absence of corrosive components -
Permittivity at 23 °C - D.C. resistivity at 23 °C
and 100 °C

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SIST EN 60794-3-40:2009
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 2-8318-1002-4
® Registered trademark of the International Electrotechnical Commission

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SIST EN 60794-3-40:2009
– 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

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SIST EN 60794-3-40:2009
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

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SIST EN 60794-3-40:2009
– 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.

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SIST EN 60794-3-40:2009
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 publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts of 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 publication will remain unchanged until
the maintenance result 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.
A bilingual version of this publication may be issued at a later date.

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SIST EN 60794-3-40:2009
– 6 – 60794-3-40 © IEC:2008(E)
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



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 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.
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 4 describes a blank detail specification for sewer cables and conduits for installation
by blowing and/or pulling in storm and sanitary sewers. It incorporates some minimum
requirements.
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.
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 60304:1982, Standard colours for insulation for low-frequency cables and wires
IEC 60793-1-20, Optical fibres – Part 1-20: Measurement methods and test procedures –
Fibre geometry
IEC 60793-1-40, Optical fibres – Part 1-40: Measurement methods and test procedures –
Attenuation
IEC 60793-1-44, Optical fibres – Part 1-44: Measurement methods and test procedures – Cut-
off wavelength
IEC 60793-2, Optical fibres – Part 2: Product specifications– General

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SIST EN 60794-3-40:2009
60794-3-40 © IEC:2008(E) – 7 –
IEC 60793-2-50, Optical fibres – Part 2-50: Product specifications – Sectional specification for
class B single-mode fibres
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
IEC 60794-3, Optical fibre cables – Part 3: Sectional specification – Outdoor cables
IEC 60794-3-10, Optical fibre cables – Part 3-10: Outdoor cables – Family specification for
duct and directly buried optical telecommunication cables
IEC 60811-1-1:1993, Common test methods for insulating and sheathing materials of electric
cables and optical cables – Part 1-1: Methods for general application – Measurement of
thickness and overall dimensions – Tests for determining the mechanical properties
IEC 60811-5-1:1990, Insulating and sheathing materials of electric and optical cables –
Common test methods – Part 5-1: Methods specific to filling compounds – Drop point –
Separation of oil – Lower temperature brittleness – Total acid number – Absence of corrosive
components – Permittivity at 23 °C – DC resistivity at 23 °C and 100 °C
3 Symbols
For the purposes of this document, the following symbols apply.
APL Aluminium/polyethylene laminate
SPL Steel/polyethylene laminate
λ cabled fibre cut-off wavelength
CC
d nominal outer diameter of the sewer cable
d nominal outer diameter of the conduit
c
DS detail specification
n x d a value times cable outer diameter used for bends, mandrels, etc.
T threshold tensile load below which no attenuation and/or fibre strain increase should
O
occur in the tensile performance test
T the acceptable amount of short-term tensile load that can be applied to the cable
M
without permanent degradation of the characteristics of the fibres in the tensile
performance test
T temperature cycling test low-temperature limit according to IEC 60794-1-2, method Fl
A1
T temperature cycling test low-temperature limit according to IEC 60794-1-2, method Fl
A2
T temperature cycling test high-temperature limit according to IEC 60794-1-2, method Fl
B1
T temperature cycling test high-temperature limit according to IEC 60794-1-2, method Fl
B2
t temperature cycling dwell time
1

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SIST EN 60794-3-40:2009
– 8 – 60794-3-40 © IEC:2008(E)
4 Family specification for sewer cables and conduits for installation by
blowing and/or pulling in sewers (blank detail specification and minimum
requirements)
4.1 Construction
4.1.1 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 sewer cables and/or conduits shall be designed and manufactured for an expected
operating lifetime of at least 15 years. It shall be possible to install or remove the cable in or
from the sewer throughout the operational lifetime. Upon removal of the cable or conduit, no
remnants which would snag normal sewage debris or which would affect laminar sewage flow
shall remain. The materials in the sewer cable and/or as well as accessories including fixing
elements and conduits shall not present a health hazard within its intended use.
4.1.2 Conduits
In case of use, the conduits with outer nominal diameters ranging from xx mm to yy mm shall
be able to resist pressure differences needed for installation by blowing. They 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, as for instance the stainless
steel type 1.4401 (X5CrNiMo17-12-2), 1.4571 (X6CrNiMoTi17-12-2), AISI 316L). Inner- and
outer-diameter and overall minimum wall thickness shall be specified.
4.1.3 Sewer cables
A sewer cable in accordance to this specification should be suitable for installation in non-
man accessible storm and sanitary sewers by the following installation methods, also
applicable for man-accessible sewers and for lateral sewer systems:
– 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;
– 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 attenuation of the installed cable at the operational wavelength(s) shall not exceed values
agreed between the customer and the supplier.
There shall be no fibre splice in a delivery length unless otherwise agreed by the customer
and the supplier.
It shall be possible to identify each individual fibre throughout the length of the sewer cable.
4.1.4 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.
Tests and requirements are under consideration.

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SIST EN 60794-3-40:2009
60794-3-40 © IEC:2008(E) – 9 –
4.2 Optical fibres
4.2.1 Single-mode dispersion unshifted (B1.1) optical fibre
Table 1 – Single-mode dispersion unshifted (B1.1) optical fibre
Characteristics IEC 60794-3 Family Test methods Remarks
Clause/subclause requirements
(9) (10) (11) (12) (13)
Uncabled optical fibre 5 IEC 60793-2-50
Attenuation coefficient 5.2.1 According to DS IEC 60793-1-40,
(cabled fibres) method A, B or C
at 1 310 nm ≤ 0,40 dB/km
at 1 550 nm and
≤ 0,35 dB/km
1
at 1 625 nm . ≤ 0,40 dB/km
Attenuation discontinuities 5.2.2 ≤ 0,10 dB IEC 60793-1-40,
at 1 310 and 1 550 nm
method C
Cabled fibre cut-off 5.3 λCC < λ IEC 60793-1-44,
wavelength operational
method B
Fibre colouring 5.4 IEC 60304 Visual inspection
Outer diameter including 8.2.1.1 IEC 60793-2 IEC 60793-1-20,
colouring
method D

4.2.2 Single mode dispersion shifted (B2) optical fibre
Table 2 – Single mode dispersion shifted (B2) optical fibre
Characteristics IEC 60794-3 Family Test methods Remarks
Clause/subclause requirements
(9) (10) (11) (12) (13)
Uncabled optical fibre 5.1 IEC 60793-2
Attenuation coefficient 5.2.1 According to DS IEC 60793-1-40,
(cabled fibres)  method A, B or C

at 1 550 nm 5.2.1
≤ 0,35 dB/km


Attenuation discontinuities 5.2.2 IEC 60793-1-40,
≤ 0,10 dB/km
at 1 550 nm method C
Cabled fibre cut-off 5.3 λ < λ IEC 60793-1-44,
...