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BSI PD IEC/TR 62691:2016

BSI PD IEC/TR 62691:2016

$189.07

Optical fibre cables. Guidelines to the installation of optical fibre cables

Published By Publication Date Number of Pages
BSI 2016 50
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IEC TR 62691, which is a Technical Report, gives recommendations for handling and installing optical fibre cables on metropolitan communication networks. Installation methods covered by this document include underground ducts, trenchless technique, blowing in microducts, aerial installation on poles, lashed aerial in metropolitan networks, direct buried and use of trenches.

Special installation situations such as tunnelling and lead-in installations, on-bridges, underwater, use of sanitary sewers, high pressure gas pipes and drinking water pipes are commented and detailed.

Installation and maintenance of optical fibre cables on overhead power lines including the following are not covered by this document and are referred to in IEC TR 62263:

  • optical ground wire (OPGW) fibre cable;

  • optical phase conductor (OPPC) fibre cable;

  • optical attached fibre cable (OPAC);

  • all dielectric self-supporting (ADSS) optical fibre cable.

IEC TR 62263 includes an extensive coverage on recommendations to ensure the safety of personnel and equipment when installing or maintaining these types of optical fibre cables on overhead power lines.

PDF Catalog

PDF Pages PDF Title
4 CONTENTS
7 FOREWORD
9 INTRODUCTION
10 1 Scope
2 Normative references
3 Installation planning
3.1 Installation specification
11 3.2 Route considerations
3.3 Cable installation – Tension considerations
12 3.4 Duct installations – Cable tension predictions
3.5 Maximum tension or compression force exerted on cable
3.5.1 General
3.5.2 Total cable tension – pulling applications
13 Figures
Figure 1 – Cable tension calculations (Equations (1) to (3))
14 3.5.3 Total cable tension – pushing, blowing, or pulling applications
Tables
Table 1 – Calculation for total tension
16 Figure 2 – Cable tension calculations (Equations (4) to (9))
Table 2 – Calculation for pulling force in Figure 2
17 Table 3 – Calculation for pushing force in Figure 2
18 Table 4 – Calculation for blowing force in Figure 2
19 3.6 Installation temperature
3.7 Information and training
Figure 3 – Cable tension calculations
20 4 Cable installation methods
4.1 General considerations
4.2 Safety in confined spaces
4.3 FTTX installation
21 4.4 Pre-installation procedures
4.5 Installation of optical cables in underground ducts
4.5.1 Application
Figure 4 – FTTX applications
22 4.5.2 Installation using trenchless technique
4.5.3 Cable overload protection methods
4.5.4 Cable bending and guiding systems
4.5.5 Winching equipment and ropes
23 4.5.6 Cable friction and lubrication
Figure 5 – Cable with fitted sock-type grip
24 4.5.7 Cable handling methods to maximise installed lengths
Figure 6 – The “figure-8” system
25 4.5.8 Jointing length allowance
4.5.9 Blowing techniques for the installation of fiber optic cables into ducts
4.5.10 Optical fibre cable installation by floating technique
4.6 Installation of aerial optical cables
4.6.1 Application
Figure 7 – Optical fibre cabling in an underground duct
26 Figure 8 – Aerial cable parameters
27 Figure 9 – Analysis of forces acting on an aerial cable with ice formation
28 4.6.2 Installation methods
4.6.3 Cable protection methods
Figure 10 – Example of calculated forces for an aerial operation cable design
29 4.6.4 Winching and guiding systems
4.6.5 Methods to maximise lengths
4.6.6 Jointing length allowance
4.6.7 In-service considerations
Figure 11 – Aerial cable joint point
30 4.6.8 Lashed aerial applications
Figure 12 – Aerial cable applications
Figure 13 – Drive-off (moving reel) method
31 Figure 14 – Stationary reel method
33 4.7 Installation of buried cable
4.7.1 Installation methods
4.7.2 Cables in trenches
Figure 15 – Minimum bend radius for the optical cable at dead ends (single fixing) and at directional changes (double anchorage) situations
34 Table 5 – Minimum installation depths
35 4.7.3 Installing cables by ploughing
4.7.4 Methods to maximise lengths
4.7.5 Jointing length allowance
4.8 Installation in special situations
4.8.1 Tunnel and building lead-in
4.8.2 Bridges
4.8.3 Underwater
36 4.8.4 Storm and sanitary sewers
37 Figure 16 – Conduit robotized installation
Figure 17 – Spring loaded stainless-steel ring – Conduit fastening
38 Figure 18 – Schematic drawing robotized installation – Drilling
39 Figure 19 – Schematic drawing – Spanning of optical fibre cables within sewers
Figure 20 – Schematic drawing – Laying on the ground of optical fibre cables within sewers
40 4.8.5 High pressure gas pipes (fiber-in-gas)
Figure 21 – Picture of an the I/O-port
41 4.8.6 Drinking water pipes
Figure 22 – Schematic drawing of cable installation within gas pipe
42 Figure 23 – I/O-port for optical fibre installation in water drinking pipes
Figure 24 – Schematic drawing of OF cable installation within drinking water lines
43 4.8.7 Industrial environments
4.9 Installation of indoor cables
4.9.1 General considerations
4.9.2 Cable routing
Figure 25 – Installation of I/O-ports on high pressure PE drinking water pipes
44 4.9.3 Confined spaces
4.9.4 Installation of cables in the vertical riser area of buildings
4.10 Blown systems
4.10.1 General considerations
45 4.10.2 Tube installation
4.10.3 Fibre and cable installation
46 4.11 Cable location
5 Lightning protection
Figure 26 – Cable installation by cascade blowing
47 Bibliography

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BSI PD IEC/TR 62691:2016
$189.07