On May 4, 2017, AFOR organized a workshop with the theme "Installing Fiber Optic Cables in Romania", in Slatina, together with Prysmian, at the fiber optic cable factory.
Date: May 4,2017
Workshop: Installation of Fiber Optic Cables in Romania
Location: Slatina, fiber optic cable factory Prysmian
Participants: 23 people from MCSI, AFOR and 5 of its members: Prysmian, Teleprecision-MTS, Netcity Telecom, Duraline,R&M;
- 6 telecom operators: RCS&RDS, Telekom Romania, Vodafone, GTS Telecom, Euroweb and Teletrans;
- 2 operators of power distribution networks: ENEL and Electrica Distribution Muntenia North.
Summary: There have been many problems encountered in the practice of installing fiber optic cables, such us: mistaken handling of cables, misallocation of reserves (made in 8), mistaken grip on the poles etc.
There were listed the important parameters for an installation of fiber optic cables:
- maximum pulling force, Tensile Test: 1000-1200 N for cables to be installed in pipelines, 2500-3000 N for ADSS and 4500-6000 N for reinforced cables;
- bend radius: typically 20 x cable diameter (after installation) and 40 x cable diameter (during installation);
- installation temperature: > 0º C for PVC jacket cables and >-15º C for PE cables. The usual threshold temperature in Romania of -5º C is recommended due to the fusion splicing of fiber optic cables, more than for the installation of fiber optic cables;
- cable routing installed on poles: is it calculated and provided by designers and on average is 1% for OPGW and 3% for ADSS;
- micro-curves greatly affect the quality of transmission on fiber optics. Particularly lately, when most passes on DWDM, CD (chromatic dispersion) and PMD, measurements are required, and reserves or other fiber optic curves in junction boxes can dramatically affect the CD and transmission attenuation on fiber optics.
- cable supplies: - in non-fusion splicer rooms: 5-6 m
- in rooms with fusion splicer : 15+15 m
- aerial without fusion splicer: 40 m
- aerial with fusion splicer: 20 m
- at OPGW: 30-40 m (only at junctions)
- burying depth- see the standard made by AFOR SR 13558: 2014. It is recommended to complete with an action through MDRAP to become mandatory and not just a recommendation, as any standard.
The following aspects are important for receiving/checking the installation of fiber optic cables through tubes:
- absence or inability to obtain the authorization (especially for maintenance works)
- owners agreements in blocks/buidings/homes
- complaints from owners association
- the work of other previous operators that caused problems and the tenats are no longer allowing access to other operators
The following workshops will be attended by representatives from MDRAP and ASRO.
Specialty working groups will be created to make working papers, guides to good practice, useful for designers, installers, etc. to all participants in their activities.