• (Optional) End-to-end losses of individual fiber links The following tests shall be performed on all fiber-optic cable installations: • Continuity testing upon delivery of optical cables to the site of installation, • End-to-end loss testing for each complete transmitter-to-receiver link. In real life, however, this is a rare situation. In addition, other types of testing may be required for certain types of installations. Familiarizing yourselfwith Standard 301 is a smart step to avoid such problems.Up until a little over a year ago an installation standard for optical cable didn't exist. • When powered pulling equipment is used to install optical cable, tension monitoring equipment or breakaway swivels shall be used. Metropolitan Communications Group is an established leader in the underground construction and maintenance of communication infrastructures. The requirements of this section are as follows: All optical test results shall be thoroughly and accurately documented, and copies of the test results saved in a permanent form (typically in both hard copy and on computer disk). Underground fiber optic cable facilities installation could occur in public streets and railroad rights-of-way, which are areas commonly used for utility corridors. More importantly, it requires a change of mind-set for workers that cut their teeth on power wiring. Hence the safety requirements of this section of the standard: • Live optical fiber ends (live fibers are those with signals being sent through them) shall not be inspected by technicians; fibers shall be dark (no signal being transmitted) when inspected. Optical cable is usually placed in a 25 to 40 mm inside diameter (ID) sub-duct which is placed into an existing larger diameter communications conduit. Where possible, rounded or padded supports shall be used. Swivels shall be used when pulling optical cables intoconduits. Twisting Avoidance: use a break-away swivel, verify load rating is 600 lbs. Yes, the NEC has covered optical cable for longer than that, but these requirements focus on fire safety and installation with electrical. • Fiber-optic work areas shall be clean, organized, well lit, and shall be equipped with a bottle or other suitable container for broken or stray fiber pieces. Up until a little over a year ago an installation standard for optical cable didn't exist. We'll go through some of the more important sections now to bring you up to speed. Hence, fiber optic cable installation into a duct using a pulling method is suitable to apply within short distances. The payment of these reserved pipes and cores by a new operator will follow the Guidelines for fiber and duct sharing. Safety precautions. (1.3 cm) in diameter. But for data, every run of cable must be separately tested and the results permanently documented. Cables in raceways are considered to be adequately supported by the raceway. Underground Utility Standards ASTM underground utilities standards include standard practices for installing and operating optical fiber systems and repair of sewer systems. Specification for Installation of Underground Fibre. Rule 1. Copies of the standard are available from the National Association of Electrical Contractors (NECA), and perhaps from some of the standards organizations themselves. © 2020 Endeavor Business Media, LLC. Underground fiber cable installations need to be carried out very carefully. All rights reserved. Under this condition, the fiber cable needs to be stored in coil form at each manhole/handhole available at every 200 to 300 meters. The entry of outside plant cables into a structure may require special fire safety considerations. Fiber optic cable pulling sheaves should also be used at both the pulling end and pay-off end of the installation in order to maintain the proper bending radius of the fiber optic cable as the cable enters and exits the hand-hole, man-hole, etc. Another section addresses the tightness of supports. Cables directly buried require no additional support. If mule tape is used, the top speed shall be 9 ft (274 cm) per second. As of late 1998, a joint venture of the National Electrical Contractors Association (NECA) and the Fiber Optic Association approved and published ANSI/NEIS Standard 301. (industry standard for OSP Cable) or less. Don’t Let Arcing Ground Faults Sneak Up on You, Contact Voltage Testing: Tricks of the Trade, The 10 Most Popular Photo Galleries of 2016, The 10 Most Popular Photo Galleries of 2019, The 10 Most Popular Photo Galleries of 2018. The City provides water, recycled water, sanitary sewer, storm water, streets, street lighting, traffic control, and fiber-optic communication services (among other essential services) to Milpitas residents within an area of approximately 13.63 square miles. commonly placed with several feet of soil cover over the cable with the depth of cover. Pulling Tension: do not exceed specification for cable. When optical cables are squeezed out of shape, unacceptable forces are placed on the fibers, which frequently result in microbends, microcracking, or even broken fibers. Yes, the NEC has covered optical cable for longer than that, but these requirements focus on fire safety and installation with electrical conductors; and not a whole lot more. Although this seems obvious, one section details how cables must be supported: All optical cables shall be securely supported, and shall have the supports spaced closely enough that there will be no excessive force placed on the cable. Because proposed installation would occur at a depth of more than one foot below ground, the project could impact existing underground utilities and service connections. Cable jackets shall not be directly pulled unless designed for the purpose, or unless the run is very short and requires a minimal pulling force. Reflecting back on the past year, we thought it would be worthwhile to revisit the 10 most popular photo galleries of 2016. • When pulls are accomplished in two or more stages, and spare cable must be unreeled, it shall be configured in large figure-eights on a safe, flat surface, such as the ground or a clean floor. Loops of cable (commonly called service loops) shall be provided at all intermediate pulling points, such as in manholes and pull boxes. That's all changed now. Documentation. †«yI’KhSÃÇ«ûî'+ø²Nþ}½Ô¦½™ç³Íí¦Ý­—ÉÇ{¸ƒm×ÛÓ¤a0")rPá!Ã`BÙË5–UÄzaËü(zÞ©` ½…¶ß²HKUŸdŸQ>tGûm(Hö©Î×e‹‹‚°…O^'½òOI¢×. Here are the 5 basic rules to follow when installing any fiber cable. When installing optical cable, what you don't know could really hurt you or damage your cable. It is intended for personnel with prior experience in planning, engineering, or placement of underground cable. MCG has constructed fiber optic systems and traditional copper throughout the country. This is the hazard posed by broken pieces of fiber. • Boxes used with optical cables shall be designed for the purpose, and shall be equipped with cable supports. The FOA and NECA (National Electrical Contractors Association) in 2001 cooperated to develop the first ANSI standard (American National Standard) covering the installation of fiber optic cable plants. Fiber optic cables should be specified with colored jackets per industry standards which identify the cables as fiber optic cables and indicate the type of fiber in the cable. Presented in descending order, these galleries are ranked based on total website traffic over the last 12 months. Underground Fiber Optic Cable Installation The practice of handling fiber optic cables has become much more common in recent years. HUO(24) Underground filled fiber optic splice closure and organizer capable of accommodating a minimum of 24 fibers. Conclusion. They shall also check their clothing, and pat themselves with clean tape to remove any stray pieces of bare fiber. 2) SPLICING. INSTALLATION GUIDE FOR OPTICAL FIBRE CABLE Edition 05.12.2002 (REV.1.0) Copyri g h t N e xans 2 002 – All data subject to c h ange w i thout prior notice TABLE OF CONTENTS 1 - Safety Warnings 2 - Working Practice 3 - Precautions 4 - Storage 5 - Generality 1 - Pre-Installation procedure 6 - Fibre optic cable construction 1 - Fibre 2 - Buffer Types (273 kG) for outdoor cable. During the installation of fiber optic cable, it is highly recommended to use a pulling grip Unless stated otherwise by the cable manufacturer, the maximum pulling tensions used for optical cables shall be 300 lbs. This will put a twist in the … Fiber Optic installation conductor shall install at least two (2) pipes with a minimum of twelve (12) cores on access network and 4 ducts on backbone network in order to facilitate fiber and duct sharing. Fiber Optic Installation Your corporate requirements for speed, bandwidth, fidelity, and security of data transmission may point to fiber optic cabling. The installation of optical cable relies heavily on testing and documentation. This practice covers the basic guidelines for installation of fiber-optic cable in underground plant. Although I'm sure there will be changes to this document as time goes on, I think it provides an excellent starting point. But with data cables (not only fiber), overtightening is a frequent source of cable damage you must avoid. Fiber optic cables are designed to withstand all typical installation and environmental stresses expected in the specific application. Direct Burial Underground Fiber Optic Cable lets you bury communications and transmissions systems underground without requiring additional protection. Long runs shall be tested with an optical time domain reflectometer, and permanent copies shall be made of all OTDR traces. The Contractor shall be responsible for: placement of cable, installation and attachment of cable to support devices within the utility tunnel system, underground structures, and pole lines, the placement of conduit, the installation of pull-boxes, the furnishings of fiber optic splice closures, and installation of termination hardware, and other as specified by UNM IT. A working familiarity with underground cable requirements, practices, and work operations is Here are some of the things that must be taken care of: You need to bury the cable below the frost line to prevent damage by background frost heaves; You need to keep the trench as straight as possible. Familiarizing yourselfwith Standard 301 is a smart step to avoid such problems. two cables are placed in an open trench dug by a trencher or plowed directly into the soil. JEA FIBER OPTIC CABLE STANDARDS JEA has standardized on two types of fiber optic cable designs. With two primary safety hazards associated with optical fiber systems, the more commonly talked about hazard is retina damage; due to looking into the ends of live fibers. • All technicians working on bare fiber shall thoroughly wash their hands immediately when leaving the work area. • Continuous cable pulls shall be used whenever possible, avoiding splice points. b) Standard optical cable color codes and fiber types shall be observed when fusion splicing two fiber optic cables together unless otherwise directed by the Ameren Representative. My recommendation is to allow 30 mm at every outlet box, and at least 3 m at every pulling point. The intent of this requirement is that the nonmetallic conduit or elbows will not be cut or grooved by the pulling process. 1.1 Products and Applications Included This standard covers fiber optic … Underground Fiber Cable Installation: Cautions. Few fiber systems have power enough to cause eye damage (cable TV systems being the exception), and most broken fiber ends will diffuse the light passing through them anyway. Safety Precautions 1.1 Confined Space Precaution 1.2 Lead Exposure Warning 1.3 Cable Handling Precautions Corning Optical Communications cable specification sheets are available which list the maximum tensile load for II. When installing optical cable, what you don't know could really hurt you or damage your cable. for outdoor cables. (I was involved with the production of this standard, and its final form was by no means certain until the standards committee took several votes.) Standard Recommended Procedure 005-011 | Issue 17 | June 2019 | Page 1 of 10 Duct Installation of Fiber Optic Cable 1. • Optical cables shall be attached to a pulling line only by methods recommended by the manufacturer of the cable. For most electrical installations, the only testing done is flipping on the light switch or pushing a Wiggy into the outlets. Cable installation. Minimum Bend Radius (MBR): maintain at all times. • When underground raceways containing optical cables enter a structure, the raceway shall be sealed to prevent the entry of gasses into the structure. • A length of free cable shall be provided at each end of a cable pull. - 72-ct UG Fiber Optic Cable: Stk No: 18-66-671. Lashing Fiber Optic Cable To A Messenger Cable The installation process of a lashed aerial fiber optic cable will generally require one or more bucket trucks to allow workers to reach the location of the lashing, guide cables around poles and through trees or … In the future, I'd like to see the standard contain specific requirements for the amounts of free cable that must be accessible at outlet points. Ergon Energy Corporation Limited. All such trace copies shall be clearly marked as to the date taken, and details of the cable and fiber runs. Again in 2016, conveying technical content through visual images in the form of photo galleries proved to be one of the largest website traffic generators among our readers. All bare fiber pieces shall be disposed of so that they cannot escape and cause a hazard. The fiber cable warning labels must be buried directly above the cable These sturdy cables are built to resist moisture, heat, soil acidity and other environmental factors that could interfere with their performance. Rule 3. The standard also lists general rules to be followed when pulling cables into place. These are essentially small glass needles, and can be quite dangerous: Painful when stuck in the skin as a splinter, they are potentially life-threatening if ingested. • Technicians making fiber terminations or splices or working with bare fiber shall be supplied with double-sided tape, or some other effective means, for picking up broken or stray pieces of fiber. • Cable pulling shall be done by hand, except when tension meters, tension-controlled, or breakaway swivels are employed. JEA has standardized on All Dielectric Self Support (ADSS) fiber cables for aerial installations and Cable-in-Conduit type for underground applications. Supports may be placed up to 5 ft (1.52 m) apart for armored cables, or cables over 1/2 in. • When pulling fiber-optic cable through nonmetallic raceways (or nonmetallic 90 degrees elbows) with rope, maximum speed through a duct shall be about 3 ft (91 cm) per second. This standard is part of the American National Standards Institute (ANSI) National Electrical Installation Standards program. Nonetheless, this is a legitimate concern. and testing cabling networks that use fiber optic cables and related components to carry signals for communications, security, control and similar purposes. Sections now to bring you up to speed for longer than that, but it does require time effort. Cables ' minimum bending radii shall not be violated clean tape to remove any stray pieces of fiber cable! Each end of a cable pull ( for example, bare fibers should be installed in accordance their. 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