5 Vital Safety Rules for Working with Fiber Optic Cables

Here are 5 vital rules for staying safe when you’re working on fiber optic cables.

1. Know the standards that apply to your work

Whether you’re installing new fiber optic cables or troubleshooting and repairing an existing fiber network, a working knowledge of the regulations that apply to your project can help you (and your team) stay safe and keep your project on track. The standards that govern work on fiber optic cables include:

• • The U.S. Department of Labor’s Occupational Safety and Health Administration (OSHA) covers the installation and maintenance of fiber conductors, as well as the minimum performance standards required to do the work, in OSHA 29 CFR 1910.268 – Telecommunications. Many states have their own OSHA State Plan; check this map to find the OSHA office near you.
• • The National Electrical Safety Code (NESC), published by the Institute of Electrical and Electronics Engineers (IEEE), specifies safe practices for installing, operating, and maintaining electric supply and communications lines and equipment. The most recent code update went into effect in February 2023.
• • The National Electrical Code^® (NEC) — or NFPA 70 — governs electrical design, installation, and inspection in all 50 states of the U.S. It’s published every 3 years by the National Fire Prevention Association (NFPA). State and local laws commonly require electricians to comply with the NEC; some regulations specifically apply to fiber optic cable installations.
• • Finally, you should follow your company’s safety practices on any job.

2. Keep it clean

The fiber at the center of a fiber optic cable is glass — powerful yet delicate, and capable of inflicting great injury when damaged or broken. Control hazardous glass fragments from a job by keeping yourself, and your work area, very clean.

• • Wear safety glasses with side shields (over your eyeglasses, if you wear them) to help keep fiber shards from reaching your eyes. Keep your hands away from your face while you’re working, and always wash your hands thoroughly before touching your face or contact lenses.
• • Wear a disposable lab apron to reduce the chances of fiber splinters collecting on your clothing and transferring to other surfaces (or taking a ride home with you).
• • Don’t allow food or beverages in the work area (don’t smoke there, either). Not only can particles from your lunch break contaminate your work, fragments of fiber are impossible to see but easy to ingest if they fall into your food — which could lead to internal hemorrhage and even death.
• • Make sure your work area is well ventilated to help prevent tiny glass particles from disturbed fiber cable from becoming airborne and being inhaled.
• • Dispose of all fiber cable scraps properly in a labeled container with a secure lid.
• • Make sure there’s adequate clearance around any spark hazards or heat sources, such as fusion splicers and curing ovens, to reduce the chance of fire.
• • Clean up at the end of the day to control fiber fragments and keep everyone on the job safe.

3. Understand the chemicals you’re handling

Fiber optic splicing and termination processes incorporate various chemicals, cleaners, and adhesives. Familiarize yourself with the Material Safety Data Sheet (MSDS) for the chemicals you’re using, and always follow safe handling procedures.

4. Be aware of your environment

Runs of fiber cable often share space with other types of cabling, including power conductors. They can be in confined spaces, atop poles, or near power lines or energized equipment. Hazards can range from dropping a tool on your foot or picking up a glass splinter to induced voltages, explosive gases, and charged wires.

Stay aware of your surroundings and any hazards, whether on your work site or with the specific task at hand. Always observe NFPA Minimum Approach Distance rules when working near power lines and power sources.

5. Use the right tools

Never look directly into the end of a fiber optic cable. You won’t see anything, even if the cable is live — but the invisible infrared light could still do damage to your eyes. Not only can the right tool help you get the job done better and faster, it can help you avoid possible injury. Fluke Networks has the tools you need.

• • The FiberLert™ Live Fiber Detector is the easiest way to detect invisible fiber optic light for checking fiber activity, polarity, and connectivity — no setup or interpretation needed.
• • Visual fault detectors, like the VisiFault™ Visual Fault Locator, inject visible light into a fiber that can be detected at the end face or at severe bends, breaks, or poor connections.
• • Power meters measure insertion loss and power levels at the end of a fiber. Tools like the SimpliFiber® Pro and the MultiFiber™ Pro Optical Power Meters can help you determine whether the fiber can support a given application.

Keep learning

• • Is Power over Ethernet Safe?
• • Choosing the Best Fiber Optic Scope for Today’s Fiber Inspection
• • Fundamentals: Fiber Optic Testers
• • How to clean your cable and fiber network tester