Safety Facility Equipment Identification Catalog Page 10 Key Business Issues

10 Key Business Issues Arc Flash Arc Flash Safety What is Arc Flash & What Causes It? An arc flash is a short circuit through air that flashes over from one exposed live conductor to another conductor or to ground. This electrical fault can create a dangerous release of energy, including thermal energy, acoustical energy, pressure wave or debris. There are many different ways an arc flash can occur, including: Coming close to a high-amp source with a conductive object Dropping a tool or creating a spark Breaks or gaps in insulation Failing equipment due to use of substandard parts, improper installation, or even normal wear and tear Dust, corrosion or other impurities on the surface of the conductor OSHA cites and fines employers for failure to protect employees from the dangers of arc flash under regulation 29 CFR 1910.333(a). The National Fire Protection Association (NFPA) details how to comply with this regulation through the NFPA 70E standard. According to the NFPA 70E standard, there are six primary responsibilities that facilities must meet, including: 1. Training for employees 2. Written safety program in place that is actionable 3. Personal Protective Equipment (PPE) available for employees 4. Insulated tools 5. Arc flash hazard degree calculations 6. Properly labeled equipment Some 2015 Updates: The NFPA 70E gets updated every three years. Some of the most recent updates included: Updated training and retraining requirements Revision to arc flash warning label content Elimination of the PPE Hazard Category "0" Elimination of Prohibited Approach Boundary Additional boundary requirements Revisions to selecting appropriate PPE Minor terminology changes (such as "work shoes" becomes "footwear") NFPA 70E Standard For Electrical Safety In the Workplace. Arc Flash Labeling Who's Responsible for Labeling? Arc flash labeling is the responsibility of the employer, not the manufacturer or installer of the equipment. What Needs to be Labeled? Labeling is required for any piece of electrical equipment that is likely to require examination, adjustment, service or maintenance while energized, creating the potential for an arc flash incident to occur. Any modifications or renovations to electrical equipment that will change data on the label will require an updated arc flash risk assessment and label. Where should the label be placed? Markings must be in a location that is clearly visible to workers before they may be exposed to any potentially dangerous live parts. Typically, the label is placed outside the panel or enclosure door. Learn more with our free Arc Flash eBook at: arcflash

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