OSHA Updates Guidance on Exposure to Shock & Arc Flash Hazards
OSHA recently released updated guidance on arc flash safety, highlighting the dangers of low-voltage systems and emphasizing the need for proper personal protective equipment (PPE), including arc-rated clothing, for nearly all energized work above 50 volts, even on seemingly low-voltage systems. This marks the first significant update to arc flash guidance from OSHA in nearly 20 years.
Key points about the new OSHA arc flash guidance:
Focus on low voltage – The guidance specifically addresses the misconception that low-voltage systems are safe from arc flashes, emphasizing that even 120/208 volt systems can cause severe injuries if not handled properly.
Proper PPE required – OSHA reiterates that all energized work above 50 volts should be done with appropriate arc-rated PPE, including clothing, to prevent burns from arc flashes.
De-energized but not locked out – The guidance clarifies that even if equipment is considered “de-energized,” if it is not properly locked out or tagged out, it must be treated as energized and requires proper PPE.
Training and awareness – The new guidance emphasizes the importance of worker training on arc flash hazards, proper PPE use, and hazard identification.
Multiple documents – OSHA has released a detailed document for employers and simplified one-page “quick cards” for workers to easily reference key information.
Why is this update important?
Increased electrification – With the growing adoption of electric vehicles and renewable energy, more workers are exposed to potential arc flash hazards.
Misconception about low voltage – Many workers mistakenly believe low voltage systems are not a significant arc flash risk.
Preventing injuries – This new guidance aims to reduce the number of arc flash injuries and fatalities by addressing common misconceptions and promoting better safety practices.
The NIETC provides our contractors and members a sample Energized Electrical Work Policy that aligns with OSHA’s Construction and General Industry electrical safety regulations. It is based on the 2024 edition of the NFPA 70E Standard for Electrical Safety in the Workplace and includes applicable references to the NFPA 70B, Standard for Electrical Equipment Maintenance, 2023 edition. Contact me if you would like a copy.
