How often should an arc flash analysis be updated according to the NFPA 70E?

The National Fire Protection Association’s (NFPA) 70E Standard for Electrical Safety in the Workplace requires that employers conduct an arc flash hazard analysis and update it as necessary to ensure that it remains accurate and current. The standard recommends that the analysis be updated at least once every five years or sooner if there are significant changes to the electrical system, such as new equipment added, major modifications, or changes in the available fault current.

It’s also important to note that even if the electrical system hasn’t changed, it’s recommended to have an annual or bi-annual review of the analysis to ensure that it still reflects the current conditions of the electrical system and that the results of the analysis are still accurate. Additionally, if new equipment is introduced or changes are made, it’s essential to update the analysis accordingly and retrain all employees affected by the changes.

It’s worth noting that the NFPA 70E is a consensus standard, which means it is not a mandatory regulation. Local authorities can adopt it, insurance companies, or even employers voluntarily. However, many organizations adopt this standard as it is widely considered the industry’s benchmark for safety in electrical work, and compliance with it is often a requirement in contracts.

In summary, the NFPA 70E recommends that the arc flash analysis is updated at least every five years or sooner if there are significant changes in the electrical system, but also recommends an annual or bi-annual review of the analysis to ensure that it still reflects the current conditions of the electrical system.