How often are arc flash study required by OSHA?

OSHA does not have a specific requirement for how often an arc flash study must be conducted. Instead, OSHA’s general duty clause requires employers to provide a workplace free from recognized hazards that are likely to cause death or serious physical harm. OSHA has determined that an arc flash hazard is a recognized hazard, so employers must assess and address arc flash hazards in the workplace.

As general guidance, OSHA and the National Fire Protection Association (NFPA) recommend that employers conduct an arc flash hazard analysis when changes are made to a facility’s electrical distribution system, such as when new equipment is added or existing equipment is modified. Also, OSHA requires employers to provide employees with the necessary information and training to safely perform their job responsibilities, including information about arc flash hazards and the procedures for working safely around electrical equipment.

It’s also worth mentioning that it’s always a good practice to review your arc flash study periodically. As technology and equipment are changing, new equipment and protection devices are coming to market and might impact the previous study results. This will help to ensure that employees are protected from the hazards of an arc flash.