Step 3: Determine the bolted fault currents One-line diagrams must be developed or updated to show the current configuration and modes of operation for the power system.Step 2: Determine the system modes of operation A qualified Engineer needs to visit the plant and collect the required data to perform the Arc Flash study.Step 1: Collect the system and installation data How To Do Arc Flash Study?įirst and foremost, we need to define the scope and deliverables of the study as per IEEE1584.1:2022.įollowing steps to calculate the incident energy and define Arc-Flash boundaries as recommended by IEEE1584:2018. The PPE category method relies on tables in NFPA 70E that assign PPE categories based on the equipment type and specific parameters. The study’s final results are used to select Arc-rated PPE and clothing with a sufficient arc rating and establish what is known as an Arc Flash boundary. It is defined as “the amount of thermal energy impressed on a surface, a certain distance from the source generated during an electric arc event.” IEEE 1584 calculations are known as an incident-energy analysis. NFPA 70E -2021: Standard for Electrical Safety in the Workplace. IEEE 1584.1-2022: IEEE Guide for the Specification of Scope and Deliverable Requirements for an Arc-Flash Hazard Calculation Study in Accordance with IEEE Std 1584. IEEE 1584-2018: IEEE Guide for Performing Arc-Flash Hazard Calculations. Reference Standards to Perform Arc Flash Study An Arc Flash risk assessment should be reviewed every five years, or any time modifications such as changes in the load or protective equipment are made to the facility that can affect the outcome of the study.Īrc Flash studies should be performed by experienced and qualified electrical engineers knowledgeable in power system engineering, IEEE 1584, NFPA 70E, short circuit, device coordination, and Arc Flash studies. If your answer is NO for any one of the above questions, then say absolute YES to Arc Flash Study.Īn Arc Flash study must be completed before a worker is exposed to an electrical hazard.
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