arc flash procedures need to be clearly defined and the working personnel shall be trained on arc flash policy and what is the danger of arc flash and shall be clearly instructed on the usage of arc flash PPE.
Importance of Minimum Approach Distances. Example if the arc flash boundary is 1.5ft and limited approach boundary is 3.5ft use the limited approach boundary distance to setup a barricade. Arc flash assessment requirements are clearly mentioned in NFPA 70e all hazard flash safety guidelines including arc flash distance, arc flash PPE need to be mentioned in the arc flash warning labels. An important factor to note is that you should use the higher of the two distance numbers to setup the barricade. That’s the distance where a worker without appropriate PPE would receive second-degree burns. Arc flash hazard study also known as arc flash risk assessment is performed to identify and mitigate the arc flash hazards or arc flash risks available in the system and ensure the safety of the working personnel with proper arc flash safety procedure.Īrc flash policy for study demands that arc flash survey needs to be carried out before building the real time model for arc flash assessment. The arc flash boundary is calculated to 1.2 calories/cm2 of incident energy. Arc flash analysis is a combination of electrical study with ref to the safety guidelines. What is arc flash analysis? is the first question that raises in every safety concerns mind.
