There is always a debate on how to perform a best arc flash risk assessment and what are the major key factors influencing the arc flash energy levels. A detailed field Arc flash survey has to be conducted prior performing the arc flash study to identify and understand the physical layout of the plant.
As Arc flash temperatures are abnormal and very high there shall enough emphasis to reduce them to the safer level and ensure the safety of the workers.
Arc flash categories are identified based on arc flash temperatures which we technically say the incident energy levels. In Arc flash assessment we should also take care of the other scenarios like shock hazard so that the working personnel safety is not compromised. The Arc flash energy calculation mainly depends on the available fault current and the successful short circuit interruption capacity. So electrical coordination study plays a crucial role in calculating these energy levels and an expert view shall be considered for better operation and best safety possible for the system.