ARC FLASH HAZARD ANALYSIS (AFHA) RESULTS

The Arc Flash Results and associated Hazard Risk Categories provide life safety information for your workers. The Arc Flash Results include site specific determinations of the available incident energy at every equipment bus along the distribution system. This information is used to define the safe boundary distance that an unprotected person (worker, supervisor, manager) must maintain from the area when live work is performed. The Hazard Risk Categories determine the minimum Personal Protective Equipment (PPE) that must be worn when working on live equipment.

This table provides a typical example of an Arc Flash Hazard Results table. At minimum the report should include the following:

• Each device, component, or piece of electrical equipment where an arc flash hazard exists
• Incident energy calculated in cal/cm2
• Category of PPE required to safely work on the equipment
• Flash protection boundary
• Working distance from which incident energy is calculated
• Available fault current and duration of clearing time

Arc Flash Studies

• Arc Flash Hazard Analysis (AFHA) NFPA-70E
• Single-line Diagrams
• Short Circuit Studies
• Overcurrent Protective Device Coordination
• Equipment Evaluation
• Arc Flash Results
• Arc Flash Labeling
• Customized Site-Specific NFPA-70E Arc Flash Training
• Personal Protective Equipment (PPE)

• Arc Flash Codes and Regulations

Arc Flash Hazard Analysis | Power Engineering
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