Electrical arc flash near MCC panel 4B during breaker racking operation. Maintenance electrician experienced brief arc flash while racking in a 480V breaker. Flash burned arm hair through Nomex sleeve but no skin contact burn. PPE prevented injury.
Incident Details
Location
Electrical Room 2 - MCC Panel 4B
Date & Time
Sat, Mar 7, 2026, 3:34 AM
Reported By
Sofia Long
People Involved
Patricia James, Richard Scott, Elizabeth Alvarez
Full Description
Electrical arc flash near MCC panel 4B during breaker racking operation. Maintenance electrician experienced brief arc flash while racking in a 480V breaker. Flash burned arm hair through Nomex sleeve but no skin contact burn. PPE prevented injury.
Root Causes
Equipment
Equipment malfunction, Inadequate maintenance, Design deficiency, Improper installation, Worn or degraded components
Process
Process deviation, Inadequate process control, Start-up / shutdown error, Abnormal operating conditions, Insufficient process monitoring
Corrective Action
Breaker removed from service and sent for inspection. Electrician evaluated by occupational health nurse.
Acknowledgments
50%16 of 32 workers acknowledged