Type B Accident Investigation of the April 14, 2006, Arc Flash at Brookhaven National Laboratory

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At 10:20 a.m., on April 14, 2006, a BNL Collider-Accelerator Department (C-AD) electrical engineer was injured by an arc flash at the Brookhaven National Laboratory (BNL) Relativistic Heavy Ion Collider (RHIC) when an arcing ground fault occurred across all three phases of a 480-volt, fused disconnect switch. The C-AD electrical engineer was in the process of restoring electrical power to the magnet power supplies for the Solenoidal Tracker at RHIC (STAR) detector and had just closed a switch in Building 1006A.