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Occupational Safety and Health Administration OSHA

Accident Report Detail

Accident: 170172241 - Two Employees Injured In Powder Mixing Explosion

Accident: 170172241 -- Report ID: 0950613 -- Event Date: 08/21/1990
InspectionOpen DateSICEstablishment Name
11179167908/22/19904512United Airlines
At 2:30 p.m. on August 21, 1990, at the United Airlines maintenance operations center, a powder containing aluminum oxide used for coating turbine blades was being mixed in the new focus repair cell. Approximately 3,000 pounds of powder had been transferred to the #1 bin. Employee #1 had just left the powder mixing room and was standing outside the door. Employee #2 and three coworkers were also outside, standing near the control panel, when an explosion occurred in the mixing room. Employee #1 was struck by the powder room door and thrown against the building. He suffered broken ribs, a broken pelvis, a concussion, and a bruised lung and shoulder. Employee #2 was thrown back 8 to 10 ft. The employee emergency action plan was implemented and the building evacuated.
Keywords: fracture, lung, explosive mixing, explosion, pelvis, rib, struck by, combustible dust, concussion, chemical
Employee # Inspection Age Sex Degree Nature Occupation
1 111791679 Hospitalized injury Fracture Machinery maintenance occupations
2 111791679 Non Hospitalized injury Other Machinery maintenance occupations

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