Accident Report Detail
Accident Summary Nr: 14330815 - Two Employees Injured In Combustible Dust Explosion
|Inspection Nr||Date Opened||SIC||NAICS||Establishment Name|
|109364612||06/29/1990||3369||0||Hart Metals, Inc.|
Abstract: Employees #1 and #2 were milling magnesium powder to a particle size of approximately 149 microns in diameter. Employee #1 was sweeping the floor while Employee #2 was manually dumping magnesium powder into a pneumatic feed that would feed the larger particles to a hammermill. The company had installed the milling system on site, using a variety of pre-manufactured components. Approximately 25 minutes after the start of the operation, the magnesium dust in the system ignited. The subsequent fire severely burned Employee #1 and caused multiple injuries to Employee #2. Both employees were hospitalized. The accident was caused by inadequate employee training and improper process controls and instrumentation. Improper explosion venting and suppression were contributing factors.
|Employee #||Inspection Nr||Age||Sex||Degree||Nature of Injury||Occupation|
|1||109364612||Hospitalized injury||Burn/Scald(Heat)||Occupation not reported|
|2||109364612||Hospitalized injury||Bruise/Contus/Abras||Occupation not reported|