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Occupational Safety and Health Administration OSHA

Accident Report Detail

Accident: 559229 - 3 Employees Killed, 2 Injured By Hydrogen Sulfide Exposure

Accident: 559229 -- Report ID: 0627400 -- Event Date: 01/04/1996
InspectionOpen DateSICEstablishment Name
12338722701/05/19961389Drum Transport
Employee #1 was inside a frac tank shoveling residue (called BS) to one end of the tank for subsequent vacuuming and removal. As he completed the task, the tank was washed down with waste water containing hydrogen sulfide. Approximately 8 minutes following the waste water entrance, Employee #1 collapsed from exposure to the chemical. Employee #2 entered the tank and attempted to rescue Employee #1, but he too collapsed. Apparently Employees #3 and #4 entered the tank and attempted a rescue and but succumbed also. Employee #5 attempted to revive Employee #1 through an opening at the end of the frac tank. He was affected by the hydrogen sulfide gas but was able to call the city's first responders. Employees #1, #3, and #4 died of hydrogen sulfide exposure. Employees #2 and #5 were hospitalized.
Keywords: confined space, toxic waste, hydrogen sulfide, work rules, cleaning, frac tank, scba, oil well servicing, toxic fumes, tank
Employee # Inspection Age Sex Degree Nature Occupation
1 123387227 Fatality Poisoning(Systemic) Occupation not reported
2 123387227 Hospitalized injury Poisoning(Systemic) Occupation not reported
3 123387227 Fatality Poisoning(Systemic) Occupation not reported
4 123387227 Fatality Poisoning(Systemic) Occupation not reported
5 123387227 Hospitalized injury Poisoning(Systemic) Occupation not reported

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