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Occupational Safety and Health Administration OSHA

Accident Report Detail

Accident: 943381 - Employees Hospitalized After Exposure To Chlorine Gas

Accident: 943381 -- Report ID: 0418200 -- Event Date: 04/26/1991
InspectionOpen DateSICEstablishment Name
11007105705/01/19917218Kleen-A-Matic
At approximately 8:15 a.m. on April 26, 1991, Employee #1 mistakenly pumped sodium hypochlorite (bleach) into a 360 gallon wastewater pretreatment tank that contained a 1:6 concentration of hydrochloric acid (HCl) or muriatic acid and water, causing the release of chlorine gas. He had intended to replenish the pretreatment tank with hydrochloric acid to attain the proper pH balance, but chose the wrong drum. Employees #2 through #5, who were working in adjacent areas, were exposed to the chlorine gas. Employees #1 through #5 were hospitalized. Employee #6, who also worked in an adjacent area, tripped while exiting the building and injured her shoulder.
Keywords: hydrochloric acid, shoulder, sodium hypochlorite, gas, chlorine, tripped, overexposure, inattention
Employee # Inspection Age Sex Degree Nature Occupation
1 110071057 Hospitalized injury Other Occupation not reported
2 110071057 Non Hospitalized injury Strain/Sprain Occupation not reported
3 110071057 Hospitalized injury Other Occupation not reported
4 110071057 Hospitalized injury Other Occupation not reported
5 110071057 Hospitalized injury Other Occupation not reported
6 110071057 Hospitalized injury Other Occupation not reported

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