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Occupational Safety and Health Administration OSHA

Inspection Detail

Violation Summary
Serious Willful Repeat Other Unclass Total
Initial Violations 2 2
Current Violations 2 2
Initial Penalty $9,000 $0 $0 $0 $0 $9,000
Current Penalty $6,000 $0 $0 $0 $0 $6,000
FTA Amount $0 $0 $0 $0 $0 $0

Violation Items
# ID Type Standard Issuance Abate Curr$ Init$ Fta$ Contest LastEvent
  1. 01001 Serious 19100134 D01 III 06/29/2005 07/26/2005 $3,000 $4,500 $0 I - Informal Settlement
  2. 01002A Serious 19101000 A02 06/29/2005 07/05/2005 $3,000 $4,500 $0 I - Informal Settlement
  3. 01002B Serious 19101000 E 06/29/2005 07/05/2005 $0 $0 $0 I - Informal Settlement

Accident Investigation Summary
Summary Nr: 201954104 Event: 01/21/2005Four Employees Injured When Exposed To Arsine Gas
During the afternoon of January 21, 2005, four employees were working in a room containing equipment that was designed to use an electro-coagulation system to remove arsenic from process water. Adjustments to the system were being implemented to increase the speed of arsenic coagulation. By the following morning all four workers were passing urine which was blood red in color, and all four had been admitted into hospitals. The inhalation of Arsine gas caused the symptoms and adverse medical consequences which have been exhibited by these four employees. Excessive levels of Arsenic have been found in their systems. The leading theory concerning the mechanism of generation of Arsine gas was that nascent hydrogen could form when an electric current flowed through an aqueous solution containing substantial concentrations of electrolytes. This hydrogen could react with the arsenic present in this solution to form arsine gas. The workers who suffered the most severe medical consequences spent prolonged periods of time on an elevated platform, looking directly down into the Electro-Coagulation Unit, and making observations as various adjustments were made to the process, such as changes in the amperage of electric current flowing through the process liquid which contained dissolved compounds of arsenic. The use of sulfuric acid to periodically clean the unit and the iron plates which it contained might also have been a contributing factor. Two of the four hospitalized workers displayed little or no functioning of the kidneys and underwent dialysis.
Keywords: inhalation, air contamination, gas, chemical vapor, kidney, poisoning, chemical
Inspection Degree Nature Occupation
1 308510270 Hospitalized injury Poisoning(Systemic) Occupation not reported
2 308510270 Hospitalized injury Poisoning(Systemic) Occupation not reported

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