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Occupational Safety and Health Administration OSHA

Accident Report Detail

Accident: 200611234 - Employee Troubleshooting Propane Unit Injured In Explosion

Accident: 200611234 -- Report ID: 0111700 -- Event Date: 12/05/1997
InspectionOpen DateSICEstablishment Name
30044512912/15/19973491Webster Valve Co.
Two employees were servicing an Aerovent makeup-air unit, which contained a buildup of propane gas because of a malfunctioning valve. Normally, the valve, a relief device, vented the propane gas to the exterior of the unit or another safe location. While the employees were troubleshooting, an electric arc in the wiring ignited the propane atmosphere and caused an explosion. The electrical wiring installation was not suitable for use in the hazardous location. One employee, who was injured in the explosion, was hospitalized.
Keywords: electric arc, maintenance, e gi iv, electrical, ventilation, explosion, heat exchanger, electric conductor, propane, equipment approval
Employee # Inspection Age Sex Degree Nature Occupation
1 300445129 Hospitalized injury Other Occupation not reported

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