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Occupational Safety and Health Administration OSHA

Accident Report Detail

Accident: 170715858 - Employees Exposed To Argon Gas In Confined Space

Accident: 170715858 -- Report ID: 0950631 -- Event Date: 10/04/1993
InspectionOpen DateSICEstablishment Name
11988136510/13/19933299Ceradyne
At approximately 8:15 a.m. on October 4, 1993, Employee #1 entered a confined space (furnace) in which argon gas was used to create an inert atmosphere. Employee #1 passed out. Employee #2 observed the unconscious body at the bottom of the furnace and entered in an attempt to rescue his fellow worker. Employee #2 was also rendered unconscious, due to oxygen deficiency. Employees #1 and #2 were eventually found by another plant worker. It was also discovered that the argon gas supply line had not been disconnected. The air was purged by large fans and the unconscious employees were transported to Hoag Hospital in Costa Mesa, CA, for emergency treatment and tests. Both Employees #1 and #2 were discharged the same day of the accident.
Keywords: furnace, oxygen deficiency, unconsciousness, ventilation, confined space, work rules, hose, overexposure, argon, respirator
Employee # Inspection Age Sex Degree Nature Occupation
1 119881365 Hospitalized injury Asphyxia Occupation not reported
2 119881365 Hospitalized injury Asphyxia Occupation not reported

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