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Occupational Safety and Health Administration OSHA

Accident Report Detail

Accident: 201260031 - Employee Dies Of Asphyxia In Manhole

Accident: 201260031 -- Report ID: 0524200 -- Event Date: 08/16/1996
InspectionOpen DateSICEstablishment Name
30094725608/19/19961629Kenny Construction Company
Employee #1, a laborer, and his foreman arrived at a manhole to open a mechanical valve at the bottom of the manhole. While Employee #1 was removing the manhole cover, the foreman was 5 ft away at his truck getting the air tester. When the foreman turned around to go back to the manhole, he saw the top of Employee #1's head disappear into it. The foreman then looked down into the manhole and saw that Employee #1 was unconscious. The foreman tested the air in the manhole and obtained a reading of 14% oxygen. He immediately called 911, and Employee #1's body was retrieved by the local fire department with the use of SCBAs. OSHA's testing of the manhole showed oxygen levels of between 12 and 14 percent. Tests for carbon monoxide, hydrogen sulfide, and flammable vapors were negative. Tests for carbon dioxide were positive, with a reading of 35,000 ppm.
Keywords: enclosed space, oxygen deficiency, unconsciousness, asphyxiated, work rules, construction, scba, manhole
Employee # Inspection Age Sex Degree Nature Occupation
1 300947256 Fatality Asphyxia Construction laborers

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