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Accident Report Detail

Accident: 200710630 - Two Employees Die Of Exposure To Hydrogen Sulfide

Accident: 200710630 -- Report ID: 0636900 -- Event Date: 08/19/1998
InspectionOpen DateSICEstablishment Name
11004038308/21/19981623Conn & Sons Construction Co., Inc.
Employees #1 and #2 were part of a construction crew building an extension sewer line that was to tap into an existing city line. The crew had exposed one side of a manhole in the city sewer line and a subcontractor had core-drilled a hole in it for placement of the new line. Some concrete remained intact after the drilling was completed. Employee #1 was lowered into the manhole using a chain draped over a rock bar. He was immediately overcome by the high levels of hydrogen sulfide. Employee #2 attempted to rescue him but was also overcome by the fumes. Both workers were killed.
Keywords: sewer, hydrogen sulfide, construction, inhalation, gas, air contamination, chemical vapor, poisoning, manhole, chemical
End Use Proj Type Proj Cost Stories NonBldgHt Fatality
Pipeline New project or new addition Under $50,000 X
Employee # Inspection Age Sex Degree Nature Occupation Construction
1 110040383 Fatality Poisoning(Systemic) Occupation not reported FallDist:
FallHt:
Cause: Trenching, installing pipe
FatCause: Asphyxiation/inhalation of toxic vapor
2 110040383 Fatality Poisoning(Systemic) Occupation not reported FallDist:
FallHt:
Cause: Trenching, installing pipe
FatCause: Asphyxiation/inhalation of toxic vapor

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