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Occupational Safety and Health Administration OSHA

Accident Report Detail

Accident: 200525608 - Toxic Atmosphere In Confined Space Kills Two Employees

Accident: 200525608 -- Report ID: 0751910 -- Event Date: 07/08/2002
InspectionOpen DateSICEstablishment Name
11509697607/09/20021623Insituform Technologies Usa, Inc.
On July 8, 2002, two employees worked in a 2-foot by 5-foot sanitary sewer conduit that was a permit-required confined space. The sewer conduit contained one to two feet of water. The employees were exposed to inhalation hazards such as hydrogen sulfide, unknown gases, and an oxygen-deficient atmosphere. They were overcome by the hazardous atmosphere and were asphyxiated. Five employees, who attempted to rescue their coworkers, were also overexposed to the hazardous atmosphere, and were hospitalized.
Keywords: oxygen deficiency, sewer, asphyxiated, confined space, conduit, hydrogen sulfide, inhalation, gas, chemical vapor, overexposure
End Use Proj Type Proj Cost Stories NonBldgHt Fatality
Sewer/water treatment plant Alteration or rehabilitation $1,000,000 to $5,000,000 X
Employee # Inspection Age Sex Degree Nature Occupation Construction
1 115096976 Fatality Asphyxia Laborers, except construction FallDist:
FallHt:
Cause: Excavation
FatCause: Other
2 115096976 Hospitalized injury Other Laborers, except construction FallDist:
FallHt:
Cause: Excavation
FatCause: Other
3 115096976 Hospitalized injury Other Laborers, except construction FallDist:
FallHt:
Cause: Excavation
FatCause: Other
4 115096976 Hospitalized injury Other Laborers, except construction FallDist:
FallHt:
Cause: Excavation
FatCause: Other
5 115096976 Hospitalized injury Other Laborers, except construction FallDist:
FallHt:
Cause: Excavation
FatCause: Other
6 115096976 Fatality Asphyxia Laborers, except construction FallDist:
FallHt:
Cause: Excavation
FatCause: Other
7 115096976 Hospitalized injury Other Laborers, except construction FallDist:
FallHt:
Cause: Excavation
FatCause: Other

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