Accident Report Detail

Accident Summary Nr: 200710630 - Two employees die of exposure to hydrogen sulfide

Accident Summary Nr: 200710630 -- Report ID: 0636900 -- Event Date: 08/19/1998
Inspection Nr	Date Opened	SIC	NAICS	Establishment Name
110040383	08/21/1998	1623	0	Conn & Sons Construction Co., Inc.

Abstract: 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

Accident Details
End Use		Project Type		Project Cost	Stories	Non-building Height	Fatality
Pipeline		New project or new addition		Under $50,000			X

Employee Details
Employee #	Inspection Nr	Age	Sex	Degree of Injury	Nature of Injury	Occupation	Construction
1	110040383			Fatality	Poisoning(Systemic)	Occupation not reported	Distance of Fall: feet Worker Height Above Ground/Floor: feet Cause: Trenching, installing pipe Fatality Cause: Asphyxiation/inhalation of toxic vapor
2	110040383			Fatality	Poisoning(Systemic)	Occupation not reported	Distance of Fall: feet Worker Height Above Ground/Floor: feet Cause: Trenching, installing pipe Fatality Cause: Asphyxiation/inhalation of toxic vapor

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