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Occupational Safety and Health Administration OSHA

Accident Report Detail

Accident: 200525020 - Employees Exposed To Chlorine Gas

Accident: 200525020 -- Report ID: 0751910 -- Event Date: 03/07/2002
InspectionOpen DateSICEstablishment Name
30479266603/08/20027011Des Moines Marriott Downtown
At approximately 9:30 a.m. on March 7, 2002, Employee #1 was directed by a supervisor to add hypochlorite to the hypochlorite storage container located under the pool deck. He was told that the chlorine was located in the boiler room in two 15 gallon blue carboys. He did as directed, but there was also a blue 15 gallon carboy of hydrochloric acid. He filled the hypochlorite storage container with the hydrochloric acid instead of the hypochlorite. There was a chemical reaction between the hypochlorite and hydrochloric acid which resulted in the production of poisonous chlorine gas. At least three workers were exposed to the chlorine gas as well as numerous hotel guests. Employee #1 was hospitalized for exposure to chlorine gas. Employee #2 was exposed to chlorine gas but was not hospitalized.
Keywords: chest, hydrochloric acid, vapor, reactor, inhalation, chlorine, chemical reaction, chemical vapor
Employee # Inspection Age Sex Degree Nature Occupation
1 304792666 Non Hospitalized injury Other Attendants, amusement and recreation facilities
2 304792666 Hospitalized injury Other Groundskeepers and gardeners, except farm

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