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Occupational Safety and Health Administration OSHA

Accident Report Detail

Accident: 14550677 - Employees Washed Into River By High Pressure Water

Accident: 14550677 -- Report ID: 1032500 -- Event Date: 12/05/1984
InspectionOpen DateSICEstablishment Name
152881912/06/19844911Utah Power & Light Co
A penstock at a hydroelectric plant ruptured at a welded area. The rupture resulted from a water hammer caused by a malfunctioning Johnson valve. Water, escaping at approximately 3,000 cubic feet per second, washed seven vehicles, a 70- by 40-foot building, and the parking lot into the river. Employees #1 through 4, who were in vehicles, drowned, and Employee #5 was injured when he was swept ashore. Employee #5 was hospitalized for his injuries.
Keywords: rupture, high pressure pipe, high pressure, river, valve, elec utility work, water pipe, drown, hydro-electric plant, water
Employee # Inspection Age Sex Degree Nature Occupation
1 1528819 Fatality Other Occupation not reported
2 1528819 Fatality Other Occupation not reported
3 1528819 Hospitalized injury Strain/Sprain Occupation not reported
4 1528819 Fatality Other Occupation not reported
5 1528819 Fatality Other Occupation not reported

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