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Occupational Safety and Health Administration OSHA

Accident Report Detail

Accident: 14500409 - Two Employees Injured In Tank Internal Pressure Explosion

Accident: 14500409 -- Report ID: 0523400 -- Event Date: 03/06/1990
InspectionOpen DateSICEstablishment Name
10235520303/06/19903559Imprex, Inc.
On March 6, 1990, Employee #2 was doing a leak testing of a horizontally mounted cylinder of a vacuum tank with pneumatic pressure. The vacuum tank was three feet in diameter by five feet in length. Employee #2 was straddling the tank top which was eight feet above the floor. Employee #2 was applying a soap water solution to detect leaks and then tighten the bolts on inlet and outlet flanges, as necessary. The end convex cover, held in place by the grade number five bolts (8.375 in. by 2.5 in., U.S.A. made, Global h=(h) brand), blew off traveling 41 ft and 6 in. Employee was hospitalized with a fracture.
Keywords: leak, fracture, cylinder, test equipment, bolt, concussion, tank
Employee # Inspection Age Sex Degree Nature Occupation
1 102355203 Non Hospitalized injury Concussion Welders and cutters
2 102355203 Hospitalized injury Fracture Welders and cutters

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