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Occupational Safety and Health Administration OSHA

Accident Report Detail

Accident: 568451 - Twenty Employees Overexposed To Ammonia During Release

Accident: 568451 -- Report ID: 0627100 -- Event Date: 03/29/1995
InspectionOpen DateSICEstablishment Name
10771014703/30/19952015Tyson Foods, Inc.
Sometime during the night of March 29, 1995, the #3 freezer fan lost a balancing weight that measured approximately 1 in. by 1 in. The balancing weight fell and ruptured an ammonia filled coil. The ammonia system operates under a vacuum. When the system lost its vacuum, air was pulled into the system and caused pressure to rise, making the relief valve vent ammonia into an accumulator on top of the roof that vents into the atmosphere. The vented ammonia traveled to production buildings 300 ft or more away. Employees #1 through #5 were hospitalized for ammonia overexposure, and Employees #6 through #20 were treated and released.
Keywords: ammonia, venting, toxic atmosphere, equipment failure, rupture, gas leak, toxic fumes, overexposure
Employee # Inspection Age Sex Degree Nature Occupation
1 107710147 Non Hospitalized injury Other Occupation not reported
2 107710147 Non Hospitalized injury Other Occupation not reported
3 107710147 Non Hospitalized injury Other Occupation not reported
4 107710147 Non Hospitalized injury Other Occupation not reported
5 107710147 Non Hospitalized injury Other Occupation not reported
6 107710147 Non Hospitalized injury Other Occupation not reported
7 107710147 Non Hospitalized injury Other Occupation not reported
8 107710147 Hospitalized injury Other Occupation not reported
9 107710147 Hospitalized injury Other Occupation not reported
10 107710147 Hospitalized injury Other Occupation not reported
11 107710147 Non Hospitalized injury Other Occupation not reported
12 107710147 Non Hospitalized injury Other Occupation not reported
13 107710147 Hospitalized injury Other Occupation not reported
14 107710147 Non Hospitalized injury Other Occupation not reported
15 107710147 Non Hospitalized injury Other Occupation not reported
16 107710147 Non Hospitalized injury Other Occupation not reported
17 107710147 Non Hospitalized injury Other Occupation not reported
18 107710147 Hospitalized injury Other Occupation not reported
19 107710147 Non Hospitalized injury Other Occupation not reported
20 107710147 Non Hospitalized injury Other Occupation not reported

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