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Occupational Safety and Health Administration OSHA

Accident Report Detail

Accident: 200823193 - Employee Is Injured When Struck By Clutch-Mechanism Handle

Accident: 200823193 -- Report ID: 0521400 -- Event Date: 10/31/2005
InspectionOpen DateSICEstablishment Name
30815433511/01/20051741Jmi Corporation
At approximately 11:43 a.m. on October 31, 2005, Employee #1 was operating a clutch mechanism on a mortar-mixing machine; a required step when the consistency of the mortar mixture is not sufficiently wet. When the mixture is lacking proper consistency, the paddle mixing unit within the mixer can jam, which requires the operator to collect the jammed mortar and actuate the clutch mechanism to reverse the direction of travel of the paddle wheel. This can sometimes cause the mixer to snap back. As Employee #1 activated the mixing machine's clutch mechanism, he was struck on the side of his head by the handle of the clutch mechanism that extended from the mixing unit. Employee #1 was hospitalized and treated for a severe concussion. The accident investigation revealed that although the employer had a safety program, hazards associated with the clutch mechanism were not included. Additionally, the handle of the clutch mechanism was bent, when it should be straight as designed. Also, the company had a safety latch located below the clutch handle that was to be inserted into a slot when cycling the clutch; however, Employee #1 failed to insert the latch.
Keywords: head, clutch lever, ppe, machine operator, concrete mixer, equipment failure, struck by, concussion
End Use Proj Type Proj Cost Stories NonBldgHt Fatality
Other building New project or new addition $1,000,000 to $5,000,000 2
Employee # Inspection Age Sex Degree Nature Occupation Construction
1 308154335 Hospitalized injury Concussion Occupation not reported FallDist:
FallHt:
Cause: Exterior masonry
FatCause: Other

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